Patent Document

CROSS-REFERENCES TO RELATED APPLICATIONS 
       [0001]    This application does not have any related US patent applications at the time of filing. 
       TECHNICAL FIELD 
       [0002]    The presently claimed invention has applicability with consumer electronics implementations where device interoperability is desired. More specifically, the claimed invention relates to processing a concurrent IGRS-UPnP architecture for both IGRS and UPnP standards conformance. 
       BACKGROUND OF THE INVENTION 
       [0003]    Consumer electronics standards often promise far more than at times are actually delivered. Often additional device standards result in a reduction in device interoperability rather than enhanced functionality. U.S. Pat. No. 7,218,243 entitled “System and method for automatically setting up a universal remote control” is one example of a system and method that describes configuring a remote control device automatically. The disclosed system and method has an aspect in common with the other references addressed in that an additional server and database is needed to upload required interface information. As a result of the external server connection, security issues and device inefficiency can arise. 
         [0004]    U.S. Pat. No. 7,206,853 entitled “Content abstraction layer for use in home network applications” similarly defines a network architecture for a network of electronic devices including a device layer having a plurality of electronic devices interconnected using a network backbone. In the disclosed network architecture, many of the electronic devices each operate using a device native communication protocol. To control the electronic device through the defined abstraction layer, the disclosed Control Point needs to be implemented using a proprietary API. 
         [0005]    The published Chinese patent application number 200610021946.1 entitled                               details the architecture of middleware that transfers user inputted WSDL document to an IGRS service and generates source code. 
         [0006]    The published Chinese patent number 00808405.X entitled          HAVi         UPnP                    describes a gateway that connects devices on the UPnP network and HAVi network and translates two protocols, so devices can discover and control other different protocol devices through a dedicated gateway device. 
       SUMMARY OF THE INVENTION 
       [0007]    Problems with the aforementioned references include the fact that none support concurrent IGRS and UPnP protocols. Most of the references require an external gateway to translate UPnP protocol to other protocols and concentrate on designing a Control Point in order to control devices with different protocols. According to the claimed device and related method the remote control built using the claimed invention stack can control both IGRS and UPnP devices and as a result no additional setup is required. Devices using the claimed invention can be controlled by any IGRS or UPnP standard Control Point. According to the claimed invention a defined stack provides API for developers to register their callback and transfer to service that conforms both IGRS and UPnP standards. As a result, the claimed invention enables one device to support two protocols and no external device is needed. Additionally, some of the disclosed devices need additional modification to the existing device in order to implement additional standard capability. The devices disclosed in the references need to connect to an additional server and database to upload required interface that can cause security issues as well as device inefficiency. The remote control built using the stack related to the claimed invention can control both IGRS and UPnP devices and no additional setup is required. 
         [0008]    By circumventing the need for an external gateway, the claimed devices are able to use a single Control Point to support both IGRS and UPnP appliances. Devices with a concurrent UPnP/IGRS stack can be controlled by either IGRS or UPnP compliant Control Point and no modification is required for existing IGRS/UPnP devices. IGRS and UPnP both have the same goal in that both wish to deliver an industry standard to complete cross-industry device convergence. Both standards focus on the same consumer electronics products including intelligent appliances and mobile devices in home and corporate environments. Both standards have adopted similar distributed, open networking architecture. In addition, both have adopted the same TCP/IP, XML and HTTP standards. The primary intention is coexistence where device instructions and commands can be presented in the same network without interference. 
         [0009]    Owing to different message formats, security technologies and protocol headers IGRS and UPnP messages often result in message conflict and device error. Under the claimed invention, a Single Control Point is used to support both IGRS and UPnP Appliances. Devices with concurrent UPnP/IGRS stack can be controlled by either IGRS or UPnP compliant Control Point with no modification is required for existing IGRS/UPnP devices and no external gateway is required. 
         [0010]    Table 2 gives an overall comparison of IGRS and UPnP protocols 
         [0000]    
       
         
               
               
               
             
               
               
               
             
           
               
                   
                 TABLE 2 
               
               
                   
                   
               
               
                   
                 IGRS 
                 UPnP 
               
               
                   
                   
               
             
             
               
                   
               
             
          
           
               
                 Transport  
                 TCP/IP (IPv4) 
                 TCP/IP (IPv4/IPv6) 
               
               
                 and 
                 HTTP 1.1 
                 HTTP 1.0/1.1 
               
               
                 Network 
               
               
                 Protocol 
               
               
                 Discovery 
                 Adopts SSDP 
                 Adopts SSDP 
               
               
                   
                 Package Length: verbose 
                 Package length: short 
               
               
                   
                 Discovery multicast through 
                 Discovery multicast 
               
               
                   
                 address: 239.255.255.250:1900 
                 through address: 
               
               
                   
                 Response unicast through port 
                 239.255.255.250:1900 
               
               
                   
                 3880 
                 Response unicast through 
               
               
                   
                 Support Device Group Search 
                 the IP add/port the 
               
               
                   
                 Support Device/Service Search 
                 request message come 
               
               
                   
                 through Proxy 
                 from 
               
               
                 Advertise- 
                 Adopts SSDP &amp; GENA 
                 Adopts SSDP &amp; GENA 
               
               
                 ment 
                 Multicast address: 
                 Multicast address: 
               
               
                   
                 239.255.255.250:1900 
                 239.255.255.250:1900 
               
               
                   
                 Support online/offline 
                 Send out 3 + 2d + k 
               
               
                   
                 eventing 
                 advertisements each time 
               
               
                   
                 Notify service online/offline 
               
               
                   
                 status to group master device 
               
               
                 Description 
                 Retrieve description document 
                 Retrieve description 
               
               
                   
                 from secure pipe or non-secure 
                 document from service 
               
               
                   
                 URL 
                 SCPD URL 
               
               
                   
                 Device description conform to 
                 Description document 
               
               
                   
                 IGRS device description 
                 base on UPnP description 
               
               
                   
                 template 
                 document standard 
               
               
                   
                 Service description base on 
               
               
                   
                 WSDL1.1 with extension of 
               
               
                   
                 IGRS portType 
               
               
                 Service 
                 Control through service session 
                 Control through service 
               
               
                 Control 
                 Base on SOAP standard 
                 control URL 
               
               
                   
                   
                 Base on SOAP standard 
               
               
                   
                   
                 Use GENA for service 
               
               
                   
                   
                 eventing 
               
               
                 Security 
                 Incorporate in to the 
                 Defined Device Security 
               
               
                   
                 underlying message structure 
                 and Security Console 
               
               
                   
                 Support secure pipe and secure 
                 profile 
               
               
                   
                 session 
               
               
                   
               
             
          
         
       
     
         [0011]    Online Notification 
         [0000]    When a device joins the network, it advertises the availability of itself and all services that it provides. This lets control points know about all of the device functionality and all of the various ways the device can be found. The notification is multicasted through the network 
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 3 
               
             
             
               
                   
               
               
                 IGRS Online Notification Message 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Host 
                 Required 
                 Multicast 
                 Must be 239:255:255:250:1900 
               
               
                   
                   
                 address and 
               
               
                   
                   
                 host 
               
               
                 Cache-Control 
                 Required 
                 Must have 
                 Specifies the number of seconds 
               
               
                   
                   
                 max-age 
                 that the 
               
               
                   
                   
                 directive 
                 advertisement is valid. Should 
               
               
                   
                   
                   
                 be larger than 3 seconds 
               
               
                 Location 
                 Required 
                 Single URL 
                 This URL points to the location 
               
               
                   
                   
                   
                 of the IGRS 
               
               
                   
                   
                   
                 device description document if 
               
               
                   
                   
                   
                 device supports 
               
               
                   
                   
                   
                 non-secure pipe. Otherwise the 
               
               
                   
                   
                   
                 value should be 
               
               
                   
                   
                   
                 http://www.igrs.org/device 
               
               
                 NT 
                 Required 
                 Notification 
                 May take one of the following 
               
               
                   
                   
                 Type 
                 forms: 
               
               
                   
                   
                   
                 uuid:deviceURN 
               
               
                   
                   
                   
                 serviceTypeURN 
               
               
                 NTS 
                 Required 
                 Single URI 
                 Must be ssdp:alive 
               
               
                 Server 
                 Required 
                 String 
                 Concatenation of OS name, OS 
               
               
                   
                   
                   
                 version, 
               
               
                   
                   
                   
                 IGRS/1.0, product name, and 
               
               
                   
                   
                   
                 product version 
               
               
                 USN 
                 Required 
                 Single URI 
                 May take one of the following 
               
               
                   
                   
                   
                 forms: 
               
               
                   
                   
                   
                 uuid:device URN 
               
               
                   
                   
                   
                 uuid:device URN::serviceTypeURN 
               
               
                 Man 
                 Required 
                 String 
                 Must be 
               
               
                   
                   
                   
                 “http://www.igrs.org/spec1.0”;ns=01 
               
               
                 01-IGRS Version 
                 Required 
                 String 
                 Must be IGRS/1.0 
               
               
                 01- 
                 Required 
                 String 
                 Must be one of the following 
               
               
                 IGRSMessageType 
                   
                   
                 values: 
               
               
                   
                   
                   
                 DeviceOnlineAdvertisement 
               
               
                   
                   
                   
                 ServiceOnlineAdvertisement 
               
               
                 01-SourceDeviceId 
                 Required 
                 Single URI 
                 Device URN 
               
               
                 01-DeviceType 
                 Required 
                 Single URI 
                 Device Type URN 
               
               
                   
                 if it is 
               
               
                   
                 IGRS 
               
               
                   
                 device 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-DeviceName 
                 Required 
                 String 
                 Device name 
               
               
                   
                 if it is 
               
               
                   
                 IGRS 
               
               
                   
                 device 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-ServiceName 
                 Required 
                 String 
                 Service name 
               
               
                   
                 if it is 
               
               
                   
                 IGRS 
               
               
                   
                 service 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-ServiceType 
                 Required 
                 Single URI 
                 Service Type URN 
               
               
                   
                 if it is 
               
               
                   
                 IGRS 
               
               
                   
                 service 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-ServiceId 
                 Required 
                 32 bit 
                 Service Id 
               
               
                   
                 if it is 
                 unsigned 
               
               
                   
                 IGRS 
                 integer (0 
               
               
                   
                 service 
                 reserved) 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-ConfigId 
                 Required 
                 32 bit 
                 The value shall be increased by 
               
               
                   
                 if it is 
                 unsigned 
                 1 whenever 
               
               
                   
                 IGRS 
                 integer (0 
                 there is a configuration change. 
               
               
                   
                 device 
                 reserved) 
                 And the value 
               
               
                   
                 online 
                   
                 will return to 1 when upper limit 
               
               
                   
                 message 
                   
                 is reached. 
               
               
                 01-BootId 
                 Required 
                 32 bit 
                 The value shall be increased by 
               
               
                   
                 if it is 
                 unsigned 
                 1 when the 
               
               
                   
                 IGRS 
                 integer (0 
                 device is rebooted. And the 
               
               
                   
                 device 
                 reserved) 
                 value will return to 
               
               
                   
                 online 
                   
                 1 when upper limit is reached. 
               
               
                   
                 message 
               
               
                 01- 
                 Required 
                 String 
                 Device group ID list, spaced by 
               
               
                 DeviceGroupIdList 
                 if it is 
                   
                 “;”. 
               
               
                   
                 IGRS 
               
               
                   
                 device 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01- 
                 Required 
                 String 
                 Device Security ID list, spaced 
               
               
                 DeviceSecurityId List 
                 if it is 
                   
                 by “;”. 
               
               
                   
                 IGRS 
               
               
                   
                 device 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01- 
                 Required 
                 String 
                 Service Security ID list, spaced 
               
               
                 ServiceSecurityId List 
                 if it is 
                   
                 by “;”. 
               
               
                   
                 IGRS 
               
               
                   
                 service 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01- 
                 Optional 
                 String 
                 Secure listener list, format of 
               
               
                 SecureListenerList 
                   
                   
                 each listener is 
               
               
                   
                   
                   
                 “IP address:port” and spaced by 
               
               
                   
                   
                   
                 “;” in the list 
               
               
                   
                   
                   
                 string. 
               
               
                 01-ListenerList 
                 Required 
                 String 
                 Listener list, format of each 
               
               
                   
                   
                   
                 listener is “IP 
               
               
                   
                   
                   
                 address:port” and spaced by “;” 
               
               
                   
                   
                   
                 in the list 
               
               
                   
                   
                   
                 string. 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 4 
               
             
             
               
                   
               
               
                 UPnP Online Notification Message 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Host 
                 Required 
                 Multicast 
                 Must be 239.255.255.250:1900 
               
               
                   
                   
                 address and 
               
               
                   
                   
                 host 
               
               
                 Cache- 
                 Required 
                 Must have 
                 Specifies the number of seconds 
               
               
                 Control 
                   
                 max-age 
                 that the 
               
               
                   
                   
                 directive 
                 advertisement is valid. Should 
               
               
                   
                   
                   
                 be larger than 
               
               
                   
                   
                   
                 1800 seconds 
               
               
                 Location 
                 Required 
                 Single URL 
                 This URL points to the location 
               
               
                   
                   
                   
                 of the UPnP 
               
               
                   
                   
                   
                 device description document of 
               
               
                   
                   
                   
                 the root 
               
               
                   
                   
                   
                 device. 
               
               
                 NT 
                 Required 
                 Notification 
                 May take one of the following 
               
               
                   
                   
                 Type 
                 forms: 
               
               
                   
                   
                   
                 upnp:rootdevice 
               
               
                   
                   
                   
                 uuid:deviceURN 
               
               
                   
                   
                   
                 deviceTypeURN 
               
               
                   
                   
                   
                 serviceTypeURN 
               
               
                 NTS 
                 Required 
                 Single URI 
                 Must be ssdp:alive 
               
               
                 Server 
                 Required 
                 String 
                 Concatenation of OS name, OS 
               
               
                   
                   
                   
                 version, 
               
               
                   
                   
                   
                 UPnP/1.0, product name, and 
               
               
                   
                   
                   
                 product version 
               
               
                 USN 
                 Required 
                 Single URI 
                 May take one of the following 
               
               
                   
                   
                   
                 forms: 
               
               
                   
                   
                   
                 uuid:deviceURN::upnp:rootdevice 
               
               
                   
                   
                   
                 uuid:deviceURN 
               
               
                   
                   
                   
                 uuid:deviceURN::deviceTypeURN 
               
               
                   
                   
                   
                 uuid:deviceURN::serviceTypeURN 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 5 
               
             
             
               
                   
               
               
                 Concurrent IGRS-UPnP Online Notification Message 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Host 
                 Required 
                 Multicast 
                 Must be 239:255:255:250:1900 
               
               
                   
                   
                 address and 
               
               
                   
                   
                 host 
               
               
                 Cache-Control 
                 Required 
                 Must have 
                 Specifies the number of seconds 
               
               
                   
                   
                 max-age 
                 that the 
               
               
                   
                   
                 directive 
                 advertisement is valid. Should 
               
               
                   
                   
                   
                 be larger than 
               
               
                   
                   
                   
                 1800 seconds 
               
               
                 Location 
                 Required 
                 Single URL 
                 This URL points to the location 
               
               
                   
                   
                   
                 of the 
               
               
                   
                   
                   
                 Concurrent IGRS-UPnP device 
               
               
                   
                   
                   
                 description 
               
               
                   
                   
                   
                 document if device supports 
               
               
                   
                   
                   
                 non-secure pipe. 
               
               
                 NT 
                 Required 
                 Notification 
                 May take one of the following 
               
               
                   
                   
                 Type 
                 forms: 
               
               
                   
                   
                   
                 upnp:rootdevice 
               
               
                   
                   
                   
                 uuid:deviceURN 
               
               
                   
                   
                   
                 deviceTypeURN 
               
               
                   
                   
                   
                 serviceTypeURN 
               
               
                 NTS 
                 Required 
                 Single URI 
                 Must be ssdp:alive 
               
               
                 Server 
                 Required 
                 String 
                 Concatenation of OS name, OS 
               
               
                   
                   
                   
                 version, 
               
               
                   
                   
                   
                 protocol/1.0, product name, and 
               
               
                   
                   
                   
                 product 
               
               
                   
                   
                   
                 version 
               
               
                 USN 
                 Required 
                 Single URI 
                 May take one of the following 
               
               
                   
                   
                   
                 forms: 
               
               
                   
                   
                   
                 uuid:deviceURN::upnp:rootdevice 
               
               
                   
                   
                   
                 uuid:deviceURN 
               
               
                   
                   
                   
                 uuid:deviceURN::deviceTypeURN 
               
               
                   
                   
                   
                 uuid:device- 
               
               
                   
                   
                   
                 URN::serviceTypeURN 
               
               
                 Man 
                 Required 
                 String 
                 Must be 
               
               
                   
                   
                   
                 “http://www.igrs.org/spec1.0”;ns=01 
               
               
                 01-IGRSVersion 
                 Required 
                 String 
                 Must be IGRS/1.0 
               
               
                 01- 
                 Required 
                 String 
                 Must be one of the following 
               
               
                 IGRSMessageType 
                   
                   
                 values: 
               
               
                   
                   
                   
                 DeviceOnlineAdvertisement 
               
               
                   
                   
                   
                 ServiceOnlineAdvertisement 
               
               
                 01-SourceDeviceId 
                 Required 
                 Single URI 
                 Device URN 
               
               
                 01-DeviceType 
                 Required 
                 Single URI 
                 Device Type URN 
               
               
                   
                 if it is 
               
               
                   
                 IGRS 
               
               
                   
                 device 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-DeviceName 
                 Required 
                 String 
                 Device name 
               
               
                   
                 if it is 
               
               
                   
                 IGRS 
               
               
                   
                 device 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-ServiceName 
                 Required 
                 String 
                 Service name 
               
               
                   
                 if it is 
               
               
                   
                 IGRS 
               
               
                   
                 service 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-ServiceType 
                 Required 
                 Single URI 
                 Service Type URN 
               
               
                   
                 if it is 
               
               
                   
                 IGRS 
               
               
                   
                 service 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-ServiceId 
                 Required 
                 32 bit 
                 Service identifier 
               
               
                   
                 if it is 
                 unsigned 
               
               
                   
                 IGRS 
                 integer (0 
               
               
                   
                 service 
                 reserved) 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01-ConfigId 
                 Required 
                 32 bit 
                 The value shall be increased by 
               
               
                   
                 if it is 
                 unsigned 
                 1 whenever 
               
               
                   
                 IGRS 
                 integer (0 
                 there is a configuration change. 
               
               
                   
                 device 
                 reserved) 
                 And the value 
               
               
                   
                 online 
                   
                 will return to 1 when upper limit 
               
               
                   
                 message 
                   
                 is reached. 
               
               
                 01-BootId 
                 Required 
                 32 bit 
                 The value shall be increased by 
               
               
                   
                 if it is 
                 unsigned 
                 1 when the 
               
               
                   
                 IGRS 
                 integer (0 
                 device is rebooted. And the 
               
               
                   
                 device 
                 reserved) 
                 value will return to 
               
               
                   
                 online 
                   
                 1 when upper limit is reached. 
               
               
                   
                 message 
               
               
                 01- 
                 Required 
                 String 
                 Device group ID list, spaced by 
               
               
                 DeviceGroupIdList 
                 if it is 
                   
                 “;”. 
               
               
                   
                 IGRS 
               
               
                   
                 device 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01- 
                 Required 
                 String 
                 Device Security ID list, spaced 
               
               
                 DeviceSecurityIdList 
                 if it is 
                   
                 by “;”. 
               
               
                   
                 IGRS 
               
               
                   
                 device 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01- 
                 Required 
                 String 
                 Service Security ID list, spaced 
               
               
                 ServiceSecurityIdList 
                 if it is 
                   
                 by “;”. 
               
               
                   
                 IGRS 
               
               
                   
                 service 
               
               
                   
                 online 
               
               
                   
                 message 
               
               
                 01- 
                 Optional 
                 String 
                 Secure listener list, format of 
               
               
                 SecureListenerList 
                   
                   
                 each listener is 
               
               
                   
                   
                   
                 “IP address:port” and spaced by 
               
               
                   
                   
                   
                 “;” in the list 
               
               
                   
                   
                   
                 string. 
               
               
                 01-ListenerList 
                 Required 
                 String 
                 Listener list, format of each 
               
               
                   
                   
                   
                 listener is “IP 
               
               
                   
                   
                   
                 address:port” and spaced by “;” 
               
               
                   
                   
                   
                 in the list 
               
               
                   
                   
                   
                 string. 
               
               
                   
               
             
          
         
       
     
         [0012]    Offline Notification: When a device is removed from the network, it notifies control points that it is going away by sending Offline Notification message corresponding to each of the Online Notification it has previously sent out. This notifies the control points that the device and its services are no longer available. The notification is multicasted through the network. 
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 6 
               
             
             
               
                   
               
               
                 IGRS Offline Notification Message 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Host 
                 Required 
                 Multicast 
                 Must be 239.255.255.250:1900 
               
               
                   
                   
                 address and 
               
               
                   
                   
                 host 
               
               
                 NT 
                 Required 
                 Notification 
                 Same as NT header value in 
               
               
                   
                   
                 Type 
                 corresponding 
               
               
                   
                   
                   
                 online notification message. 
               
               
                 NTS 
                 Required 
                 Single URI 
                 Must be ssdp:bye-bye 
               
               
                 USN 
                 Required 
                 Single URI 
                 Same as USN header value in 
               
               
                   
                   
                   
                 corresponding 
               
               
                   
                   
                   
                 online notification message 
               
               
                 Man 
                 Required 
                 String 
                 Must be 
               
               
                   
                   
                   
                 “http://www.igrs.org/spec1.0”;ns=01 
               
               
                 01-IGRSVersion 
                 Required 
                 String 
                 Must be IGRS/1.0 
               
               
                 01-IGRSMessageType 
                 Required 
                 String 
                 Must be one of the following 
               
               
                   
                   
                   
                 values: 
               
               
                   
                   
                   
                 DeviceOfflineAdvertisement 
               
               
                   
                   
                   
                 ServiceOfflineAdvertisement 
               
               
                 01-SourceDeviceId 
                 Required 
                 Single URI 
                 Same as 01-SourceDeviceId 
               
               
                   
                   
                   
                 header value in 
               
               
                   
                   
                   
                 corresponding online 
               
               
                   
                   
                   
                 notification message 
               
               
                 01-ServiceId 
                 Required 
                 32 bit 
                 Same as 01-ServiceId header 
               
               
                   
                 if it is 
                 unsigned 
                 value in 
               
               
                   
                 IGRS 
                 integer (0 
                 corresponding online 
               
               
                   
                 service 
                 reserved) 
                 notification message 
               
               
                   
                 offline 
               
               
                   
                 message 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 7 
               
             
             
               
                   
               
               
                 UPnP Offline Notification Message 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Host 
                 Required 
                 Multicast 
                 Must be 239.255.255.250:1900 
               
               
                   
                   
                 address and 
               
               
                   
                   
                 host 
               
               
                 NT 
                 Required 
                 Notification 
                 Same as NT header value in 
               
               
                   
                   
                 Type 
                 corresponding 
               
               
                   
                   
                   
                 online notification message. 
               
               
                 NTS 
                 Required 
                 Single URI 
                 Must be ssdp:bye-bye 
               
               
                 USN 
                 Required 
                 Single URI 
                 Same as USN header value in 
               
               
                   
                   
                   
                 corresponding 
               
               
                   
                   
                   
                 online notification message 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 8 
               
             
             
               
                   
               
               
                 Concurrent IGRS-UPnP Offline Notification Message 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Host 
                 Required 
                 Multicast 
                 Must be 239.255.255.250:1900 
               
               
                   
                   
                 address and 
               
               
                   
                   
                 host 
               
               
                 NT 
                 Required 
                 Notification 
                 Same as NT header value in 
               
               
                   
                   
                 Type 
                 corresponding 
               
               
                   
                   
                   
                 online notification message. 
               
               
                 NTS 
                 Required 
                 Single URI 
                 Must be ssdp:bye-bye 
               
               
                 USN 
                 Required 
                 Single URI 
                 Same as USN header value in 
               
               
                   
                   
                   
                 corresponding 
               
               
                   
                   
                   
                 online notification message 
               
               
                 Man 
                 Required 
                 String 
                 Must be 
               
               
                   
                   
                   
                 “http://www.igrs.org/spec1.0”;ns=01 
               
               
                 01-IGRSVersion 
                 Required 
                 String 
                 Must be IGRS/1.0 
               
               
                 01-IGRSMessageType 
                 Required 
                 String 
                 Must be one of the following 
               
               
                   
                   
                   
                 values: 
               
               
                   
                   
                   
                 DeviceOfflineAdvertisement 
               
               
                   
                   
                   
                 ServiceOfflineAdvertisement 
               
               
                 01-SourceDeviceId 
                 Required 
                 Single URI 
                 Same as 01-SourceDeviceId 
               
               
                   
                   
                   
                 header value in 
               
               
                   
                   
                   
                 corresponding online 
               
               
                   
                   
                   
                 notification message 
               
               
                 01-ServiceId 
                 Required 
                 32 bit 
                 Same as 01-ServiceId header 
               
               
                   
                 if it is 
                 unsigned 
                 value in 
               
               
                   
                 IGRS 
                 integer (0 
                 corresponding online 
               
               
                   
                 service 
                 reserved) 
                 notification message 
               
               
                   
                 offline 
               
               
                   
                 message 
               
               
                   
               
             
          
         
       
     
         [0013]    Discovery occurs when Control Point sends out the discovery message to search for devices and services on the network and find ones that meet its search criteria. 
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 9 
               
             
             
               
                   
               
               
                 IGRS Discovery Request Message: 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Host 
                 Required 
                 Multicast 
                 Must be 239.255.255.250:1900 
               
               
                   
                   
                 address and 
               
               
                   
                   
                 host 
               
               
                 Man 
                 Required 
                 String 
                 Must be ssdp:discover 
               
               
                 MX 
                 Required 
                 Integer 
                 Maximum number of seconds in 
               
               
                   
                   
                   
                 which to 
               
               
                   
                   
                   
                 respond. The maximum value is 
               
               
                   
                   
                   
                 120 seconds 
               
               
                 ST 
                 Required 
                 Single URI 
                 Must be one of values: 
               
               
                   
                   
                   
                 urn:schemas-IGRS- 
               
               
                   
                   
                   
                 org:device:IGRSdevice:1 
               
               
                   
                   
                   
                 urn:schemas-IGRS- 
               
               
                   
                   
                   
                 org:service:IGRSservice:1 
               
               
                 Man 
                 Required 
                 String 
                 Must be 
               
               
                   
                   
                   
                 “http://www.igrs.org/spec1.0”;ns=01 
               
               
                 01-IGRSVersion 
                 Required 
                 String 
                 Must be IGRS/1.0 
               
               
                 01- 
                 Required 
                 String 
                 Must be one of following 
               
               
                 IGRSMessageType 
                   
                   
                 values: 
               
               
                   
                   
                   
                 SearchDeviceRequest 
               
               
                   
                   
                   
                 SearchServiceRequest 
               
               
                 01-SourceDeviceId 
                 Required 
                 Single URI 
                 Device URN 
               
               
                 01-SequenceId 
                 Required 
                 32 bit 
                 Sequence Id of search request 
               
               
                   
                   
                 unsigned 
                 message 
               
               
                   
                   
                 integer (0 
               
               
                   
                   
                 reserved) 
               
               
                 01-ClientId 
                 Required 
                 32 bit 
                 Client ID 
               
               
                   
                   
                 unsigned 
               
               
                   
                   
                 integer (0 
               
               
                   
                   
                 reserved) 
               
               
                 01-SearchAll 
                 Optional 
                 String 
                 Must be TRUE 
               
               
                 01- 
                 Optional 
                 String 
                 Device Name 
               
               
                 SearchByDeviceName 
               
               
                 01- 
                 Optional 
                 Single URI 
                 Device Type URN 
               
               
                 SearchByDeviceType 
               
               
                 01- 
                 Optional 
                 Single URI 
                 Device URN 
               
               
                 SearchByDeviceId 
               
               
                 01- 
                 Optional 
                 Single URI 
                 Device Group URN 
               
               
                 SearchByDeviceGroupId 
               
               
                 01- 
                 Optional 
                 Single URI 
                 Service Type URN 
               
               
                 SearchByServiceType 
               
               
                 01- 
                 Optional 
                 String 
                 Service Name 
               
               
                 SearchByServiceName 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 10 
               
             
             
               
                   
               
               
                 UPnP Discovery Request Message: 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Host 
                 Required 
                 Multicast 
                 Must be 239.255.255.250:1900 
               
               
                   
                   
                 address and 
               
               
                   
                   
                 host 
               
               
                 Man 
                 Required 
                 String 
                 Must be ssdp:discover 
               
               
                 MX 
                 Required 
                 Integer 
                 Maximum number of seconds in 
               
               
                   
                   
                   
                 which to 
               
               
                   
                   
                   
                 respond. 
               
               
                 ST 
                 Required 
                 Single URI 
                 May take one of the following 
               
               
                   
                   
                   
                 forms: 
               
               
                   
                   
                   
                 ssdp:all 
               
               
                   
                   
                   
                 upnp:rootdevice 
               
               
                   
                   
                   
                 uuid:deviceURN 
               
               
                   
                   
                   
                 deviceTypeURN 
               
               
                   
                   
                   
                 serviceTypeURN 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 11 
               
             
             
               
                   
               
               
                 Concurrent IGRS-UPnP Discovery Request Message: 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Host 
                 Required 
                 Multicast 
                 Must be 239.255.255.250:1900 
               
               
                   
                   
                 address and 
               
               
                   
                   
                 host 
               
               
                 Man 
                 Required 
                 String 
                 Must be ssdp:discover 
               
               
                 MX 
                 Required 
                 Integer 
                 Maximum number of seconds in 
               
               
                   
                   
                   
                 which to 
               
               
                   
                   
                   
                 respond. The maximum value is 
               
               
                   
                   
                   
                 120 seconds 
               
               
                 ST 
                 Required 
                 Single URI 
                 Value must take form: 
               
               
                   
                   
                   
                 ssdp:all 
               
               
                   
                   
                   
                 upnp:rootdevice 
               
               
                   
                   
                   
                 uuid:deviceURN 
               
               
                   
                   
                   
                 deviceTypeURN 
               
               
                   
                   
                   
                 serviceTypeURN 
               
               
                   
                   
                   
                 urn:schemas-IGRS- 
               
               
                   
                   
                   
                 org:device:IGRSdevice:1 
               
               
                   
                   
                   
                 urn:schemas-IGRS- 
               
               
                   
                   
                   
                 org:service:IGRSservice:1 
               
               
                 Man 
                 Required 
                 String 
                 Must be 
               
               
                   
                   
                   
                 “http://www.igrs.org/spec1.0”;ns=01 
               
               
                 01-IGRSVersion 
                 Required 
                 String 
                 Must be IGRS/1.0 
               
               
                 01- 
                 Required 
                 String 
                 Must be one of following 
               
               
                 IGRSMessageType 
                   
                   
                 values: 
               
               
                   
                   
                   
                 SearchDeviceRequest 
               
               
                   
                   
                   
                 SearchServiceRequest 
               
               
                 01-SourceDeviceId 
                 Required 
                 Single URI 
                 Device URN 
               
               
                 01-SequenceId 
                 Required 
                 32 bit 
                 Sequence Id of search request 
               
               
                   
                   
                 unsigned 
                 message 
               
               
                   
                   
                 integer (0 
               
               
                   
                   
                 reserved) 
               
               
                 01-ClientId 
                 Required 
                 32 bit 
                 Client ID 
               
               
                   
                   
                 unsigned 
               
               
                   
                   
                 integer (0 
               
               
                   
                   
                 reserved) 
               
               
                 01-SearchAll 
                 Optional 
                 String 
                 Must be TRUE 
               
               
                 01- 
                 Optional 
                 String 
                 Device Name 
               
               
                 SearchByDeviceName 
               
               
                 01- 
                 Optional 
                 Single URI 
                 Device Type URN 
               
               
                 SearchByDeviceType 
               
               
                 01- 
                 Optional 
                 Single URI 
                 Device URN 
               
               
                 SearchByDeviceId 
               
               
                 01- 
                 Optional 
                 Single URI 
                 Device Group URN 
               
               
                 SearchByDeviceGroupId 
               
               
                 01- 
                 Optional 
                 Single URI 
                 Service Type URN 
               
               
                 SearchByServiceType 
               
               
                 01- 
                 Optional 
                 String 
                 Service Name 
               
               
                 SearchByServiceName 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 12 
               
             
             
               
                   
               
               
                 IGRS Discovery Response Message: 
               
             
          
           
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
               
                 Cache-Control 
                 Required 
                 Must 
                 Specifies the number of seconds that the 
               
               
                   
                   
                 have 
                 advertisement is valid. Should be larger than 3 
               
               
                   
                   
                 max-age 
                 seconds 
               
               
                   
                   
                 directive 
               
               
                 Ext 
                 Required 
                 No value 
               
               
                 Location 
                 Required 
                 Single 
                 This URL points to the location of the IGRS 
               
               
                   
                   
                 URL 
                 device description document if device 
               
               
                   
                   
                   
                 supports 
               
               
                   
                   
                   
                 non-secure pipe. Otherwise the value should 
               
               
                   
                   
                   
                 be 
               
               
                   
                   
                   
                 http://www.igrs.org/device 
               
               
                 Server 
                 Required 
                 String 
                 Concatenation of OS name, OS version, 
               
               
                   
                   
                   
                 IGRS/1.0, product name, and product 
               
               
                   
                   
                   
                 version 
               
               
                 ST 
                 Required 
                 Single 
                 Same as ST header value in corresponding 
               
               
                   
                   
                 URI 
                 request message 
               
               
                 USN 
                 Required 
                 Single 
                 May take one of the following forms: 
               
               
                   
                   
                 URI 
                 uuid:deviceURN::DeviceTypeURN 
               
               
                   
                   
                   
                 uuid:deviceURN::ServiceTypeURN 
               
               
                 Man 
                 Required 
                 String 
                 Must be “http://www.igrs.org/spec1.0”;ns=01 
               
               
                 01-IGRSVersion 
                 Required 
                 String 
                 Must be IGRS/1.0 
               
               
                 01- 
                 Required 
                 String 
                 Must be one of following values: 
               
               
                 IGRSMessageType 
                   
                   
                 SearchDeviceResponse 
               
               
                   
                   
                   
                 SearchServiceResponse 
               
               
                 01-SourceDeviceId 
                 Required 
                 Single 
                 Source Device URN 
               
               
                   
                   
                 URI 
               
               
                 01-TargetDeviceId 
                 Required 
                 Single 
                 Target Device URN 
               
               
                   
                   
                 URI 
               
               
                 01- 
                 Optional 
                 String 
                 Secure listener list, format of each listener is 
               
               
                 SecureListenerList 
                   
                   
                 “IP address:port” and spaced by “;” in the list 
               
               
                   
                   
                   
                 string. 
               
               
                 01-ListenerList 
                 Required 
                 String 
                 Listener list, format of each listener is “IP 
               
               
                   
                   
                   
                 address:port” and spaced by “;” in the list 
               
               
                   
                   
                   
                 string. 
               
               
                 01- 
                 Required 
                 String 
                 Device security id list, spaced by “;” in the 
               
               
                 DeviceSecurityIdList 
                   
                   
                 list 
               
               
                   
                   
                   
                 string 
               
               
                   
               
             
          
         
       
     
         [0000]    
       
         
               
               
               
               
             
               
             
               
               
               
               
             
               
             
               
               
               
               
             
           
               
                 TABLE 13 
               
               
                   
               
               
                 Header 
                 Required 
                 Type 
                 Description 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 UPnP Discovery Response Message: 
               
             
          
           
               
                 Cache-Control 
                 Required 
                 Must have 
                 Specifies the number of seconds that the 
               
               
                   
                   
                 max-age 
                 advertisement is valid. Should be larger than 
               
               
                   
                   
                 directive 
                 1800 seconds 
               
               
                 Date 
                 Required 
                 RFC 1123 
                 When the response was generated 
               
               
                   
                   
                 date 
               
               
                 Ext 
                 Required 
                 No value 
               
               
                 Location 
                 Required 
                 Single 
                 This URL points to the location of the UPnP 
               
               
                   
                   
                 URL 
                 device description document of the root 
               
               
                   
                   
                   
                 device. 
               
               
                 Server 
                 Required 
                 String 
                 Concatenation of OS name, OS version, 
               
               
                   
                   
                   
                 UPnP/1.0, product name, and product version 
               
               
                 ST 
                 Required 
                 Single 
                 Same as ST header value in corresponding 
               
               
                   
                   
                 URI 
                 request message 
               
               
                 USN 
                 Required 
                 Single 
                 May take one of the following forms: 
               
               
                   
                   
                 URI 
                 uuid:deviceURN:upnp-rootdevice 
               
               
                   
                   
                   
                 uuid:deviceURN 
               
               
                   
                   
                   
                 uuid:deviceURN::deviceTypeURN 
               
               
                   
                   
                   
                 uuid:deviceURN::serviceTypeURN 
               
             
          
           
               
                 Concurrent IGRS-UPnP Discovery Response Message: 
               
             
          
           
               
                 Cache-Control 
                 Required 
                 Must 
                 Specifies the number of seconds that the 
               
               
                   
                   
                 have 
                 advertisement is valid. Should be larger than 
               
               
                   
                   
                 max-age 
                 1800 seconds 
               
               
                   
                   
                 directive 
               
               
                 Ext 
                 Required 
                 No value 
               
               
                 Location 
                 Required 
                 Single 
                 This URL points to the location of the 
               
               
                   
                   
                 URL 
                 Concurrent IGRS-UPnP device description 
               
               
                   
                   
                   
                 document if device supports non-secure pipe. 
               
               
                 Server 
                 Required 
                 String 
                 Concatenation of OS name, OS version, 
               
               
                   
                   
                   
                 protocol/1.0, product name, and product 
               
               
                   
                   
                   
                 version 
               
               
                 ST 
                 Required 
                 Single 
                 Same as ST header value in corresponding 
               
               
                   
                   
                 URI 
                 request message 
               
               
                 USN 
                 Required 
                 Single 
                 May take one of the following forms: 
               
               
                   
                   
                 URI 
                 uuid:deviceURN:upnp-rootdevice 
               
               
                   
                   
                   
                 uuid:deviceURN 
               
               
                   
                   
                   
                 uuid:deviceURN::deviceTypeURN 
               
               
                   
                   
                   
                 uuid:deviceURN::serviceTypeURN 
               
               
                 Man 
                 Required 
                 String 
                 Must be “http://www.igrs.org/spec1.0”;ns=01 
               
               
                 01-IGRSVersion 
                 Required 
                 String 
                 Must be IGRS/1.0 
               
               
                 01- 
                 Required 
                 String 
                 Must be one of following values: 
               
               
                 IGRSMessageType 
                   
                   
                 SearchDeviceResponse 
               
               
                   
                   
                   
                 SearchServiceResponse 
               
               
                 01-SourceDeviceId 
                 Required 
                 Single 
                 Source Device URN 
               
               
                   
                   
                 URI 
               
               
                 01-TargetDeviceId 
                 Required 
                 Single 
                 Target Device URN 
               
               
                   
                   
                 URI 
               
               
                 01- 
                 Optional 
                 String 
                 Secure listener list, format of each listener is 
               
               
                 SecureListenerList 
                   
                   
                 “IP address:port” and spaced by “;” in the list 
               
               
                   
                   
                   
                 string. 
               
               
                 01-ListenerList 
                 Required 
                 String 
                 Listener list, format of each listener is “IP 
               
               
                   
                   
                   
                 address:port” and spaced by “;” in the list 
               
               
                   
                   
                   
                 string. 
               
               
                 01- 
                 Required 
                 String 
                 Device security id list, spaced by “;” in the list 
               
               
                 DeviceSecurityIdList 
                   
                   
                 string 
               
               
                   
               
             
          
         
       
     
         [0014]    By implementing the disclosed concurrent UPnP-IGRS stack, network traffic is reduced as a result of message merging and reduced memory usage is attained through module reuse. As a direct and intended consequence, support is not needed from the respective standards bodies since the stack is completely standard compliant. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0015]      FIG. 1  depicts a block diagram of the primary embodiment of the claimed invention. 
           [0016]      FIG. 2  depicts a block diagram of the architecture of the primary embodiment of the claimed invention as applied to IGRS, UPnP and Concurrent IGRS-UPnP Devices. 
           [0017]      FIG. 3  depicts a schematic diagram of electronic devices in operation according to the claimed invention. 
           [0018]      FIG. 4  depicts a flow diagram of concurrent IGRS-UPnP device operation according to the claimed invention. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0019]      FIG. 1  depicts a block diagram of the primary embodiment of the claimed invention. According to  FIG. 1 , device  101 ,  103 ,  105  interaction is governed by four phases of operation starting with discovery (Online)  121 , description  131 , control  141  and discovery (Offline)  151 . With the IGRS and Concurrent IGRS-UPnP Device, discovery (Online)  121  begins with Alive Notification  123  in which the device notifies other devices on the network that the device is active. After Alive Notification, the description phase  131  is entered where pipe setup  133  is followed by IGRS Device Description  135  and IGRS Service Description  137 . After the description phase  131  is complete, control phase  141  begins with session setup  143 , action control  145 , session termination  147  and pipe disconnection  19 . Discovery (offline)  151  concludes with offline notification  153 . According to one embodiment of the claimed invention, the Concurrent IGRS-UPnP Devices is a control point and controls the actions of IGRS devices in the network through action control  145 . 
         [0020]      FIG. 1  additionally depicts a block diagram of the primary embodiment of the claimed invention as applied to UPnP and Concurrent IGRS-UPnP Devices. With UPnP capable devices, device  101 ,  103 ,  105  interaction is similarly governed by four phases of operation starting with discovery (Online)  121 , description  131 , control  141  and discovery (Offline)  151 . With the UPnP and Concurrent IGRS-UPnP Devices, discovery (Online)  121  begins with Alive Notification  122  in which the device notifies other devices on the network that the device is active. After Alive Notification, the description phase  131  is entered where UPnP device description  134  is followed by UPnP Service Description  136 . After the description phase  131  is complete, control phase  141  begins with action control  144 . Discovery (offline)  151  concludes with offline notification  154 . According to one embodiment of the claimed invention, the Concurrent IGRS-UPnP Devices is a control point and controls the actions of UPnP devices in the network through action control  144 . According to another embodiment of the claimed invention, the Concurrent IGRS-UPnP Devices acts as a control point and controls the actions of IGRS devices and UPnP devices in the network through action control  145  and action control  144  respectively. 
         [0021]      FIG. 2  depicts a block diagram of the architecture of the primary embodiment of the claimed invention as applied to IGRS, UPnP and Concurrent IGRS-UPnP Devices.  FIG. 2  architecture summary  201  details port layer  210  with first port  211  connected to mini-server  214  and second port  221  connected to multicast listener  224 . Application (or API) layer  220  including mini-server  214  and multicast listener  224  also includes HTTP sender  228 . Under application layer  220  is the profile handler session layer  230  where UPnP Profile Handler  231  and IGRS Profile Handler  233  support mini-server  214 , multicast listener  224  and HTTP sender  228 . Below profile handler session layer  230  is device handler session layer  240 . Device handler session layer  240  includes Advertisement Handler  242 , Event Handler  244 , Description Handler  246 , Discovery Handler  247  and IGRS Pipe/Session Manager  248 . Transport layer  250  includes Core Library  252  which handles protocols such as HTTP, XML, SSDP, GENA, SOAP, WSDL and Security. Architecture summary  201  also depicts Abstract Layer  260  and Hardware Platform layer  270 . 
         [0022]      FIG. 3  depicts a schematic diagram of electronic devices in operation according to the claimed invention. Device community  301  includes wireless IGRS display  303 , wireless UPnP audio content device  307 , UPnP display  309 , wired and wireless gateway  312  connected to concurrent IGRS-UPnP media player  315 , control point  318  and PC  321  with IGRS and UPnP software installed to allow for joint IGRS and UPnP control capabilities. 
         [0023]      FIG. 4  depicts a flow diagram  400  of concurrent IGRS-UPnP device operation according to the claimed invention. In online step  401 , according to one embodiment of the claimed invention, the concurrent IGRS-UPnP device discovers other online devices in a network having IGRS devices and UPnP devices; according to another embodiment of the claimed invention, the concurrent IGRS-UPnP device notifies some or all of the online devices in the network that the concurrent IGRS-UPnP device is going online. 
         [0024]    According to one embodiment of the claimed invention, the online step  401  includes composing interoperable messages that contains a portion of content compatible only with the IGRS protocol, a portion of content compatible only with the UPnP protocol, and a portion of content compatible with both the IGRS and the UPnP protocols such that the whole message is interoperable among the network of IGRS device and UPnP device. The concurrent IGRS-UPnP device may then either broadcast or transmit such message to other devices in the network. 
         [0025]    According to an embodiment of the claimed invention, the concurrent IGRS-UPnP device takes initiative to broadcast interoperable messages for discovering other devices in the network. According to another embodiment of the claimed invention, the concurrent IGRS-UPnP device composes and broadcasts interoperable messages for notifying other devices in the network about going online. 
         [0026]    In describing step  402 , the concurrent IGRS-UPnP device describes those online devices that were found in discovering step  401 . In controlling step  403 , the concurrent IGRS-UPnP device controls some or all of the online devices. According to an embodiment of the claimed invention, the concurrent IGRS-UPnP device composes and transmits the interoperable messages as described above in a one-to-one manner in the controlling step  403 . 
         [0027]    In notifying step  404 , the concurrent IGRS-UPnP device notify some or all of the online devices in the network that the concurrent IGRS-UPnP device is going offline. According to an embodiment of the claimed invention, the concurrent IGRS-UPnP device composes and broadcasts the interoperable messages as described above in the notifying step  404 . 
         [0028]    The above disclosure is related to the detailed technical contents and inventive features thereof. People skilled in this field may proceed with a variety of modifications and replacements based on the disclosures and suggestions of the invention as described without departing from the characteristics thereof. Nevertheless, although such modifications and replacements are not fully disclosed in the above descriptions, they have substantially been covered in the following claims as appended.

Technology Category: 5