Abstract:
The present invention relates in general to portable processor based devices that provide computing, communication or entertainment functionality. More particularly, the present invention pertains to portable processor based devices operable while being held in its user&#39;s hand and providing communications, organizer and/or entertainment functions, such as cellular telephones, palm-sized organizers, and MP3 players, and to portable processor based devices providing general computing capabilities, such as laptop or handheld personal computers (PC&#39;s). More specifically, the present invention relates to systems that detachably mate a plurality of portable processor based devices to provide their combined functionality in an integrated structure.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
       [0001]    This application is a continuation of U.S. patent application Ser. No. 11/539,373, filed Oct. 6, 2006, which is a continuation of U.S. patent application Ser. No. 11/305,996, filed Dec. 19, 2005, now Pat. No. 7,120,462, which is a continuation of U.S. patent application Ser. No. 09/719,290, filed Dec. 7, 2000, now abandoned. This application also claims the benefit of PCT/US00/09188, filed Apr. 7, 2000, and U.S. Provisional Application Ser. No. 60/128,138, filed Apr. 7, 1999, hereby incorporated by reference. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    1. Technical Field 
         [0003]    The present invention relates in general to portable processor based devices that provide computing, communication or entertainment functionality. More particularly, the present invention pertains to portable processor based devices operable while being held in its user&#39;s hand and providing communications, organizer and/or entertainment functions, such as cellular telephones, palm-sized organizers, and MP3 players, and to portable processor based devices providing general computing capabilities, such as laptop or handheld personal computers (PC&#39;s). More specifically, the present invention relates to systems that detachably mate a plurality of portable processor based devices to provide their combined functionality in an integrated structure. 
       BACKGROUND INFORMATION 
       [0004]    To address consumers&#39; portable computing, mobile communications, and portable entertainment needs, a variety of portable devices have been developed. The distinctly differing requirements of each application have made it too costly and unwieldy for such devices to fulfill more than one type, or two closely related types of need. 
         [0005]    For example, smart cell phones are devices that combine the capabilities of cell phones and electronic organizers. Typical of such devices are the Model PDQ-800 from Qualcomm, Incorporated of San Diego, Calif., and the Model R380 from Ericsson, Incorporated of Richardson, Tex. These products perform quite well as handheld computing and communication devices by allowing the user to access the Internet for e-mail, stock quote, etc., while preserving their use as simple wireless phone units. However, in order to allow handheld grasping, these units had to e kept small, thereby limiting their display to a size that is too small for practical use in conventional computing such as Web browsing, word processing, etc. Also, to keep the cost of such devices low, their designers employed central processors that have just enough power to carry out smart phone functions, and not enough power to handle general computing requirements. 
         [0006]    Recently Motorola, Inc. of Schaumburg, Ill., has begun to sell its clipOn Organizer as an attachment to its StarTAC cellular telephone and provide it with smart phone functionality. The clipOn Organizer and StarTAC phone have been designed to operate as individual, standalone units that each furnish its own processor and power supply. Consequently, attaching the units does not achieve the reduced size or cost desired in an integrated combination. 
         [0007]    For portable computing, the industry provides conventional laptop computers, such as those based on Pentium processors from Intel Corporation of Santa Clara, Calif., and Windows software from Microsoft Corporation of Redmond, Wash., and mini-laptop computers, such as Microsoft WindowsCE based devices, called Handheld Personal Computers (HPC&#39;s). The industry has also furnished palm-sized devices for personal information management and organization such as the Palm Pilot from 3Con Corporation of Santa Clara, Calif., and Microsoft WindowsCE-based palm-sized PC&#39;s. 
         [0008]    To fulfill the portable entertainment needs of consumers, the computer industry provides digital audio players, such as the Diamond Multimedia Rio mode made by S3, Inc. of Santa Clara, Calif., that plays MP3 compatible audio content down-loaded from the Internet. Another portable entertainment device is the wireless system controller for home entertainment systems provided by Harmon/Kardon International of Woodbury, N.Y. 
         [0009]    To fulfill both mobile computing and communications needs, a mobile worker has to carry two, and sometimes three devices—a smart phone unit, an organizer, and a laptop unit. Of course, if entertainment is also desired, the user must carry yet another device—the MP3 player. The user has to purchase and maintain multiple units—charging multiple sets of batteries and synchronizing data from one with that of the other. Consequently, there is a need for a device that provides a complete solution for mobile computing, communication and entertainment without having to own and maintain multiple units. 
       BRIEF SUMMARY OF THE INVENTION 
       [0010]    It is, therefore, an object of the present invention to provide a portable processor based device for mobile computing, communication and entertainment without having to acquire and maintain multiple units. Such device works in much the same way as conventional laptop computers. However, in the current invention, the central processor, communication circuit, speaker, microphone, and power supply are carried in a detachable portable unit. The detachable portable unit functions as a wireless phone unit. Also, by having its own display and keypad, it can serve as an Internet appliance for e-mail access and for downloading of information from the Internet, such as electronic books, audio books, digital music, etc. 
         [0011]    For applications requiring larger display and keyboard, the detachable portable unit is docked into the main unit, the docking display unit. In this mode, the detachable portable unit provides the processing and the communication power to the docking display unit. The combined unit is suitable for conventional computing, such as Web word processing and spreadsheet applications. The combined unit can also be used for reading downloaded electronic books. 
         [0012]    The detachable portable unit has additional functions. It can be used as a portable digital audio player in one of two ways. First, by plugging a headphone into its jack, the user can listen to downloaded music or audio books. Second, by docking into the docking display unit that contains larger speakers, the downloaded music or other content can be played back in much the same way as done by a standard PC or a laptop computer. The detachable portable unit can be equipped with appointment manager software, thereby functioning as a clock radio by itself or while docked with the docking display unit. 
         [0013]    The detachable portable unit can be equipped with an infrared transceiver for providing wireless optical communication with other compatible units such as those compatible with IrDA standard. With suitable software, the detachable portable unit can be made to function as a remote control unit for TV, VCR and other home entertainment systems and appliances. The user can pre-enter the desired program schedule once and thereafter have the detachable portable unit select the channels automatically. 
         [0014]    The docking display can be mounted in a vehicle, further extending the function of the mobile computing and communication device. The detachable portable unit may be fitted with a Global Positioning Satellite System (GPS) capability. In that case when the detachable unit is docked in the docking display, the combined unit serves as an auto PC, giving the vehicle driver the location of the vehicle on a map on the large display in much the same way as AutoPC reference design from Microsoft, with the exception that in the current case the detachable unit is usable in a plurality of applications. 
         [0015]    These and other objects and advantages of the present invention over existing prior art forms will become more apparent and fully understood from the following description in conjunction with the accompanying drawings. 
         [0016]    In general, a portable computing, communication and entertainment device in accordance with the present invention includes a detachable portable unit and a portable docking display unit. The detachable portable unit is sized for handheld grasping and includes a processor and a plurality of first circuits, the processor controlling the operation of the first circuits. The portable docking display unit is dimensioned to receive docking of the detachable portable unit and includes a first display and a plurality of second circuits. The processor controls the operation of at least one of the second circuits and the first display when the detachable portable unit is docked with the docking display unit. 
     
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
         [0017]      FIG. 1  is a perspective view of an exemplary device in accordance with the present invention for mobile computing, communication and entertainment. This view presents a front perspective view of a detachable portable unit and a top perspective view of a clamshell shaped docking display unit having a partially open lid and base, and illustrates diagrammatically how exemplary electrical connectors in each unit may engage and mate so that the units form a single combined device. 
           [0018]      FIG. 2  is a cross-section elevational view of the exemplary device shown in  FIG. 1  with the detachable portable unit mated with the docking display unit. 
           [0019]      FIG. 3  is an exemplary block diagram of the device shown in  FIG. 1 . 
           [0020]      FIG. 4  is a rear perspective view of the detachable portable unit. 
           [0021]      FIG. 5  is a side elevational view of the device shown in  FIG. 1  when mounted in a vehicle and in an operational configuration. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0022]    One embodiment of an exemplary device in accordance with the present invention for mobile computing, communication and entertainment is illustrated in  FIGS. 1-4  and generally indicated by the numeral  10 . Device  10  includes a detachable portable unit  20  and a docking display unit  30 . 
         [0023]    Detachable portable unit  20  may also include an electrical connector  23  that carries signals from the central processor  11  through video interface  15 , keyboard interface  16 , communication interface  17 , pen-input interface  51 , audio interface  29 , and power supply  14 . As seen in  FIG. 3 , the docking display unit  30  does not include a central processor, and one or more of the circuits of the docking display are operated by the central processor  11  of the detachable portable unit. Mating electrical connector  36  in docking display unit  30  may therefore connect these signals to auxiliary display  31 , auxiliary keyboard  32 , wired communication circuit  33 , auxiliary pen-input panel  44 , speakers  42  and microphone  43 , and power jack  35 . Communication circuit  33  is connected to communication jack  34  for further connection to communication lines such as the public switched telephone network or cell or other wireless network. 
         [0024]    Docking display unit  30  includes a recessed platform  38 , with an electrical connector  36 , a fixed tab  39  and a movable tab  41 , retractable by latch  37 . To dock detachable portable unit  20  into docking display unit  30 , fixed tab  39  is slid into slot  24  with the front side of detachable portable unit  20  facing platform  38 . The other end of detachable portable unit  20  is brought down to have connector  23  on detachable portable unit  20  mate with connector  36  of docking display unit  30 . Tab  41  is slid into slot  25  to secure detachable portable unit  20  in place. 
         [0025]    Docking display unit  30  is shown as a portable clamshell style unit, including an auxiliary display  31 , in the lid portion and an auxiliary keyboard  32  in the base portion, facing each other in the closed position. The lid of docking display unit  30  also contains a communication jack  34 , such as a standard RJ-style telephone jack, and a power jack  35 , such as an AC adapter/charger jack. 
         [0026]    The block diagram in  FIG. 3  shows detachable portable unit  20  including a central processor  11 , and the circuits supported and/or controlled by it, namely program memory  112 , at memory  13 , power supply  14 , video interface  15 , keyboard interface  16 , communication interface  17 , pen-input interface  51 , and audio interface  29 . In turn, video interface  15  drives display  18 , the keyboard interface  16  drives the keypad  19 , communication interface  17  drives wireless communication circuit  21 , pen-input interface  51  drives the pen-input panel  52 , and audio interface  29  drives microphone  26  and speaker  27 , and connects to the headphone jack  28 . Wireless communication circuit  21  is connected to the antenna  22 . GPS receiver  58 , such as that supplied by SiRF Technology of San Jose, Calif., is also connected to central processor  11 . 
         [0027]    Detachable portable unit  20  also includes an electrical connector  23  that carries signals from the central processor  11  through video interface  15 , keyboard interface  16 , communication interface  17 , pen-input interface  51 , audio interface  29 , and power supply  14 . Mating electrical connector  36  in docking display unit  30  connects these signals to auxiliary display  31 , auxiliary keyboard  32 , wired communication circuit  33 , auxiliary pen-input panel  44 , speakers  42  and microphone  43 , and power jack  35 . Wired communication circuit  33  is connected to communication jack  34  for further connection to external wired communication lines such as the public switched telephone network. 
         [0028]    Detachable portable unit  20  may also contain an optical transmitter  54  for transmission of remote control signals to TV, VCR, etc. Alternately, it may be equipped with an optical transceiver  53  for optical communication with other compatible devices, such as laptop computers, printers and network interfaces. 
         [0029]    In another variation of the above embodiment, the interface signals connecting the circuitry carried in detachable portable unit  20  and docking display unit  30  may be multiplexed using conventional multiplexing circuits in order to reduce the number of interconnect signals and hence reducing the size of connectors  23  and  36 . 
         [0030]    In another variation of the above embodiments, detachable portable unit  20  may contain no display at all, like conventional cordless handsets. In this case central processor  11  will still drive the auxiliary display  31  through the video interface  15 , and video interface  15  may be housed in docking display unit  30 , further reducing the size of detachable portable unit  20 . 
         [0031]      FIG. 5  shows docking display unit  30  mounted on the floor of a vehicle  70 . The bottom end of a pedestal  60  is attached to the vehicle floor  70 . Clamps  61  are attached to the top end of pedestal  60 . Docking display unit  30  can be removably mounted on pedestal  60  by using bolts or other conventional methods. Detachable portable unit  20  can then be docked in docking display unit  30  in the same manner as in the other applications described hereinbefore. 
         [0032]    The ordinarily skilled artisan should now appreciate that in this way a portable device for computing, communication and/or entertainment device, can be created that has a detachable portable unit. When mated with a docking display unit, the detachable portable unit becomes the controller for the entire portable computing, communication and entertainment device. The detachable portable unit is in a smaller housing that is dimensioned for handheld grasping and is sized to be carried in a pocket like an average cell phone. The docking display unit carries an auxiliary, larger display and other components. The central processor, carried in the detachable portable unit, and being used to operate the docking display unit, must have enough processing power to adequately perform functions of an entire portable computing, communication and entertainment device, and not just the functions of a wireless phone. Examples of commercially available processors adequate for this task include the Intel StrongARM processor, the models SH-3 and SH-4 processors from Hitachie American, Ltd. of Brisbane, Calif., and the model  4100  RISC processor from NEC American, Inc. of Irving, Calif. 
         [0033]    As technology advances in the future, the Pentium processor from Intel, used in most laptop computers, may be used in other embodiments of the current invention. The other components used in device  10  can be similar to those employed by traditional computing devices, communication devices and entertainment devices. Typical of these other components are: liquid crystal display of small and large sizes from Optrex America Inc. of Detroit, Mich., and Seiko Instruments USA, Incorporated of Torrance, Calif.; memory chips from Micron Technologies, Inc. of Boise, Id., VLSI Technologies wireless communication chips available from Philips North American in Atlanta, Ga., power supply chips from Analog Devices Inc. of Norwood, Mass., and pen-input panels from MicroTouch Systems, Inc. of Methuen, Mass. 
         [0034]    Device  10  as described hereinbefore will require operating system software such as Microsoft Windows or WindowsCE. Off-the-shelf application software such as Microsoft Outlook, PocketWord, etc. can be used for various tasks. Alternately, the Java software platform from Sun Microsystems, Inc. of Palo Alto, Calif., can be implemented in device  10 . In this instance, Java applets can be downloaded into device  10  from the Internet via wireless communication circuit  21  or via wired communication circuit  33 . 
         [0035]    Inasmuch as the present invention is subject to variations, modifications and changes in detail, some of which have been expressly stated herein, it is intended that all matter described throughout this entire specification or shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. It should thus be evident that a device constructed according to the concept of the present invention, and reasonably equivalent thereto, will accomplish the objects of the present invention and otherwise substantially improve the art of devices for mobile computing, communication and entertainment. 
         [0036]    In the foregoing description, certain terms have been used for brevity, clearness, and understanding. No unnecessary limitations are to be implied therefrom beyond the requirement of the prior art because such terms are used for descriptive purposes and are intended to be broadly construed. 
         [0037]    Moreover, the description and illustration of the invention are an example and the invention is not limited to the exact details shown or described.