Abstract:
An extension device adapted for speedy connection of various types of hand free devices for cellular phones to service centers is mainly made up of a control unit, a power supply processing unit, a press button unit, a data storage unit and a dialing unit. Alternatively, an infrared receiving unit in cooperation with an infrared transmitter can be added thereto. Thereby such an extension device enables all types of hand-free devices for cellular phones to be quickly connected to service centers in request for required services.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    The present invention relates to an extension device adapted for speedy connection of various types of hand free devices of cellular phones to service centers. It mainly comprises a control unit, a power supply processing unit, a press button unit, a data storage unit and a dialing unit. Alternatively, an infrared receiving unit in cooperation with an infrared transmitter can be added thereto. Thereby such an extension device enables all types of hand-free devices for cellular phones to be quickly connected to service centers in request for required services.  
           [0002]    In a knowledge explosion time, people are eager to acquire information not only from newspaper, magazines and other media but also from all sources available to them. Timely, personal and portable devices are needed to meet such a requirement. The answer is cellular phones in connection to all kinds of fee charging service centers to acquire instant information, such as road conditions, weathers, consumer&#39;s information, on-line service, driving navigation, SOS calls and etc.. However, the speedy connection to such service centers is a major concern to most users. Direct dialing of cellular phones is impossible for speedy connection in driving, and it is also dangerous and forbidden by laws in many countries. In emergent situations, only a few seconds are available to send off SOS signals or make a dial. How can a user do it? Common cellular phones can not meet such a need. Even hand free devices produced in many types are not all able to perform such a speedy connection. So, it is the main purpose of this invention to enable all types of hand free devices to make speedy connection to service centers, rendering instant connection to service centers possible.  
         SUMMARY OF THE INVENTION  
         [0003]    Therefore, the primary object of the present invention is to provide an extension device for speedy connection of various kinds of hand-free devices of cellular phones to service centers. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0004]    [0004]FIG. 1 is a diagram showing the operational connection of the present invention;  
         [0005]    [0005]FIG. 2 is a block diagram showing the systematic structure of the present invention;  
         [0006]    [0006]FIG. 3 is an operation flow chart of the present invention;  
         [0007]    [0007]FIG. 4 is a block diagram of the systematic structure of the second embodiment of the present invention;  
         [0008]    [0008]FIG. 5 is an operation flow chart of the second embodiment thereof;  
         [0009]    [0009]FIG. 6 is a block diagram of the systematic structure of the third embodiment of the present invention;  
         [0010]    [0010]FIG. 7 is an operation flow chart of the third embodiment thereof. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0011]    Referring to FIGS. 1, 2, the present invention is illustrated in details of its first practical embodiment and systematic block diagrams thereof. It mainly has an extension device A in connection to a cellular phone T at one end and to a hand free device H at the other end.  
         [0012]    The extension device A is further comprised of:  
         [0013]    a control unit A 1  is mainly used to control the operations of individual units of the extension device A and is internally equipped with a control program;  
         [0014]    a power supply processing unit A 2  coupled to a power circuit of the hand free device H is used to supply electrical power to the extension device A;  
         [0015]    a press button unit A 3  includes a press button circuit A 31  and at least a service button A 32  or a set of press buttons that are respectively marked with a functional indication of service provided by the buttons; each one of the buttons corresponds to a phone number stored in the data storage unit;  
         [0016]    a data storage unit A 4  is a temporary memory unit for storage of phone numbers to be dialed;  
         [0017]    a dialing unit A 5  can be a DTMF or other dialing circuits for receiving and coding the phone numbers transmitted from the control unit A 1  and delivering further to the cellular phone T for effecting automatic dialing purpose;  
         [0018]    By way of the assembly of the above components, when a user intends to promote the function of the hand free device H and the cellular phone T in such a manner that dialing of the cellular phone T can be effected by actuation of the service buttons A 32 , the hand free device H of the cellular phone is coupled to one end of the extension device A and the other end of the extension device A is connected to the output/input terminal T 1  of the cellular phone. Thereby, the functional extension of the hand free device as well as the cellular phone is accomplished.  
         [0019]    As shown in FIG. 3 is the flow chart of the operation of the present invention.  
         [0020]    1. After the extension device A is in connection to the cellular phone T, the hand free device, the extension device A is set in a standby mode.  
         [0021]    2. The press button circuit A 31  of the press button unit A 3  of the extension device A checks if a user presses the service button A 32 .  
         [0022]    3. After the service button A 32  is pressed by a user, the control unit A 1  picks out one of preset phone numbers from the data storage unit A 4 . The numbers can be preset in production line or is set in advance by a user.  
         [0023]    4. Check if the phone number has been read out, if not, step 3 is repeated; if completed, the control unit A 1  will transmit the phone number to the dialing unit A 5  and a dialing signal is sent via an output wire to the output/input terminal T 1  of the cellular phone, rendering the cellular phone T in a to-be-dialed status in which a phone number is ready to be input.  
         [0024]    5. The dialing unit A 5  will control to deliver the phone number transmitted from the control unit A 1  to the output/input terminal T 1  of the cellular phone T via a wire so as to permit the cellular phone to complete the input of the phone number and transmission of the same.  
         [0025]    6. Step 2 is repeated.  
         [0026]    In such a manner, the extension device of the present invention applied to various types of hand free devices and cellular phones can effectively extend the dialing operation via a service button, making speedy connection to service centers or to specific phone numbers becomes possible.  
         [0027]    Moreover, as shown in FIGS. 4, 5, the second embodiment of the present invention is illustrated by way of its systematic block diagram and flow chart. Although the present invention can employ a service button to complete the activation of the connection to service centers, the setting of the service button unavoidably spoils the panel of a vehicle. In addition, no suitable location is available for the setting. Therefore, an infrared transmitter B 33  in combination with an infrared receiving unit B 3  added to the extension device B can be used in place of the operation of the service button in the first embodiment. The extension device B comprises:  
         [0028]    a control unit B 1  is mainly used to control the operations of individual units of the extension device B and is internally equipped with a control program;  
         [0029]    a power supply processing unit B 2  coupled to a power circuit of the hand free device H is used to supply electrical power to the extension device B;  
         [0030]    an infrared receiving unit B 3  including an infrared receiving circuit B 31  and an infrared receiver B 32 ; the infrared receiving circuit B 31  is used to control the associated components of this unit and process the infrared signals received by the infrared receiver B 32  and transmitted to the control unit B 1  after decoding;  
         [0031]    an infrared transmitter B 33  is portable in size with a matrix of press buttons, an infrared coding unit and an infrared transmitting unit disposed thereon;  
         [0032]    a data storage unit B 4  is a temporary memory unit for storage of phone numbers to be dialed;  
         [0033]    a dialing unit B 5  can be a DTMF or other dialing circuits for coding the phone numbers transmitted from the control unit B 1  and transmitting the same to the cellular phone T for automatic dialing purpose;  
         [0034]    By way of the assembly of the above components, a user only has to connect the extension device of the present invention to the hand free device H and the cellular phone T and takes the following steps to connect to a service center or a specific phone in speedy dialing operation.  
         [0035]    1. After the extension device B is in connection to the cellular phone T, the hand free device H, the extension device B is set in a standby mode.  
         [0036]    2.The infrared receiving unit B 3  of the extension device B checks if a user presses the service button B 32  of the infrared transmitter B 33 .  
         [0037]    3.After the service button B 32  of the infrared transmitter B 33  is pressed by a user, the control unit B 1  picks out one of preset phone numbers from the data storage unit B 4 . The numbers can be preset in production or is set in advance by a user.  
         [0038]    4.Check if the phone number has been read out, if not, step 3 is repeated; if completed, the control unit B 1  will transmit the phone number to the dialing unit B 5  and a dialing signal is sent via an output wire to the output/input terminal T 1  of the cellular phone, rendering the cellular phone T in a to-be-dialed status in which a phone number is to be input.  
         [0039]    5.The dialing unit B 5  will control to deliver the phone number transmitted from the control unit B 1  to the output/input terminal T 1  of the cellular phone T via a wire so as to permit the cellular phone to complete the input of the phone number and transmission of the same.  
         [0040]    6. Step 2 is repeated.  
         [0041]    At last, referring to FIGS. 6, 7, the third embodiment of the present invention is illustrated of its systematic block diagram and its operation flow chart. In this embodiment, a remote control method is not the only choice in operation, so, even a remote controller is lost or can not be located for the time being, the extension device is still available without influence. In this instance, the press button unit of the first embodiment is combined with the infrared receiving unit of the second embodiment so that pressing the service button or remote controlling by the infrared transmitter are applicable to effect the dialing operation to connect to service centers.  
         [0042]    The third embodiment is equipped with an extension device C having one end coupled to the cellular phone T and another end connected to the hand free device H; wherein the extension device C includes:  
         [0043]    a control unit C 1  is mainly used to control the operations of individual units of the extension device C and is internally equipped with a control program;  
         [0044]    a power supply processing unit C 2  coupled to the power circuit of the hand free device H is used to supply electrical power to the extension device C;  
         [0045]    a press button unit C 3  includes a press button circuit C 31  and at least a service button C 32 ;  
         [0046]    a data storage unit C 4  is a temporary memory unit for storage of the phone numbers to be dialed;  
         [0047]    a dialing unit C 5  can be a DTMF or other dialing circuits for receiving and coding the phone numbers transmitted from the control unit C 1  and delivering further to the cellular phone T for effecting automatic dialing purpose;  
         [0048]    an infrared receiving unit C 6  including an infrared receiving circuit C 61  and an infrared receiver C 62 ; the infrared receiving circuit C 61  is used to control the associated components of this unit and process the infrared signals received by the infrared receiver C 62  and transmitted to the control unit C 1  after decoding;  
         [0049]    an infrared transmitter C 63  is portable in size with a matrix of pressing buttons, an infrared coding unit and an infrared transmitting unit disposed thereon.  
         [0050]    By way of the above components in assembly, a user only has to connect the extension device C to the hand-free device H and the cellular phone T, and follows the following procedures, operating either on the service button C 32  or the infrared transmitter C 63  for remote control, whereby speedy dialing for connection to a service center or a specific phone can be effected.  
         [0051]    1. After the extension device C is in connection to the cellular phone T, the hand free device H, the extension device C is set in a standby mode.  
         [0052]    2.The press button unit C 3  and the infrared receiving unit C 6  of the extension device C checks if a user presses the service button.  
         [0053]    3.After the service button is pressed by a user, the control unit C 1  picks out one of preset phone numbers from the data storage unit C 4 . The numbers can be preset in production or is set in advance by a user.  
         [0054]    4.Check if the phone number has been read out, if not, step 3 is repeated; if completed, the control unit C 1  will transmit the phone number to the dialing unit C 5  and a dialing signal is sent via an output wire to the output/input terminal T 1  of the cellular phone, rendering the cellular phone T in a to-be-dialed status in which a phone number is ready to be input.  
         [0055]    5.The dialing unit C 5  will control to deliver the phone number transmitted from the control unit C 1  to the output/input terminal T 1  of the cellular phone T via a wire so as to permit the cellular phone to complete the input of the phone number and transmission of the same.  
         [0056]    6. Step 2 is repeated.  
         [0057]    It will of course be understood by those skilled in the art that the particular embodiments of the invention here presented are by way of illustration only, and are meant to be in no way restrictive; therefore, numerous changes and modifications may be made, and the full use of equivalents resorted to, without departing from the spirit or scope of the invention as outlined in the appended claims.