Method and apparatus for notifying completion of data communication for mobile radio telephone
First Claim
1. In a mobile radiotelephone for data communication, comprising a tone signal generating circuit for generating a dial tone, a transmitter-receiver having a speaker connected to said tone signal generating circuit, and a control circuit for controlling the general operation of said mobile radiotelephone, connected through an I/O port to a data terminal equipment, and a changeover switch for changing the connection of a circuit for the conversational mode to a communication channel to the connection of a circuit for the data communication mode to enable data communication, a method for notifying completion of data communication for a mobile radio telephone comprising steps in which:
- (a) said control circuit maintains said circuit for the conversational mode in an off-hook state during the operation of said data terminal equipment for data communication;
(b) said control circuit monitors the status of said data terminal equipment through said I/O port during data communication, and provides a control signal to said changeover switch upon the recognition of the completion of data communication from the detection of the change of the status of said data terminal equipment to an OFF state;
(c) said changeover switch changes the connection of the communication channel to said circuit for the data communication mode for the connection of the communication channel to said circuit for the conversational mode upon the reception of said control signal from said control circuit;
(d) said control circuit feeds a restoration command signal to said tone signal generating circuit after transmitting said control signal;
(e) said tone signal generating circuit, upon the reception of said restoration command signal, feeds a tone signal of at least one audible frequency in an audible frequency band to said speaker of said transmitter-receiver while said restoration command signal is applied thereto, to notify the operator of said mobile radiotelephone of the completion of data communication; and
(f) said control circuit places said circuit for the conversational mode in the on-hook state after sending out said restoration command signal for a predetermined time period to disconnect said mobile radiotelephone from the telephone line.
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Accused Products
Abstract
A mobile radiotelephone for speech communication and data communication using signals of a voice frequency in a voice frequency band, having a tone signal generating circuit and connected to a data terminal equipment. Data communication completion is monitored, and the tone signal generating circuit is actuated to generate a tone signal by the speaker of a handset upon the completion of data communication in order to notify the operator of the completion of data communication. The speaker of the handset can be made to sound by controlling the existing tone signal generating circuit for tone dial. Thus, the mobile radiotelephone is able to notify the operator of the completion of data communication without requiring any additional tone signal generating circuit specially for such a purpose.
23 Citations
3 Claims
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1. In a mobile radiotelephone for data communication, comprising a tone signal generating circuit for generating a dial tone, a transmitter-receiver having a speaker connected to said tone signal generating circuit, and a control circuit for controlling the general operation of said mobile radiotelephone, connected through an I/O port to a data terminal equipment, and a changeover switch for changing the connection of a circuit for the conversational mode to a communication channel to the connection of a circuit for the data communication mode to enable data communication, a method for notifying completion of data communication for a mobile radio telephone comprising steps in which:
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(a) said control circuit maintains said circuit for the conversational mode in an off-hook state during the operation of said data terminal equipment for data communication; (b) said control circuit monitors the status of said data terminal equipment through said I/O port during data communication, and provides a control signal to said changeover switch upon the recognition of the completion of data communication from the detection of the change of the status of said data terminal equipment to an OFF state; (c) said changeover switch changes the connection of the communication channel to said circuit for the data communication mode for the connection of the communication channel to said circuit for the conversational mode upon the reception of said control signal from said control circuit; (d) said control circuit feeds a restoration command signal to said tone signal generating circuit after transmitting said control signal; (e) said tone signal generating circuit, upon the reception of said restoration command signal, feeds a tone signal of at least one audible frequency in an audible frequency band to said speaker of said transmitter-receiver while said restoration command signal is applied thereto, to notify the operator of said mobile radiotelephone of the completion of data communication; and (f) said control circuit places said circuit for the conversational mode in the on-hook state after sending out said restoration command signal for a predetermined time period to disconnect said mobile radiotelephone from the telephone line. - View Dependent Claims (2)
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3. In a mobile radiotelephone for data communication, an apparatus for notifying completion of data communication for mobile radio telephone comprising:
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(a) a tone signal generating circuit for tone dialing which generates a tone signal of at least one audio frequency in an audible frequency band upon the reception of a restoration command signal for a period corresponding to the duration of said restoration command signal; (b) a transmitter-receiver connected to said tone signal generating circuit, and having a speaker which is operated by said tone signal; (c) a first communication circuit for the conversational mode; (d) a second communication circuit for the data communication mode; (e) a changeover switch connected to said first communication circuit, said second communication circuit and a communication channel to connect said first communication circuit or said second communication selectively to the communication channel according to a control signal; (f) a data terminal equipment connected through an I/O port to said second communication circuit; and (g) a control circuit for controlling the general operation of said mobile radiotelephone, which monitors the status of said data terminal equipment through said I/O port, maintains said first communication circuit in an off-hook state while said data terminal equipment is in an ON state, decides that data communication has been completed, feeds said control signal to said changeover switch to connect said first communication circuit to said communication channel and feeds said restoration command signal to said tone generating circuit for a predetermined time period when the status of said data terminal equipment changes from the ON state to an OFF state, and then changes the status of said first communication circuit from the off-hook state to the on-hook state to disconnect said mobile radiotelephone from the telephone circuit.
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Specification