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US 4,910,506 AGranted
Data communication apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTakehiro Yoshida, Yasuhiro Murayama
Life of this patent
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Abstract
A data communication apparatus comprises means for registering a destination station identification code number, means for storing information, and control means for setting a communication mode by the destination station identification code registration means and the information storing means.
Claims11
A data communication apparatus comprising:
- means for generating any of a plurality of selection signals for respectively indicating different stations to be called;
- first memory means for storing a plurality of calling signal data for the stations to be called;
- second memory means for storing indications as to whether apparatus at each station to be called is a first type or a second type, said first type including speech communication apparatus;
- communication means for communicating with the apparatus in a called station, said communication means having a first communication mode for communicating with apparatus of the first type and a second communication mode for communicating with apparatus of the second type;
- calling means;
- and
- control means operative in response to one of said generated selection signals (a) to read the respective calling signal data from the first memory means, (b) to cause the calling means to transmit the calling signal data on a communication line, (c) to read the respective apparatus type from the second memory means, and (d) to select the respective communication mode of the communication means in response to the read-out respective apparatus type.
4 more elements
A data communication apparatus comprising:
- means for generating any of a plurality of selection signals for respectively indicating different stations to be called;
- first memory means for storing a plurality of calling signal data for the stations to be called;
- second memory means for storing indications as to whether apparatus at each station to be called is a first type or a second type, said first type and said second type being different in communication data type from each other;
- communication means for communicating with the apparatus in a called station, said communication means having a first communication mode for communicating with apparatus of the first type and a second communication mode for communicating with apparatus of the second type;
- calling means;
- and
- control means operable in response to one of said generated selection signals (a) to read the respective calling signal data from the first memory means, (b) to cause the calling means to transmit the calling signal data on a communication line, (c) to read the respective apparatus type from the second memory means and (d) to select a respective communication mode of the communication means in response to the read-out respective apparatus type.
4 more elements
A data communication apparatus comprising:
- first modem means for modulating and demodulating an image signal and for outputting a specific signal in response to receiving a control signal from a destination station during communication through said first modem means;
- second modem means for modulating and demodulating the control signal for a communication protocol;
- and
- control means for selecting said first modem means or said second modem means and for receiving and/or sending signals through the selected modem means;
- wherein when said first modem modes receives a control signal from a destination station during communication through said first modem means, said control means detects reception of the control signal on the basis of said specific signal from said first modem means, and selects said second modem means, and
- wherein said second modem means demodulates the control signal received by said first modem means and said control means identifies the demodulated control signal.
3 more elements
A data communication apparatus comprising:
- means for effecting procedures for a data communication protocol to set a mode for communication with a called station;
- means for conducting data communication in the mode set by said procedure effecting means;
- means for storing information relating to a function of a called station, said information being sent from the called station in effecting procedures for a data communication protocol;
- means for instructing a change of the mode for communication with a called station;
- and
- means for changing the mode for communication with a called station on the basis of the information relating to a function of a called station stored in said storing means when said instruction means instructs a change of the mode during data communication through said data communication means, said mode changing means indicating a change of the mode to the called station through said procedure effecting means, and
- wherein when said data communication conducting means completes transmission of data on one page, said mode changing means discriminates whether the change of the mode instructed by said instructing means is allowable or not on the basis of the information relating to a function of a called station stored in said storage means, and if said mode changing means discriminates that the change of the mode is allowable, said mode changing means changes the mode for communication with a called station, whereby simplifying procedures for a data communication protocol in changing the mode is effected.
4 more elements
A data communication apparatus comprising:
- means for effecting procedures for a data communication protocol to set a mode for communication with a called station;
- means for conducting data communication in the mode set by said procedure effecting means;
- means for storing information relating to a function of a called station, said information being sent from the called station in effecting procedures for a data communication protocol;
- means for instructing a change of the mode for communication with a called station;
- and
- means for changing the mode for communication with a called station on the basis of the information relating to a function of a called station stored in said storing means when said instruction means instructs a change of the mode during data communication through said data communication means, said mode changing means indicating a change of the mode to the called station through said procedure effecting means, and
- wherein said data communication means carries out communication of the image data and said mode changing means changes the density of the image data, whereby simplifying procedures for a data communication protocol in changing the mode is effected.
4 more elements
Dependencies are inferred from the claim text.