Facsimile communication method and apparatus for transmitting a predetermined portion of message data as a training check signal
AssigneeKabushiki Kaisha Toshiba
InventorSeizo Ueno
Life of this patent
Estimating the term…
Abstract
A facsimile communication method wherein a facsimile transmitter transmits a portion of the message data to a facsimile receiver as the training check signal. A modem in the receiver trains automatically by its equalization function. The training is verified by ensuring that a predetermined number of bits per line have been transmitted and received. In case of success in training, the rest of message data is then transmitted.
Claims22
In a facsimile communication system having a transmitter and a receiver, a method for verification of training comprising the steps of:
- forming, at said transmitter, a training check signal from a predetermined portion of message data to be transmitted;
- transmitting the training check signal to said receiver;
- verifying, at said receiver, successful training by receiving the training check signal and determining whether it is substantially the same as that transmitted;
- transmitting, to said transmitter, a confirmation signal representing that the transmission of the rest of the message data may commence if the training is successful;
- and
- transmitting, to said receiver, the rest of the message data upon reception of the configuration signal.
A facsimile transceiver comprising:
- transceiver means for transmitting and receiving message data and procedural data;
- and
- controlling means coupled to said transceiver means for controlling said transceiver means to transmit a predetermined portion of the message data to a facsimile receiver as a training check signal, said transceiver means being adapted to verify training when said transceiver means receives a training check signal from a facsimile transmitter, said transceiver means being further adapted to transmit procedural data representing success in training to a facsimile transmitter when training has succeeded, said transceiver means being further adapted to transmit the rest of said message data when said transceiver means receives procedural data representing success in training from said facsimile receiver.
An improved facsimile communication system having first transceiver means provided in a facsimile transmitter for transmitting message data and receiving procedural data and having second transceiver means provided in a facsimile receiver for receiving message data and transmitting procedural data, wherein the improvement comprises:
- first control means coupled to said first transceiver means for controlling said first transceiver means to transmit a predetermined portion of said message data as a training check signal;
- and
- said control means coupled to said second transceiver means for verifying training in said second transceiver means and controlling said second transceiver means to transmit procedural data representing success in training when training is successful wherein said first control means controls said first transceiver means to transmit the rest of said message data after said first transceiver means receives said procedural data representing success in training.
Dependencies are inferred from the claim text.