Communication apparatus having optional procedure signal functionality
AssigneeCanon Kabushiki Kaisha
InventorTakehiro Yoshida
Life of this patent
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Abstract
A facsimile apparatus which can make definite the presence or absence of optional signals such as a password signal (PWD), a sub-address signal (SUB), a selective polling signal (SEP) and the like in communication between transmitting and receiving stations, thereby preventing an erroneous operation. A digital transmit command signal (DTC) is used to notify a remote station whether a transmit command signal includes the password signal (PWD) and selective polling signal (SEP). A digital command signal (DCS) is used to notify a remote station whether a receive command signal includes the password signal (PWD) and sub-address signal (SUB).
Claims65
A communication apparatus having a first procedure function for communicating a plurality of standard procedure signals and a second procedure function for communicating a plurality of optional procedure signals, said apparatus comprising:
- reception means for receiving, from a destination, a first standard procedure signal indicating that the destination has the second procedure function;
- and
- transmission means responsive to the first standard procedure signal for transmitting, to the destination, a second standard procedure signal including information indicating communication of the optional procedure signals, and a first optional procedure signal for the second procedure function.
A communication apparatus having a first procedure function for communicating a plurality of standard procedure signals and a second procedure function for communicating a plurality of optional procedure signals, said apparatus comprising:
- transmission means for transmitting, to a destination, a first standard procedure signal indicating that said apparatus has the second procedure function;
- reception means for receiving either a second standard procedure signal or a first optional procedure signal and the second standard procedure signal, as a response signal corresponding to the first standard procedure signal from the destination;
- and
- determining means for discriminating whether or not information indicating communication the optional procedure signals has been set in the received second standard procedure signal, and for determining, in a case where the first optional procedure signal has not been received from the destination, a reception error of the first optional procedure signal in accordance with a discrimination of the information in the second standard procedure signal.
A communication method for a communication apparatus having a first procedure function for communicating a plurality of standard procedure signals and a second procedure function for communicating a plurality of optional procedure signals, said method comprising the steps of:
- receiving, from a destination, a first standard procedure signal indicating that the destination has the second procedure function;
- and
- transmitting, responsive to the first standard procedure signal, a second standard procedure signal including information indicating communication of the optional procedure signals and a first optional procedure signal for the second procedure function to the destination.
A communication method for a communication apparatus having a first procedure function for communicating a plurality of standard procedure signals and a second procedure function for communicating a plurality of optional procedure signals, said method comprising the steps of:
- transmitting, to a destination, a first standard procedure signal indicating that said apparatus has the second procedure function;
- receiving either a second standard procedure signal or a first optional procedure signal and the second standard procedure signal, as a response signal corresponding to the first standard procedure signal from the destination;
- discriminating whether or not information indicating communication of the optional procedure signals has been set in the received second standard procedure signal;
- and
- determining, in a case where the first optional procedure signal has not been received from the destination, a reception error of the first optional procedure signal in accordance with the discrimination of the information in the second standard procedure signal.
A communication method between a first communication apparatus and a second communication apparatus, said first and second communication apparatuses having a first procedure function for communicating a plurality of standard procedure signals and a second procedure function for communicating a plurality of optional procedure signals, said method comprising the steps of:
- transmitting, from said first communication apparatus to said second communication apparatus, a first standard procedure signal indicating that said first communication apparatus has the second procedure function;
- transmitting, responsive to the first standard procedure signal, a second standard procedure signal including information indicating communication of the optional procedure signals and a first optional procedure signal for the second procedure function from said second communication apparatus to said first communication apparatus;
- receiving at least the second standard procedure signal as a response signal corresponding to the first standard procedure signal in said first communication apparatus;
- and
- discriminating whether or not the information indicating to communicate the optional procedure signals has been set in the received second standard procedure signal, and determining, in a case where the first optional procedure signal has not been received from the destination, a reception error of the first optional procedure signal in accordance with the discrimination of the information in the second standard procedure signal, in said first communication apparatus.
Dependencies are inferred from the claim text.