Facsimile apparatus having communicating function of nonstandard procedure and communicating function of standard procedure
AssigneeCanon Kabushiki Kaisha
InventorTakehiro Yoshida
Life of this patent
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Abstract
According to the invention, when a communication in a nonstandard signal is not continuously established a predetermined number of times and pre-procedure errors occur at a predetermined ratio or more in the the predetermined number of times of communications, a communication is performed without transmitting the nonstandard signal such as an NSF signal or the like in the subsequent communication.
Claims20
A facsimile apparatus that performs communication functions of a nonstandard procedure and a standard procedure, said apparatus comprising:
- a first detector adapted to detect which of a communication by the nonstandard procedure and a communication by the standard procedure has been established;
- a second detector adapted to detect whether or not a pre-procedure error occurs in a respective pre-procedure before each communication of image data;
- and
- a controller adapted to inhibit a transmission process of a signal of the nonstandard procedure in a subsequent communication in a case where said first detector detects that communication by the nonstandard procedure is not continuously established for a predetermined number of consecutive communications and said second detector detects that pre-procedure errors occur at at least a predetermined ratio in the predetermined number of consecutive communications.
A communication method in a facsimile apparatus that performs communication functions of a nonstandard procedure and a standard procedure and that can be connected to a plurality of lines, said method comprising the steps of:
- transmitting a signal of the nonstandard procedure from a first line of the plurality of lines to a second line of the plurality of lines;
- and
- inhibiting all of the plurality of lines from transmitting a signal of the nonstandard procedure in a subsequent transmission, if the second line of the plurality of lines cannot receive the signal of the nonstandard procedure transmitted from the first line of the plurality of lines, while allowing all of the plurality of lines to transmit a signal of the nonstandard procedure in a subsequent transmission, if the second line of the plurality of lines can receive the signal of the nonstandard procedure transmitted from the first line of the plurality of lines.
A facsimile apparatus that performs communication functions of a nonstandard procedure and a standard procedure, said apparatus comprising:
- a first detector adapted to detect which of a communication by the nonstandard procedure and a communication by the standard procedure has been established;
- a second detector adapted to detect whether or not a pre-procedure error occurs in a respective pre-procedure before each communication of image data;
- and
- a controller adapted to change a number of flags between a nonstandard procedure signal and a standard procedure signal in a subsequent communication in a case where said first detector detects that communication by the nonstandard procedure is not continuously established for a predetermined number of consecutive communications and said second detector detects that pre-procedure errors occur at at least a predetermined ratio in the predetermined number of consecutive communications.
An apparatus according to claim 9, wherein the nonstandard procedure signal is an NSF signal of the T.30 recommendation.
A facsimile communication method of performing communication functions of a nonstandard procedure and a standard procedure, said method comprising:
- a first detection step of detecting which of a communication by the nonstandard procedure and a communication by the standard procedure has been established;
- a second detection step of detecting whether or not a pre-procedure error occurs in a respective pre-procedure before each communication of image data;
- and
- a control step of inhibiting a transmission process of a signal of the nonstandard procedure in a subsequent communication in a case where said first detection step detects that communication by the nonstandard procedure is not continuously established for a predetermined number of consecutive communications and said second detection step detects that pre-procedure errors occur at at least a predetermined ratio in the predetermined number of consecutive communications.
A facsimile communication method that performs communication functions of a nonstandard procedure and a standard procedure, said method comprising:
- a first detection step of detecting which of a communication by the nonstandard procedure and a communication by the standard procedure has been established;
- a second detection step of detecting whether or not a pre-procedure error occurs in a respective pre-procedure before each communication of image data;
- and
- a control step of changing a number of flags between a nonstandard procedure signal and a standard procedure signal in a subsequent communication in a case where said first detection step detects that communication by the nonstandard procedure is not continuously established for a predetermined number of consecutive communications and said second detection step detects that pre-procedure errors occur at at least a predetermined ratio in the predetermined number of consecutive communications.
A facsimile communication apparatus that performs communication functions of a nonstandard procedure and a standard procedure and that can be connected to a plurality of lines, said apparatus comprising:
- a signal transmitter adapted to transmit a signal of the nonstandard procedure from a first line of the plurality of lines to a second line of the plurality of lines;
- and
- a controller adapted to inhibit all of the plurality of lines from transmitting a signal of the nonstandard procedure in a subsequent transmission, if the second line of the plurality of lines cannot receive the signal of the nonstandard procedure transmitted from the first line of the plurality of lines, while allowing all of the plurality of lines to transmit a signal of the nonstandard procedure in a subsequent transmission, if the second line of the plurality of lines can receive the signal of the nonstandard procedure transmitted from the first line of the plurality of lines.
Dependencies are inferred from the claim text.