Image communication apparatus capable of performing facsimile communication via IP network, method of controlling the same, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorYutaka Inoue
Life of this patent
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Abstract
The present invention provides a technique that enables an image communication apparatus capable of performing voice communication and T.30 in-band FAX communication over the IP network to positively detect a CNG signal and achieve switching to FAX reception in the answerphone connection mode and the FAX/TEL-switching mode. The communication apparatus includes a MODEM that controls facsimile communication and a SLIC that controls a telephone. A selector includes switches for connecting the IP network and the MODEM, and switches for connecting the IP network and the SLIC. A CPU controls the switches of the selector such that signals from the IP network are supplied to both of the MODEM and the SLIC.
Claims17
A communication apparatus that executes communication via an IP network, the communication apparatus comprising:
- a facsimile controller including a tone detector configured to detect a CNG signal, and configured to control facsimile communication;
- a telephone controller configured to control a telephone;
- a selector configured to control whether to supply input signals from the IP network to both the facsimile controller and the telephone controller, or to either the facsimile controller or the telephone controller;
- and
- a setting unit configured to set a reception mode of the communication apparatus from among a plurality of reception modes including an answerphone connection mode where a facsimile reception starts when the CNG signal is detected,
- wherein the selector provides control, when the answerphone mode has been set by the setting unit:
- according to a call for voice communication being received, so that the input signals from the IP network are supplied to both the facsimile controller and the telephone controller;
- and
- according to the tone detector detecting the CNG signal, so that the input signals from the IP network are supplied to the facsimile controller and are prevented from being supplied to the telephone controller, and
- wherein after the selector provides control so that the input signals from the IP network are supplied to the facsimile controller and are prevented from being supplied to the telephone controller, the facsimile controller executes in-band facsimile communication via the IP network.
A method of controlling a communication apparatus that executes communication via an IP network, including a facsimile controller, including a tone detector configured to detect a CNG signal, configured to control facsimile communication, a telephone controller configured to control a telephone, a selector configured to control whether to supply input signals from the IP network to both the facsimile controller and the telephone controller or to either the facsimile controller or the telephone controller, and a setting unit configured to set a reception mode of the communication apparatus from among a plurality of reception modes including an answerphone connection mode where a facsimile reception starts when the CNG signal is detected, the method comprising:
- a first control step of providing control using the selector, when the answerphone mode has been set by the setting unit, according to a call for voice communication being received, so that the input signals from the IP network are supplied to both the facsimile controller and the telephone controller;
- a second control step of providing control using the selector, when the answerphone mode has been set, according to the tone detector detecting the CNG signal, so that the input signals from the IP network are supplied to the facsimile controller and are prevented from being supplied to the telephone controller;
- and
- a facsimile communication step of executing using the facsimile controller, after the second control step, in-band facsimile communication via the IP network.
A non-transitory computer-readable storage medium storing a computer-executable control program for causing a computer to execute a method of controlling a communication apparatus that executes communication via an IP network, including a facsimile controller, including a tone detector configured to detect a CNG signal, configured to control facsimile communication, a telephone controller configured to control a telephone, a selector configured to control whether to supply input signals from the IP network to both the facsimile controller and the telephone controller or to either the facsimile controller or the telephone controller, and a setting unit configured to set a reception mode of the communication apparatus from among a plurality of reception modes including an answerphone connection mode where a facsimile reception starts when the CNG signal is detected, the method comprising:
- a first control step of providing control using the selector, when the answerphone mode has been set by the setting unit, according to a call for voice communication being received, so that the input signals from the IP network are supplied to both the facsimile controller and the telephone controller;
- a second control step of providing control using the selector, when the answerphone mode has been set, according to the tone detector detecting the CNG signal, so that the input signals from the IP network are supplied to the facsimile controller and are prevented from being supplied to the telephone controller;
- and
- a facsimile communication step of executing using the facsimile controller, after the second control step, in-band facsimile communication via the IP network.
Dependencies are inferred from the claim text.