Communication apparatus capable of performing facsimile communication, control method therefor, and storage medium storing control program therefor
AssigneeCanon Kabushiki Kaisha
InventorEiji Ohara
Life of this patent
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Abstract
A communication apparatus capable of storing a facsimile signal with high quality. A modem processing unit performs facsimile communication. A modulated digital signal storing unit stores a digital signal that is modulated by the modem processing unit in order to transmit to an opposite-side apparatus in the facsimile communication into a storage unit without converting into an analog signal. A demodulated digital signal storing unit stores a digital signal that is obtained by demodulating a signal received from the opposite-side apparatus in the facsimile communication by the modem processing unit into the storage unit.
Claims6
A communication apparatus comprising:
- a modem processing unit configured to perform facsimile communication;
- a modulated digital signal storing unit configured to store into a storage unit a first pulse code modulated (PCM) digital signal that is modulated by said modem processing unit, for transmission to an opposite-side apparatus in the facsimile communication without converting the first PCM digital signal to a first analog signal;
- a network interface control unit configured to transmit the stored first PCM digital signal to the opposite-side apparatus without converting the first PCM digital signal to the first analog signal;
- and
- a demodulated digital signal storing unit configured to store into the storage unit a second digital signal that is obtained by demodulating a received second PCM digital signal received from the opposite-side apparatus in the facsimile communication by said modem processing unit,
- wherein the second PCM digital signal is received from the opposite-side apparatus without conversion from a second analog signal.
A control method for a communication apparatus having a modem processing unit that performs facsimile communication, the control method comprising:
- a modulated digital signal storing step of storing into a storage unit a first pulse code modulated (PCM) digital signal that is modulated by said modem processing unit, for transmission to an opposite-side apparatus in the facsimile communication without converting the first PCM digital signal to a first analog signal;
- a network interface control step of transmitting the stored first PCM digital signal to the opposite-side apparatus without converting the first PCM digital signal to the first analog signal;
- and
- a demodulated digital signal storing step of storing into the storage unit a digital signal that is obtained by demodulating a received second PCM digital signal received from the opposite-side apparatus in the facsimile communication by the modem processing unit,
- wherein the second PCM digital signal is received from the opposite-side apparatus without conversion from a second analog signal.
A non-transitory computer-readable storage medium storing a control program causing a computer to execute a control method for a communication apparatus having a modem processing unit that performs facsimile communication, the control method comprising:
- a modulated digital signal storing step of storing into a storage unit a first pulse code modulated (PCM) digital signal that is modulated by said modem processing unit, for transmission to an opposite-side apparatus in the facsimile communication without converting the first PCM digital signal to a first analog signal;
- a network interface control step of transmitting the stored first PCM digital signal to the opposite-side apparatus without converting the first PCM digital signal to the first analog signal;
- and
- a demodulated digital signal storing step of storing into the storage unit a digital signal that is obtained by demodulating a received second PCM digital signal received from the opposite-side apparatus in the facsimile communication by the modem processing unit,
- wherein the second PCM digital signal is received from the opposite-side apparatus without conversion from a second analog signal.
Dependencies are inferred from the claim text.