Communication apparatus

Details Communication apparatus Communication apparatus

1997-04-11

2000-03-21

Au, Amelia

Facsimile and static presentation processing

Facsimile

Auxiliary signal

358442, 358438, H04N 100

Patent

active

060409215

ABSTRACT:
A communication apparatus performs a maintenance operation in a short period of time, without using a communication apparatus which includes a special communication protocol on a maintenance side. In a facsimile machine 24, upon receipt of a DTMF signal on a communication line 1, the DTMF signal is supplied to a modem 8 through a relay 3 and a transformer T1. This is done such that the modem 8 converts the received DTMF signal into a code signal such as 1 to 0, * and # and supplies the code signal to a CPU 16 through a data bus, formed by a gate array 11 and a main gate array 23. The CPU 16 stores the code in a temporary storage RAM 19, digit by digit. In the meantime, when it is determined that the code signal is "96#," from a RAM 17, the CPU 16 reads a functional parameter associated with the number of a soft switch which is temporarily stored in the RAM 19. Among data regarding the soft switch, the CPU 16 changes data which are associated with a data number which is temporarily stored in the RAM 19 into a changed value which is also temporarily stored in the RAM 19 and writes the changed value in the RAM 17 again.

REFERENCES:
patent: 5153912 (1992-10-01), Sakakibara et al.
patent: 5226074 (1993-07-01), Han
patent: 5544234 (1996-08-01), Terajima et al.
patent: 5748715 (1998-05-01), Shinagawa et al.
patent: 5793844 (1998-08-01), Matsuda

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