Communication apparatus

Details Communication apparatus Communication apparatus

1997-07-03

1998-04-21

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Facsimile memory monitoring

358406, 358437, H04N 100

Patent

active

057424020

ABSTRACT:
A facsimile apparatus and a facsimile communication method prevent the termination of communication in error due to memory capacity shortage when confidential communication or relay designation communication is effected by using a sub-address additionally recommended by the CCITT/T.30. When a remaining capacity of an image memory is smaller than a preset threshold, sub-address control information representing the invalidity of the sub-address is stored in sub-address control memory means. As a result, when an initial identification signal or a send command signal is sent to a destination station, a bit indicating that the sub-address is valid is sent without being set. Namely, the invalidity of the sub-address function is informed to the destination station. Thus, the confidential reception or the relay designation reception using the sub-address is not accepted and the termination of the communication in error due to the memory capacity shortage is avoided.

REFERENCES:
patent: 5091790 (1992-02-01), Silverberg
patent: 5130818 (1992-07-01), Tadokoro
patent: 5283665 (1994-02-01), Ogata
patent: 5331424 (1994-07-01), Matsui et al.

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