Communication apparatus, communication method, image forming...

Details Communication apparatus, communication method, image forming... Communication apparatus, communication method, image forming...

2007-12-18

2007-12-18

Popovici, Dov (Department: 2625)

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

C358S001150

Reexamination Certificate

active

09791547

ABSTRACT:
A sampling unit samples plural input signals, and detects a point (change point) at which one of the sampled input signals shows a change in the logic level. In case the logic level after the detection of the change point continues for a predetermined time, the plural sampled data are respectively latched or outputted after the lapse of the predetermined time, and, in any other timing, the sampled data are held, thereby obtaining plural noise-eliminated signals. One of the plural input signals is a clock signal, and, in case of data transmission in synchronization with such clock signal, the transmission is executed with a timing synchronized with the noise-eliminated signal. The predetermined time is selected equal to or less than ¼ of the cycle period of the communication synchronization clock signal.

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patent: 4733310 (1988-03-01), Kapp et al.
patent: 4839908 (1989-06-01), Takayama
patent: 6163164 (2000-12-01), Inoue
patent: 53-142157 (1978-12-01), None
patent: 58-205327 (1983-11-01), None

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