Synchronization signal generating circuit

Details Synchronization signal generating circuit Synchronization signal generating circuit

1993-05-14

1996-05-21

Rogers, Scott A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

347250, H04N 123, B41J 247

Patent

active

055195008

ABSTRACT:
A synchronization signal generating circuit generates a synchronization signal used to output read data sequentially in a specified period. This circuit is provided with a clock generator means for generating a reference clock, a first counter unit for counting the reference clock; a synchronization signal generator for generating the synchronization signal in a first period in accordance with a count value of the first counter unit; a second counter unit for counting the generation of the synchronization signal; a resetter for resetting the second counter unit when a count value of the second counter unit reaches a specified value; and a period changer for controlling the synchronization signal generator so as to generate the synchronization signal in a second period only when the count value of the second counter unit reaches the specified value. Accordingly, a shift amount of the period of the synchronization signal relative to the specified period in which data are output sequentially does not exceeds a predetermined level.

REFERENCES:
patent: 4905022 (1990-02-01), Nagasawa
patent: 5194879 (1993-03-01), Kotabe et al.

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