Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-08-08
1993-11-02
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358154, H04N 508
Patent
active
052588416
ABSTRACT:
In a horizontal synchronizing signal separation circuit, from a composite synchronizing signal which includes a horizontal synchronizing signal and a vertical synchronizing signal, a detection signal indicative of detection of a rising edge of the composite synchronizing signal is generated. A gate is provided through which the detection signal is passed in accordance with a control signal. The control signal is a pulse signal having a predetermined pulse width, which is generated by a circuit to which the output of the gate is input. The output of the gate is also supplied to another circuit which generates a separated horizontal synchronizing signal.
REFERENCES:
patent: 4963969 (1990-10-01), Kitaura
patent: 5132794 (1992-07-01), Okada
Okada Hisao
Tanaka Kuniaki
Uehira Shigeyuki
Groody James J.
Hsia Sherrie
Sharp Kabushiki Kaisha
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