Sampling clock generating circuit

A circuit generates a sampling clock which is used for the A-D conversion of a video signal. A master clock produced by a frequency synthesizer (1) is demultiplied in frequency at dividing ratio NS by a programmable frequency demultiplier (2) which is reset by the horizontal sync signal. The resulti...

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Bibliographische Detailangaben
1. Verfasser:	MAESHIMA, KAZUYA
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	A circuit generates a sampling clock which is used for the A-D conversion of a video signal. A master clock produced by a frequency synthesizer (1) is demultiplied in frequency at dividing ratio NS by a programmable frequency demultiplier (2) which is reset by the horizontal sync signal. The resulting sampling clock can have one of various frequencies depending on the combination of the frequency dividing ratio NM of the frequency synthesizer (1) and the frequency dividing ratio NS of the programmable frequency demultiplier (2) so that it is fit for various video signals.