SEMICONDUCTOR INTEGRATED CIRCUIT

PROBLEM TO BE SOLVED: To provide the integrated circuit that incorporates a frequency variable control circuit whose horizontal frequency is revised to a plurality of kinds easily coping with increase in a frequency variable number regardless of a miniaturized simple configuration to which one reson...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUO HIDETOMO, SUMIYOSHI HAJIME
Format:	Patent
Sprache:	eng
Schlagworte:	AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GENERATION OF NOISE BY SUCH CIRCUITS GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide the integrated circuit that incorporates a frequency variable control circuit whose horizontal frequency is revised to a plurality of kinds easily coping with increase in a frequency variable number regardless of a miniaturized simple configuration to which one resonator is externally connected. SOLUTION: The integrated circuit is provided with a VCO 10, a frequency divider circuit 11 that frequency-divides an output signal of the VCO 10 a frequency division ratio control circuit 12 that controls a frequency dividing ratio of the frequency divider circuit, an adjustment circuit 13 that is controlled by the frequency division ratio control circuit 12 to adjust a control input to the VCO 10, and a terminal 14 by which one resonator 16 at the outside of the integrated circuit is connected electrically to the VCO 10.