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Title:
ROTATIONAL PHASE CONTROL CIRCUIT
Document Type and Number:
Japanese Patent JPS63154089
Kind Code:
A
Abstract:

PURPOSE: To conform rotational phase automatically when apparatuses are transposed by extracting a certain fixed signal from a regenerative signal, obtaining difference with a reference signal, and adding the difference to the preset value of a phase comparison counter.

CONSTITUTION: A phase difference counter 20 counts phase difference between a certain fixed signal from a regenerative signal and a reference signal, and outputs a phase-difference count value E. When a difference between the phase- difference count value E and a phase-difference reference value F is obtained by a subtracter 24 (E-F=D: a phase shift section) and the difference section D is added to a preset value through an adder 25, a phase comparison counter 4 counts only by an interval (A-D). Accordingly, rotational phase can be conformed automatically even when rotational phase does not coincide by transposition, etc., between apparatuses.


Inventors:
UMEBAYASHI KAZUTO
Application Number:
JP1986000300365
Publication Date:
June 27, 1988
Filing Date:
December 16, 1986
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02P5/52; (IPC1-7): H02P5/52



 
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