Data correction circuit

Abstract

A time code correction circuit is formed of an input circuit for receiving an input time code; first and second memories for storing data representing the time code; an adder for selectively incrementing or decrementing data to be supplied to the first and second memories; a comparator comparing the data stored in the first memory with the input time code; a switch controlled by the comparator for selectively supplying the adder with the input time code and the data started second memory; and an output circuit coupled to provide the contents of the second memory as a corrected output time code. Where the time code is reproduced from a time code track recorded on a magnetic tape, the correction circuit is favorably adapted to produce a continuous time code sequence despite dropout in the recorded time code. Also, if a jump occurs in the recorded time code sequence, the correction circuit causes the output time code to reflect such jump with a minimum of signal disturbance.

Dependencies are inferred from the claim text.