Patent ID: 7665004
Filing Date: 2010-02-16
Classification: G01R

Abstract:
1. A timing generator for generating a timing edge at a specified timing within a basic period comprising; a counter for performing counting operation synchronizing with reference clock signals of a predetermined period; a timing data output unit for outputting data for each of a quotient and a remainder obtained by dividing time from the start of said basic period to the point of generating said timing edge by the period of said reference signals; an elapsed time determination unit for determining that time corresponding to said quotient, which is indicated by data outputted from said timing data output unit, has elapsed, on the basis of a count value of said counter, and for outputting a determination signal in accord with the timing of the determination; a jitter generation unit for outputting time, by which the output timing of said timing edge should be delayed, as a jitter amplitude value; an adding unit for performing additions of a first time corresponding to said remainder indicated by the data outputted from said timing data output unit, and a second time indicated by said jitter amplitude value outputted from said jitter generation unit; and a variable delay unit to which the determination signal outputted from said elapsed time determination unit is inputted so as to be outputted with a delay by the time indicated by an addition result obtained from said adding unit.