Patent ID: 8542067
Filing Date: 2013-09-24
Classification: G09G,H03L

Abstract:
1. An oscillation circuit that supplies predetermined oscillation signals to a generating circuit having: a divider which has a fixed division ratio, divides the predetermined oscillation signals with the division ratio and outputs divided signals; a phase comparator which compares a phase difference between a phase of a synchronization signal in image signals and a phase of the divided signals output from the divider; and a generator which generates sampling signals in a cycle based on comparison results from the phase comparator, the oscillation circuit comprising: a clock signal generating section that generates clock signals in the cycle based on the comparison results from the phase comparator; and a clock signal mask section which masks a part of the clock signals generated by the clock signal generating section to generate the predetermined oscillation signals and supplies the predetermined oscillation signals to the divider, wherein the clock signal mask section masks a part of the clock signals such that the cycle of the sampling signals generated by the generator is the same as a predetermined cycle which is the cycle of a clock for use in generating the image signals.