Voltage level control circuit and associated method

Patent metadata

Field	Value
Publication number	US-8937684-B2
Application number	US-201113316749-A
Country	US
Kind code	B2
Filing date	Dec 12, 2011
Priority date	Dec 17, 2010
Publication date	Jan 20, 2015
Grant date	Jan 20, 2015

Abstract

A voltage level control circuit controls a target slicing voltage level to slice a video signal by a target circuit. The voltage level control circuit includes a slicing circuit for sequentially slicing the video signal by a plurality of slicing voltage levels to correspondingly generate a plurality of first clock signals; a detection circuit for respectively detecting a plurality of phase differences between the first clock signals and a plurality of corresponding second clock signals to generate a plurality of detection signals; an oscillating circuit for generating the second clock signals according to the detection signals, respectively; and an adjusting circuit for determining whether to adjust the target slicing voltage level according to the detection signals corresponding to the slicing voltage levels.

First claim

What is claimed is:

1. A voltage level control circuit, for controlling a target slicing voltage level used to slice a video signal by a target circuit, the voltage level control circuit comprising:
a slicing circuit, for slicing the video signal by sequentially adopting a plurality of slicing voltage levels to correspondingly generate a plurality of first clock signals;
a detection circuit, for respectively detecting a plurality of phase differences between the first clock sign…

Assignees

• Wu Shao-Chih
• Chen Chien-Hung
• Wong Wei-Shu
• Mstar Semiconductor Inc

Inventors

• Wu Shao-Chih
• Chen Chien-Hung
• Wong Wei-Shu

Classifications

• H04N5/08 Primary

  Electricity · mapped topic