The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 2012
Filed:
Aug. 14, 2009
Yasuhiro Hori, Tokyo, JP;
Koichi Sato, Kanagawa, JP;
Takeshi Inagaki, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A video signal synchronization signal generating apparatus for making a display reference synchronization signal Vb that serves as a reference of video display and has a first frequency and an input synchronization signal Vi that constitutes images and has a second frequency synchronized with each other, the apparatus including: a frequency ratio generating section configured to divide a frequency that is double the first frequency by the second frequency to calculate a frequency ratio n; a Vx generation comparator circuit section configured to generate coincidence signal Vx' having pulses that are inserted by equally dividing one period of the input synchronization signal Vi by the frequency ratio n; and a Vx generation circuit section configured to remove the alternate pulses of the coincidence signal Vx′ to generate synchronization signal Vx of a same phase as the phase of the input synchronization signal Vi.