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:
Jan. 20, 2009
Filed:
Jul. 07, 2005
Kazuya Matsumoto, Kyoto, JP;
Yasuyuki Doi, Kyoto, JP;
Kazuya Matsumoto, Kyoto, JP;
Yasuyuki Doi, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In order to correctly hold a low-amplitude input signal even when the operating speed of a display element drive apparatus is high, a differential signal including a pair of CLKPand CLKNis input to a first comparator and a second comparator in a manner that provides opposite phases between respective output voltage signals. An output of the first comparator is frequency-divided by the first frequency dividing flip-flop, while an output of the second comparator is frequency-divided by the second frequency dividing flip-flop. A first data holding flip-flop holds an input data signal in synchronization with a signal output by a first frequency dividing flip-flop, while a second data holding flip-flop holds an input data signal in synchronization with a signal output by a second frequency dividing flip-flop.