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:
Aug. 26, 1997
Filed:
Mar. 15, 1994
Fumiaki Honda, Takatsuki, JP;
Nobukazu Hosoya, Ikoma-gun, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A television circuit (10) according to the invention includes a multiplier (12), and a voltage signal (V1) is outputted from an LPF (22) in accordance with the presence or absence of a color burst signal which is to be inputted to the multiplier (12). A rectangular-wave signal (Va) is obtained on the basis of the voltage signal (V1) through a peak holding circuit (24) and a sampling/holding circuit (42). A rectangular-wave signal (Vc) is obtained by averaging the rectangular-wave signal (Va) and a rectangular-wave signal (Vb) which is obtained by delaying the signal (Va) by a 1H delay circuit (44) by an adder (46) and a 1/2 multiplication circuit (48). On the basis of the rectangular-wave signal (Vc), a voltage signal (V3) is produced by an LPF (52) having a relatively small time constant, which is compared with a reference voltage (Vref) by a level-comparator (54), whereby a signal is outputted. The signal is used as a color killer signal for a color killer circuit, for example.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile