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:
Jun. 01, 1999
Filed:
Feb. 18, 1997
Takahisa Hatano, Sapporo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A Y/C separation apparatus separating a luminance signal and a chrominance signal from a composite color television signal includes a high band level detection circuits for detecting a high band level of each input signal and a judge circuit for controlling Y/C separation and selects one of filters to pass the input signal according to the high band levels detected by the high band level detection circuits and controls a separated chrominance signal component. As a result, when the high band level is small, a horizontal BPF is selected and even when the input signal is a black or white video signal without chrominance signal, dot interference is not conspicuous.