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. 17, 1997
Filed:
Jan. 26, 1994
Mitsumo Kawano, Saitama-ken, JP;
Takahiro Kusano, Saitama-ken, JP;
Kabushiki Kaisha Toshiba, , JP;
Abstract
A luminance signal/color signal separator circuit having an input terminal and luminance and color output terminals includes a comb filter connected between the input terminal and the color output terminal; an amplitude detector having an input connected to the color output terminal; a filter having a first input connected to the input terminal and a second input connected to an output of the amplitude detector; and a combiner having an output connected to the luminance output terminal, a first input connected to the input terminal and a second input connected to an output of the filter. The separator circuit processes a composite signal which includes an original luminance signal and an original color signal. The filter passes a gain controlled color band signal. A signal at the luminance output terminal includes a signal component characterized by an amplitude in a color band frequency range, and the combiner outputs the signal having a signal component amplitude as (1) a first amplitude when the original color amplitude is small, and (2) a second amplitude when the original color amplitude is large, the first amplitude being greater than the second amplitude.