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:
Apr. 27, 2004
Filed:
Jun. 25, 1998
Nobukazu Hosoya, Nara, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
Predetermined frequency components contained in a luminance signal are extracted by BPF ( )-( ), and amplified by limited amplifiers ( )-( ). As a result, an addition signal, including a luminance signal component amplified and suppressed and a noise component amplified, is obtained from an adder ( ). The luminance signal is also supplied through an HPF ( ) and adjusted in level by an amplifier ( ). Therefore, a noise component is obtained from a subtracter ( ) by subtracting an amplified signal from the addition signal by a subtracter ( ). A subtracter ( ) subtracts this noise component from the luminance signal supplied from a delay circuit ( ), thereby outputting a luminance signal reduced of noise through an output terminal (S ). Because the luminance signal is separated into a plurality of bands by the plurality of BPFs, there is no possibility of saturating in noise component by the limiters, thus fully removing noise.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile