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:
Oct. 15, 2002
Filed:
Sep. 27, 1999
Sony Corporation, Tokyo, JP;
Abstract
This invention relates to a video signal converter, a conversion method of video signal, respectively suitable to be applied when a video signal according to National Television System Committee (NTSC) is illustratively converted to a video signal corresponding to an extended graphics array (XGA), an image display unit using the converter and conversion method, and a television receiver. A signal in each field of a video signal S according to NTSC in which the number of lines is 252.5 (effective line number is 240) is converted to a signal in each frame of a video signal S corresponding to XGA in which the number of lines is 840 (effective line number is 768). A video signal converter is composed of an image adaptive double-speed conversion circuit for converting a video signal S to a video signal S according to an interlaced scanning method in which the number of lines is doubled and an interpolation circuit for converting the video signal S to a video signal S . A video signal S acquired by image adaptive conversion processing is a video signal of high image quality. A video signal S acquired by interpolation processing based upon the video signal S is a video signal of high image quality free of the deterioration of the quality of an image, compared with a video signal S acquired only by interpolation processing based upon a video signal S .