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:
Jan. 24, 1989
Filed:
Jan. 20, 1988
Kazuhiro Kamemoto, Kumagaya, JP;
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Abstract
A progressive scanning conversion circuit for converting video signals corresponding to an original image from a predetermined format video signals having an increased scan line rate, the video signals each having a brightness level corresponding to a portion of the original image. The progressive scanning conversion circuit includes a scan line rate increasing circuit (32) responsive to receipt of a video signal having the interlace format scan line rate for increasing the scan line rate of the video signal to form a progressive format video signal, a luminance signal generating circuit (36) for generating a luminance signal corresponding to the brightness level of the corresponding portion of the original image in response to the progressive format video signal, a brightness compensation circuit (34) for generating a brightness compensation signal in response to the luminance signal, and a drive circuit (30) for amplifying the progressive format video signal and adjusting the brightness level thereof in response to the compensation signal.