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:
Nov. 22, 1994
Filed:
Oct. 20, 1992
Tsuyoshi Hirano, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
In the velocity modulation apparatus for a three-tube projection television, an effective velocity modulation can be implemented under due consideration of humans eye's relative visibility characteristics with respect to the three primary colors of R, G and B, and the velocity modulation apparatus includes a VM signal extracting circuit 1 for extracting a velocity modulation (VM) signal from the luminance signal; a plurality of driving circuits 3 to 5 having three different gains at ratios of 0. 3:0. 59:0. 11; and a red color VM coil 7, a green color VM coil 8 and a blue color VM coil 9 provided for three corresponding Braun tubes, respectively and driven by the driving circuits 3 to 5, respectively. Since the respective gains of the driving circuits 3 to 5 are previously determined in correspondence to the eye's relative visibility of the three primary colors of R, G and B, it is possible to perform the velocity modulation being based on the practical emphasis at picture image contours, and thereby to eliminate wasteful power consumption.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile