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:
Dec. 01, 1998
Filed:
Nov. 22, 1995
Yves C Faroudja, Los Altos Hills, CA (US);
Dong Xu, San Jose, CA (US);
Other;
Abstract
A received 4-2-0 format, 2-1 interlaced digital component video signal is upconverted to a 4-2-2 format, 2-1 interlaced digital component video signal and a vertical chrominance bandwidth expansion enhancement signal is combined with the chrominance components in order to more closely simulate the wider bandwidth vertical chrominance resolution of the original 4:2:2 format signal from which the 4:2:0 format signal was derived. In a first embodiment, the vertical chrominance enhancement signal is derived from vertical transitions in the luminance component of the 4:2:0 format signal. In a second embodiment, the vertical chrominance enhancement signal is derived from vertical transitions in the luminance component of the 4:2:0 format signal when such vertical transitions are present and, in the absence of a luminance transition, the vertical chrominance enhancement signal is derived from the sampling-rate-reduced chrominance components of the 4:2:0 format signal. In all embodiments, the vertical chrominance enhancement signal is a 'bandwidth enhancement' signal which simulates a wide bandwidth vertical detail signal. The vertical chrominance detail signal is self-service from the 4:2:0 format video signal itself and requires no auxiliary signal to be transmitted or stored.