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:
Feb. 03, 2009
Filed:
Oct. 28, 2004
Andrew David Raine Cotton, Middlesex, GB;
Michael James Knee, Petersfield, GB;
Andrew David Raine Cotton, Middlesex, GB;
Michael James Knee, Petersfield, GB;
Snell & Wilcox Limited, Hampshire, GB;
Abstract
In a video encoder a prediction signal at a bit resolution of P is subtracted from an input signal received at a bit resolution of P+Δ, where P is typically 8 bits, and P+Δ, 10 bits. A transform is then performed on the result, the output of which transform being at a bit resolution of at least P+Δ. The transformed signal is quantized, and the quantized signal used to form the prediction signal. The quantized signal is then coded for downstream delivery. At a decoder, the process is inverted, preserving the extra Δ bits input to the encoder.