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. 17, 2015
Filed:
Sep. 07, 2012
Wei-ying Kung, San Diego, CA (US);
Xue Fang, San Diego, CA (US);
Jae Hoon Kim, Santa Clara, CA (US);
Wei-Ying Kung, San Diego, CA (US);
Xue Fang, San Diego, CA (US);
Jae Hoon Kim, Santa Clara, CA (US);
Google Technology Holdings LLC, Mountain View, CA (US);
Abstract
A system includes an encoder that performs quantization on a rectangular block of quantized transform coefficients and a decoder that performs dequantization on a rectangular block of transform coefficients. The decoder is configured to receive a W×H block of quantized transform coefficients, wherein W is a row width of the block and H is a column height of the block. The decoder is further configured to apply dequantization processing to the W×H block of quantized transform coefficients to generate a block of transform coefficients, which are used to generate a picture corresponding to the W×H block of quantized transform coefficients. The dequantization processing comprises applying a first dequantization algorithm when an output M of a function M=log(√{square root over (W·H)}) is equal to an integer value, and applying a second dequantization algorithm when the output M is equal to a non-integer value.