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:
Aug. 26, 2014
Filed:
Nov. 20, 2010
Arun Shankar Kudana, Bangalore, IN;
Ajit Venkat Rao, Bangalore, IN;
Soyeb Nagori, Bangalore, IN;
Manoj Koul, Bangalore, IN;
Zhan MA, Brooklyn, NY (US);
Do-kyoung Kwon, Allen, TX (US);
Arun Shankar Kudana, Bangalore, IN;
Ajit Venkat Rao, Bangalore, IN;
Soyeb Nagori, Bangalore, IN;
Manoj Koul, Bangalore, IN;
Zhan Ma, Brooklyn, NY (US);
Do-Kyoung Kwon, Allen, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
In a video encoder, pixel values of a macro-block are processed to determine an activity measure indicative of the type of content in the macro-block. Several techniques are employed for determining the activity measure of a macro-block. In an embodiment, a default quantization scale for quantizing a macro-block is modified based on the activity measure of the macro-block. In another embodiment, the macro-block is classified into one of multiple classes based on its activity measure. The default quantization scale for quantizing the macro-block is modified based on the classification of the macro-block. In yet another embodiment, an encoding mode to be used for encoding a macro-block is also determined on the basis of the class of the macro-block. Several of the techniques exploit the fact that the human visual system (HVS) has different sensitivities in perceiving a (rendered) macro-block or video frame, depending on the type of macro-block content.