Search International and National Patent Collections

1. (WO2013119325) METHOD AND APPARATUS FOR USING AN ULTRA-LOW DELAY MODE OF A HYPOTHETICAL REFERENCE DECODER

Pub. No.:    WO/2013/119325    International Application No.:    PCT/US2012/070943
Publication Date: Fri Aug 16 01:59:59 CEST 2013 International Filing Date: Fri Dec 21 00:59:59 CET 2012
IPC: H04N 7/26
Applicants: THOMSON LICENSING
Inventors: ZHU, Lihua
GOEDEKEN, Richard Edwin
BORUNDA, Garrett James
Title: METHOD AND APPARATUS FOR USING AN ULTRA-LOW DELAY MODE OF A HYPOTHETICAL REFERENCE DECODER
Abstract:
A method and apparatus are provided for using an ultra-low delay mode of a hypothetical reference decoder. The method is provided in a video decoder, and includes defining (320) a hypothetical reference decoder timing model to specify timing constraints based on an arrival time and a removal time of hypothetical reference decoder access units included in a video bitstream with respect to a hypothetical reference decoder buffer. The hypothetical reference decoder access units are selected from among a slice access unit and a picture access unit. The method also includes evaluating (325) the video bitstream for conformance to requirements of the hypothetical reference decoder buffer based on the hypothetical reference decoder timing model.