Method and apparatus for multiplexing and demultiplexing video data to identify reproducing state of video data

Patent metadata

Field	Value
Publication number	US-9788003-B2
Application number	US-201214130600-A
Country	US
Kind code	B2
Filing date	Jul 2, 2012
Priority date	Jul 2, 2011
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A method and apparatus for multiplexing and de-multiplexing video data. The method of multiplexing the video data involves syntax to a header of transmission unit data that is used to multiplex a clean random access (CRA) picture used in a random access, wherein the predetermined syntax indicates a reproduction status of the CRA picture, i.e., normal reproduction or reproduction according to a random access.

First claim

The invention claimed is:

1. A method for decoding a video, the method comprising:
receiving transmission unit data containing a header;
obtaining, from the header, type information that indicates a type of a current picture contained in the transmission unit data;
identifying whether the current picture is a CRA (Clean Random Access) picture for a random access based on the type information;
determining whether the identified CRA picture is decoded according to normal reproduction or according to a random access, based on a flag of the identified CRA picture; and
decoding the video including the identified CRA picture,
wherein the video includes a leading picture of the current picture that follows the current picture in a decoding order and precedes the current picture in a display order.

2. The method of claim 1 ,
wherein the identified CRA picture is split into a plurality of maximum coding units,
wherein one of the plurality of maximum coding units is split into a plurality of coding units by using split information parsed from a bitstream, and
wherein the identified CRA picture is decoded based on the plurality of coding units.

3. The method of claim 1 ,
wherein the transmission unit data is NAL (Network Abstraction Layer) unit data that is transmission unit data in a Network Abstraction Layer, and
wherein the type information is NAL unit type information that indicates the type of the current picture contained in the transmission unit data.

Assignees

• Park Young-O
• Choi Kwang-Pyo
• Kim Chan-Yul
• Yang Hee-Chul
• Samsung Electronics Co Ltd

Inventors

• Park Young-O
• Choi Kwang-Pyo
• Kim Chan-Yul
• Yang Hee-Chul

Classifications

• H04N19/503 Primary

  involving temporal prediction (adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109) · CPC title

• H04N7/24

  Systems for the transmission of television signals using pulse code modulation (H04N21/00 takes precedence) · CPC title

• H04N19/70

  characterised by syntax aspects related to video coding, e.g. related to compression standards · CPC title

• H04N21/6587

  Control parameters, e.g. trick play commands, viewpoint selection · CPC title

• H04N19/107 Primary

  between spatial and temporal predictive coding, e.g. picture refresh · CPC title