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Method and apparatus for changing codec

A codec and coding technology, which is used in the field of changing codecs and devices, and can solve problems such as discontinuous reproduction of video or audio

Inactive Publication Date: 2007-11-07
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, since it is assumed that a broadcast program within a channel is usually encoded with a single codec, when a broadcast program within a channel is encoded with a different codec for transmission, the channel buffer is cleared and initialized as if it were in multiple codecs. Channel changes are performed as well, so video or audio reproduction may be discontinuous when codec changes occur

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  • Method and apparatus for changing codec
  • Method and apparatus for changing codec
  • Method and apparatus for changing codec

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Embodiment Construction

[0021] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments described in detail herein; rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will enable the present The principles of the invention are fully conveyed to those skilled in the art. Like reference numerals denote like elements in the figures.

[0022] In an apparatus and method for changing a codec to reproduce a video and / or audio data stream according to an exemplary embodiment of the present invention, the codec change-related information contained in a predetermined packet is used to predetermine the The position of the program element in the video and / or audio data stream in the buffer where the codec changed, and when de...

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Abstract

A method and apparatus for changing codecs to reproduce video and / or audio data streams are provided. The method and apparatus are capable of seamlessly reproducing video and / or audio data streams encoded with two or more different codecs when a change of codecs occurs by determining in advance the start position of a program element at which a change of codecs occurs among video and / or data streams stored in buffers using information regarding a change of codecs included in a data packet and changing the codec used for decoding at the moment when the program element at which the change of codec occurs is first decoded.

Description

[0001] Cross references to related patent applications [0002] This application claims priority from Korean Patent Application No. 10-2006-0002715 filed with the Korean Patent Office on Jan. 10, 2006, the entire disclosure of which is hereby incorporated by reference. technical field [0003] Methods and apparatus according to the present invention relate to changing codecs to reproduce video and / or audio data streams, and more particularly to changing codecs to seamlessly reproduce video encoded within channels using different codecs and / or audio data stream. Background technique [0004] Digital broadcasting through various media such as terrestrial waves, satellite waves, cables, etc. has become more and more popular. Digital broadcasting can be classified into terrestrial broadcasting based on Advanced Television Systems Committee (ATSC) standards, satellite broadcasting based on Digital Video Broadcasting (DVB), and cable broadcasting based on OpenCable. In the trans...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/52H04N7/24H04N5/93H04N7/173H04N19/00H04N19/102H04N19/134H04N19/189H04N19/44H04N19/46H04N19/70H04N21/426H04N21/438
CPCH04N21/4341H04N21/434H04N21/4345H04N21/8193H04N21/435H04N21/235H04N21/44008H04N19/103
Inventor 郑春植咸喆熙崔允镐
Owner SAMSUNG ELECTRONICS CO LTD