Video-information encoding method and video-information decoding method
AssigneeSony Corporation
InventorsYoichi Yagasaki, Osamu Sunohara, Jun Murayama
Life of this patent
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Abstract
A video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. By limiting the amount of data to be input into/output from a CABAC encoding unit and decoding unit on a unit-of-encoding basis, such as one picture, slice, macroblock or block, and by encoding uncompressed video data, it is possible to provide a video-information encoding apparatus and decoding apparatus with a guarantee of a fixed processing time. Thereby, an apparatus with a guarantee of the processing time can be mounted.
Claims4
A video encoding apparatus for encoding a video signal, comprising:
- encoding means for performing an arithmetic encoding process using a context value on the video signal and generating a bit stream including raw data of the video signal in a unit of encoding;
- determining means for determining if the unit of encoding in the bit stream is encoded as the raw data;
- and
- controlling means for, when the determining means determines that the unit of encoding includes the raw data, controlling the arithmetic encoding process so as to terminate the arithmetic encoding process for the unit of encoding that includes the raw data, for maintaining a context value previously used in the arithmetic encoding process for a unit of encoding immediately before the unit of encoding that includes the raw data of the video signal, and for inserting a bit subjected to a terminal process of the arithmetic encoding process into the bit stream.
A video encoding method for encoding a video signal, comprising:
- performing an arithmetic encoding process using a context value on the video signal and generating a bit stream including raw data of the video signal in a unit of encoding;
- determining if the unit of encoding in the bit stream is encoded as the raw data;
- and
- controlling, when the determining determines that the unit of encoding includes the raw data, the arithmetic encoding process so as to terminate the arithmetic encoding process for the unit of encoding that includes the raw data, maintaining a context value previously used in the arithmetic encoding process for a unit of encoding immediately before the unit of encoding that includes the raw data of the video signal, and inserting a bit subjected to a terminal process of the arithmetic encoding process into the bit stream.
A video encoding apparatus for encoding a video signal, comprising:
- an encoder configured to perform an arithmetic encoding process using a context value on the video signal and to generate a bit stream including raw data of the video signal in a unit of encoding;
- a determining unit configured to determine if the unit of encoding in the bit stream is encoded as the raw data;
- and
- a controller, including a processor, configured to control, when the determining unit determines that the unit of encoding includes the raw data, the arithmetic encoding process so as to terminate the arithmetic encoding process for the unit of encoding that includes the raw data, to maintain a context value previously used in the arithmetic encoding process for a unit of encoding immediately before the unit of encoding that includes the raw data of the video signal, and to insert a bit subjected to a terminal process of the arithmetic encoding process into the bit stream.
Dependencies are inferred from the claim text.