System multiplexing apparatus preventing overflow of audio decoder buffer
AssigneeRenesas Technology Corp.
InventorsYoshinori Matsuura, Hiroshi Segawa
Life of this patent
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Abstract
A time zone start time point calculating unit calculates a time zone to be set in a VOBU in accordance with audio bit rate. A time zone comparing unit compares a time point at which an audio pack is to be multiplexed with the time zone calculated by the time zone start time point calculating unit. A flag setting unit sets whether the audio pack is to be completed or not in accordance with the result of comparison by the time zone comparing unit. Therefore, a completing process takes place before a VOBU boundary, and a completed PCK will not be generated immediately after the VOBU boundary. Thus, generation of a buffer overflow can be prevented.
Claims6
A system multiplexing apparatus outputting a video pack and an audio pack multiplexed with each other, comprising:
- a calculating unit calculating a time zone to be set in a video object unit, in accordance with audio bit rate;
- a comparing unit comparing a time point of multiplexing the audio pack with the time zone calculated by said calculating unit;
- and
- a setting unit setting whether the audio pack is to be completed or not in accordance with the result of comparison by said comparing unit.
A system multiplexing apparatus outputting a video pack and an audio pack multiplexed with each other, comprising:
- a comparing unit comparing a time point of multiplexing the audio pack with a time zone set in advance in a video object unit;
- and
- a setting unit setting whether the audio pack is to be completed or not in accordance with the result of comparison by said comparing unit.
Dependencies are inferred from the claim text.