Contents Generator and Method
First Claim
Patent Images
1. A contents generator for generating a time-stamped AV stream from an AV stream which is a packet stream including packetized video and/or audio data, the contents generator comprising:
- a packetizing unit for packetizing at least one multimedia data file;
a time-stamp generating unit for generating a time stamp indicating the presentation timing of each packet which has been packetized by the packetizing unit based on the multimedia data file transmission time, data transmission bit rate, and the AV stream time stamp and/or based on the multimedia data file transmission clock and AV stream time stamp;
a multimedia data stream generating unit for generating a time-stamped multimedia data stream sharing the time base of the time-stamped AV stream by providing a time stamp generated by the time-stamp generating unit to each packet corresponding to that time stamp; and
a time-stamped content stream generating unit for generating a time-stamped content stream by combining the time-stamped AV stream and the time-stamped multimedia data stream based on the time stamps of the time-stamped AV stream and the time-stamped multimedia data stream.
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Abstract
Time stamped streams respectively generated by an AV stream generating means and data stream generating means are combined by a time-stamped contents generating means. Consequently, a time-stamped contents stream is generated which synchronizes the processing of an AV stream and multimedia data.
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Citations
13 Claims
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1. A contents generator for generating a time-stamped AV stream from an AV stream which is a packet stream including packetized video and/or audio data, the contents generator comprising:
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a packetizing unit for packetizing at least one multimedia data file; a time-stamp generating unit for generating a time stamp indicating the presentation timing of each packet which has been packetized by the packetizing unit based on the multimedia data file transmission time, data transmission bit rate, and the AV stream time stamp and/or based on the multimedia data file transmission clock and AV stream time stamp; a multimedia data stream generating unit for generating a time-stamped multimedia data stream sharing the time base of the time-stamped AV stream by providing a time stamp generated by the time-stamp generating unit to each packet corresponding to that time stamp; and a time-stamped content stream generating unit for generating a time-stamped content stream by combining the time-stamped AV stream and the time-stamped multimedia data stream based on the time stamps of the time-stamped AV stream and the time-stamped multimedia data stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A content generating method for generating a time-stamped AV stream from an AV stream which is a packet stream of packetized video and/or audio data, the content generating method comprising the steps of:
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(a) packetizing at least one multimedia data file; (b) generating a time stamp indicating the presentation timing of each packet which has been packetized in step (a) based on the multimedia data file transmission time, data transmission bit rate, and the AV stream time stamp and/or based on the multimedia data file transmission clock and AV stream time stamp; generating a time-stamped multimedia data stream sharing time base of the time-stamped AV stream by providing a time stamp generated in step (b) for each packet corresponding to the time stamp; and generating a time-stamped content stream by combining the time-stamped AV stream and the time-stamped multimedia data stream based on the time stamps of the time-stamped AV stream and the time-stamped multimedia data stream.
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Specification