Multiplexer, receiver, and multiplex transmission method
First Claim
1. A multiplexing apparatus for multiplexing a plurality of data streams and outputting multiplexed data, comprising:
- a plurality of multiplexer memories for temporarily retaining the data streams correspondingly, and time-domain-compressing the retained data streams to output time-domain-compressed data;
means for time-division-multiplexing the time-domain-compressed data sent from the multiplexer memories to generate the multiplexed data;
means for generating temporal information indicative of timing for suppling the data streams constituting the multiplexed data to decoding means; and
means for adding the temporal information to the multiplexed data.
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Abstract
The present invention relates to a multiplexing apparatus, a receiving apparatus, and a method of multiplex transmission. Specifically, a multiplexing apparatus which multiplexes a plurality of encoded data streams adds arrival time T1 as temporal information indicative of timing for suppling the encoded data streams to a plurality of decoding units of a receiver to a time-division-multiplexed data stream. The receiver decodes the encoded data streams on the basis of the arrival time T1. So, even though the transmission bands allocated to the respective data streams are varied, synchronization between original data streams and decoded data streams is secured without deleting part of information of the original data streams.
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Citations
15 Claims
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1. A multiplexing apparatus for multiplexing a plurality of data streams and outputting multiplexed data, comprising:
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a plurality of multiplexer memories for temporarily retaining the data streams correspondingly, and time-domain-compressing the retained data streams to output time-domain-compressed data;
means for time-division-multiplexing the time-domain-compressed data sent from the multiplexer memories to generate the multiplexed data;
means for generating temporal information indicative of timing for suppling the data streams constituting the multiplexed data to decoding means; and
means for adding the temporal information to the multiplexed data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A receiving apparatus for receiving multiplexed data generated by time-division-multiplexing a plurality of data streams and decoding the data streams, comprising:
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memories for receiving the multiplexed data and selectively outputting data constituting the desired data streams;
means for decoding the output data sent from the memories and outputting the desired decoded data streams; and
means for controlling the memories to control timing for suppling the output data from the memories to the decoding means on the basis of temporal information added to the multiplexed data. - View Dependent Claims (10, 11, 12, 13)
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14. A method of multiplex transmission for multiplexing a plurality of data streams and transmitting multiplexed data, wherein
a transmission unit adds temporal information indicative of timing for suppling the desired data streams constituting the multiplexed data to decoding means to the multiplexed data, and transmits the multiplexed data, and a reception unit decodes the desired data streams generated from the transmitted multiplexed data on the basis of the temporal information.
Specification