Receiving method, transmission method, receiving device, and transmitting device

Abstract

To provide a reception method or the like capable of reproducing a plurality of second data units at an intended time.SOLUTION: Presentation time information showing a presentation time of a prescribed data unit is generated on the basis of reference time information, (i) the prescribed data unit, (ii) first control information storing the generated presentation time information, and (iii) second control information storing identification information showing whether to be generated on the basis of the reference time information before the presentation time information undergoes leap second adjustment is transmitted, the identification information shows whether the presentation time information is generated on the basis of the reference time information from a time before a predetermined period right before a time when the leap second adjustment is performed to the time right before, a presentation time of the prescribed data unit is generated by subtracting the predetermined time from the reference time information in generation, and the first control information is a MPU time stamp descriptor.SELECTED DRAWING: Figure 103

Claims

1. A transmission method for storing data constituting an encoded stream in a predetermined data unit and transmitting it, Based on the reference time information, presentation time information indicating the presentation time of the predetermined data unit is generated. (i) the predetermined data unit, (ii) first control information storing the generated presentation time information, and (iii) second control information storing identification information indicating whether or not the presentation time information was generated based on the reference time information before leap second adjustment, The identification information indicates whether the presented time information was generated based on the reference time information from a predetermined period before the time immediately preceding the leap second adjustment to the time immediately preceding the leap second adjustment. In the above generation, the presentation time of the predetermined data unit is generated by subtracting a predetermined time from the reference time information. The first control information is an MPU timestamp descriptor. Sending method.

2. A receiving method for receiving a predetermined data unit in which data constituting an encoded stream is stored, (i) receiving the predetermined data unit, (ii) first control information storing presentation time information indicating the presentation time of the predetermined data unit, and (iii) second control information storing identification information indicating whether or not the presentation time information was generated based on reference time information before leap second adjustment, Based on the received first control information and second control information, the received predetermined data unit is regenerated. The identification information indicates whether the presented time information was generated based on the reference time information from a predetermined period before the time immediately preceding the leap second adjustment to the time immediately preceding the leap second adjustment. The presentation time of the predetermined data unit is a time generated by subtracting a predetermined time from the reference time information. The first control information is an MPU timestamp descriptor. Reception method.

3. A transmitting device that stores data constituting an encoded stream in a predetermined data unit and transmits it, A generation unit that generates presentation time information indicating the presentation time of the predetermined data unit based on reference time information, (i) The predetermined data unit, (ii) First control information storing the presentation time information generated by the generation unit, and (iii) Second control information storing identification information indicating whether or not the presentation time information was generated based on the reference time information before leap second adjustment, are provided, The identification information indicates whether the presented time information was generated based on the reference time information from a predetermined period before the time immediately preceding the leap second adjustment to the time immediately preceding the leap second adjustment. The generation unit generates the presentation time of the predetermined data unit by subtracting a predetermined time from the reference time information. The first control information is an MPU timestamp descriptor. Transmitter.

4. A receiving device that receives a predetermined data unit containing data constituting an encoded stream, (i) a predetermined data unit, (ii) first control information storing presentation time information indicating the presentation time of the predetermined data unit, and (iii) second control information storing identification information indicating whether or not the presentation time information was generated based on reference time information before leap second adjustment, The system includes a playback unit that plays back the predetermined data unit received by the receiving unit based on the first control information and the second control information received by the receiving unit, The identification information indicates whether the presented time information was generated based on the reference time information from a predetermined period before the time immediately preceding the leap second adjustment to the time immediately preceding the leap second adjustment. The presentation time of the predetermined data unit is a time generated by subtracting a predetermined time from the reference time information. The first control information is an MPU timestamp descriptor. Receiving device.

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