Compressed stream decoding apparatus and method
First Claim
1. A compressed stream decoding apparatus, comprising:
- a first video data processor decoding an input first compressed video stream based on first reference time information added to the first compressed video stream, and outputting decoded video data based on the first reference time information; and
a second video data processor performing alternatively a first processing and a second processing, wherein the first processing is decoding an input second compressed video stream based on second reference time information added to the second compressed video stream and outputting decoded video data based on the second reference time information; and
the second processing is outputting the decoded video data decoded by the first video data processor based on the first reference time information.
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Abstract
A compressed stream decoding apparatus to preventing a disturbance of a display image is disclosed. The compressed stream decoding apparatus includes: a first video data processor decoding an input first compressed video stream based on first reference time information added to the first compressed video stream, and outputting decoded video data based on the first reference time information; and a second video data processor performing alternatively a first processing and a second processing, wherein the first processing is decoding an input second compressed video stream based on second reference time information added to the second compressed video stream and outputting decoded video data based on the second reference time information; and the second processing is outputting the decoded video data decoded by the first video data processor based on the first reference time information.
38 Citations
23 Claims
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1. A compressed stream decoding apparatus, comprising:
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a first video data processor decoding an input first compressed video stream based on first reference time information added to the first compressed video stream, and outputting decoded video data based on the first reference time information; and
a second video data processor performing alternatively a first processing and a second processing, wherein the first processing is decoding an input second compressed video stream based on second reference time information added to the second compressed video stream and outputting decoded video data based on the second reference time information; and
the second processing is outputting the decoded video data decoded by the first video data processor based on the first reference time information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A compressed stream decoding apparatus for decoding an input first compressed video stream and an input second compressed video stream in a time-division manner to output decoded video data, the apparatus adjusting, if the first compressed video stream and the second compressed video stream have different frame frequencies, a decoding start time such that a decoding start time of a picture in one of the compressed video streams with a lower frame frequency is delayed until completion of decoding of a picture in the other video stream with a higher frame frequency.
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16. A compressed stream decoding apparatus, comprising:
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a decoder receiving a first compressed video stream and a second compressed video stream to decode the first compressed video stream and the second compressed video stream in a time-division manner, and outputting decoded video data;
a first output buffer storing video data decoded with the first compressed video stream output from the decoder;
a first display output unit outputting the video data stored in the first output buffer in sync with a display synchronized signal generated based on reference time information added to the first compressed video stream;
a second output buffer storing video data obtained by decoding the second compressed video stream output from the decoder; and
a second display output unit selecting one of the video data stored in the first output buffer and the video data stored in the second output buffer to output the selected video data, the second display output unit outputting the video data stored in the first output buffer in sync with the display synchronized signal generated using the first reference time information, and outputting the video data stored in the second output buffer in sync with the display synchronized signal generated using the second reference time information. - View Dependent Claims (17)
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18. A compressed stream decoding method, comprising:
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decoding an input first compressed video stream based on first reference time information added to the first compressed video stream, and storing decoded video data in a first output buffer;
outputting the video data stored in the first output buffer in sync with a display synchronized signal generated using the first reference time information;
decoding an input second compressed video stream based on second reference time information added to the second compressed video stream to store decoded video data in a second output buffer; and
selecting one of the video data stored in the first output buffer and the video data stored in the second output buffer to output the selected video data from the second display output unit, the second display output unit outputting the video data stored in the first output buffer in sync with the display synchronized signal generated using the first reference time information, and outputting the video data stored in the second output buffer in sync with the display synchronized signal generated using the second reference time information. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification