Picture recorder/reproducer and method thereof
View Patent ↗According to the invention, as received stream data is analyzed a sequence header is retrieved and stream data after the detected sequence header is written to storage unit when a recording initiation command is received, a recorded file is generated with a sequence header having image format information required to reproduce stream data immediately after the recording initiation command at the head. As when a reproducing command is received, stream data after the sequence header is read from the storage unit and an image and voice are reproduced, the recorded stream data can immediately normally reproduced without delay and therefore, data acquired by recording stream data used for digital broadcasting and others can be smoothly reproduced.
1. A recorder/reproducer for receiving stream data and recording it in storage means and for reading the recorded stream data and reproducing it, wherein:
when a recording initiation command is received, received stream data is analyzed, a sequence header immediately after the recording initiation command is retrieved, stream data after the detected sequence header is written to said storage means; and
when a reproducing command is received, the stream data after said sequence header is read from said storage means and an image and voice are reproduced.
2. A recorder/reproducer for receiving stream data and recording it in storage means and for reading the recorded stream data and reproducing it, wherein:
when receiving stream data is stored in an FIFO memory and a recording initiation command is received, a sequence header immediately before said recording initiation command in stream data in said FIFO memory is retrieved and stream data after the detected sequence header is written to said storage means; and
when a reproducing command is received, stream data after said sequence header is read from said storage means and an image and voice are reproduced.
3. A recorder/reproducer according to claim 2 , wherein:
said FIFO memory has capacity for storing stream data having data length equal to an interval between sequence headers.
4. A recorder/reproducer according to claim 2 , wherein:
said FIFO memory has capacity for storing stream data having data length equal to or longer than an interval between sequence headers; and
when a recording initiation command is received, a sequence header immediately before said recording initiation command in stream data in said FIFO memory is retrieved.
5. A recorder/reproducer according to any of claims 2 to 4 , wherein:
positional storage means for storing each position of video data and voice data corresponding to an output image and output voice when a recording initiation command is received is provided; and
when a reproducing command is received, reproducing processing is applied to stream data after said sequence header in said storage means and an image and voice are output from each position of video data and voice data respectively stored in said positional storage means.
6. A recording/reproducing method for receiving stream data and recording it and for reading the recorded stream data and reproducing it, wherein:
when a recording initiation command is received, received stream data is analyzed, a sequence header immediately after the recording command is retrieved and stream data after the detected sequence header is stored; and
when a reproducing command is received, stream data after said stored sequence header is read and an image and voice are reproduced.
7. A recording/reproducing method for receiving stream data and recording it and for reading the recorded stream data and reproducing it, wherein:
when received stream data is stored in an FIFO memory and a recording initiation command is received, a sequence header immediately before said recording initiation command in stream data stored in said FIFO memory is retrieved and stream data after the detected sequence header is stored; and
when a reproducing command is received, stream data after said stored sequence header is read and an image and voice are reproduced.