Video tape recorder and recording method
AssigneeSony Corporation
InventorsFumiyoshi Abe, Takuji Himeno, Toshinori Kouzai, Yonetaro Totsuka
Life of this patent
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Abstract
A video tape recorder for recording high definition television video signals onto a magnetic tape, and recording at least reproduction standard management information in the order of pictures of video data in a main sector, and in the order of pictures of compressed video data in a subcode sector. Search data is recorded on the basis of time management information of video data at the time of decoding, while display data is recorded on the basis of time management information on reproduction and output of video data.
Claims6
A video tape recorder that sequentially forms recording tracks aslant on a magnetic tape and records video data, audio data, and auxiliary data related to the video data and the audio data onto the magnetic tape, comprising:
- data compressing means for compressing the video data and the audio data to generate compressed video data and compressed audio data;
- pack unit generating means for generating a pack unit by forming compressed video data into a block for each predetermined number of pictures and combining the compressed video data of the block, the compressed audio data corresponding thereto, and the auxiliary data corresponding thereto;
- and
- a recording system that allocates data of the pack unit to a main sector and allocates the auxiliary data of the pack unit to a subcode sector to sequentially form recording tracks based on the main sector and the subcode sector,
- wherein the auxiliary data of the main sector includes at least reproduction standard management information, which corresponds to time management information of the video data in a decoding mode and which is disposed in the order of pictures of the video data, and the auxiliary data of the subcode sector includes at least the reproduction standard management information and picture type information that are disposed in the order of pictures of the compressed video data, and
- wherein the auxiliary data of the main sector includes, in addition to the reproduction standard management information, time information of the video data and/or the audio data, which is disposed in the order of pictures of the video data, and the auxiliary data of the subcode sector includes time information of the video data and/or the audio data, which is disposed in the order corresponding to the auxiliary data of the main sector.
A recording method for sequentially forming recording tracks aslant on a magnetic tape and recording video data, audio data, and auxiliary data related to the video data and the audio data onto the magnetic tape, comprising:
- a data compressing step for compressing the video data and the audio data to generate compressed video data and compressed audio data;
- a pack unit generating step for generating a pack unit by forming compressed video data into a block for each predetermined number of pictures and combining the compressed video data of the block, the compressed audio data corresponding thereto, and the auxiliary data corresponding thereto;
- and
- a recording step for allocating data of the pack unit to a main sector and allocating the auxiliary data of the pack unit to a subcode sector to sequentially form recording tracks based on the main sector and the subcode sector,
- wherein the auxiliary data of the main sector includes at least reproduction standard management information, which corresponds to time management information of the video data in a decoding mode and which is disposed in the order of pictures of the video data, and the auxiliary data of the subcode sector includes at least the reproduction standard management information and picture type information that are disposed in the order of pictures of the compressed video data, and
- wherein the auxiliary data of the main sector includes, in addition to the reproduction standard management information, time information of the video data and/or the audio data, which is disposed in the order of pictures of the video data, and the auxiliary data of the subcode sector includes time information of the video data and/or the audio data, which is disposed in the order corresponding to the auxiliary data of the main sector.
Dependencies are inferred from the claim text.