Abstract: There is provided a system configured to prevent recording contents of various broadcasting schemes from being recorded together on a single recording medium while supporting various broadcasting schemes. An optical disc used here can record a digital stream complying with a predetermined digital broadcasting scheme and including specific information APP_NAME corresponding to a broadcasting scheme to be recorded. The broadcasting scheme to be recorded is checked. If another digital stream has already been recorded on the optical disc, its broadcasting scheme is detected from APP_NAME, and is compared with that of the stream to be recorded. If these broadcasting schemes are different, recording is aborted.

Abstract: A digital stream signal complying with MPEG-TS is handled as stream object ESOB. The ESOB is recorded in unit of stream object unit ESOBU which includes one or more pack/packet groups. Each pack/packet group has a pack/packet group header at its head position, and stores one or more TS packets after the pack/packet group header.

Abstract: An information recording/reproduction apparatus according to one aspect of this invention includes a first recording/reproduction unit configured to execute recording, reproduction, and deletion of information for a built-in first recording medium, a second recording/reproduction unit configured to execute recording and reproduction of information for a detachable second recording medium, a recording control unit configured to control to record a library information file, that contains a plurality of pieces of library information corresponding to a plurality of contents information recorded on the first and second recording media, on the first recording medium, and a deletion control unit configured to execute a process for deleting all pieces of library information contained in the library information file, and a process for deleting all pieces of contents information recorded on the first recording medium.

Abstract: A digital magnetic recording/reproducing apparatus comprising a unit for recording high-definition information including video information and audio information, which is based on a first high-definition television scheme, on a recording medium in accordance with a second high-definition television scheme, the first high-definition television scheme having a first data format of a first amount of information smaller than a second amount of information of a second data format of the second high-definition television scheme, the recording unit including a circuit for allocating a recording area corresponding to a difference between the first amount of information and the second amount of information as a free recording area on which any information is selectively recorded, to match the first amount of information with the second amount of information.

Abstract: A rotary head type magnetic recording/playback apparatus for recording a video signal and an audio signal on multiple helical tracks formed on a magnetic tape and reproducing the video signal and audio signal therefrom. The apparatus includes a recording section for treating the helical tracks as multiple track groups each including N helical tracks, recording only a video signal on (N-K) helical tracks in each track group used as video-only tracks, and recording a video signal and an audio signal in a mixed manner on K helical tracks used as video/audio mixed tracks, and a reproducing section for reproducing the video signal and audio signal from the helical tracks in each of the track groups.