Sony Corporation

Toshinori Kouzai

Fumiyoshi Abe

Takuji Himeno

Tsukasa Hashino

Yoichiro Tauchi

Hidehiko Teshirogi

Yonetaro Totsuka

Tomoo Hayakawa

Kenji Nikata

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.

Video tape recorder and recording method

A recording apparatus of the present invention comprises a compressed data processing unit for performing compression processing of second definition data to generate compressed data, a system data generating unit for generating system data including at least time code, an extended track number generating unit for generating extended track number on the basis of inputted second definition data, a memory unit for storing compressed data and system data, a read-out unit for reading out compressed data and system data which are stored in the memory unit, a control unit for controlling the read-out unit so as to read out, at a predetermined timing, the compressed data and the system data which are stored in the memory unit on the basis of the extended track number, and a recording unit for recording, into second sector, compressed data which has been read out from the read-out unit, and for recording, into third sector, along with extended track number, system data which has been read out by the read-out unit.

Recording apparatus and method

The present invention is particularly applied to a video tape recorder for recording a video signal of an HDTV (high-definition television) on a magnetic tape. In the video tape recorder, the recording position of the head of each pack unit is set so as to have a predetermined relationship with the recording position determined by the corresponding time management information.

Audio signals and video signals are recorded as follows. Three video PES packets, each being formed of one video frame, are combined to form a video editing unit. Then, the video editing unit and the associated audio editing unit are alternately disposed on a magnetic tape. The recorded PES packets are output as a TS as follows. A STC is initialized, and then, PSI packets of a PAT and a PMT are output. TS packets specially used for a PCR for storing the STC are then output at certain intervals. Subsequently, video PES packets are converted into TSs, and the output of the video TSs is started while synchronizing a time obtained by subtracting vbv_delay from the first I-picture DTS with the STC. Audio PES packets are converted into TSs, and the output of the audio TSs is started while synchronizing a time obtained by subtracting the start up delay from the first frame with the STC. Data streams are recorded in the following manner. The three MSBs of a sync block (SB) header indicate the type of data to be recorded in the following data area. If the data type is PES-VIDEO or PES-AUDIO, a full/partial flag is recorded in the fourth MSB of the SB header. In the subsequent four LSBs, the continuity count value representing the continuity of the same type of SBs is recorded.

Recording apparatus and method, playback apparatus and method, and recording medium therefor

139 sync blocks, each having 111 bytes, are disposed on each track of a magnetic tape. Among the 139 sync blocks, 121 sync blocks each consist of a two-byte detection pattern for detecting the sync block, three-byte identification information for identifying the sync block, 96-byte main data, and 10-byte inner error correcting code added to the identification information and the main data. In the remaining 18 sync blocks, instead of the main data, 96-byte outer error correcting code is included. The outer error correcting code is provided for each group of the 139 sync blocks. Such a group of 139 sync blocks is obtained by dividing 2224 sync blocks contained in sixteen tracks by sixteen planes, 1668 sync blocks contained in twelve tracks by twelve planes, or 1112 sync blocks contained in eight tracks by eight planes. The sync blocks are arranged on the magnetic tape so that the distance between the sync blocks belonging to the identical plane is constant among the planes.

Growing community of inventors

Kanagawa, Japan

Toshinori Kouzai