Sony Corporation

Fumiyoshi Abe

Takuji Himeno

Toshinori Kouzai

Yoichiro Tauchi

Tsukasa Hashino

Hidehiko Teshirogi

Toshitaka Yoshihiro

Tomoo Hayakawa

Yasutaka Kotani

Akira Hasegawa

Yonetaro Totsuka

Kenji Yamasaki

Takuro Enomoto

Munehiro Shimomura

Toshinori Kozai

Yasuhiro Goto

Shinya Morita

Hajime Takeuchi

Hiroki Matsui

Yasuhiro Hashimoto

Teruyuki Yoshida

Seiichi Sakai

Yasuo Nagai

Shosuke Tanaka

Takayuki Horikoshi

Takayuki Okafuji

Takaya Yamamura

Tomoyuki Miyakoshi

Keita Nakamatsu

Hiroyasu Tsuchida

Shimya Morita

Masaaki Yamanaka

An information processing apparatus includes an image input section configured to input an edit target image, an edit target image attribute input section configured to input attribute information of the edit target image, a display control section configured to display the edit target image displayed on a display screen, a user instruction input section configured to input an instruction from a user, a correction parameter acquisition section configured to acquire a correction parameter, an image editing section configured to edit the edit target image displayed on a display screen, an edited image attribute acquisition section configured to acquire attribute information, an edit information generation section configured to generate edit information, and an edit information storage section configured to store the edit information.

Information processing apparatus, information processing method, and computer program

The present invention provides an image data processing method of recording image data coded with the MPEG (Moving Picture Experts Group) technique to a recording medium. For transition of the bit occupancy in a VBV buffer to a target value, the initial value of a bit occupancy in a VBV buffer is calculated on the basis of auxiliary data read from a recording medium, a comparison is made between the target and initial values of the bit occupancy, and the number of bits for assignment to each GOP of to-be-coded image data correspondingly to the result of comparison.

Image data processing device and method

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

The invention relates to a magnetic tape recording apparatus which can record digital image data sufficient to allow a good image to be displayed upon variable speed reproduction in the long time mode. When image data for variable speed reproduction (for example, sixteenfold speed reproduction) is recorded discretely at positions which are traced by a rotary head upon variable speed reproduction, in the long time mode, the number of recording times of image data for same variable speed reproduction is increased and the number of sync blocks recorded in one recording operation is decreased when compared with those in recording in the standard mode. For example, in the standard mode, six sync blocks are recorded three times, but in the long time mode, four sync blocks are recorded four times. The present invention can be applied to a recording and reproduction apparatus which displays a good image upon variable speed reproduction.

Magnetic tape recording apparatus

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

When the head of a data pack that can be a start point of consecutive recording is included in an ECC (error correcting code) bank, data indicating this is set in an ECCTB (error correctly code two-B picture). When the head of a data pack that can be a start point of consecutive recording is not included in the ECC bank, data indicating this is set in the ECCTB. Thus, when performing consecutive recording, a recording apparatus refers to contents of the ECCTBs to detect a consecutive recording start, thereby allowing selection of the point closest to a point where a user desires to start consecutive recording, and the user starts the consecutive recording at the detected point.

Recording apparatus and method, recording medium, and program

In a picture data reproducing method of reproducing picture data recorded to a recording medium according the MPEG standard, there is provisionally stored, into a stream buffer, picture data grouped as a GOP which begins with an I picture, the picture data provisionally stored in the stream buffer is read sequentially starting with a previous picture and the read picture data is decoded in the course of a FORWARD reproduction being done, and picture data acquired from the recording medium is additionally supplied to the stream buffer. When the picture data provisionally stored in the stream buffer have been read in the decoding step to before last N frames, a predetermined amount of picture data is additionally supplied, in the data adding step, beginning at the head of a GOP including picture data in the remaining N-th frame in the stream buffer. Thus, a smooth variable-speed reproduction can be done according to the MPEG Standard.

Picture data reproducing apparatus and method

Pictures in number indicated by a value (3 in one example) of M in a GOP structure are set as one unit. AUX data (denoted by U in FIG.) related to those pictures, audio data (denoted by A in FIG.) corresponding to those pictures, and AUX data (denoted by X in FIG.) related to the audio data are arranged together at the head of 16 tracks that undergo interleaving. Subsequent to those data, one unit of pictures (3 pictures in one example) is arranged. An HD video signal and an HD audio signal can be recorded and played back with certainty.

Magnetic tape recording apparatus and method, magnetic tape playback apparatus and method, format for magnetic tape, and storage medium product

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.

Magnetic tape recording apparatus and method, magnetic tape format, and recording medium therefor

In an STC generating step, STCs (STC_d) delayed a time 'System_delay' from STC (STC_medium) in compressed picture data read from a recording medium in the normal-speed reproduction mode is sequentially generated. In this STC generating step, there is set at shift from a variable-speed reproduction to normal-speed reproduction an STC initial value on the basis of results of comparison between PTS (PTS_s) in display picture data at the time of reproduction mode shift and {STC_medium at the shift&#x2212;(delay due to the shift (shift_delay)+System_delay)}. Thus, when shifting the reproduction mode from a variable-speed one to normal-sped one in compliance with the MPEG standard, pictures can smoothly be displayed in the normal-speed reproduction mode without skipping over any displayed pictures.

A magnetic-tape recording apparatus records digital data on a magnetic tape by a rotating head. It includes a first obtaining device for obtaining predetermined-unit video data; a second obtaining device for obtaining audio data corresponding to the predetermined-unit video data; a synthesizing device for synthesizing the predetermined-unit video data and the audio data corresponding to the predetermined-unit video data such that they are continuous on a track in the magnetic tape without any space disposed therebetween; and a sending device for sending data synthesized by the synthesizing device to the rotating head in order to record the data on the magnetic tape.

Growing community of inventors

Kanagawa, Japan

Fumiyoshi Abe