Kabushiki Kaisha Toshiba

Seigo Ito

Hiroaki Unno

Hideo Ando

Hideki Takahashi

Hideki Sogabe

Hisashi Yamada

Yasuhiro Ishibashi

Fumitaka Sato

Masao Kubo

Koji Maruyama

Hiromichi Kobori

Hideyuki Toma

Hiroharu Satoh

Naobumi Seo

Masataka Moteki

Masateru Saigusa

Yukiyoshi Fujishiro

Ryujiro Bando

Masashi Horiguchi

According to one embodiment, an information recording apparatus for recording, in a free area, first low-quality recorded data having an error rate not less than a first error rate upon finalization of a recording medium, the information recording apparatus includes a reader, a measurement module, a detector, and a recorder. The reader is configured to read recorded data from a recording area of the recording medium. The measurement module is configured to measure an error rate of the recorded data of each predetermined data block. The detector configured to detect the first low-quality recorded data based on an error rate measurement result of the measurement module. The recorder is configured to correct an error in the first low-quality recorded data, and record error-corrected recorded data corresponding to the first low-quality recorded data at a spare recording position of the free area of the recording medium.

Information recording apparatus and information recording method

A picture recording apparatus which can record a picture on a write-once medium having an element which specifies a first size on a recording area assigned to data saving in edit processing, and an element which subtracts the first size from a remaining amount of recording area in the write-once medium to calculate a second size secured for recording, characterized in that a recording size is managed using the second size as an upper limit of a recordable size, and that an editing area is secured using the first size as a lower limit.

Picture recording apparatus

According to one embodiment, there is provided an optical disk apparatus including a recording unit which irradiates an optical disk with a laser beam to record information in a first format and a second format, a generation unit which generates warning information to an optical disk apparatus capable of performing a read process in the second format while being not capable of performing the read process in the first format, the warning information warning that information is recorded in the first format in the optical disk, and a control unit which controls the recording unit to record the warning information in the second format in the optical disk apparatus when the information is recorded in the first format in the optical disk.

Optical disk apparatus and optical disk recording method with format warning information

An apparatus is provided in which a recording area is effectively utilized even when information-deleted portions and/or information-moved portions are provided on an information recording medium. The apparatus includes a space extent management section which recognizes and manages space extents, an optimization processing section which creates a coupled extent by coupling a information-deleted portion and a space extent in a condition that the above extents are adjacent to each other and optimizes the coupled extent as one space extent to be used for recording, and an extent arrangement processing section which arranges and manages the space extents according to a preset rule.

Information recording/playback method and recording/playback apparatus

To reduce influence of errors on the outer periphery side of a multi-layer recording disc, a first shifted middle area is assured at a predetermined position nearer to the inner periphery side than the last position of layer on the outer periphery side of a single-sided, multi-layer recording disc, and a second shifted middle area is assured at the position of layer that opposes the shifted middle area assured on layer. A recording layer extending from layer to layer may be shifted in the first and second shifted middle areas, and an area in which errors relatively readily occur on the outer periphery side of the first and second shifted middle areas may not be used.

Method of determining recording area of multi-layer optical disc, and recording and playback apparatus

An information recording and reproduction apparatus comprising a recording and reproduction section configured to record and reproduce information in and from one recording medium of a first group and at least one recording medium of a second group, which has a smaller recording capacity than the one recording medium of the first group, and a registering section configured to reserve, in the one recording medium of the first group, a recording region which corresponds to the recording capacity of the at least one recording medium of the second group.

Information recording and reproduction apparatus, information recording and reproduction method, and broadcast receiving apparatus

This invention relates to a recording/reproduction system having a function of recording/reproducing video information with a GOP structure in the MPEG2 scheme on/from a disk. In this system, when a cut position designated by the user on the reproduction frame is set within the GOP, start picture data in the latter half of video data using the cut position as the reference position is set to I picture data. That is, when the picture data is of the B type, the CPU controls an encoder/decoder to change the picture data to I picture data. Accordingly, the latter half can be generated as reproducible video data.

System and method for editing video information

According to this invention, general addresses are given to a multi-layer information storage medium to facilitate handing of information. That is, it is possible to set generalized addresses for multiple information layers, and information indicating a condition for setting the general addresses, e.g., the contents of a disk ID zone in a rewritable zone of a lead-in area, is recorded on an information reproducing layer.

Multi-body multi-purpose information processing apparatus

An information storage medium is designed to assure stable continuous recording without adverse effect, even when many defective areas are present on the information storage medium. To record information onto the information storage medium, a file unit is defined as a first unit. A contiguous data area unit to be treated as a continuous recording area is defined as a second unit. Furthermore, recording is done in the contiguous data area units and a collection of the contiguous data area units is organized into the file unit. In addition, an information recording place is provided in such a manner that the contiguous data area unit is so set that it extends over the recording area of another file already recorded on the information storage medium and a defective area on the information storage medium.

Information recording device and a method of recording information by setting the recording area based on contiguous data area

Information recording method, information recording device, and information storage medium

Information recording method apparatus and storage medium for recording information length as part of file entry information

Information recording method apparatus and storage medium for recording information length and file type as part of file entry information

Information recording device and a method of recording information based on a relationship between an application layer, file system layer, and an optical disk drive layer

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Hanno, Japan

Seigo Ito