Kabushiki Kaisha Toshiba

Sumitaka Maruyama

Hideo Ando

Akihito Ogawa

Yutaka Kashihara

Kazuo Watabe

Katsuo Iwata

Maho Kuwahara

Yuji Nagai

Shintaro Takehara

Satoru Kishita

Chosaku Noda

Kazuto Kuroda

Masahiko Tanaka

Hideaki Ohsawa

Nobuaki Kaji

According to one embodiment, an information storage medium in which layer 0 and layer 1 are arranged from a read surface, a system lead-in area, data lead-in area, data area, and middle area are arranged from an inner circumference of the layer 0, and a system lead-out area, data lead-out area, data area, and middle area are arranged from an inner circumference of the layer 1. A guard track zone is arranged on a side of the data area in the data lead-out area, and a reference code zone, R physical format information zone, recording management zone, and drive test zone are arranged in the data lead-in area of the layer 0 and padding of the guard track zone of the data lead-out area is performed after padding of the drive test zone of data lead-in area and recording of the recording management zone.

Information storage medium, recording method, and recording apparatus

According to one embodiment, an information storage medium in which layerand layerare arranged from a read surface, a system lead-in area, data lead-in area, data area, and middle area are arranged from an inner circumference of the layer, and a system lead-out area, data lead-out area, data area, and middle area are arranged from an inner circumference of the layer. A guard track zone is arranged on a side of the data area in the data lead-out area, and a reference code zone, R physical format information zone, recording management zone, and drive test zone are arranged in the data lead-in area of the layerand padding of the guard track zone of the data lead-out area is performed after padding of the drive test zone of data lead-in area and recording of the recording management zone.

According to one embodiment, an optical pickup unit which can record, reproduction and erase information in/from an information recording medium has tracks with different pitches, the dividing means has at least a part of a dividing boundary line placing between an end of a 1st order diffraction light with the largest diffraction angle and an end of a 1st order diffraction light with the smallest diffraction angle of the reflected laser beam.

Optical pickup unit and information recording/reproduction apparatus

An information layercomprises a system lead-in area, data lead-in area, data area, and middle area, an information layercomprises a system lead-out area, data lead-out area, data area, and middle area, an end position of the data area of layeris positioned outer than a start position of the data area of layer, the data lead-in area comprises a guard track zone wider than a test zone in the data lead-out area, the data lead-out area comprises a guard track zone wider than a test zone and a management zone in the data lead-in area, the middle area of layercomprises a guard track zone wider than a test zone in the middle area of layer, and the middle area of layercomprises a blank zone wider than a test zone in the middle area of layer

Information storage medium, recording method, reproducing method, and reproducing apparatus

According to one embodiment, a storage medium includes a burst cutting area at an inner periphery, wherein the burst cutting area has includes plural burst-cutting-area data areas.

Information storage medium including a system lead-in area, a connection area, a data lead-in area and a data area

Storage medium including a burst cutting area (BCA)

Storage medium, reproducing method, and recording method

Recording timing of a Data segment is set so as to avoid locating a wobble modulated portion as preformat information which indicates information on Physical segments of a recording type optical disc, and a recording start head position of the Data segment to be recorded in a track, in the same area of the track.

Growing community of inventors

Yokohama, Japan

Sumitaka Maruyama