Pioneer Corporation

Pioneer Electronic Corporation

Yoshimi Tomita

Hideki Hayashi

Tetsuya Iida

Hideo Kudo

Fumihiko Yokogawa

Hiroki Kuribayashi

Keiji Katata

Yukiyoshi Haraguchi

An information recording medium () of the present invention has a plurality of recording layers (, and) for recording therein data. Each of the plurality of recording layers corresponds to one of a plurality of recording formats. A first recording layer number (SLN) assigned with each of the recording layers in accordance with a disposed position of each of the recording layer and a second recording layer number (LLN) assigned with corresponding recording format are included in the address area () for the data, with respect to each of the plurality of recording layer.

Information recording medium, information recording apparatus, and information reproducing apparatus

In an information recording, a first data processor divides input data into a plurality of frames so as to arrange the plurality of frames for each unit block. The unit block is a unit of error-correction with respect to the input data and the frames include first identification information, respectively. A second data processor inserts a linking block on a boundary portion between unit blocks in the record data. The unit blocks are adjacent to each other. The linking block includes a second identification information and the second identification information is different from each of the first identification information. A controller controls to record the unit block and the linking block on the information recording medium.

Information recording/reproducing apparatus, and information recording medium

An optical recording medium having a track on which data has been previously recorded, comprising on the track a plurality of data block regions each of which includes main data of a block which is divided into a predetermined number of main data pieces, each of which has data for identifying the main data, and linking regions each of which has pseudo data and is inserted between the data block regions. When the linking regions on said track are adjacent, recording patterns of the pseudo data of the adjacent linking regions are different from each other. Further provided is a recording apparatus forming the data block regions and linking regions on a recording medium.

Optical recording medium and recording apparatus, the medium including a linking region between unit block regions

A multi-layered disc (D, D, D) is provided with a plurality of recording layers laminated with each other in a direction of a normal line of the recording layers, in each of which an information data recording area () for recording information data and a control data recording area () for recording control data to control an operation of recording and/or reproducing the information data are disposed on a same plane, the control data being recorded by a CAV method over a plurality of tracks in the control data recording area. The control data recording area in each of the recording layers is disposed such that the control data recording area () of one of the recording layers is not superimposed with the control data recording area () of another of the recording layers in the direction of the normal line.

Multi-layered disc and multi-layered disc reproducing apparatus

A recording disc and recorded information reproducing apparatus and method for immediately starting reproduction of information when a push-pull based tracking control is employed to reproduce recorded information from the recording disc. The recording disc comprises an information data area for recording recording marks which carry information data in columns, and a control data area for recording identification information indicative of a recording pattern of the recording marks in the information data area.

Recording disc and apparatus and method for reproducing recorded information

In a read-in area on the ROM disc, there are two control-data areas, and the Disc Information recorded in each control-data area comprises a error correction code (ECC (Error Correcting Code) block that has the same contents times, and the control-data area where reproduction-control data is recorded is separated from the other control-data area by a distance greater than the width than the width in the radial direction of the largest black dot.

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Tsurugashima, Japan

Yoshimi Tomita