| Patent Number |
Title Of Patent |
Date Issued |
| 7415650 |
Information recording/reproducing apparatus, and information recording medium |
August 19, 2008 |
| 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 info |
| 7404135 |
Information recording/reproducing apparatus, and information recording medium |
July 22, 2008 |
| 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 info |
| 7313069 |
Optical recording medium and recording apparatus, the medium including a linking region between |
December 25, 2007 |
| 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 id |
| 7301876 |
Multi-layered disc and multi-layered disc reproducing apparatus |
November 27, 2007 |
| A multi-layered disc (D1, D2, D3) 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 (2, 4) for recording information data and a control data recording |
| 7301860 |
Recording disc and apparatus and method for reproducing recorded information |
November 27, 2007 |
| 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 |
| 7292509 |
Recording disc and apparatus and method for reproducing recorded information |
November 6, 2007 |
| 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 |
| 7283456 |
Reproduction-only recording medium |
October 16, 2007 |
| 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 dat |
| 7266753 |
Information recording/reproducing apparatus, and information recording medium |
September 4, 2007 |
| 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 info |
| 7082082 |
Apparatus for recording and playing back information from an optical disk having PEP and BCA blo |
July 25, 2006 |
| An optical disk, a recording apparatus and playing apparatus which can record various kinds of identification information in the form of a pit train and a bar code without decreasing the data recording area for main information. Both a first data block including a pit train indicating |
| 6980494 |
Optical disc recording method and apparatus, optical disc, and optical disc reproducing apparatu |
December 27, 2005 |
| An optical disc recording method, an optical disc recording apparatus, and an optical disc in which performances of the optical disc is maintained over a long period of time without generating abrupt changes in wobbling curve of grooves of the optical disc. A phase modulation signal S4 i |
| 6977880 |
Multi-layered disc and multi-layered disc reproducing apparatus |
December 20, 2005 |
| A multi-layered disc (D1, D2, D3) 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 (2, 4) for recording information data and a control data recording are |
| 6965551 |
Recording disk and recording apparatus having a copy prevention feature |
November 15, 2005 |
| A recording disk and a recording apparatus prevent illegal copying. In a reproduction control data area, pits of a pit train on a plurality of adjacent tracks are aligned in the directions which cross the tracks perpendicularly, wherein the pit train represents reproduction control d |
| 6335070 |
Record medium, record medium manufacturing apparatus and information recording/reproducing appar |
January 1, 2002 |
| A record medium (1) is provided with: a main body; a groove track (1G) formed on the main body, as one track for recording information onto which a light beam for recording and/or reproducing the information is irradiated; and a land track (1L) formed on the main body, which is adjac |
| 6058087 |
Information recording apparatus, information recording medium and information reproducing appara |
May 2, 2000 |
| An information recording apparatus 100, wherein record data whose length is 8 bits is modulated to code data whose length is 16 bits by using 8/16 modulation-demodulation method, and a data-sector including a plurality of the code data is recorded onto a DVD-RAM 1. In case that the last |
| 5835467 |
Apparatus for reproducing recorded information |
November 10, 1998 |
| A recorded information reproducing apparatus which can remove a crosstalk of a read signal read from a recording medium which was high density recorded without decreasing a recording capacity of a recording medium. The apparatus obtains a first read sample value series by reading and |
| 5796711 |
Optical disc having plural zones of recording tracks |
August 18, 1998 |
| An optical disc of a sampled servo tracking method excludes unnecessary interference to wobbled pits of the servo area, whereby a tracking servo can be stably performed, a high density maintained, and a large recording capacity obtained. An optical disc in which a circular recording area |
| 5768243 |
Optical recording medium and its recording apparatus and reproducing apparatus |
June 16, 1998 |
| An optical recording medium which is constructed in a manner such that a plurality of recording areas in which an information signal is recorded along vortical spiral tracks are arranged in a ring shape on a recording surface and a vortex direction of the spiral track of the outside |
| 5723193 |
Information recording disk and recorded information reproducing apparatus |
March 3, 1998 |
| An object of this invention is to provide an information recording disk which allows a higher information recording density as compared with that of a conventional disk and a recorded information reproducing apparatus for reproducing information recorded therein. On the information recor |
| 5656348 |
Optical recording medium and its recording apparatus and reproducing apparatus |
August 12, 1997 |
| An optical recording medium which is constructed in a manner such that a plurality of recording areas in which an information signal is recorded along vortical spiral tracks are arranged in a ring shape on a recording surface and a vortex direction of the spiral track of the outside |
| 5600626 |
Optical disk of sampled servo type having synchronization a marks for simple synchronization det |
February 4, 1997 |
| An optical disk with tracks having a sampled servo type recording format, and comprising a preformatted servo field including a synchronous mark for synchronization detection and a data field for recording data on each track. In the optical disk, the synchronous marks are aligned in the |
| 5495460 |
Optical disk and apparatus for reproducing signal without crosstalk |
February 27, 1996 |
| An optical disc includes a signal recording track spirally formed on the surface of the optical disc, information pits formed on the signal recording track, and a plurality of non-signal regions periodically formed on the signal recording track, wherein no information pit is formed on th |
| 5446717 |
Optical disc and recording and reproducing method for an optical disc with a high density |
August 29, 1995 |
| A recording signal y(n,t) is recorded on a track T.sub.n of an optical disc in accordance with a following equation,where y(n-1,t) is a previous signal recorded on an adjacent track T.sub.n-1, x(n,t) is an original signal for a track T.sub.n, t is time, and + is a symbol expressing the e |
| 5280466 |
Optical disc and apparatus for reproducing signals recorded on the same |
January 18, 1994 |
| An optical disc is provided with: a signal track formed on a signal recording surface of the optical disc; and a plurality of cross-talk detection areas each formed on a portion of the signal track and including pits for detecting a cross-talk. The signals are recorded on areas of the |
