公开(公告)号：EP1372142A4

公开(公告)日：2006-09-06

申请号：EP02705354

申请日：2002-03-19

申请人： SONY CORP

发明人： KOBAYASHI SHOEI ,  KOBAYASHI NOBUYOSHI ,  YAMAGAMI TAMOTSU ,  IIMURA SHINICHIRO

IPC分类号： G11B20/12 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/26 ,  G11B20/14 ,  G11B20/18 ,  G11B27/19 ,  G11B27/24

CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B7/24082 ,  G11B20/1833 ,  G11B27/19

摘要： In step S1, an address generation block generates and pre-encodes a synchronization signal, address data, and address information composed of an error correction code of the address data which are to be recorded on an optical disc and outputs them to a modulation block. Simultaneously with this, a carrier signal generation block generates a carrier signal for carrying the address information and outputs it to the modulation block. In step 2, the modulation block MSK-modulates the carrier signal input from the carrier signal generation block with the pre-encoded address information input from the address generation block and the obtained MSK-modulated signal is output to a wobble formation block. In step S3, the wobble formation block forms on the optical disc a spiral groove wobbled in accordance with the MSK-modulated signal input from the modulation block. On this optical disc, an arbitrary address can be accessed rapidly.

公开(公告)号：EP1431968A4

公开(公告)日：2009-01-21

申请号：EP03794147

申请日：2003-08-29

申请人： SONY CORP

发明人： IIMURA SHINICHIRO

IPC分类号： G11B7/005 ,  G11B7/09 ,  G11B7/13

CPC分类号： G11B7/133 ,  G11B7/0053 ,  G11B7/0903 ,  G11B7/094

摘要： An optical read device capable of surely and easily reproducing address information recorded as a wobble of guide groove in an optical recording medium. A photodetector (20) for detecting a return light from the optical recording medium has detection areas (21A to D) divided by a plurality of division lines (22, 23, 24). According to the position of the return light spot S on a light reception surface (21) of the photodetector (20), the position of the division line serving as a detection reference is modified and a difference between the light reception signals according to the detection areas divided into two by this division line is calculated to obtain push-pull signals (PP1 to 3), thereby removing the in-phase component.

公开(公告)号：EP0753845A4

公开(公告)日：1998-12-02

申请号：EP96901488

申请日：1996-01-31

申请人： SONY CORP

发明人： OGAWA HIROSHI ,  IIMURA SHINICHIRO

IPC分类号： G11B7/00 ,  G11B7/0037 ,  G11B7/09 ,  G11B19/00 ,  G11B19/02 ,  G11B19/04 ,  G11B19/12 ,  G11B20/10 ,  G11B20/18

CPC分类号： G11B19/04 ,  G11B7/0037 ,  G11B7/0908 ,  G11B7/0909 ,  G11B7/094 ,  G11B7/0945 ,  G11B19/00 ,  G11B19/02 ,  G11B19/12 ,  G11B20/10009 ,  G11B20/18 ,  G11B2007/0006

摘要： An apparatus comprising an optical pickup for reproducing information stored on optical recording media, which automatically set conditions for reproduction of individual recording media loaded into a drive so as to obtain compatibility with different types of media. Even when an optical recording medium for low-density recording is loaded, the recorded information can be reliably reproduced.

公开(公告)号：EP1369851A4

公开(公告)日：2008-03-19

申请号：EP02703936

申请日：2002-03-07

申请人： SONY CORP

发明人： IIMURA SHINICHIRO ,  KOBAYASHI SHOEI

IPC分类号： G11B7/24 ,  G11B20/12 ,  G11B7/005 ,  G11B7/007 ,  G11B7/26 ,  G11B20/10 ,  G11B20/14 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30

CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/24082 ,  G11B7/261 ,  G11B20/1217 ,  G11B20/1403 ,  G11B20/1419 ,  G11B27/3027 ,  G11B2020/1222 ,  G11B2020/1239 ,  G11B2020/1268 ,  G11B2020/1269 ,  G11B2020/1287 ,  G11B2020/1298 ,  G11B2220/215 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2537 ,  G11B2220/2541 ,  G11B2220/2545 ,  G11B2220/2562 ,  G11B2220/2566 ,  G11B2220/257

摘要： An optical disc having a circular track formed as a groove and/or land for recording data and wobbled. The track wobbling is performed on a constant unit of an FSK information bit portion based on a waveform obtained by FSK modulation of an information bit and a single frequency portion based on a waveform of a single frequency, so that the constant units are continuous. For the FSK modulation, two types of frequencies are used. One of the frequencies is a frequency identical to the single frequency and the other is different from the single frequency. The relationship of these frequencies is such that for a predetermined period of time, the wave number of these frequencies are even and odd.

公开(公告)号：EP1530203A4

公开(公告)日：2005-12-21

申请号：EP03784649

申请日：2003-08-12

申请人： SONY CORP

发明人： IIMURA SHINICHIRO

IPC分类号： G11B20/10 ,  G06F13/00 ,  G11B7/005 ,  G11B7/007 ,  G11B7/09 ,  G11B20/12 ,  G11B20/14 ,  G11B27/19 ,  G11B27/24 ,  H04N7/173

CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0901 ,  G11B7/24082 ,  G11B20/10 ,  G11B20/1403 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2562

摘要： A disc drive device capable of preferably executing detection of address information by land pre-pit even after data recording. When detecting address information by land pre-pit from a disc having a land and a groove formed as a recording track and address information recorded as land pre-pit on the land, a push-pull signal is digitized to generate a window signal (window generation circuit (31)), the push-pull signal is integrated during the period based on the window signal (integration circuit (32)) and address information by land pre-pit is extracted from the integrated signal (33, 34, 35, 26).