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31. 发明专利

JP2000298843A OPTICAL DISK AND OPTICAL-DISK RECORDING/REPRODUCING APPARATUS 失效
公开(公告)号：JP2000298843A
公开(公告)日：2000-10-24
申请号：JP2000095973
申请日：2000-03-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKEMURA YOSHIYA , FURUMIYA SHIGERU , ISHIDA TAKASHI , AOKI YOSHITO , OHARA SHUNJI , KAMIOKA YUICHI , GUSHIMA TOYOJI
IPC分类号： G11B7/00 , G11B7/004 , G11B7/007 , G11B7/09 , G11B7/24 , G11B20/12 , G11B27/10 , G11B27/19 , G11B27/24 , G11B27/30
摘要： PROBLEM TO BE SOLVED: To provide an optical disk which reduces the read defect of an address signal due to shift of a track reduces the track deviation after a sector address is passed, and further discriminate a land track from a groove track. SOLUTION: This optical disk is a land and groove optical disk which comprises a plurality of sectors which are provided with sector addresses indicating a sector position and data regions. Every sector address comprises a plurality of address blocks. At least four out of the plurality of address blocks include address numbers and overlapping sequential numbers. Two out of at least the four of the plurality of address blocks are formed respectively as one set. Respective sets of the address blocks are arranged so as to be alternately shifted to the inner circumferential side and the outer circumferential side by the width of a half track pitch to the radial direction from the center of a track.

32. 发明专利

JP2000082219A OPTICAL DISK AND REPRODUCING DEVICE 失效
公开(公告)号：JP2000082219A
公开(公告)日：2000-03-21
申请号：JP21822799
申请日：1999-07-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KOISHI KENJI , OHARA SHUNJI , ISHIDA TAKASHI , SATO ISAO , TAKEMURA YOSHIYA , GUSHIMA TOYOJI , DEGUCHI HIRONORI , MITSUI YOSHITAKA
IPC分类号： G11B20/12 , G11B7/00 , G11B7/007 , G11B7/24 , G11B7/30
摘要： PROBLEM TO BE SOLVED: To reduce a circuit scale and to stably perform reproduction by arranging a second data synchronous series in further front of a first data synchronous series arranged on a top of an initial data block of the data blocks constituted of dividing an information data area to plural parts. SOLUTION: Respective plural sectors of a first track are provided with a first header area 11 and a first data area 17 for a user. Respective plural sectors of a second track are provided with a second header area 31 and a second reproducing exclusive data area 37. Respective sectors are provided with the first data synchronous series arranged on the top of one side of the first data area 17 and the second data area 37 and specifying a start timing position of an information data area, the second data synchronous series arranged in front of the first data synchronous series and specifying the start timing position of the information data area and a third data synchronous series arranged in front of the second data synchronous series and having the repeat pattern of the modulation signal of the information data area.

33. 发明专利

JP2000057704A OPTICAL DISK 失效
公开(公告)号：JP2000057704A
公开(公告)日：2000-02-25
申请号：JP23331399
申请日：1999-08-19
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ISHIDA TAKASHI , GUSHIMA TOYOJI
IPC分类号： G11B20/14 , G11B7/007 , G11B20/12
摘要： PROBLEM TO BE SOLVED: To enable address information to be read even with high recording density by providing a plurality of recording sectors each including a header region, a data recording region and a postamble region and modulating data in the data recording region based on the state. SOLUTION: A track 1b is formed on an optical disk 1a in a spiral-manner and the track 1b is divided into recording sectors 1c in accordance with a predetermined physical format. The recording sectors 1c are arranged successively in the circumferential direction to form the track 1b. At the head of each of the recording sectors 1c, a header region 2 is provided so as to previously record therein addressing information for reading address information. The address information can be read, even when high recording density is realized, by providing in the header region a plurality of address regions each being provided at the end thereof with a post-amble region and modulating data in the address regions, based on the state.

34. 发明专利

JPH09167350A OPTICAL DISK AND REPRODUCING DEVICE FOR IT 失效
公开(公告)号：JPH09167350A
公开(公告)日：1997-06-24
申请号：JP2356596
申请日：1996-02-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKEMURA YOSHIYA , OHARA SHUNJI , ISHIDA TAKASHI , AOKI YOSHITO , FURUMIYA SHIGERU , GUSHIMA TOYOJI
IPC分类号： G11B23/36 , G11B7/00 , G11B7/005 , G11B7/007 , G11B20/12 , G11B19/02 , G11B19/12
摘要： PROBLEM TO BE SOLVED: To provide an optical disk realizing the increase of recording capacity, easy to be molded and recording an identification signal making stable tracking control possible, and its reproducing device. SOLUTION: This device has a track on the disk concentrically or spirally, and marks 10, 12 and spaces 11, 13 changed in length on the track. The identification signal combining the marks 10, 12 and the spaces 11, 13 having two kinds or above of prescribed lengths the same extent as the marks 10, 12 and the spaces 11, 13 recording the signal are recorded along the track on the prescribed area on the disk, and the identification signal sequence is formed by aligning and recording the signal on the adjacent track a prescribed radial range in the radial direction.

35. 发明专利

JPH087287A OPTICAL DISK AND OPTICAL DISK RECORDING DEVICE 失效
公开(公告)号：JPH087287A
公开(公告)日：1996-01-12
申请号：JP14013094
申请日：1994-06-22
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： GUSHIMA TOYOJI , KOBAYASHI RYOJI
IPC分类号： G06F3/08 , G11B7/00 , G11B7/004 , G11B7/0045 , G11B20/10 , G11B20/12 , G11B20/18
摘要： PURPOSE:To provide an optical disk and an optical disk recording device continuously recording information without a break even when track jumping is occurred due to an external impact, etc. CONSTITUTION:Track jumping is detected by means of an optical head control means 5 and an address information identifying means 6, input data during the returning operation of a track of an optical head are stored in a storage means 8 and information from the time when track jumping occurs is recorded after the completion of return. Further, by using means for changing the period of intermittent recording, recorded clock frequency and the kind of recorded modulation code and moving the optical head to an emergency recording region, the recording speed of data is temporarily increased, empty capacity is efficiently secured in the storage means 8, the recorded data quantity after the return of the track is reduced by using means for changing an information compression ratio, the kind of error correcting code, the number of quantized bits of A/D conversion and the sampling frequency of A/D conversion and storage capacity in the storage means 8 is kept minimum.

36. 发明专利

JP2003099953A OPTICAL DISK MEDIUM AND REPRODUCING APPARATUS AND RECORDING APPARATUS FOR OPTICAL DISK 审中-公开
公开(公告)号：JP2003099953A
公开(公告)日：2003-04-04
申请号：JP2002073751
申请日：2002-03-18
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MINAMINO JUNICHI , NAKAMURA ATSUSHI , FURUMIYA SHIGERU , ISHIBASHI HIROMICHI , ISHIDA TAKASHI , GUSHIMA TOYOJI
IPC分类号： G11B7/24 , G11B7/005 , G11B7/007 , G11B20/10 , G11B20/14
摘要： PROBLEM TO BE SOLVED: To reduce the overhead as much as possible and to provide an optical disk medium capable of reproducing a clock signal at a high accuracy on the basis of a wobble of a track groove. SOLUTION: The optical disk medium has the track groove along which information is recorded. The track groove includes a plurality of unit segment parts which are arranged along the track groove and which have side surfaces displaced periodically along the track groove. The side surfaces of the plurality of unit segment parts are displaced in a single fundamental period, and sub information assigned to each unit segment part is represented by a combination of wobble patterns selected from a plurality wobble pattern kinds prescribed so that the rise and the fall of the signal waveform are relatively different.

37. 发明专利

JP2000067436A OPTICAL DISK AND RECORDING AND REPRODUCING DEVICE THEREOF 失效
公开(公告)号：JP2000067436A
公开(公告)日：2000-03-03
申请号：JP23014599
申请日：1999-08-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKEMURA YOSHIYA , FURUMIYA SHIGERU , ISHIDA TAKASHI , AOKI YOSHITO , OHARA SHUNJI , KAMIOKA YUICHI , GUSHIMA TOYOJI
IPC分类号： G11B20/12 , G11B7/007 , G11B7/09 , G11B20/14
摘要： PROBLEM TO BE SOLVED: To provide an optical disk capable of reducing erroneous reading of an address signal caused by mis-alignment of track, and reducing the track mis-alignment after having passed a sector address, and further discriminating the track of lands from that of grooves. SOLUTION: This optical disk is a land/groove optical disk having plural sectors provided with sector address areas 5 representing sector positions and data areas. In this case, the sector address has plural address blocks, and at least four of the plural address blocks contain address numbers and duplicate serial numbers respectively, and two of at least four of the plural address blocks are each paired, and each pair of the address blocks is arranged to be alternately displaced to the inner and outer circumferential sides from the center of the track 2 in the radial direction by approximately a half track pitch width.

38. 发明专利

JP2000057584A OPTICAL DISK AND ITS RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JP2000057584A
公开(公告)日：2000-02-25
申请号：JP23014499
申请日：1999-08-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKEMURA YOSHIYA , FURUMIYA SHIGERU , ISHIDA TAKASHI , AOKI YOSHITO , OHARA SHUNJI , KAMIOKA YUICHI , GUSHIMA TOYOJI
IPC分类号： G11B20/12 , G11B7/007 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To detect precisely a position and polarity of an ID part even when an offset exists in a reproducing light beam, and a dropout exists in a regenerative signal by providing the ID part symmetrically arranged in a middle position between a land and a groove. SOLUTION: Respective address groups are shifted by Tp/2 from a track center in the radial direction, and one side address group is shifted by Tp/2 to an inner peripheral side of an optical disk, and the other side address group is shifted by Tp/2 to the outer peripheral side of the optical disk. A TE signal becomes a value in proportion to a positional shift between a light spot 24 and a track group in data areas 6, 7 with grooves, and it becomes the value in proportion to the positional shift between the light spot and a pit similarly in a sector address area 5 constituted of the pit also. Further, in the TE signal, since the polarity of the TE signal is changed by whether the pit 25 exists in the inner peripheral side or the outer peripheral side for the light spot 24, the TE signal with different polarity is obtained by an arrangement position of an address block.

39. 发明专利

JPH11162108A OPTICAL DISK DEVICE, TIMING GENERATOR CIRCUIT AND INFORMATION RECORDING AND REPRODUCING METHOD 失效
公开(公告)号：JPH11162108A
公开(公告)日：1999-06-18
申请号：JP32743597
申请日：1997-11-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： GUSHIMA TOYOJI
IPC分类号： G11B20/10 , G11B7/00 , G11B7/005 , G11B20/14 , G11B20/18 , G11B27/30 , G11B27/36
摘要： PROBLEM TO BE SOLVED: To stably carry out reproduction of an address and carry out recording and reproduction of data with a high precision even in the case where the umber of rotations of an optical disk departs from a reference value or even in the case where a read clock has poor quality. SOLUTION: A read clock 208 generated by a PLL circuit 202 on the basis of a signal obtained by binarizing a reproducing signal from an optical disk is inputted to a first sector counter 205. A reference clock generated by a reference clock generator circuit 203 is inputted to a second sector counter 206. A gate signal generator circuit 207 receives outputs of the first and second sector counters 205 and 206, then selects one of the outputs of the first and second sector counters 205 and 206 in accordance with a disk rotation state signal, and outputs the selected output as a gate signal for controlling the operation of a reproducing signal binarization circuit 201, the PLL circuit 202 and the like.

40. 发明专利

JPH09282668A OPTICAL DISK 失效
公开(公告)号：JPH09282668A
公开(公告)日：1997-10-31
申请号：JP8923896
申请日：1996-04-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MUTO AKIRA , OHARA SHUNJI , ISHIDA TAKASHI , GUSHIMA TOYOJI , DEGUCHI HIRONORI
IPC分类号： G11B20/12 , G11B7/007
摘要： PROBLEM TO BE SOLVED: To provide a format having large capacity and high reliability. SOLUTION: In the format of an optical disk 19, a data recording area 4 is provided in the respective sectors 1c into which a track is divided and the end of the data recording area is made to be a guard data recording area 8 for recording the data of specified patterns and dummy data. The data recording areas 4 are provided in the respective sectors into which the track is divided and the end of the data recording area is preferably made to be a guard data recording area 8 for repeatedly recording more than one piece of data.

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