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公开(公告)号：JPH02126447A
公开(公告)日：1990-05-15
申请号：JP26350388
申请日：1988-10-18
Applicant: SONY CORP
Inventor： WATANABE SATORU , KAWASHIMA TETSUJI , FUJITA GORO
IPC: G11B11/10 , G11B11/105 , G11B19/14 , G11B33/14
Abstract: PURPOSE:To orientate a beam-irradiated area with a required magnetic field and to form a pit in a correct position with simple constitution by delaying timing for inverting the polarity of a modulation magnetic field against a reference clock signal according to a magneto-optical disk. CONSTITUTION:The magneto-optical disk 2 is irradiated by a light beam LA1 is timing of the reference clock signal SCK obtained from a servo area of the disk 2, and consequently a light spot is intermittently formed. On the other hand, the modulation magnetic field HM is variably controlled by delay time of a delay circuit 19 and an amplification factor of a head driving circuit 20 based on the temp. and magnetic characteristic information of the disk 2 recorded in a control track. Then, it is delayed by rising time, rising more than the required magnetic field and holding by holding time. Consequently, the area to be irradiated with the beam LA1 is oriented by a modulation magnetic field of more than the required magnetic field. By this method, pits can be formed in their correct positions with simple constitution.
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112.发明专利
公开(公告)号：JP2006338771A
公开(公告)日：2006-12-14
申请号：JP2005161430
申请日：2005-06-01
Inventor： KAWASHIMA TETSUJI , SHISHIDO YUKIO , TOKUMOTO YOSHIYUKI , IFUKU TORU , NAGANUMA TAKUSHI , ARAI KIYOSHI , MAEDA HIDEHO
IPC: G11B20/12 , G11B7/0045 , G11B7/007
Abstract: PROBLEM TO BE SOLVED: To enable grasping quickly a format situation of a whole disk in an optical disk recording medium in which data can be rewritten and which has a recording layer being multi-layers. SOLUTION: A formatting bit map managing parts of format/unformatted in a whole recording layer is recorded for one recording layer. Movement between layers can be made unnecessary when a format situation of the whole disk is grasped, thereby, grasping the format situation of the whole disk can be performed quickly. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：为了能够快速掌握能够重写数据的光盘记录介质中的整个盘的格式情况，并且具有多层的记录层。 解决方案：对于一个记录层记录管理整个记录层中的格式/未格式化的部分的格式化位图。 当抓住整个盘的格式状况时，可以不需要层之间的移动，从而可以快速地执行整个盘的格式化。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2006338770A
公开(公告)日：2006-12-14
申请号：JP2005161429
申请日：2005-06-01
Inventor： KAWASHIMA TETSUJI , SHISHIDO YUKIO , TOKUMOTO YOSHIYUKI , IFUKU TORU , NAGANUMA TAKUSHI , ARAI KIYOSHI , MAEDA HIDEHO
IPC: G11B7/0055 , G11B7/007
CPC classification number: G11B7/00736 , G11B7/00454 , G11B7/24038 , G11B20/1217 , G11B2020/1228 , G11B2020/1231 , G11B2020/1288 , G11B2020/1297 , G11B2220/216 , G11B2220/218 , G11B2220/235 , G11B2220/257
Abstract: PROBLEM TO BE SOLVED: To shorten a formatting time required at the time of discharging a disk in an optical disk recording medium in which data can be rewritten and which has a recording layer being multi-layers. SOLUTION: In this recording method, background format is performed preferentially from a recording layer in which recording of user data is to be performed last out of a plurality of recording layers. For example, when interchangeability with a reproduction exclusive apparatus is requested at the point of time at which recording of the user is performed in only a first recording layer, it is required that format (recording of dummy data) is performed in all recording layers in an unrecorded region of an inner periphery side more than a terminal position of the user data in the first recording layer, a part in which format is to be performed in a recording layer in which recording is to be performed last can be decreased at the time of discharging the disk by performing background format preferentially from the recording layer in which recording is to be performed last. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：缩短在其中可以重写数据并且具有多层记录层的光盘记录介质中的盘的放电时所需的格式化时间。 解决方案：在该记录方法中，优先从要在多个记录层中执行用户数据的记录的记录层执行背景格式。 例如，当在仅在第一记录层中执行用户记录的时间点请求与再现专用装置的可互换性时，需要在所有记录层中执行格式（伪数据的记录） 在第一记录层中的用户数据的终端位置以上的内周侧的未记录区域，在最后要执行记录的记录层中要进行格式的部分可以在此时减少 通过从最后执行记录的记录层优先执行背景格式来排出磁盘。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2004342217A
公开(公告)日：2004-12-02
申请号：JP2003137108
申请日：2003-05-15
Inventor： KAWASHIMA TETSUJI , SHISHIDO YUKIO
IPC: G11B20/10 , G11B7/0045 , G11B7/007 , G11B20/12
Abstract: PROBLEM TO BE SOLVED: To shorten the recording time in a recordable multilayer disk and to improve the reliability as to a recording medium including a plurality of information recording layers and a recording device and a recording method to cope with the recording medium. SOLUTION: On the basis of the total amount of data recorded in the recording medium of a multilayer structure, an area range is set for performing data writing making each of recording layers as a target. Especially, the setting is made to minimize the recording amount of a tail end area (readout) formed for reproduction compatibility, and then a recording operation time is shortened. During reproduction, on the basis of the total amount of data to be recorded from the place of a high possibility of accurate information reproduction, an area range for performing data writing is set making each of the recording layers as the target. Thus, a highly reliable data writing operation is realized. COPYRIGHT: (C)2005,JPO&NCIPI
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公开(公告)号：JP2002050120A
公开(公告)日：2002-02-15
申请号：JP2000233558
申请日：2000-08-01
Applicant: SONY CORP
Inventor： SAKO YOICHIRO , KAWASHIMA TETSUJI , INOGUCHI TATSUYA
Abstract: PROBLEM TO BE SOLVED: To perform sufficient processing even by firmware by minimizing the number of bits to be rewritten including error detection codes and error correction codes when performing management accompanied by watermark rewriting by using a watermark embedded in contents. SOLUTION: When data rewriting is requested, total data amount including CRC codes to be rewritten is found for each pattern to be rewritten. Then, patterns with the minimum total amount of data including CRC codes to be rewritten are extracted from the patterns of which the data have to be rewritten and the most suitable pattern is selected from among them, and an arrangement of data which can be rewritten is decided. Therefore, a data rewriting amount including CRC codes caused by rewriting the data is minimized. Thus, watermark rewriting can sufficiently be performed by using firmware.
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Patent Agency Ranking
公开(公告)号：JP2002025107A
公开(公告)日：2002-01-25
申请号：JP2000208933
申请日：2000-07-10
Applicant: SONY CORP
Inventor： ITO KUNIO , KAWASHIMA TETSUJI , MORIZUMI TOSHIO
Abstract: PROBLEM TO BE SOLVED: To ensure compatibility in reproduction with a rewritable optical disk without imposing a load on an optical disk device. SOLUTION: The reflectance of CD in totality is made nearly equal to the reflectance of CD-RW e.g. by incorporating a dye material having absorption in the wavelength range of light used into a disk substrate 21.
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公开(公告)号：JP2002025064A
公开(公告)日：2002-01-25
申请号：JP2000211879
申请日：2000-07-12
Applicant: SONY CORP
Inventor： SHIMIZU YASUNARI , KAWASHIMA TETSUJI
IPC: G11B20/14 , G11B7/0045
Abstract: PROBLEM TO BE SOLVED: To increase the linear density of a recording medium. SOLUTION: The recording device for recording a signal on the basis of a reference clock by using an optical disk 101 whereon the signal is recorded with the specified linear density on the signal recording surface, is provided with an optical pickup 11 for recording the signal along a recording track of the optical disk 101 and a control part 61 for controlling so as to record the signal with the density higher than the specified linear density.
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118.发明专利
公开(公告)号：JP2001357622A
公开(公告)日：2001-12-26
申请号：JP2000176593
申请日：2000-06-13
Applicant: SONY CORP
Inventor： INOGUCHI TATSUYA , KAWASHIMA TETSUJI , SAKO YOICHIRO
Abstract: PROBLEM TO BE SOLVED: To perform a sufficient processing even by firmware and to access necessary data at high speed even if management accompanied with the rewriting of a watermark is performed by using a watermark buried in contents. SOLUTION: Data on the contents are managed by the packet of a prescribed length. A packet (ID=0) where a payload is described and a packet (ID=1) showing the position of the packet of the payload are installed as the packets. The packet (ID=0) where the payload is described is installed at every interval which can sufficiently be processed by firmware. The packet between them are set to be the packet (ID=1) showing the position of the packet of the payload. Thus, the packet (ID=1) showing the position of the packet of the payload is detected and a system finds the packet (ID=0) where the payload is described. Then, the packet (ID=0) is detected and the processing is immediately performed.
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公开(公告)号：JP2001274683A
公开(公告)日：2001-10-05
申请号：JP2000087125
申请日：2000-03-23
Applicant: SONY CORP
Inventor： KAWASHIMA TETSUJI
Abstract: PROBLEM TO BE SOLVED: To perform pulling-in at high speed. SOLUTION: A PLL circuit 10 is provided with a voltage control oscillator 15 for generating a signal in accordance with a voltage, a frequency divider 16 for dividing the frequency of the signal, a frequency comparing part 11 for comparing the phase of a phase lock clock PLCK from the divider 16 with that of an RF signal and outputting a phase comparison result, and a frequency comparing part 12 for comparing the frequency of an N-fold phase lock signal N×PLCK from the oscillator 15 with that of the RF signal and outputting a frequency error signal with a length corresponding to a frequency difference. The voltage control oscillator 15 generates a channel clock synchronized with the RF signal based on the phase comparison result and the frequency error signal.
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公开(公告)号：JP2001266508A
公开(公告)日：2001-09-28
申请号：JP2000088600
申请日：2000-03-24
Applicant: SONY CORP
Inventor： KUMAI SATOSHI , KAWASHIMA TETSUJI , KUMAGAI EIJI , NAGASHIMA KENJI , MORIZUMI TOSHIO
Abstract: PROBLEM TO BE SOLVED: To realize a recording/reproducing system which can appropriately perform recording and reproduction of data or/from an optical disk with enhanced recording density, and can comply with the optical disk of a present format. SOLUTION: A first interleaver 14 and a second interleaver 15 with a different delay parameter, respectively are provided for a CIRC encoder 12 to perform error correcting coding processing by CIRC and these switching are performed according to the recording density of the optical disk 100 to perform the recording of data. Besides, a first de-interleaver 25 corresponding to the first interleaver 14 and a second de-interleaver 26 corresponding to the second interleaver 15 are provided in a CIRC decoder 23 and these switching are performed according to the recording density of the optical disk 100 to perform the reproduction of data.
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