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41. 发明专利

JPH0957798A MOLD APPARATUS FOR MOLDING DISK-SHAPED RECORDING MEDIUM AND METHOD FOR MOLDING DISK-SHAPED RECORDING MEDIUM 失效
公开(公告)号：JPH0957798A
公开(公告)日：1997-03-04
申请号：JP21638595
申请日：1995-08-24
申请人： SONY CORP , SONY DISC TECHNOLOGY INC
发明人： KUWABARA TOMOJI , KISHI SHINSUKE , HIRAYAMA NOBUYUKI
IPC分类号： B29C45/36 , B29C45/26 , B29L17/00 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To improve working efficiency by simplifying the stamper attaching and detaching operation. SOLUTION: A stationary die 11 and a movable die are provided which face each other and form a cavity for molding a disk substrate. A stamper 18 is mounted on the cavity forming surface of one of the dies by means of a stamper holding mechanism 30. The stamper holding mechanism 30 comprises a plurality of individual stamper holding members 31 for holding the outer peripheral portion 26 of the stamper 28, a plurality of elastic means 32 for applying elastic force to the individual stamper holding members 31 in the directions of diameter of the stamper 18, and stamper holding member driving means 33 that is driven with the dies open, for moving the individual stamper holding members 31 in the directions of diameter of the stamper 18 against the elastic force of the elastic means 32. The stamper 18 can be detached or attached by operating the stamper holding mechanism 30.

42. 发明专利

JPH08287637A DISK CARTRIDGE AND ITS MANUFACTURE AND MANUFACTURING DEVICE 失效
公开(公告)号：JPH08287637A
公开(公告)日：1996-11-01
申请号：JP11254195
申请日：1995-04-13
申请人： SONY DISC TECHNOLOGY INC
发明人： FUKUCHI YOSHIJI
IPC分类号： G11B23/03 , G11B23/113
摘要： PURPOSE: To obtain a disk cartridge whose manufacturing process is simple by forming a groove at a prescribed inclined angle to a shell in its one surface or both side surfaces respectively as a guide part and bending a tip part of a shutter to engage with the groove. CONSTITUTION: In a shell half 10, the guide part 10B consisting of the groove at the prescribed inclined angle to a flat surface of a recessed part 10A parallel to the sliding direction of the shutter 11 is formed. The tip part 11A of the shutter 11 is bent into a chevron shape in conformity with the inclined angle of the guide part 10B, and is held in a space formed by the guide part 10B and a projecting upper end part 10C. By forming the shell half 10 integrally with the upper end part 10C as a detaching preventing member of he shutter 11, the number of processes for forming the shell is reduced, and also one bent part of the shutter 11 is enough, thus facilitating the manufacture.

43. 发明专利

JPH08287592A MOTION DISTURBANCE DETECTOR 失效
公开(公告)号：JPH08287592A
公开(公告)日：1996-11-01
申请号：JP11249095
申请日：1995-04-13
申请人： SONY DISC TECHNOLOGY INC
发明人： NAGAO YOSHIHIRO
IPC分类号： G01D5/30 , G01P3/44 , G11B19/247 , G11B19/28
摘要： PURPOSE: To detect the motion disturbance of a mobile object by outputting an error pulse based on phase difference between a pulse signal corresponding to the moving speed of the mobile object to be inputted to a phase lock loop(PLL) and a pulse signal from the voltage controlled oscillator(VCO) of the PLL. CONSTITUTION: An encoder 11a of a motor generates the sequence of pulses corresponding to the moving speed of the mobile object. A phase comparator 17 consisting of the PLL of a motion disturbance detector 16 inputs a signal S1 from the encoder 11a and a pulse signal S2 through a frequency divider 20 of a VCO 19, compares the phases of two pulse signals and outputs an error pulse S3. An LPF 18 inputs the pulse S3, generates a control voltage S4 corresponding to its frequency and outputs it to the VCO 19 and a time/voltage converter 21. Based on the voltage S4, the coverter 21 converts the pulse S3 to a saw-tooth wave S5. A voltage comparator 23 inputs the sawtooth wave S5 through an LPF 22, compares the peak value of S5 with a reference voltage S6 and detects the motion disturbance.

44. 发明专利

JPH08249816A DATA RECORDING METHOD, DATA RECORDING DEVICE AND RECORDING MEDIUM OF DATA 失效
公开(公告)号：JPH08249816A
公开(公告)日：1996-09-27
申请号：JP7841295
申请日：1995-03-10
申请人： SONY DISC TECHNOLOGY INC
发明人： KANEDA YORIAKI
IPC分类号： G11B20/10 , G11B7/00 , G11B7/0045 , G11B7/007 , G11B20/12 , G11B20/18
摘要： PURPOSE: To urge attention by warning and to prevent the generation of high sound volume by successively recording audio data and user's data after intentionally forming a bit error. CONSTITUTION: When an audio data string is recorded instead of a first data string, a recording medium 21 is formed so as to reproduce the audio data string by a reproducing device. When reproduction is performed by the reproducing device in this recording method, a prescribed voice data string is interposed between the first data strings so that the head part of the first data string is reproduced in the condition that a bit error being hardly corrected by a second error correcting code and next a voice data string is reproduced. A bit error is intentionally formed and the first data string, the prescribed voice data string and the second error correcting code are recorded in the recording medium 21. A bit error generated in the head part of the first data string is set such an extent that error is corrected by the first error correcting code at the time of reproducing the user's data DU.

45. 发明专利

JPH08235638A OPTICAL RECORDING MEDIUM AND ITS MANUFACTURE 失效
公开(公告)号：JPH08235638A
公开(公告)日：1996-09-13
申请号：JP3702395
申请日：1995-02-24
申请人： SONY CORP , SONY DISC TECHNOLOGY INC
发明人： KASHIWAGI TOSHIYUKI , FURUKI MOTOHIRO , FUKUCHI YOSHIJI , YANAGISAWA YOSHINAGA
IPC分类号： G11B7/24 , G11B7/26 , G11B11/10 , G11B11/105
摘要： PURPOSE: To obtain an optical recording medium which enables a high-density reproducing operation by a method wherein a light transmitting layer is made thinner than of a substrate which has an information signal part. CONSTITUTION: A disk support layer 2 which is molded by an injection molding method and carries an information signal is coated with a reflecting film 3. Then, a light transmitting layer 4 which transmits a laser beam is formed to have a small thickness as compared with the support layer 2. When the light transmitting layer 4 is made thinner than the support layer 2 in this manner, it is possible to restrain the generation of the degradation of a reproduced signal due to a coma even when the numerical aperture of an objective lens for a pickup is large, and a high-density reproducing operation can be performed. In addition, the part of the information signal is a magnetic recording film, the light transmitting layer 4 may be an ultraviolet curing resin layer, and the thickness of the light transmitting layer 4 is desirably 0.5mm or lower.

46. 发明专利

JPH0863798A PRODUCTION OF PLIED-UP DISK AND PLIED-UP DISK 失效
公开(公告)号：JPH0863798A
公开(公告)日：1996-03-08
申请号：JP21523894
申请日：1994-08-18
申请人： SONY DISC TECHNOLOGY INC
发明人： FUKUCHI YOSHIJI
IPC分类号： G11B7/24 , G11B7/26
摘要： PURPOSE: To effectively adhere a disk on a recording side and a disk on an non-recording side by forming the inside diameter of the center hole of the former disk to a normal size and forming the inside diameter of the center hole of the latter disk slightly larger than the normal size as a margin for protrusion of an adhesive. CONSTITUTION: The outside diameter D1 of the dummy disk 13 is set smaller than the outside diameter D of the recording side disk 12. Further, the inside diameter d1 of the center hole 13a of the dummy disk 13 is set larger than the inside diameter (d) of the center hole 12a of the recording side disk 12. For example, the diameters are about the outside diameter D1 =D-0.2mm and the inside diameter d1 =d+0.2mm with respect to the outside diameter D=8 to 12cm. In such a case, the outside diameter of the recording side disk 12 and the inside diameter (d) of the center holes 12a are the normal sizes. A protrusion part 14a is confined within the size of the recording side disk 12 by affording the size difference between the recording side disk 12 and the dummy disk 13 in such a manner and, therefore, the plied-up disk 11 is made into the normal sizes.

47. 发明专利

JPH0817076A FORMATION OF OPTICAL MASTER DISK AND OPTICAL MASTER DISK 失效
公开(公告)号：JPH0817076A
公开(公告)日：1996-01-19
申请号：JP17167794
申请日：1994-06-30
申请人： SONY DISC TECHNOLOGY INC
发明人： YUBI HIROSHI
IPC分类号： G11B7/26
摘要： PURPOSE:To facilitate the execution of stages up to stamper master disks in a fully equipped large factory and stages for recording desired signals on recording layers, etc., in a small factory. CONSTITUTION:A photoresist is applied to one surface 1A of an extremely smoothly formed glass substrate 1 in a first stage (B) to form a photoresist layer 2 and a nickel metal layer 3 of prescribed thickness is formed on this photoresist layer 2 in a second stage (C). The metal layer 3 is peeled from the photoresist layer 2 and a mirror stamper 5 is formed as a mirror master 4 in third stages (D), (E). A negative recording material is applied to one surface 5A of this mirror stamper 5 to form a recording layer 6, by which the stamper master disk 7 to constitute the master disk of the stamper 8A is formed in a fourth stage (F). The stages described above are executed in the large factory. The desired signals are recorded on the recording layer 6 of the stamper master disk 7 by irradiating the layer with energy beams, by which the stamper 8A is formed in a fifth stage (G) in the small factory.

48. 发明专利

JPH07176080A OPTICAL RECORDING MEDIUM AND ITS PRODUCTION 失效
公开(公告)号：JPH07176080A
公开(公告)日：1995-07-14
申请号：JP31977893
申请日：1993-12-20
申请人： SONY DISC TECHNOLOGY INC
发明人： YANAGISAWA YOSHINAGA
IPC分类号： G11B7/24 , G11B7/26
摘要： PURPOSE:To make an exclusive read-out device unnecessary and to read out a pattern code with reproducing beams by forming a pattern code which can be read out with reproducing beams for reading of data in the area except for the data recording area of a substrate. CONSTITUTION:The optical disk 1 is produced by forming a reflecting film 6 such as Al and Ni film on a transparent substrate 5 and forming a protective film 7 comprising such as a UV-curing resin to protect the reflecting film 6 from water or O2 in the air. The one principal surface 5a of the substrate 5 has lots of data pits 8. In order to reproduce the data recorded in the optical disk 1, the principal plane 5b opposite to the principal plane 5a is irradiated with reproducing beams such as laser light to detect the difference of reflectance between the incident light and the reflected light of reflectance due to pits 8. By this method, a pattern code is formed in the area except for the data recording area of the substrate 5 so that the pattern code can be read out with reproducing beams to read out the data. Thereby, by recording the number and content of the record in the code, these records can be read out without using an exclusive read-out device but with the reproducing beams.

49. 发明专利

JP2005017068A Double refraction measuring device and method 有权
$Double refraction measuring device and method$
标题翻译：双重压力测量装置和方法
公开(公告)号：JP2005017068A
公开(公告)日：2005-01-20
申请号：JP2003180918
申请日：2003-06-25
申请人： Sony Disc Technology Inc , 株式会社ソニー・ディスクテクノロジー
发明人： NOJIMA KAZUHISA , FUJITA SHINICHI , KIKUNO EIJIRO
IPC分类号： G01N21/23
摘要： PROBLEM TO BE SOLVED: To provide a double refraction measuring device capable of measuring the main axis highly accurately relative to a light transmission layer having optical anisotropy, and realizing the automatization of measurement.
SOLUTION: This double refraction measuring device is constituted so that an optical disk 6 is irradiated with circularly polarized laser light at an approximately vertical angle to the optical disk 6 surface. As for reflected laser light, only light having a fixed polarization angle is allowed to pass by an analyzer 4, and the light intensity of the passing laser light is detected by a light intensity detector 5. In this case, the analyzer 4 is rotated around the reflection direction of the laser light as an axis, and the passable polarization angle is changed according to the time. Hereby, the acquired light intensity generates a series of waveform data, and the minimum value and the maximum value at each period, and polarization angles when the minimum value and the maximum value are acquired are detected, and the direction of the main axis of the light transmission layer is determined base on the values.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够相对于具有光学各向异性的光透射层高精度地测量主轴并实现测量自动化的双折射测量装置。解决方案：该双折射测量装置被构造成使得光盘6以与光盘6表面大致垂直的角度的圆偏振激光照射。对于反射的激光，只有具有固定的偏振角的光被分析器4通过，并且通过光强度检测器5检测通过的激光的光强度。在这种情况下，分析器4旋转作为轴的激光的反射方向和通过的偏振角根据时间而变化。由此，获取的光强度产生一系列波形数据，并且检测每个周期的最小值和最大值以及当获取最小值和最大值时的偏振角，并且检测主轴的方向光传输层根据值确定。版权所有（C）2005，JPO＆NCIPI

50. 发明专利

JP2004167979A Molding die for substrate and stamper 审中-公开
公开(公告)号：JP2004167979A
公开(公告)日：2004-06-17
申请号：JP2002339149
申请日：2002-11-22
申请人： Sony Disc Technology Inc , 株式会社ソニー・ディスクテクノロジー
发明人： KISHI SHINSUKE , MIURA KAZUHIRO
IPC分类号： B29C45/73 , B29L17/00 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To improve transcriptability in an outer periphery without heating a mold in a molding die for a substrate up to a high temperature.
SOLUTION: A machine comprising a fixed die 1 and a movable die 4 are set at the opposite sites to mold a main surface of a disk substrate by a stamper 10 installed in either of the fixed die 1 or the movable die 4 is structured in such a manner that a heat conduction at the site of the outer periphery of the stamper 10 is poorer than at the site of the center of the stamper 10.
COPYRIGHT: (C)2004,JPO

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