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81. 发明专利

JP2002319113A MAGNETIC RECORDING/REPRODUCING DEVICE, CLEANING CASSETTE, AND METHOD FOR SETTING CLEANING TIME 失效
公开(公告)号：JP2002319113A
公开(公告)日：2002-10-31
申请号：JP2001123967
申请日：2001-04-23
申请人： SONY CORP
发明人： MORI HIROYA , HASEGAWA SHINICHI , SENSHU YOICHIRO , KOBAYASHI KENJI , MOTONO CHIHIRO , KOMATSU KOJI , SATO TATSUYA
IPC分类号： G11B23/30 , G11B5/008 , G11B5/02 , G11B5/41 , G11B15/00 , G11B23/04
摘要： PROBLEM TO BE SOLVED: To eliminate the possibility of unnecessary shortening of a head life caused by excessive head scraping when the management of cleaning time is entrusted to a user. SOLUTION: The magnetic recording/reproducing device is provided with a control microcomputer unit 7 for identifying whether a cassette loaded on a mechanical deck part 1 is a cleaning cassette 2 or not, and suppressing a command inputted by a user through an operation device part 8 to execute a cleaning operation in the mechanical deck part 1 for a predetermined time when the loaded cassette is identified to be the cleaning cassette 2.

82. 发明专利

JP2001060362A INFORMATION RECORDING AND REPRODUCING DEVICE, ITS CORRECTION METHOD, AND MEDIA 失效
公开(公告)号：JP2001060362A
公开(公告)日：2001-03-06
申请号：JP23633499
申请日：1999-08-24
申请人： SONY CORP
发明人： HASEGAWA SHINICHI
IPC分类号： G11B20/10 , G11B11/105 , G11B20/12
摘要： PROBLEM TO BE SOLVED: To shorten the execution time required for correction. SOLUTION: When it is judged whether or not a medium is inserted S1. When the medium is inserted, the PEP data of the medium are read to obtain media information S2. When the test sector information of the media is read S3, and it is judged whether or not correction information is recorded in the test sector S4. When the correction information is not recorded S4, the correction information recorded in the nonvolatile memory is written in the register S5, the correction is executed S6, and the result of the correction is written in the test sector of the medium S7. When the correction information is recorded in the test sector of the medium, the correction information is written in the register S8, and the proofreading is executed S9.

83. 发明专利

JPH11259989A ADJUSTMENT METHOD 失效
公开(公告)号：JPH11259989A
公开(公告)日：1999-09-24
申请号：JP5521998
申请日：1998-03-06
申请人： SONY CORP
发明人： HASEGAWA SHINICHI
IPC分类号： G11B20/10 , G11B7/00 , G11B7/004 , G11B11/10 , G11B19/02
摘要： PROBLEM TO BE SOLVED: To remarkably reduce the occurrence of a reproducing error for a disk like record medium by adjusting the reproducing precision of the reproducing device of the disk like record medium so as to become within the prescribed first range before shipping and adjusting it so as to become within the second range relaxing the first range before shipping or after shipping. SOLUTION: Amplitude of an RF signal S18 is adjusted by a gain and an offset amount of a VGA: 22 based on a first amplitude threshold value and a first offset threshold value in shipping inspection of a factory, and adjustment values according to medium types are stored in a DSP: 3. Further, a second amplitude threshold value and a second offset threshold value in market setting the first amplitude threshold value and the first offset threshold value larger by 10-30% extent according to the dispersion in reflectance on an irradiation surface of a magneto-optical disk are stored in the DSP: 3. Thus, the amplitude of the RF signal S18 is adjusted so as to be analog-digital converted correctly in the market.

84. 发明专利

JPH11195258A TAPE TRAVELING MEMBER OF RECORDING AND REPRODUCING DEVICE AND ITS PRODUCTION 失效
公开(公告)号：JPH11195258A
公开(公告)日：1999-07-21
申请号：JP36046997
申请日：1997-12-26
申请人： SONY CORP
发明人： KOBAYASHI HIROSHI , SHIMADA MITSUHIRO , HASEGAWA SHINICHI
IPC分类号： G11B23/087 , G11B15/60
摘要： PROBLEM TO BE SOLVED: To lessen the load that a tape receives and to enable stable traveling by applying a lubricant of the same kind as a lubricant contained in the magnetic powder of the tape or approximate thereto on a surface activated by irradiation of the contact surface with the resin molded tape with UV rays, thereby executing chemical bonding. SOLUTION: A shaft rod 22 of a drum 8 housed in a UV irradiation device 20 is rotated at a low speed and the drum is subjected to the activation treatment by uniformly irradiating the entire peripheral surface thereof with the UV rays of a short wavelength from a UV lamp 21. Next, the activated drum 8 is immersed into a lubricant soln. 24 prepd. by using the lubricant identical or similar to the lubricant contained in the magnetic powder of the magnetic tape and is thus coated prior to stabilizing of the surface. Consequently, the lubricant is chemically bonded as an intermediate group to the activated surface and the film of the lubricant of an extremely thin film below 100 nm is formed. The more than needed lubricant is wiped away by cloth, etc., after drying. As a result, only the film of the chemically bonded lubricant remains and the improvement in image quality and voices is achieved.

85. 发明专利

JPH10134366A OPTICAL DISK DEVICE 失效
公开(公告)号：JPH10134366A
公开(公告)日：1998-05-22
申请号：JP30699596
申请日：1996-10-31
申请人： SONY CORP
发明人： HASEGAWA SHINICHI
IPC分类号： G11B11/10 , G11B7/085 , G11B7/09 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To precisely seek in a short time by switching a low speed binarization means and a high speed binarization means, calculating the number of tracks traversed by laser light based on the binary data and supplying a signal according to that to a moving means. SOLUTION: A slide driver 9 performs control for making a slide error signal SES zero by minutely moving only a lens of a head part, and moves the head part of an optical block 4 in the radial direction of a disk 3 at a seek time. In such a case, the block 4 sends out a traverse signal ATES to a binarization block 10, and converts the signal ATES to the binary data D1 to send to a DSP 5 (digital signal processor). The DSP 5 controls the number of moving tracks and the moving speed of the block 4 at the seek time based on the data D1. In such a manner, a magneto-optical disk driver 1 seeks the head part of the block 4 to a required track position on the recording surface 3A of the disk 3, and irradiates the laser light in the focal state.

86. 发明专利

JPH1040545A METHOD AND APPARATUS FOR DATA ERASING 失效
公开(公告)号：JPH1040545A
公开(公告)日：1998-02-13
申请号：JP20938996
申请日：1996-07-22
申请人： SONY CORP
发明人： HASEGAWA SHINICHI , IMAI MITSUGI
IPC分类号： G11B11/10 , G11B7/00 , G11B7/0055 , G11B7/30 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To erase data without any remaining element to realize compatibility of recording medium between a low density and a high density recording/ reproducing apparatuses by radiating the high density laser spot for the erasing scanning for several times by changing the scanning position in the tracking direction to the data track recording the data in the low density. SOLUTION: When the track to be erased is judged as a low density recording track TkL, a high density recording/reproducing apparatus executes, for the pit PL of TkL, the first and second erasing scannings LS1, LS2 with the tracking bias voltage TOF in the tracking bias shift mode. In this case, in the LS1, TOF is added in the positive side, while in the LS2, it is added in the negative side to the tracking error signal TE to execute the erasing scanning under the condition that the tracking position is deviated to the upper or lower direction from the track center TC. Thereby, erasing of the low density recording data track can be realized without resulting in the remaining element and thereby disc compatibility can be realized between the low density and high density recording/reproducing apparatus.

87. 发明专利

JPH09128766A DISK DEVICE 失效
公开(公告)号：JPH09128766A
公开(公告)日：1997-05-16
申请号：JP30837695
申请日：1995-10-31
申请人： SONY CORP
发明人： HASEGAWA SHINICHI
IPC分类号： G11B11/10 , G11B7/085 , G11B7/125 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To improve a static characteristic after a jump operation by driving and controlling a moving means so that the moving direction of a beam spot is reversed when it is confirmed that the signal level of a tracking error signal reaches within a prescribed threshold. SOLUTION: A DSP 21 allows an actuator for tracking to move an objective lens so that the beam spot of a laser light beam L1 moves toward a target track by transmitting a control signal S5 to a tracking driving circuit 9. Next, the DSP 21 judges whether after the absolute value of the signal level of the tracking error signal to be supplied from an optical block 8 exceeds a threshold level, the absolute level reaches within the threshold or not. Thereafter, when the DSP 21 obtains an affirmative result, the DSP 21 reverses the sign of the control signal S5 to transmit it to the circuit 9. After this, the DSP weakens the driving output of the actuator for tracking gradually and completes the processing procedure of this operation mode when the affirmative result is obtained.

88. 发明专利

JPH07211002A DISC-LIKE RECORDING MEDIUM, AND RECORDING AND/OR REPRODUCING APPARATUS THEREFOR 失效
公开(公告)号：JPH07211002A
公开(公告)日：1995-08-11
申请号：JP237894
申请日：1994-01-14
申请人： SONY CORP
发明人： HASEGAWA SHINICHI
IPC分类号： G11B20/12 , G11B7/007 , G11B11/10 , G11B11/105
摘要： PURPOSE:To effectively prevent a sector mark from being left undetected or being erroneously detected, by providing a predetermined buffer pattern at a position where a first state of a pattern constituting the sector mark adjoins a second state. CONSTITUTION:A sector mark of a zone of an odd number has a first state represented by a pit and a-second state by a land, as shown in Fig. (a). A predetermined buffer pattern is set in the sector mark where three first states adjoin two second states. More specifically, the sector mark comprises a first area consisting of a 6T land, a 12T pit, a 6T land, a 12T pit, a 6T land and a 12T pit, a buffer area BD of a 6T land and a 6T pit, and a second area of a 12T land, a 6T pit, a 12T land and a 6T pit. A sector mark of a zone of an even number has a first and a second states obtained respectively by inverting the first and second states of the sector mark of the zone of an odd number, i.e., formed of a land and a pitch. The pattern of each sector mark is read by detectors 201-5, 211-5.

89. 发明专利

JPH05182323A TAPE SUPPLY AND TAKE-UP DEVICE AND TAPE CASSETTE USED FOR IT 失效
公开(公告)号：JPH05182323A
公开(公告)日：1993-07-23
申请号：JP35803391
申请日：1991-12-27
申请人： SONY CORP
发明人： OTA SHUICHI , HASEGAWA SHINICHI , UETAKE AKIHIRO , SENSHIYUU YOUICHIROU , SAWADA TAKASHI , SUKAI CHIAKI
IPC分类号： G11B15/675 , G11B23/087
摘要： PURPOSE:To make the constitution of the tape supply and take-up device for a video tape recorder capable of loading two large and small kinds of tape cassettes small-sized without complicating its structure. CONSTITUTION:The device is constituted to be capable of loading two large and small kinds of tape cassettes by moving reel bases 51 and 51 in position in accordance with the large or small tape cassette to be loaded. At the time of loading the large cassette 1, positioning pins 60 and 60 and a lid opener 58 for the small cassette 25 are positioned in a mouth part 4 of the large cassette.

90. 发明专利

JPH05182302A TAPE SUPPLY AND TAKE-UP DEVICE AND TAPE CASSETTE USED FOR THE SAME 失效
公开(公告)号：JPH05182302A
公开(公告)日：1993-07-23
申请号：JP35803491
申请日：1991-12-27
申请人： SONY CORP
发明人： HASEGAWA SHINICHI , OTA SHUICHI , UETAKE AKIHIRO , SAWADA TAKASHI , SENSHIYUU YOUICHIROU , SUKAI CHIAKI
IPC分类号： G11B15/32 , G11B15/675 , G11B23/087 , G11B25/06
摘要： PURPOSE:To use large and small size tape cassettes with reel bases of simple structure and to promote rotation accuracy of tape reels of the large and small tape cassettes respectively and moreover to provide a slide type shutter on the bottom surface of the tape cassette. CONSTITUTION:The reel base 51 is provided with a large cassette mounting part 52a for mounting the tape reel 12 of the large tape cassette 1 and a small cassette mounting part 52b for mounting the tape reel 35 of the small tape cassette 25, and the large cassette mounting part and the small cassette mounting part are coaxially arranged, and also the small cassette mounting part is formed smaller than the large cassette mounting part in diameter and is arranged in a higher position. A diameter of the lower end of a reel base engaging hole 39 of the small tape cassette is made smaller than an outer diameter of the small cassette mounting part of the reel base, while a relief part 16a larger than the outer diameter of the small cassette mounting part of the reel base and smaller than the outer diameter of the large cassette mounting part and also higher than the height of the small cassette mounting part is formed on the lower end part of the reel base engaging hole 16 of the large tape cassette.

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