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公开(公告)号：JPH10320903A
公开(公告)日：1998-12-04
申请号：JP12773297
申请日：1997-05-19
Applicant: SONY CORP
Inventor： YAMAMOTO MASANOBU , SAITO MAKI
IPC: G11B23/30 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/005 , G11B7/135 , G11B7/1372 , G11B7/24 , G11B11/10 , G11B11/105 , G11B19/12 , G11B23/03 , G11B23/28
Abstract: PROBLEM TO BE SOLVED: To enable recording and reproducing of data with various optical disks, if necessary, to improve usability by disposing magnetic field generating means on the side irradiated with a laser beam to apply a modulated magnetic field in accordance with types of the optical disks. SOLUTION: A concave portion of an identification region formed on a cartridge of an optical disk 12 is detected by a disk discriminator 50 to determine a type of information recording surfaces. When the optical disk 12 is a magneto-optical disk, operations of a modulation coil driving circuit 56 and a laser driving circuit 57 turn on to thermomagnetically record user data on the optical disk. When the optical disk 12 is of a phase-change type or of an overwrite type, the operation of the laser driving circuit 57 turns on to record data in the form of a bit train. In this case, a laser beam is allowed to irradiate optical disks stored in a memory 54 with a standard amount of laser light in accordance with their respective types, and an appropriate light amount is set based on the result obtained thereby. In addition, a modulated magnetic field is applied in accordance with a thickness of a light transmitting layer of the optical disk.
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公开(公告)号：JPH09251669A
公开(公告)日：1997-09-22
申请号：JP4903497
申请日：1997-03-04
Applicant: SONY CORP
Inventor： YAMAMOTO MASANOBU
Abstract: PROBLEM TO BE SOLVED: To make it possible to sufficiently obtain the modulation degree of address pit parts in spite of an optical recording medium having a sector structure. SOLUTION: Concentric or spiral pregrooves PG having phase depth of λ/(8n) are formed on the surface side where the recording layer of a transparent layer 2 is deposited and formed when the wavelength of a beam for recording and reproducing is defined as λ and the refractive index of the transparent layer 2 allowing the transmission of the beam for recording and reproducing as n, respectively. Address pits AP having the phase depth of λ/(4n) are formed in the regions held by these pregrooves PG and at the ends of respective sectors.
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公开(公告)号：JPH09180199A
公开(公告)日：1997-07-11
申请号：JP339297
申请日：1997-01-10
Applicant: SONY CORP
Inventor： ENDOU FUSAAKI , YAMAMOTO MASANOBU
Abstract: PROBLEM TO BE SOLVED: To stably obtain a regenerative signal and a wobbling signal from an optical disk. SOLUTION: A wobbled groove 2 is formed on the disk beforehand. The width w of the groove 2 is made 1/2 or above of a track pitch g, and further, is made smaller than size of a reproducing beam spot. Both side edges of the groove 2 are changed at the same phase. The information is recorded on the recording film 3 of the bottom surface of the groove 2. The information is reproduced from a sum signal of a detector divided in the radial direction of the disk, and a tracking error, clock information and positional information are formed from the difference signal of the detector.
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公开(公告)号：JPH09171621A
公开(公告)日：1997-06-30
申请号：JP339397
申请日：1997-01-10
Applicant: SONY CORP
Inventor： ENDOU FUSAAKI , YAMAMOTO MASANOBU
Abstract: PROBLEM TO BE SOLVED: To provide a recording medium from which a playback signal and a wobbling signal can stably be reproduced. SOLUTION: A wobbling groove 2 is previously formed on a disk. The width (w) of this groove is >=1/2 as large as a track pitch q and smaller than the diameter of a reproduction beam spot. Information is recorded on a recording film 3 on the bottom surface of the groove 2. Further, the groove is so made wobbling that both the edges of the groove 2 are in phase with each other. The information is reproduced from the sum signal of a detector which is divided along a disk diameter and a tracking error is generated from the difference signal of this detector. Further, wobbling information on the groove 2 includes absolute time information, which is taken out of the difference signal.
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公开(公告)号：JPH08138588A
公开(公告)日：1996-05-31
申请号：JP30324894
申请日：1994-11-11
Applicant: SONY CORP
Inventor： OBOSHI TOSHIO , YAMAMOTO MASANOBU
Abstract: PURPOSE: To provide a highly reliable and high quality of light emitter by constituting a spacer for retaining the space between a light emitting face and the substrate at the back, dividing it into a base layer and a spacer part body, thereby enabling the desired mechanical strength and dimension to be kept accurately to prevent breakdown. CONSTITUTION: A base layer 28 is provided between a transparent electrode 1 and each R, G, and B of a phosphor element, and a wide base layer 8 is made for every three trios of R, G, and B, and thereon a spacer body 9 is made by stacking printing to constitute a spacer 10, and a fluorescent face panel 14 and a rear panel 16 equipped with an electrode structure 15 are kept at a specified interval. This way, the base layer 8 is made wider than the spacer body 9 to prevent the collapse, and also the height of the spacer can be adjusted into specified height by the number of applications in layers, according to the distance between the panels 14 and 16, and the dimension of the interval can be maintained accurately.
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Patent Agency Ranking
公开(公告)号：JPH07195718A
公开(公告)日：1995-08-01
申请号：JP35010393
申请日：1993-12-30
Applicant: SONY CORP
Inventor： YAMAMOTO MASANOBU , NAGANUMA TORU , NANBARA TORU , AIHARA TAKASHI
Abstract: PURPOSE:To stabilize printing quality as compared with conventional one in a printer. CONSTITUTION:Tension adjusting mechanisms 33, 34 are provided between a cylindrical drum 10 and the supply device 31 of an ink ribbon 3. The tension of the ink ribbon 3 pressed to the cylindrical drum 10 can be kept constant by those tension adjusting mechanisms 33, 34. By this constitution, the friction force between the ink ribbon 3 and image receiving paper 4 is stabilized almost constant. As a result, shift becomes hard to generate between the ink ribbon 3 and the image receiving paper 4 and printing quality is stabilized.
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公开(公告)号：JPH06138839A
公开(公告)日：1994-05-20
申请号：JP28787792
申请日：1992-10-26
Applicant: SONY CORP
Inventor： YAMAMOTO MASANOBU , AKIMOTO OSAMU , SEKIYA MITSUNOBU
Abstract: PURPOSE:To obtain the easy-to-see display device which is conveniently carried, improved in display quality and has no miswritten chinese characters similarly to pocketbooks printed on paper by specifying the pixel size or pixel pitch of characters displayed on a 1st and a 2nd display screen. CONSTITUTION:The left and right flanks of 1st and 2nd casings 31 and 32 are made to abut on each other; while the 1st casing 31 and 2nd casing 32 is closed through an internal hinge 33, 1st and 2nd LCD panels 24L and 24R are put opposite one over the other, but when opened, the 1st and 2nd LCD panels 24L and 24R are spread at 180 deg. and arranged successively like an ordinary book is opened. The pixel pitch 2 or the size of pixels 1 of the 1st and 2nd display screens 24L and 24R of the 1st and 2nd display parts 31 and 32 is set to
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公开(公告)号：JPH0684742A
公开(公告)日：1994-03-25
申请号：JP25353792
申请日：1992-08-31
Applicant: SONY CORP
Inventor： YAMAMOTO MASANOBU , IWAI JUNICHI
IPC: H01S3/101 , H01L21/027
Abstract: PURPOSE:To expose the entire surface of a photoresist film having a large area to a laser beam at a high speed with high reproducibility by plotting a recording pattern in strip-like exposing areas selected by step-feeding exposing areas in the Y-axis direction by continuously feeding the laser beam in the X-axis direction and repeating the stepping feeding of the exposing areas and continuous feeding of the laser beam. CONSTITUTION:Strip-like exposing areas Z1, Z2, etc., decided by the inside width of the visual field of an objective lens 3 are successively selected on a photoresist film 2 on a glass substrate 1 by step-feeding exposing areas in the Y-axis direction. On the other hand, a recording pattern is plotted in the selected areas Z1, Z2, etc., by deflecting an intensity-modulated laser beam Lr by a fixed scanning width in the Y-axis direction and, at the same time, continuously feeding the laser beam Lr. By repeating the stepping feeding in the Y-axis direction and continuous feeding in the X-axis direction, the recording pattern is plotted on the photoresist film 2. Therefore, a pattern having a large area can be plotted on the film 2 and the film 2 can be exposed to the laser beam Lr at a high speed with high reproducibility.
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公开(公告)号：JPH0676338A
公开(公告)日：1994-03-18
申请号：JP25353692
申请日：1992-08-31
Applicant: SONY CORP
Inventor： YAMAMOTO MASANOBU
IPC: G11B7/00 , G11B7/0045 , G11B7/125
Abstract: PURPOSE:To provide a high precision plotting regardless of the kinds of laser beams and impressed signals by providing an electro-optical modulator which intensitymodulates a laser beam based on an impressed signal electrical field and an acoustooptical modulatior which intensity-modulates the output of the electrooptical modulator. CONSTITUTION:A laser beam L emitted from a laser light source 1 is intensitymodulated by an electro-optical modulator(EOM) 2 based on a direct current voltage V supplied to the EOM 2. At that time, the EOM 2 is feedback- controlled so as to make the optical output of the laser beam L constant by a feedback system 14 and thus, the output of the laser beam L, which passes the EOM 2, is stabilized. The laser beam L passed the EOM 2 is intensity- modulated by an acoustooptical modulator(AOM) 3 based on ultrasonic waves W supplied to the AOM 3. Thus, this optical recording device plots recording patterns on a photoresist film 8 with a high precision regardless of the kinds of the laser light source 1 and the kinds of impressed signals.
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公开(公告)号：JPH0531219B2
公开(公告)日：1993-05-12
申请号：JP8212282
申请日：1982-05-15
Applicant: SONY CORP
Inventor： YAMAMOTO MASANOBU
IPC: G11B7/125 , G11B7/135 , G11B7/1398
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