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31. 发明专利

JPH05250721A 失效
公开(公告)号：JPH05250721A
公开(公告)日：1993-09-28
申请号：JP5081992
申请日：1992-03-09
申请人： SONY CORP
发明人： OSUE TADASHI , KABAYA YOSHITERU , KUMAI SATOSHI , NARAHARA TATSUYA , NAKAO TAKASHI
IPC分类号： G11B7/00 , G11B7/003 , G11B7/135
摘要： PURPOSE:To obtain an optical recorder/reproducer having simplified constitution and additionally provided with verify function. CONSTITUTION:A light beam LA1 from a light source is introduced to a beam splitter 10 in a rotary drum 8 where it is branched to two subbeams which finally advance on optical paths, shifted by 180 deg. from each other, and focused on an optical tape 15. When one light beam LA2 is used for recording data, the other light beam LA3 is used for verification. A photodetector 22 detects reproduced data at the time of reproduction and verification.

32. 发明专利

JPH03113756A MAGNETO-OPTICAL RECORDING AND REPRODUCING HEAD 失效
公开(公告)号：JPH03113756A
公开(公告)日：1991-05-15
申请号：JP24647489
申请日：1989-09-25
申请人： SONY CORP
发明人： KABAYA YOSHITERU , NARAHARA TATSUYA , NAKAO TAKASHI , MIYOSHI HIROSHI
IPC分类号： G11B11/10 , G11B11/105
摘要： PURPOSE:To reduce the size and weight of the small magneto-optical recording and reproducing head and to save the electric power thereof by constituting the head in such a manner that a coil for external magnetic fields adopted to impress the external magnetic fields to an magneto-optical recording medium can be moved integrally with an objective lens. CONSTITUTION:The coil 2 for external magnetic fields is provided at the position on the immediate outer side of the objective lens 1 of a lens barrel 3 mounted with the objective lens 1. The concentrical impression of the external magnetic fields to the position where the lens 1 focuses is possible in this way. The lens barrel 3 is supported to a movable part 4 of a focus control driving mechanism. The coil 2 is integrated with the lens 1 by such constitution and is the objective of focus servo. The magneto-optical recording and reproducing head which is controlled to always the constant distance with the recording surface of the recording carrier is obtd. The magneto-optical recording and reproducing head which is small in size and weight and consumes less electric power is obtd. in this way.

33. 发明专利

JPH03100921A OPTICAL TAPE RECORDING SYSTEM USING MULTITRACK 失效
公开(公告)号：JPH03100921A
公开(公告)日：1991-04-25
申请号：JP23560689
申请日：1989-09-13
申请人： SONY CORP
发明人： NARAHARA TATSUYA , KUMAI SATOSHI , NAKAO TAKASHI , OSATO KIYOSHI
IPC分类号： G11B7/00 , G11B7/003 , G11B7/09
摘要： PURPOSE:To make a pitch fixed between tracks to be recorded by various heads by irradiating a multispot and executing recording while executing tracking control with the already recorded track as a reference. CONSTITUTION:At first, a tape is scanned by an A head and when tracks a11-a14 to be shown by real lines are formed by spots sa1-Sa4 a head B next executes scanning so that the track can be formed between the tracks a14 and a13 by a spot Sb1 in an end part. Namely, since an interval between the tracks a13 and a14 is defined as a guide interval, side spots Ss and Ss of the spot Sb1 are irradiated so as to be spread over the tracks a14 and a13 and a tracking error signal is obtained by the reflected light. Then, tracking servo is loaded. Since spots Sb2-Sb4 are outputted from the same optical system as the spot Sb1, the positions are controlled in the same way as the spot Sb1. Tracks b14 and b13 are irradiated by the scan of the B head, and the recording is executed while executing the tracking control by the reflected light from the side spots Ss and Ss of the spot Sa1.

34. 发明专利

JPH07301862A MOTION PICTURE FILM TRAVELING DEVICE 失效
公开(公告)号：JPH07301862A
公开(公告)日：1995-11-14
申请号：JP11462794
申请日：1994-04-28
申请人： SONY CORP
发明人： MANOU KIYOSHI , WATANABE TOSHIO , NAKAO TAKASHI
IPC分类号： G03B21/44 , G03B1/42
摘要： PURPOSE:To propose a motion picture film traveling device capable of drastically reducing the reproducing error of a signal recorded in an area other than the picture recording area of motion picture film. CONSTITUTION:This device is provided with a reproducing part reproducing information optically recorded in the specified area of the motion picture film 41 based on light transmitted through the film 41 by irradiating the specified area of the film 41 with the light; and a shake preventing means 80 provided in the reproducing part and preventing the film 41 from being shaken in the thickness direction of the film 41 at the time of traveling by interposing an area between traveling synchornizing holes plurally formed in the longitudinal direction of the film 41 at the end in the width direction of the film 41 or only the area outside the traveling synchronizing hole of the film 41 from both sides of the film 41. Thus, the reproducing error of the signal recorded in the area other than the picture recording area of the motion picture film is drastically reduced by this device.

35. 发明专利

JPH075797A COMPUTER HOLOGRAM RECORDING DEVICE AND REPRODUCING DEVICE 失效
公开(公告)号：JPH075797A
公开(公告)日：1995-01-10
申请号：JP14764793
申请日：1993-06-18
申请人： SONY CORP
发明人： NAKAO TAKASHI , OSUE TADASHI
IPC分类号： G03H1/08
摘要： PURPOSE:To provide the recording device capable of recording and forming many computer holograms and realizing long-time recording of animation pictures. CONSTITUTION:A wave front information recording section 1 records the wave front information of an object. A computer 2 computes and synthesizes the holograms from the wave front information of the object and outputs two-dimensional hologram information. An information order conversion and recording control section 4 converts the two-dimensional hologram information once stored in a buffer 3 into one-dimensional hologram information and subjects the one- dimensional hologram information to the control for recording. A scanning system section 5 converts the one-dimensional information into a laser beam in accordance with the timing of the synchronizing signal supplied from this information order conversion and recording control section 4 and records the one-dimensional hologram information on a tape-shaped optical recording medium 6.

36. 发明专利

JPH05250720A 失效
公开(公告)号：JPH05250720A
公开(公告)日：1993-09-28
申请号：JP5080892
申请日：1992-03-09
申请人： SONY CORP
发明人： OSUE TADASHI , KABAYA YOSHITERU , KUMAI SATOSHI , NARAHARA TATSUYA , NAKAO TAKASHI
IPC分类号： G11B7/00 , G11B7/003 , G11B7/135
摘要： PURPOSE:To obtain an optical recorder/reproducer having simplified constitution and additionally provided with verify function. CONSTITUTION:Laser beam from a laser light source is modulated based on a data to produce a light beam for recording/reproducing the data onto an optical tape. A multi-laser light source emitting four light beams is employed as the laser light source wherein two unit laser light sources are used for data and arbitrary number, two in the embodiment, of remaining unit laser light sources are used for verify. Tracks Ta(T1a, T2a), Tb(T2a, T2b) formed by light beams Ba, Bb from the unit laser light sources for data are scanned by verifying light beams Bc, Bd thus performing read after write operation.

37. 发明专利

JPH0581793A DISK REPRODUCING OR RECORDING DEVICE 失效
公开(公告)号：JPH0581793A
公开(公告)日：1993-04-02
申请号：JP33398891
申请日：1991-11-22
申请人： SONY CORP
发明人： OKA MICHIO , NAKAO TAKASHI , AOKI NOBUYUKI , KUMAI YUJI
IPC分类号： G11B7/085 , G11B21/02 , G11B25/04
摘要： PURPOSE:To realize a continuous reproduction for a long time and a high-speed access for plural disks with one pick-up. CONSTITUTION:An optical pick up device 11 is arranged on a position offset from the center of each disk and moved against disks CD1 to CDn placed on spindle motors SP1 to SPn, connecting data between each disk is stored in a memory 12 and continuously reproduced.

38. 发明专利

JPH04167257A RECORDER/REPRODUCER 失效
公开(公告)号：JPH04167257A
公开(公告)日：1992-06-15
申请号：JP29293890
申请日：1990-10-30
申请人： SONY CORP
发明人： KABAYA YOSHITERU , NAKAO TAKASHI , OSUE TADASHI
IPC分类号： G11B15/61
摘要： PURPOSE:To increase recording capacity per recording track and to simplify a system configuration by guiding a tapelike recording medium by a guide member layer having a circular-arc-like inner periphery and provided externally opposed to a drum device. CONSTITUTION:A tapelike recording medium 12 is wound obliquely to a longitudinal direction on a drum device 13 for placing a recording or reproducing head, and transported along the drum surface 13A of the device 13 to record or reproduce information on the medium 12. Here, a guide member 21 having a circular-arc-shaped inner periphery 21A of a circular shape concentrically with the surface 13A is provided out of the device 13 to guide the transportation of the medium 12 is provided. As a result, even if a winding angle is large, feeding of the tape 12 is stabilized, and hence a recording track can be formed long obliquely to the tape 12. Thus, a recording capacity per one track of the recording track can be remarkably increased, and a system configuration can be entirely simplified.

39. 发明专利

JP2002133701A METHOD FOR DETECTING OPTICAL INFORMATION, OPTICAL DEVICE FOR DETECTION AND RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JP2002133701A
公开(公告)日：2002-05-10
申请号：JP2000321364
申请日：2000-10-20
申请人： SONY CORP
发明人： NAKAO TAKASHI
IPC分类号： G11B7/09 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To accurately detect a mounting position and facilitate manufacture and adjustment of a device. SOLUTION: A beam from a laser light source 10 is made incident on a diffraction grating 12 through a collimator lens 11. Only a diffracted beam with a random plane of polarization is transmitted through a polarization beam splitter 13 and it is irradiated on a recording face of an optical disk 16 via a quarter wave length plate 14 and an objective lens 15. A beam reflected by the recording face of the optical disk 16 passes through the objective leans 15 and the quarter wave length plate 14 and it is also reflected by the polarization beam splitter 13. The reflected beam is focused by a focusing lens 17 and it is made incident on a hologram element 18 diffracting the beam and providing focus positions of ±1 order diffracted beams in fore and aft in an optical axis direction of a focus position of a 0 order diffracted beam. The diffracted beams are irradiated on a light detecting means 20 through an optical element enlarging diameters of the diffracted beams in a certain direction such as a parallel flat plate 19 provided obliquely to the optical axis direction.

40. 发明专利

JP2002074703A METHOD AND DEVICE FOR DETECTING TRACKING ERROR SIGNAL, OPTICAL PICKUP, TRACKING CONTROLLER AND OPTICAL RECORDING /REPRODUCING DEVICE 失效
公开(公告)号：JP2002074703A
公开(公告)日：2002-03-15
申请号：JP2000266172
申请日：2000-09-01
申请人： SONY CORP
发明人： ICHIMURA ISAO , YAMAMOTO KENJI , NAKAO TAKASHI
IPC分类号： G11B7/24 , G11B7/09 , G11B7/135 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To eliminate the effect of a total reflection component generating on a face where an optical disk recording medium having a rugged face and a solid immersion lens (SIL) are facing each other, in detecting a tracking error signal by means of a near field optical system using the SIL. SOLUTION: The detecting segments A-D of a quadripartite photodetector 31 for detecting servo error signals are designed to be unirradiated with the ring-shaped total reflection component. Its method, for example, is varying the magnification of a condensing lens in the prestage of a photodetector in an optical pickup, or providing a diaphragm in the prestage of the photodetector 31 to repel the total reflection component. Otherwise, a light transmitting protective layer having a refractive index larger than the effective numerical aperture of an objective lens with SIL is installed on the surface of the optical disk recording medium so that the detecting segments of the photodetector is unirradiated by eliminating the total reflection component generating on the opposing face of the optical disk recording medium and SIL.

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