公开(公告)号：DE3264159D1

公开(公告)日：1985-07-25

申请号：DE3264159

申请日：1982-01-27

Applicant: SONY CORP

Inventor： NODA TOYOKAZU ,  OHKI HIROSHI

IPC: G11B7/08 ,  G11B7/09 ,  G11B7/12

Abstract: In an optical disc player or other apparatus in which a light beam is directed through an objective lens to be focused thereby at a record medium surface for optically reading information recorded in a track on such surface, the lens is mounted in one end of a tubular mounting member through which the path of the light beam extends longitudinally, a support member extends about the tubular mounting member, a leaf spring member, preferably of amorphous metal, extends between the other end of the tubular mounting member and the support member to permit longitudinal movements of the mounting member for correcting focusing errors, and further to permit swinging movements of the mounting member about a center located at such other end for correcting tracking and/or time base errors, and a body of substantially bulky elastic material, such as, polyurethane foam, is interposed between the support member and the tubular mounting member at a location along the latter intermediate its ends for further supporting the tubular mounting member in respect to its longitudinal and swinging movements relative to the support member.

公开(公告)号：JP2003346345A

公开(公告)日：2003-12-05

申请号：JP2002150395

申请日：2002-05-24

Applicant: Sony Corp ,  ソニー株式会社

Inventor： NODA TOYOKAZU ,  MIYOSHI YOSHIRO ,  NAGANO NOBUTAKA

IPC: G11B20/10 ,  G11B7/005

Abstract: PROBLEM TO BE SOLVED: To improve an S/N (signal-to-noise) ratio of a UDI signal using a simple configuration.
SOLUTION: The UDI to be overwritten on an optical disk, in which a synchronization signal and a subcode are set in a master prepit, is read. An RF signal from a disk-reproducing part (not shown) is inputted and processes, such as amplification, offset compensation, and gain adjustment are performed at an amplifier circuit 10. The result is inputted to a peak-hold circuit 20, and an envelope detection is performed. To the detection signal are performed processes, such as amplification and offset compensation at an amplifier circuit 30 and outputted as a UDI signal. Furthermore, in order to prevent the detection errors of the UDI caused by a level gap between a synchronization signal (subcode signal) and an RF signal based on a 3T pattern, the level gap between them is suppressed, by amplifying a 3T signal by a high-pass filter and adding it to the original RF signal and performs envelope detection.
COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：使用简单的配置来提高UDI信号的S / N（信噪比）比。 解决方案：读取在主预制凹坑中设置同步信号和子代码的光盘上被覆盖的UDI。 输入来自盘再现部分（未示出）的RF信号，并在放大器电路10上执行诸如放大，偏移补偿和增益调整的处理。结果被输入到峰值保持电路20，并且 进行包络检测。 对检测信号进行放大电路30的放大和偏移补偿等处理，作为UDI信号输出。 此外，为了防止基于3T模式的同步信号（子码信号）和RF信号之间的电平间隙引起的UDI的检测误差，通过将3T信号放大到3T信号来抑制它们之间的电平间隙， 高通滤波器并将其添加到原始RF信号并执行包络检测。 版权所有（C）2004，JPO

公开(公告)号：JPH0793759A

公开(公告)日：1995-04-07

申请号：JP26293593

申请日：1993-09-27

Applicant: SONY CORP

Inventor： NODA TOYOKAZU

IPC: G11B11/10 ,  G11B7/08 ,  G11B7/12 ,  G11B7/125 ,  G11B11/105

Abstract: PURPOSE:To obtain an optical pickup whose assembling cost is reduced, whose number of parts is reduced and which reduces unnecessary radiated noise. CONSTITUTION:In the optical pickup used for reproducing and recording the information of an information recording medium, plural connection terminals 70, 72 and 74 from a high-frequency circuit substrate 60 are arranged through a shield body 50 for the substrate 60. Then, the terminals 70-74 are passed through one common capacitor body 90 being as a filter for the unnecessary noise radiated from the substrate 60.

公开(公告)号：JPH0562219A

公开(公告)日：1993-03-12

申请号：JP24425791

申请日：1991-08-30

Applicant: SONY CORP

Inventor： NODA TOYOKAZU ,  ANDO AKIRA

IPC: G11B7/09

Abstract: PURPOSE:To enlarge a jitter margin to a defocusing quantity by equalizing the regenerative RF signal output of an optical head. CONSTITUTION:An equalizer 12 is provided on the output side of the optical head 3 reproducing the recording data of an optical disk 1, the frequency characteristic of the equalizer 12 is set so as to raise the high band frequency of the regenerative RF signal. An optical disk device is controlled with a focus so as to make a tracking level the best, though a point where the jitter margin is minimum is deviated by astigmatism caused by it, an MTF characteristic in appearance is improved by the above-mentioned equalizer 12 and the best point of tracking is coincident with a jitter bottom point.

公开(公告)号：JPH0547061A

公开(公告)日：1993-02-26

申请号：JP22373891

申请日：1991-08-09

Applicant: SONY CORP

Inventor： NODA TOYOKAZU

IPC: G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To provide a device for adjusting the central positions of a magnetic head and an optical head for recording data on a magneto-optical disk. CONSTITUTION:A chip member 25 is attached to the tip of an arm member 23 and a first sensor 25A and a second sensor 25B are formed on both front side and back of the chip member. The first sensor 25A is a Hall element which senses a magnetic field, the second sensor 25B is a photoelectric element and they are arranged so that their centers are made coincident with each other. The chip member 25 is arranged on the intermediate position between a magnetic head 12 and an optical head 11, thus, an adjustment in operated for making the centers of the optical head and the magnetic head coincident with each other with highly accuracy.

公开(公告)号：JP2003217206A

公开(公告)日：2003-07-31

申请号：JP2002014256

申请日：2002-01-23

Applicant: SONY CORP

Inventor： NODA TOYOKAZU ,  IHASHI TAKAO

IPC: G11B17/051 ,  G11B17/04

Abstract: PROBLEM TO BE SOLVED: To form a drive capable of loading/ejecting a card-like and disciform optical disks. SOLUTION: The opening shape of an inserting and removing port 60 is formed by integrating respective opening portions (inserting portions) of an inserting and removing port 60a for inserting and removing a card type CD 46a and 8-cm CD 46b and an inserting and removing port 60b for inserting and removing a 12-cm CD 46c. The opening width B1 of the inserting and removing port 60a is slightly wider than the width, 85 mm, of the long side portion of the card type CD 46a. The opening width B2 of the inserting and removing port 60b for the 12-cm CD 46c is slightly wider than the maximum width, 120 mm, of the 12-cm CD 46c. In the interior of the drive, a pair of transport guides 62a, 62b for guiding a transport system path used in transporting a recording medium 46 as far as a prescribed rotation position are provided on a housing (not shown) in such a way that the recording medium 46 is sandwiched by the opposite sides of the transport system path. The transport guides 62a, 62b constantly retain the directions of four sides in transporting the card type CD 46a. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003217147A

公开(公告)日：2003-07-31

申请号：JP2002015093

申请日：2002-01-24

Applicant: SONY CORP

Inventor： NODA TOYOKAZU

IPC: G11B7/09 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device that realize compatibility with an optical disk having a different track pitch. SOLUTION: A plunger 120 is fixed on a feed gear 102. The tip end of a plunger pin 120a is engaged with a metallic fixture 124. Between the plunger 120 body and the metallic fixture 124, a compression spring 122 is installed around the plunger pin 120a as the center. When driving force for pulling the plunger pin 120a is imparted to the plunger 120, an angle adjusting pin 104 is brought to a 104a position in an angle adjusting hole 106, with the adjusting angle set at α. When no driving force is imparted to the plunger 120, drawing force is actuated by the compression spring 122, bringing the angle adjusting pin 104 to a 104b position in the angle adjusting hole 106, with the adjusting angle set at β. In other words, a side spot position can be controlled by pulling or not pulling the plunger pin 120a in accordance with the track pitch of an optical disk PD. COPYRIGHT: (C)2003,JPO

公开(公告)号：JPH11176017A

公开(公告)日：1999-07-02

申请号：JP34299097

申请日：1997-12-12

Applicant: SONY CORP

Inventor： NODA TOYOKAZU

IPC: G11B7/135 ,  G11B7/20

Abstract: PROBLEM TO BE SOLVED: To obtain a device constituting the whole in a thin type and reducing the cost by fitting a light emitting element leading a light beam outgoing from a light source housed in a case having a recessed part toward an optical disk, converging the light beam on the signal recording surface of the optical disk, receiving the return light beam and emitting the light beam in parallel to the surface of a semiconductor substrate on the semiconductor substrate. SOLUTION: The whole of a light receiving/emitting element is housed in a ceramic package 21e whose upper end is opened and its opening part is closed by a lid 21f consisting of a transparent material such as transparent glass, etc. Further, the ceramic package 21e is provided with a window part 21g on its side surface so as to pass the light beam horizontal emitted from a laser diode chip 21c through. This window part 21g is closed by a prolonged part extending in the vertical direction of the lid 21f. Further, the window part 21g is provided with a hologram element 21h as a light separation means.

公开(公告)号：JPH1083554A

公开(公告)日：1998-03-31

申请号：JP24017796

申请日：1996-09-11

Applicant: SONY CORP

Inventor： NODA TOYOKAZU ,  IKEDA NAOTO ,  KUBO TAKESHI

IPC: G11B7/125 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide a small-sized and light pickup with simple constitution by making a laser beam center coincide with a mechanical center by a specified procedure in assembly of an optical pickup. SOLUTION: A laser coupler assembly(LC) 11, a collimate lens 14 and a prism mirror 15 are arranged on a base substrate 20, and a biaxial assembly 29 is temporarily fixed. In this case, the laser diode of the LC 11 is light emitted, and the position of the biaxial assembly 29 is adjusted and fixed so that the light intensity center of the laser beam coincides with an objective lens 16 center. A screw is inserted into an attaching tap 27 from an attaching hole 28, and a shell cover 22 is temporarily fixed to the base substrate 20. Mechanical marks are provided on the outer periphery of a window part 23, and a central point of a mechanical system is displayed at the intersected point between straight lines linking the marks. This central point is made to coincide with the center of the objective lens 16, and the shell cover 22 is fixed to the base substrate 22.

公开(公告)号：JPH06342528A

公开(公告)日：1994-12-13

申请号：JP26195893

申请日：1993-09-24

Applicant: SONY CORP

Inventor： NODA TOYOKAZU ,  KASHIWAGI HIROSHI

IPC: G11B7/135

Abstract: PURPOSE:To simplify the constitution and to facilitate the assemblage by fitting optical elements to one base and providing a collimator lens inserting hole. CONSTITUTION:The optical elements constituting the pickup for an optical disk, such as a light source 11, an objective lens, a beam splitter 15, a collimator lens 16 and a photodetector 19, etc., for making light of the light source irradiate the optical disk 22 and receiving its reflected light are fitted to one base member 20. Moreover, the lens 16 is inserted via the inserting hole 21b extending in the vertical direction to an optical axis from a fixed part 21 in the member 20, and is assembled. By this method, the constitution of the pickup for the optical disk is simplified, and also its assemblage is facilitated.