公开(公告)号：ID25700A

公开(公告)日：2000-11-02

申请号：ID20000351

申请日：2000-04-27

Applicant: SONY CORP

Inventor： KONDO MASAMICHI ,  MIKAMI TETSUO ,  NISHIDA NORIO

IPC: G11B7/126 ,  G11B7/00 ,  G11B7/0037 ,  G11B7/0045 ,  G11B7/125 ,  G11B19/04

Abstract: There is provided a disk drive unit which is capable of making control corresponding to contaminant and defect by discriminating the contaminant (dust, scratch) on the disk surface from the defect on the recording plane. In a pull-in signal PI corresponding to reflected light from a disk, a defect detecting signal corresponding to a signal whose level change is relatively quick corresponding to the defect of the recording plane and a contaminant detecting signal which corresponds to a signal whose level change is relatively slow corresponding to the contaminant on the disk surface are generated. When the defect detecting signal is at low level for example, a system controller retries a recording operation or increases laser light when the contaminant detecting signal is at low level. A quantity of output light of a laser diode is controlled so that a product of output light of a laser diode and reflected light from the disk amounts to a predetermined level.

公开(公告)号：DE69418508D1

公开(公告)日：1999-06-24

申请号：DE69418508

申请日：1994-02-24

Applicant: SONY CORP

Inventor： KONDO MASAMICHI

IPC: G11B19/28 ,  G11B7/0037 ,  G11B11/105 ,  G11B19/24 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/00 ,  G11B27/034 ,  G11B27/10 ,  G11B27/30 ,  G11B27/32 ,  G11B7/00 ,  G11B11/10

公开(公告)号：DE69418508T2

公开(公告)日：1999-09-16

申请号：DE69418508

申请日：1994-02-24

Applicant: SONY CORP

Inventor： KONDO MASAMICHI

IPC: G11B19/28 ,  G11B7/0037 ,  G11B11/105 ,  G11B19/24 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/00 ,  G11B27/034 ,  G11B27/10 ,  G11B27/30 ,  G11B27/32 ,  G11B7/00 ,  G11B11/10

公开(公告)号：JPH08111030A

公开(公告)日：1996-04-30

申请号：JP24598694

申请日：1994-10-12

Applicant: SONY CORP

Inventor： KONDO MASAMICHI

IPC: G11B7/085 ,  G11B7/095

Abstract: PURPOSE: To prevent destruction of the recorded data even when a track excepting a target track is irradiated with a beam, by switching output of a laser resonator to reproducing use when an off-track due to external impact is detected at a recording time. CONSTITUTION: When a shock detection signal, that is, 'H' at the time when the off-track due to the external impact occurs is supplied from a shock detection circuit through a terminal 70 when a signal is recorded, a transistor Tr1 is turned on. Thus, a voltage value of a laser power control signal is lowered to a divided voltage value by resistors R22, R21, and an APC circuit 73 makes laser power of a laser diode LD reproducing power based on that. That is, since the power of the laser diode LD is switched from recording use to the reproducing use when the off-track due to the external impact occurs at the recording time in a laser drive circuit, the destruction of information already written on other track close to the target track is prevented in the optical disk device.

公开(公告)号：JPH05290400A

公开(公告)日：1993-11-05

申请号：JP9303092

申请日：1992-04-13

Applicant: SONY CORP

Inventor： WACHI SHIGEAKI ,  NAKAMURA MASANOBU ,  KONDO MASAMICHI

IPC: G11B7/085 ,  G11B7/125

Abstract: PURPOSE:To stabilize focus setting without issuing the switching signal to a focusing servo by controlling a focusing error signal shutting out the light source of an optical system when an objective lens approaches to an optical disk surface (focus setting. CONSTITUTION:A focusing actuator 52 is driven by a setting driving signal S1 and an objective lens 53 mounted on the actuator 52 is driven so as to be approach to or separated from the surface of an optical disk 50. Focus setting action is executed by means of a focusing error signal SER1. When the lens 53 approaches to the surface of the disk 50, an emitting laser source 55 of the optical system 54 is shut out by the actuator 52 and when the lens 53 is separated from the surface of the dusk 50, the laser source 55 emits beams. Thus, at the time of falling of the saw-tooth wave of the driving signal S1, i.e., in the course in which the lens 53 approaches to the surface of the disk 50 the laser source 55 is turned off. In the meantime, focus setting action is executed and the state of the focusing servo is made stable.

公开(公告)号：JPH05231819A

公开(公告)日：1993-09-07

申请号：JP3324292

申请日：1992-02-20

Applicant: SONY CORP

Inventor： KONDO MASAMICHI

IPC: G01B11/00 ,  G01B11/14 ,  G01C3/06 ,  G11B11/10 ,  G11B11/105 ,  G11B21/21

Abstract: PURPOSE:To obtain a highly accurate distance signal which is not affected by a part where the reflectance, etc., is different from that at its surrounding area or a slope even when the part or slope exists on the surface of an object to be measured. CONSTITUTION:Light receiving elements 2A and 2B are arranged on a sensor substrate 1 at a prescribed interval. An optical reflecting plate 3 is erected between the elements 2A and 2B. A light emitting element 4 is provided in a titled state on the opposite side of the plate 3 with respect to the element 2A. The orientation of the element 4 is set so that the light from the element 4 can irradiate the reflecting surface of an object 5 to be measured and its vicinity intersecting a plane including the plate 3 when the object 5 is in the extent of measuring distances. A distance signal is formed by performing subtraction on the output signals of the elements 2A and 2B. Since reflected light rays from nearly same positions of the object 5 are made incident to the elements 2A and 2B, the light balance between the light rays made incident to the elements 2A and 2B is not lost and a highly accurate distance signal can be obtained even when a part where the reflectance is different from that at its surrounding area or a slope exists on the surface of the object 5.

公开(公告)号：JP2000311373A

公开(公告)日：2000-11-07

申请号：JP12287499

申请日：1999-04-28

Applicant: SONY CORP

Inventor： KONDO MASAMICHI ,  MIKAMI TATSURO ,  NISHIDA NORIO

IPC: G11B7/126 ,  G11B7/00 ,  G11B7/0037 ,  G11B7/0045 ,  G11B7/125 ,  G11B19/04 ,  G11B19/02

Abstract: PROBLEM TO BE SOLVED: To perform the control made to correspond to dust or a defect by discriminating dust (a mote, a scratch) on the surface of a disk from the defect on a recording surface. SOLUTION: The disk drive generates a defect detection signal (e) which is made to correspond to a signal whose level change is relatively fast by being made to correspond to the defect on a recording surface and a dust detection signal (g) which is made to correspond to a signal whose level change is relatively slow by being made to correspond to the dust on the surface of a disk in the pull-in signal PI (a) made to correspond to the reflected light of the disk. Then, the system controller of the device performs the retry of a recording operation when the defect detection signal (e) is, for example, a low level and performs a control increasing a laser beam when the dust detection signal (g) is a low level. Moreover, the controller controls the outgoing light quantity of a laser diode so that the product of the outgoing light of the diode and the reflected light from the disk becomes a prescribed level.

公开(公告)号：JPH075799A

公开(公告)日：1995-01-10

申请号：JP14650493

申请日：1993-06-17

Applicant: SONY CORP

Inventor： KONDO MASAMICHI ,  OGAWA MASATAKA

IPC: G06F3/16 ,  G09B5/04 ,  G10L15/00

Abstract: PURPOSE:To provide the voice information processor capable of obtaining a recognition output from a voice input with a simple constitution. CONSTITUTION:The voice compression coding data M1 obtd. by a voice information recording and reproducing device 51 and the standard pattern read out of a standard pattern memory circuit 3 are compared and matching distances are calculated by a distance calculating means 4. The standard pattern of the shortest matching distance is outputted as the recognition output R1 in accordance with the calculated results of the matching distances. An existing device, such as minidisk recording and reproducing device, is usable for this voice information recording and reproducing device 51, in this case, and, therefore, the device to obtain the recognition output R1 from the voice input S1 is easily constituted. A language learning machine by which the recognition output R1 is obtd. only when a learner makes pronunciation as good as his voice input S1 exceeds a standard distance RD to teacher's pronunciation, is buildable if the words, sentences, etc., by the pronunciation of the language teacher are formed as the standard patterns.

公开(公告)号：JPH064877A

公开(公告)日：1994-01-14

申请号：JP18178992

申请日：1992-06-16

Applicant: SONY CORP

Inventor： KONDO MASAMICHI ,  WACHI SHIGEAKI

IPC: G11B7/085

Abstract: PURPOSE:To accurately measure a distance between an optical disk and an overwrite magnetic head and to improve tolerance to a skew. CONSTITUTION:At least two electrodes 6b are provided which are placed on the same position or nearly the same position opposed to the conductive surface 3a of the optical disk 3, and a first electrode 6b1 is maintained to reference potential and by a second electrode 6b2, the potential indicating parallel capacitance to the reference potential is detected, and the distance between the conductive surface 3a of the optical disk 3 and the electrode is detected from parallel synthesized capacitance (CG1+CG2) between the first electrode and the second electrode. Further, an optical head is position-controlled based on the distance (d) between the conductive surface 3a of the optical disk 3 and the electrode detected by a distance detector.

公开(公告)号：JPH0720894A

公开(公告)日：1995-01-24

申请号：JP14650993

申请日：1993-06-17

Applicant: SONY CORP

Inventor： KONDO MASAMICHI ,  OGAWA MASATAKA

IPC: G09B5/04 ,  G06F17/28 ,  G10L13/06 ,  G10L19/02 ,  G10L5/04 ,  G10L7/04

Abstract: PURPOSE:To provide a voice information processing device in which characteristic voice outputs are easily obtained from voice inputs. CONSTITUTION:Male voice piece waveform data EW1 are extracted from voice compressed coded data M1 against a male voice input S1 by a feature extracting circuit 55 and are stored in a piece waveform data storage circuit 74 as piece waveform data EW2. When the data are used, a recognition output R1 against a female voice input S1 is voice-synthesized using the data EW2 by a voice data synthesizing circuit 67 and a synthesized output SY is made a voice output S2 by a voice compression decoding circuit 20. Since a conventional device is used for a voice information recording and reproducing device 51, a device is easily constituted to obtain a featured voice output S2 from the voice input S1. If the above scheme is applied to a telephone equipment, the voice input S1 of a female, who picks up a handset, is made the voice output S2 by a male voice and is transmitted to a receiving side.