Patents Represented by Attorney, Agent or Law Firm Philip M. Shaw, Jr.
  • Patent number: 5265080
    Abstract: A servo circuit for controlling an actuator provided on an optical pickup of a disc reproducing apparatus, the optical pickup optically reading out an information signal recorded on a disc is comprised of a phase compensating unit including a first phase compensator circuit whose gain characteristic and phase characteristic are set to first characteristics and a second phase compensator circuit whose gain characteristic and phase characteristic are set to second characteristics, the first and second phase compensator circuits being selectively coupled, a detecting circuit for detecting an oscillation of the actuator, and a switching circuit for switching the first and second phase compensator circuits from one to the other on the basis of an output from the detecting circuit.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: November 23, 1993
    Assignee: Sony Corporation
    Inventor: Takeo Tamura
  • Patent number: 5265083
    Abstract: A portable disc player has a casing. In the casing, there are enclosed: disc rotation driving means for rotating an optical disc; an optical head which is arranged so as to be movable in the radial direction of the optical disc; a signal processing section for executing a predetermined signal process to a signal which has been read out by the optical head; and control means for controlling the operations of the rotation driving means, the optical head, and the signal processing section on the basis of an input from an X-Y device and trigger buttons. A display unit comprising an outer cover on which an LCD display is arranged is rotatably attached to the casing.
    Type: Grant
    Filed: September 19, 1991
    Date of Patent: November 23, 1993
    Assignee: Sony Corporation
    Inventors: Toshiyuki Ishii, Takao Ihashi, Yoshisuke Kuroda, Hitoshi Nozaki
  • Patent number: 5262917
    Abstract: A shutter for disk cassette, which is made of synthetic resin and shaped into a U-form in section, is heated again on a pair of corner portions thereof in order that the shutter does not deform during its lifetime.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: November 16, 1993
    Assignee: Sony Corporation
    Inventors: Shuichi Kikuchi, Toshiro Kobayashi
  • Patent number: 5261120
    Abstract: A transmitting and receiving apparatus suitable for use as a digital cellular type mobile station. The reference reception carrier frequency and the reference transmission carrier frequency are different. Signals are transmitted and received such that an offset frequency of a received signal of an actual reception carrier frequency relative to the reference reception carrier frequency is detected and multiplied with a signal of the reference transmission carrier frequency, and the multiplied output used as the transmitted signal of an actual transmission carrier frequency which follows the actual reception carrier frequency.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: November 9, 1993
    Assignee: Sony Corporation
    Inventors: Mitsuhiro Suzuki, Takushi Kunihiro
  • Patent number: 5258970
    Abstract: A plurality of tracks comprising pits each having a diameter smaller than a beam spot diameter of a laser beam are arranged on an optical disc. By irradiating the laser beam onto the optical disc, a plurality of pits are reproduced a lump. The reflected lights from a plurality of pits on the optical disc are supplied to a plural-divided photodetector. Outputs of the plural-divided photodetector are supplied to a matrix circuit and multidimensional vectors are formed. The data recorded on the optical disc is decoded from the multidimensional vectors. A tracking area and a clock area are provided on the optical disc. A tracking control is performed by using a reproduction signal of the tracking area. The clocks are reproduced by using a reproduction signal of the clock area.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: November 2, 1993
    Assignee: Sony Corporation
    Inventor: Seiji Kobayashi
  • Patent number: 5258749
    Abstract: In a non-interlace display device, addition is performed in the level ratio of 1/4 and 3/4 at one field and in the level ratio of 3/4 and 1/4 at one field, and the display elements common in one field and other field are driven using the addition signal, thereby a good display image can be obtained without trouble due to flicker or pairing.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: November 2, 1993
    Assignee: Sony Corporation
    Inventor: Yasuyuki Endo
  • Patent number: 5253313
    Abstract: An optical guide end-fire coupling apparatus including a light source section having a condenser lens system for converging a laser beam to be incident on an optical guide, having a first light incident end facet, of an optical guide device, having a second light incident end facet, and including an actuator for finely adjusting the position of the condenser lens system with respect to an optical, i.e. a z axis of the condenser lens system, an x axis and a y axis, which axes are all orthogonal with each other and a photodetector assembly for detecting a light intensity of a return beam of a laser beam which is emitted from the light source section and reflected by the second light incident end facet on which the first light incident end facet of the optical guide is facing, and for controlling the actuator in accordance with the detected light intensity so that the position of the actuator is adjusted with respect to the x, y and z axes.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: October 12, 1993
    Assignee: Sony Corporation
    Inventor: Koichiro Kishima
  • Patent number: 5251079
    Abstract: A tracking control circuit of a rotary head type magnetic recording and reproducing apparatus. The tracking control circuit generates sampling pulses of first and second pilot signals for tracking based on a synchronization signal for tracking on a recording track, detects an envelope signal from the reproduction signal reproduced by the magnetic heads which is amplified with a predetermined gain, detects tracking error data from first and second pilot data obtained by sampling the envelope signal with the sampling pulses, detects reproduction level error data, controls the feeding speed of the magnetic tape based on the tracking error data, and controls the amplifying gain of the reproduction signal based on the reproduction level error data. As a result, deviations of reproduction levels of the magnetic heads are effectively corrected, and tracking control of the magnetic heads on the recording tracks is extremely precise.
    Type: Grant
    Filed: November 7, 1990
    Date of Patent: October 5, 1993
    Assignee: Sony Corporation
    Inventors: Makoto Yamada, Masayoshi Noguchi, Junji Ono
  • Patent number: 5250930
    Abstract: A switching apparatus for an electron device, for controlling movement of an image on a display unit, including a plurality of pushbuttons being provided on upper surfaces with directional symbols which represent upward, downward, leftward, rightward directions and random or non-linear paths of travel in which the image displayed is allowed to move. When the pushbuttons are pressed, control signals are transmitted to a control circuit of the electronic device. The pushbuttons with the symbols indicating the four directions are arranged in a cross form, while the pushbuttons with the symbols indicating random and/or non-linear paths of travel are arranged between the pushbuttons forming the cross arms. Further, the pushbuttons with the directional symbols are arranged around a center pushbutton for stopping movement of the displayed image. The pushbuttons are made of a resilient material and assembled as a single unit.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: October 5, 1993
    Assignee: Sony Corporation
    Inventors: Tatsuo Yoshida, Kazuhiko Otake
  • Patent number: 5247496
    Abstract: A magneto-optical disc recording and/or reproducing apparatus having an external magnetic field generating means for supplying an external magnetic field to a magneto-optical disc, a spacer sheet disposed relative to the magneto-optical disc at its surface side opposing to the external magnetic field generating means and a moving means for moving the external magnetic field generating means in the direction in which the external magnetic field generating means is isolated from and brought in contact with the magneto-optical disc, in which the moving means moves the external magnetic field generating means to the position at which the external magnetic field generating means comes in contact with the magneto-optical disc via the spacer sheet when an information signal is recorded on the magneto-optical disc, whereas the moving means moves the external magnetic field generating means to the position distant from the magneto-optical disc when the information signal recorded on the magneto-optical disc is reprodu
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: September 21, 1993
    Assignee: Sony Corporation
    Inventor: Wataru Yamatani
  • Patent number: 5247408
    Abstract: A disc chucking apparatus for use in an automatic disc changer for a disc player includes an arm base 28 which is vertically movable and reversible with respect to a chassis 1, and a disc base 34 fixedly mounted on the arm member. The disc base 34 has a central insert member 34a for being inserted in the central hole of a disc and a disc support surface 34b for abutting engagement with a peripheral edge of the central hole of the disc. A rod 35 extends axially slidably through the central insert member 34a, and a pantographic link mechanism 38 is operatively coupled between the disc base 34 and an end of the rod 35, and collapsible and extensible in response to sliding movement of the rod 35. When the arm base 28 is vertically moved in response to sliding movement of the rod 35, with the presser assembly 38 extended, the central insert member 34a and the presser assembly 38 are inserted into the central hole of the disc.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: September 21, 1993
    Assignee: Sony Corporation
    Inventors: Yasuo Osada, Fumio Horie
  • Patent number: 5247451
    Abstract: A method for generating data defining a tool path for a numerically controlled machine is designed for generating machining tool path data without establishing offset plane data so that the machining tool path depth data can be established for discontinuous, surfaced, offset planes which might otherwise cause interference in the tool path. The method includes the steps of forming a plurality of patches defining a three-dimensional plane to be machined, subdividing each patch into a predetermined number of segments as divided by a plurality of dividing points, with the number of segments being variable depending upon the distance between adjacent dividing points so that the distance is maintained to be smaller than the machining area of a machine tool. The machining depth at each dividing point within the tool path is derived with respect to the maximum height position at which the machining tool comes into contact with the dividing point.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: September 21, 1993
    Assignee: Sony Corporation
    Inventors: Jun Sawamura, Tetsuzo Kuragano
  • Patent number: 5245618
    Abstract: A laser beam generating apparatus which is easy to manufacture and simple in adjusting operation. The laser beam generating apparatus comprises a light source having a narrow active layer for generating pumping laser beam, a laser medium for receiving the pumping laser beam to form a heat lens therein and generate a fundamental wave laser beam, a non-linear optical crystal element having a face inclined with respect to an optical axis of the fundamental wave laser beam for receiving the fundamental wave laser beam to generate secondary harmonic laser beam, a quarter wavelength plate for suppressing coupling between two polarization modes of the fundamental wave laser beam, and a pair of planar reflecting means for reflecting the fundamental wave laser beam back into the laser medium. The laser medium, non-linear optical crystal element, quarter length plate and planar reflecting means cooperate to constitute a light resonator.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: September 14, 1993
    Assignee: Sony Corporation
    Inventors: Hisashi Masuda, Yushi Kaneda
  • Patent number: 5245430
    Abstract: A timebase corrector is provided, in which an input video signal is written in a timebase error correcting memory on the basis of a clock pulse synchronized with a synchronizing signal in the input video signal and the signal written in the time base error correcting memory is read out on the basis of a read clock pulse synchronized with a reference signal to thereby correct a timebase error. In this timebase corrector, when a drop-out of a first vertical synchronizing signal in the input video signal occurs, the write of the input video signal in the timebase error correcting memory is inhibited, and a timebase error is corrected by the input video signal already written in the memory until a second vertical synchronizing signal is detected.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: September 14, 1993
    Assignee: Sony Corporation
    Inventor: Hajime Nishimura
  • Patent number: 5243417
    Abstract: A rear vision system for vehicles, and more particularly to a system for providing a rider of a two-wheeled vehicle having movable handlebars the capability of seeing what is behind the vehicle while still facing forward.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: September 7, 1993
    Assignee: Sony Corporation
    Inventor: Christopher A. Pollard
  • Patent number: 5243580
    Abstract: The present invention is directed to a magneto-optical recording apparatus in which a rotating device for the recording magnet is composed of a drive coil and a yoke. Therefore, the efficiency of the rotating device can be increased to thereby reduce the power consumption. Also, since the recording magnet is attracted to the yoke, the settle position of the recording magnet can be stabilized satisfactorily.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: September 7, 1993
    Assignee: Sony Corporation
    Inventor: Fumisada Maeda
  • Patent number: 5242049
    Abstract: A case for a disc cartridge comprises a cover, and a case body having the cover rotatably attached thereto and having on its bottom wall integrally formed a plurality of resilient hold members for resiliently holding a disc cartridge.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: September 7, 1993
    Assignee: Sony Corporation
    Inventors: Tomio Mizuno, Shinkichi Kobayashi
  • Patent number: 5240548
    Abstract: An apparatus for assembling a recording medium having a recording disc and a center core having an adhesive coated area of attachment to the recording disc. The apparatus includes a horizontal base member, a support member rigidly fixed on the base member, and a core support table secured on the base member for carrying the center core placed thereon. The recording disc is placed on the attachment area of the center core placed on the core support table. A pushing tool is supported for vertical movement along the support member toward and away from the core support table. The pushing tool is moved downward to push the recording disc against the attachment area of the center core so as to bond the recording disc on the center core.
    Type: Grant
    Filed: April 24, 1991
    Date of Patent: August 31, 1993
    Assignee: Sony Corporation
    Inventors: Shotoku Aramaki, Shuichi Kikuchi
  • Patent number: 5241526
    Abstract: A recording data formulating system employed in a pre-mastering process in the course of preparation of a pre-recorded optical disc is disclosed, in which the audio information and the video information are converted by a computer 11 into the information conforming to the CD-I data format, and in which the amount of the converted software corresponding to at least the capacity of an optical disc is stored in the memory 13. Data reproduction is made by the CD-I player 15 based on the data read out from memory 13.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: August 31, 1993
    Assignee: Sony Corporation
    Inventor: Toshiyuki Ishii
  • Patent number: 5239694
    Abstract: A transmitter having a battery therein and which is driven by a voltage supplied from the battery is comprised of an input key pad having operation keys for inputting transmission data, a data length detecting unit for detecting a length of the input transmission data, a voltage supervisory unit for detecting an output voltage of the battery, a discharge characteristic memory for previously storing a discharge characteristic of the battery, and a calculating unit for calculating data length which can be transmitted on the basis of a voltage value detected by the voltage supervisory unit and discharge characteristic data stored in the discharge characteristic memory, wherein when the data length detected by the data length detecting unit is longer than the data length which can be transmitted, the transmission data is inhibited from being transmitted. Thus, communication can be increased in reliability.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: August 24, 1993
    Assignee: Sony Corporation
    Inventor: Akihiko Toyoshima