Quotables
"If you build a better mousetrap, you will catch better mice."
George Gobel
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8094532 | Interlayer movement apparatus, and integrated circuit for interlayer movement apparatus In an interlayer movement apparatus for moving the focal point of the laser light to an arbitrary layer, there are provided an objective lens which collects the laser light from an optical source, a focus actuator which makes the objective lens move in its optical a... | 01/10/2012 |
| 8077574 | Drive device and method for controlling the same An optical drive includes: an optical pickup; a preprocessing circuit which processes an optical signal detected by the optical pickup; nonvolatile memory having stored therein relation information which represents the relation of a signal balance with respect to a ... | 12/13/2011 |
| 8054724 | Recording/reproducing apparatus and tracking control method A recording/reproducing apparatus and a tracking control method which can perform data processing for reliably recording or reproducing data on or from a recording medium are disclosed. Tracking error signal (TE) is generated using difference signal (A−B) produced... | 11/08/2011 |
| 8045436 | Method and apparatus for adjusting focus offset based on target condition The present invention provides an apparatus of an optical disc drive for adjusting a focus error signal. The apparatus includes a focus offset determining unit and an adjusting module. The focus offset determining unit is utilized for determining a target focus offs... | 10/25/2011 |
| 8018808 | Method for inspecting optical information recording medium, inspection apparatus, optical information recording medium and recording method A method for inspecting an optical information storage medium includes irradiating the medium with a laser beam and rotating the medium by a constant linear velocity control technique by reference to the radial location at which the laser beam forms a spot on the me... | 09/13/2011 |
| 8018807 | Method and apparatus of compensating for misalignment in an optical disk device A method and apparatus of compensating for misalignment in an optical disk device includes detecting a plurality of focus error signals, comparing the focus error signals, and shifting a position of an optical lens based on the comparison. Alternatively, a one or mo... | 09/13/2011 |
| 8014249 | Method for gradually closing down a focus control loop of an optical drive system The present invention relates to a method for operating an optical drive system (12) capable of reproducing/recording information from/to an optical carrier (1), wherein the optical drive system includes a focus controller (PID) for controlling a focus... | 09/06/2011 |
| 8014250 | Method for inspecting optical information recording medium, inspection apparatus, optical information recording medium and recording method A method for inspecting an optical information storage medium includes irradiating the medium with a laser beam and rotating the medium by a constant linear velocity control technique by reference to the radial location at which the laser beam forms a spot on the me... | 09/06/2011 |
| 8014251 | Method for inspecting optical information recording medium, inspection apparatus, optical information recording medium and recording method A method for inspecting an optical information storage medium includes irradiating the medium with a laser beam and rotating the medium by a constant linear velocity control technique by reference to the radial location at which the laser beam forms a spot on the me... | 09/06/2011 |
| 8000198 | Phase-change type optical recording medium and reproduction method and apparatus for such a recording medium A dual-layer structure phase-change type optical recording medium includes a substrate (1), a reflective layer (2), a first protective layer (3), a first recording layer (4), a second protective layer (5), a resin intermediate laye... | 08/16/2011 |
| 7995439 | Optical disc apparatus and optical disc replay method When an optical disc apparatus reproduces information from an optical disc, it converges a reading light beam emitted from an LED to substantially collimated light and projects it to the optical disc to cause it to be reflected by reflection surface thereof so as to... | 08/09/2011 |
| 7974167 | Optical disc apparatus, optical information equipment with the optical disc apparatus, and focusing control LSI in the optical disc apparatus In the present invention, at the time of pulling a focus on an information recording surface of a disc, a focus servo is first pulled in a disc surface of the disc, and with the servo in a settled state, a driving signal necessary for following surface wobble is sto... | 07/05/2011 |
| 7894317 | Optical recording medium recording and reproducing apparatus and tracking control method A tracking control is performed based on a first tracking error signal obtained from a first light beam reflected on an optical recording medium and a second tracking error signal obtained from a second light beam reflected on the optical recording medium. The first... | 02/22/2011 |
| 7885159 | Optical disc drive device with anti-scraping mechanism The method prevents an optical disk from being scraped by an optical apparatus of a pickup head of an optical disc drive is disclosed, it mainly includes: moving the optical apparatus of the pickup head to a detection position in which the laser-light emitted from t... | 02/08/2011 |
| 7859967 | Optical disk drive with spherical aberration measurement and method of measuring spherical aberration in an optical disk drive The invention relates to an optical disk drive. The optical disk drive has an objective lens to be driven by a focus actuator with a focus offset for focusing an incident beam onto an optical disk into a spot with a spherical aberration, and a processor to derive a ... | 12/28/2010 |
| 7835241 | Optical disc playback apparatus An optical disc playback apparatus with which collision of a lens and an optical disc is avoided is provided. Processes executed by a microcomputer of the optical disc playback apparatus when a disc is played back include: the step of outputting a signal for perform... | 11/16/2010 |
| 7826322 | Tracking error control apparatus, tracking error control circuit, optical disk apparatus and tracking error control method A second tracking error detector detects the displacement between the track and the light beam and outputs a second displacement detection result based on the comparison of the reproduction signals between first and second pit strings respectively. A second tracking... | 11/02/2010 |
| 7804752 | Focal offset recording system and method The present invention is embodied in a recording device and media for storing computer readable data on a removable storage medium that includes using a first wavelength to write data to the removable storage medium and creating marks while writing the data that hav... | 09/28/2010 |
| 7782728 | Device for layer-jumping control of optical disc devices and related method A layer-jumping control device and method for an optical disc device includes a calculator, a controller, and a driver. The calculator is configured to receive an error-focusing signal, and to determine a peak and a trough of the error-focusing signal. The controlle... | 08/24/2010 |
| 7778129 | Optical disk apparatus, focal position control method and focal position control apparatus An optical disk apparatus can reliably detect the target recording layer of an optical disk having two recording layers. The optical disk apparatus is adapted to recording information on and reproducing information from an optical disk formed by sequentially laying ... | 08/17/2010 |
| 7778130 | Optical disc apparatus An optical disc apparatus comprises, an optical pickup, a signal extracting unit for reading address information and an RF signal from an optical disc based on signal read by the optical pickup, and a main controller for performing jitter control and focus control. ... | 08/17/2010 |
| 7768890 | Apparatus and method for calibrating focus balance in an optical disk drive The present invention is to provide an apparatus and method for calibrating focus balance in an optical disk drive. A focus servo unit controls a pick-up head to focus and read a mark for generating an RF signal. A jitter generator separates a jitter signal from the... | 08/03/2010 |
| 7764582 | Focus servo apparatus A focus servo apparatus which comprises an optical pickup having a power lens that changes an incidence angle of laser light incident on an objective lens and a power lens actuator that drives the power lens along an optical axis direction. In a focus search operati... | 07/27/2010 |
| 7724626 | Optical pickup and optical information recording apparatus using the same An optical pickup includes a diffraction grating partitioned into three areas, in which the phase of periodic grating groove structure in an area is successively shifted from that in the adjacent area by 90°. In the generation of a differential push-pull signal, an... | 05/25/2010 |
| 7668060 | Optical disc apparatus, method of adjusting focus offset for optical disc apparatus, and program for executing focus offset adjustment In an optical disc apparatus, whether an unrecorded recording layer without information recorded thereon is included in the multiple recording layers of the optical disc mounted inside the apparatus is judged. then when the unrecorded recording layer is judged to be... | 02/23/2010 |
| 7660223 | Disc device A disc device includes a lens that focuses a laser light on an optical disc surface, a focus drive unit that drives the lens in a focusing direction, a focus control unit that controls to focus the laser light on the optical disc surface, a focus displacement detect... | 02/09/2010 |
| 7656766 | Servo-controlling method of an optical disk apparatus The present invention relates to a servo-controlling method of an optical disk apparatus. In the present invention, an order on which servo-control manner is sequentially applied is determined in advance based on various depth to respective recording layers of a CD,... | 02/02/2010 |
| 7613092 | Reproduction apparatus and focus jump method The invention provides a reproduction apparatus that reproduces information recorded in a recording medium having plural recording layers, including: an optical head that irradiates laser beams on the respective recording layers and detects reflected light informati... | 11/03/2009 |
| 7558176 | Method for preventing optical disk from being scraped The method prevents an optical disk from being scraped by an optical apparatus of a pickup head of an optical disc drive is disclosed, it mainly includes: moving the optical apparatus of the pickup head to a detection position in which the laser-light emitted from t... | 07/07/2009 |
| 7535809 | Optical recording apparatus with drawing capability of visible image on disk face A system and method of drawing a visible image on an optical disk are provided. The optical disk is rotated while a optical pickup irradiates a laser beam onto the optical disk to draw the visible image on the optical disk. The rotating state of the optical disk is ... | 05/19/2009 |
| 7440377 | Method for adjusting focus bias in optical disc drive and optical disc drive that can implement the method A method for adjusting a focus bias in an optical disc drive comprises the steps of: rotationally driving an optical disc in a state that only focus servo is engaged without engaging tracking servo; driving an actuator of an optical pick-up so that a laser beam proj... | 10/21/2008 |
| 7436420 | System and method for controlling a tracking servo during label printing A visible light characteristic changing layer formed from photosensitive or heat-sensitive material is formed in a location which can be viewed from a part of a label surface of an optical disk. The optical disk is set on a turntable of an optical disk unit while th... | 10/14/2008 |
| 7426159 | Method of reproducing optical disk and optical disk reproducing apparatus A method of reproducing an optical disk that that shortens the time between optical disk insertion and implementation of a standby mode enabling reproduction is provided that comprises a step of reading parameters stored in a nonvolatile memory, a step of deciding w... | 09/16/2008 |
| 7406016 | Optical disk apparatus and control method for controlling distance between a head and a disk An optical apparatus includes: a light source outputting light; a head disposed so as to face a disk on which a signal is recordable, the head being capable of condensing a light from the light source onto the disk as near-field light; an distance adjusting mechanis... | 07/29/2008 |
| 7397746 | Method and device for controlling beginning point of optical pick-up unit A method and device are provided for controlling a beginning point of an optical pick-up unit. The optical pick-up unit moves to a beginning point of an optical disc such as a DVD (Digital Versatile Disc) to execute a servo-tuning function at the beginning point. Th... | 07/08/2008 |
| 7397737 | Output adjustment method for lens position sensor of optical disk device and optical disk device thereof A position sensor detects a position of an objective lens for irradiating light onto an optical disk. An output adjustment of the position sensor is used for correcting characteristics change due the change with the passage of time. The position of an objective lens... | 07/08/2008 |
| 7394734 | Optical disk drive using near-field light, optical disk apparatus, and method for driving the apparatus An optical disk drive includes a light source, a light focusing element, a light-focusing-element moving mechanism, a detecting unit, a holding unit, and first and second control units. The light focusing element arranged so as to be opposed to a disk on which a sig... | 07/01/2008 |
| 7391682 | Optical disk system with improved signal regulation capability A system, method, computer program and apparatus for providing regulating signals for regulating the position of an objective lens relative to a track on a disk. The regulating signals are obtained in response to an access request specifying an access target region ... | 06/24/2008 |
| 7388820 | Optical disc reading and reproducing apparatus An optical disc reading and reproducing apparatus includes reading means for reading data recorded on an optical disc by applying laser light to the disc through an objective lens and detecting reflected light, focus control means for performing focus control for mo... | 06/17/2008 |
| 7379404 | Apparatus and method of compensating for tilt and/or defocus of a disc during recording A method of compensating for tilt and/or defocus and an apparatus therefor. The apparatus has a tilt and/or defocus detector detecting the tilt and/or defocus of an optical recording medium, and a recording compensator compensating a write pulse having a predetermin... | 05/27/2008 |
