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| Number | Title | Issue Date |
| 8174946 | Optical disk apparatus and method of controlling optical disk apparatus An optical disk apparatus includes a rotary driving unit rotating an optical disk which is flexible, an optical pickup irradiating light upon a recording surface of the optical disk on which writing/reading of information is performed, a stabilizing unit stabilizing... | 05/08/2012 |
| 7852723 | Disk drive system employing effective disk surface stabilization mechanism A stabilization part stabilizes surface vibration of a flexible optical disk along a rotation axis direction of the optical disk by means of pressure difference of air flow created according to Bernoulli's law at a portion on which information writing/reading is per... | 12/14/2010 |
| 7787339 | Reproducing position control circuit and reproducing system A reproducing position control circuit has a reading part for reading data stored in a recording medium, a position information detecting part for detecting the position information of data read by said reading part within said recording medium, and a control part f... | 08/31/2010 |
| 7773474 | Disc apparatus A disc apparatus which enables an optical pickup to move swiftly to a target track is provided. A disc apparatus (1) includes an optical pickup (4) which irradiates an optical disc (2) with a laser light, a motor (6) which moves th... | 08/10/2010 |
| 7746744 | Optical recording system and method thereof An optical recording system and a control method thereof. The method includes detecting a target signal level. If the change level of the target signal exceeds a tolerant range, it represents that a shock has occurred. The shock frequency is recorded according to th... | 06/29/2010 |
| 7693017 | Optical disc device In a conventional method for preventing a collision between a lens and an optical disc which uses a control system similar to the servo control of the optical disc, it is feared that, when there is no need to apply the servo, the collision prevention method may not ... | 04/06/2010 |
| 7668058 | Method and system for evaluating CD player response to vibration during playback of a CD A system and methods for evaluating the response of an optical digital disk player to vibration encountered during playback of optical digital disks are provided. The system includes a simulator configured to provide digital simulated output signals simulating the o... | 02/23/2010 |
| 7583577 | System and method for measuring vibration characteristics of optical disk drive A vibration measuring system is used for measuring vibration characteristics of an optical disk drive. The vibration measuring system includes a command setting unit, a command sending unit, and a signal receiving unit. The command setting unit is used for setting a... | 09/01/2009 |
| 7548502 | Power backup method for disk storage device HDD boxes 831 to 83n are each incorporated with a secondary battery box 87, a non-isolated DC/DC converter 89, and an HDD 91. Logical circuit boards 851 to 85n are each inco... | 06/16/2009 |
| 7428199 | Optical disk stabilizing apparatus and method of controlling optical disk stabilizing apparatus An optical disk apparatus includes a rotary driving unit rotating an optical disk which is flexible, an optical pickup irradiating light upon a recording surface of the optical disk on which writing/reading of information is performed, a stabilizing unit stabilizing... | 09/23/2008 |
| 7426163 | Method and apparatus for preventing malfunction of disc drive A method and apparatus for preventing a malfunction of a disc drive due to an operation error of a correction function for a minimum pit length by selectively performing the correction function based on an operative state of the disc drive. The method includes a fir... | 09/16/2008 |
| 7423942 | Optical disc device for recording different types of optical discs and data recording method for optical disc device In an optical disc device comprising: a pickup 3 having a laser diode and generating a laser beam for recording onto an optical disc 1; a disc motor 2 that drives the rotation of an optical disc mounted thereon; a stepping motor that moves the p... | 09/09/2008 |
| 7406012 | Semiconductor laser driving device, optical head device, optical information processing device, and optical recording medium In order to make it possible to reproduce information recorded on an optical recording medium without causing deterioration in the information, a semiconductor laser driving device include a semiconductor laser, a photodetecting element for receiving a part of light... | 07/29/2008 |
| 7376063 | Control circuit of optical storage device and method thereof A control circuit of an optical storage device includes a loop phase calculation unit for calculating a closed loop phase of a servo system according to at least one error signal of the servo system and a system control unit coupled to the loop phase calculation uni... | 05/20/2008 |
| 7363111 | Methods and systems for analyzing engine unbalance conditions Methods and systems for analyzing engine unbalance conditions are disclosed. In one embodiment, a method includes receiving vibrational data from a plurality of locations distributed over an engine and a surrounding engine support structure, and inputting the vibrat... | 04/22/2008 |
| 7357054 | Highly dynamic processing machine for lenses A highly dynamic lens processing machine with a machine bed having at least a first tool holder and one workpiece holder with an axis of rotation and including a workpiece spindle arranged thereon. The first tool holder includes at least one dynamic linear drive wit... | 04/15/2008 |
| 7352669 | Method and device for disc rotation control in an optical storage system based on detected extent of disc warping A digital signal processing device is provided for disc rotation control in an optical storage system, which is capable of generating a focusing error signal from light that was reflected by an optical disc loaded in the optical storage system. The digital signal pr... | 04/01/2008 |
| 7349307 | Method of recording data optimally onto a recording medium The present invention relates to a method of maintaining an optimal writing power for various recording modes during data recording onto a recording medium. The present method checks a recording speed at a recording position, reads a write strategy set for the check... | 03/25/2008 |
| 7342853 | Optical disc system and method for managing shock during data record/play An optical disc system and a method of managing shock while recording or playing data in the optical disc system are provided. The optical disc system includes an optical pick-up unit for applying a laser beam to a track of an optical disc and detecting reflected li... | 03/11/2008 |
| 7336593 | Information storage medium, information recording method, and information recording/reproduction apparatus This invention achieves high-density recording while preventing recording units from overlapping. Recording is done to form a gap between predetermined recording units. Since this gap is formed, even when a rotation driving mechanism of a medium suffers rotation non... | 02/26/2008 |
| 7333411 | Optical recording method and optical recording device The present invention is directed to an optical disc recording apparatus adapted for recording data onto a recodable/reproducible optical disc, which comprises a system controller (10) for executing finalize processing in the state divided into plural process... | 02/19/2008 |
| 7330410 | Information recording method and apparatus, information processing apparatus, information recording system and computer-readable storage medium using dummy data An information recording method records information in an information recording medium by acquiring driving power supply information related to a driving power supply of an information recording apparatus which records the information in the information recording me... | 02/12/2008 |
| 7324414 | Apparatus and method of optical disk recording while detecting vibration According to the present invention, it is intended that the recording can be executed normally even against small vibrations to which a servo error signal detecting circuit cannot respond. A recording apparatus according to the present invention includes an optical ... | 01/29/2008 |
| 7324417 | Optical disc recording apparatus An optical disc recording apparatus 100 comprises a temperature detecting circuit 141 for detecting a temperature of an optical disc 200 and corrects a laser power for discoloration a discoloration layer of the optical disc 200 in accorda... | 01/29/2008 |
| 7325104 | Storage device using interleaved memories to control power consumption A storage device includes a plurality of memories storing data; and a controller controlling the memories, the controller performing in parallel in a number of the memories, the number being specified by a supplied specifying signal, one of a data writing process fo... | 01/29/2008 |
| 7321809 | Methods and systems for analyzing engine unbalance conditions Methods and systems for analyzing engine unbalance conditions are disclosed. In one embodiment, a method includes receiving vibrational data from a plurality of locations distributed over an engine and a surrounding engine support structure, and inputting the vibrat... | 01/22/2008 |
| 7321532 | Protection device and method of a read and write medium apparatus The present invention provides a protection device and method of a read and write medium apparatus. When the read and write medium apparatus is operating, the protection device detects the external force and dynamically compels to cut the power supply off to remain ... | 01/22/2008 |
| 7307931 | Determining a value of a recording pulse parameter for optical recording A method is described for setting an optimum recording power level for recording information on an optical record carrier. First a series of test patterns is written on the record carrier with a different recording power. On reading the test patterns, the jitter val... | 12/11/2007 |
| 7304926 | Motor control system having output clamp function and method of the same A motor control system comprises a motor controller and a clamp apparatus and is used for controlling a motor apparatus. The motor controller is used for generating a motor control output according to a reference signal and a feedback signal from the motor apparatus... | 12/04/2007 |
| 7301867 | Method and apparatus for changing a recording speed of a disk device The present invention relates to a recording speed determining method of a disk device. The present method, when data record is requested from a host through an interface, a disk device can receive size information about data to be recorded and/or the present time f... | 11/27/2007 |
| 7301873 | Information recording medium, information recording device and method therefor, and computer program product and storage medium therefor On a recording medium, the version information indicating a version of the recording standard to which the information recording medium is adapted is recorded. Moreover, the normal recording condition information for recording information at a normal recording speed... | 11/27/2007 |
| 7291996 | Optical disc drive and brake control method thereof An optical disc drive 1 includes a spindle motor 11 for rotating the optical disc 2 and a spindle driver for driving the spindle motor 11 equipped with a rotation number counter 232 for measuring the rotation number of the spindle ... | 11/06/2007 |
| 7293060 | Electronic disc jockey service An electronic disc jockey service in which the services of a disc jockey are effectively transformed into an Internet-based (or other network-based) service that is accessible from anywhere the Internet is accessible. Disc jockey services may in theory be provided t... | 11/06/2007 |
| 7289407 | Methods for establishing audio track digital audio extraction speed A method for recording audio data to optical media is provided. The method includes obtaining a number of audio tracks on a source optical media and setting a source optical media device to a maximum read speed for the source optical media device. Also included is r... | 10/30/2007 |
| 7286453 | Rotation control device, method thereof, program thereof, recording medium storing the program, and information processing apparatus A temperature sensor (131) detects a temperature of a spindle motor (121) of a rotary drive unit (120) for rotating a disk-shaped recording medium (1), and a temperature information acquiring unit (134A) acquires the temperatures a... | 10/23/2007 |
| 7283148 | Optically marking the label side of an optical disc A method for labeling an optically writable label side of an optical disc of an embodiment of the invention rotates the optical disc such that an optical marking mechanism passes adjacent to a track of the optically writable label side of the optical disc a number o... | 10/16/2007 |
| 7280452 | Optical recording/reproducing apparatus capable of reproducing backup recorded information in case of a power failure and recorded information backup method thereof An optical recording/reproducing apparatus capable of backing up recorded information in case of an electrical power failure and a recorded information backup method thereof. Management information on recorded data is stored in a local memory such as a static random... | 10/09/2007 |
| 7280446 | Optical disk drive responsive to internal temperature change There is provided an optical disk drive capable of appropriately effecting recording and reproducing operations without being affected by offset values and a laser output value, which are set at startup of the disk drive, even when changes have arisen in the interna... | 10/09/2007 |
| 7274640 | Apparatus and method for determining disc type A disc type determining apparatus in a disc recording and reproducing apparatus in which vibrations generated by rotations of a disc occur in a focus and tracking control actuator includes an error gain adjusting unit, which adjusts an amplitude of a focus and track... | 09/25/2007 |
| 7275166 | Power saving control system and power saving control method Provided is a power saving control method and system for data storage devices or electrical equipment. Herein, data items are divided into groups according to required response times or access frequencies. The groups of data items are allocated to data storage devic... | 09/25/2007 |
