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| Number | Title | Issue Date |
| 7924667 | Recording and/or reproducing apparatus, medium, and method controlling a write speed A recording and/or reproducing apparatus, medium, and method controlling a write speed of a disk drive. The method may includes measuring a predetermined disk quality evaluating factor affecting a servo control performance in multiple areas of a disk, determining an... | 04/12/2011 |
| 7898914 | Optical disk recording apparatus and method of forming visible image on optical disk An optical disk is equipped with a predetermined mark. A frequency generator outputs an FG pulse of frequency corresponding to the rotational speed of a spindle motor used for rotationally driving the optical disk. The edge of the FG pulse detected by an edge detect... | 03/01/2011 |
| 7684296 | Information recording/reproducing apparatus having control circuit of spindle motor There is provided an information recording/reproducing apparatus for recording or reproducing an information to or from an information recording medium having a plurality of recording layers stacked on a substrate which can always perform stable spindle rotation con... | 03/23/2010 |
| 7619954 | Method for controlling spindle in optical disc device A method and apparatus for controlling a maximum rotational speed of a recording medium, are discussed. The method according to an embodiment of the present invention includes determining an imbalance error of the recording medium, and variably setting a maximum rot... | 11/17/2009 |
| 7545713 | Access method, information recording and reproducing apparatus, and recording medium An access method for use when switching from recording into an optical disk to reproduction from the optical disk or vice versa is disclosed that comprises a step of calculating a rotating speed n2 of a motor for rotating the optical disk given that linear ve... | 06/09/2009 |
| 7505383 | Optical disc recording apparatus and method of forming an image on an optical disc In a case where an image of a density that is uniform over a substantially whole area of an optical disc (200) is to be formed, a servo circuit (138) controls the rotation speed of a spindle motor (130) to be constant, and an ALPC circuit (16... | 03/17/2009 |
| 7466637 | Optical disc recording apparatus and method of forming an image on an optical disc In a case where an image of a density that is uniform over a substantially whole area of an optical disc (200) is to be formed, a servo circuit (138) controls the rotation speed of a spindle motor (130) to be constant, and an ALPC circuit (16... | 12/16/2008 |
| 7440375 | Information recording device and method There is provided an information recording device for recording record information onto an information recording medium having a plurality of recording layers. The information recording device includes: write elements capable of writing record information into the r... | 10/21/2008 |
| 7414643 | Method for compensating for position error in an optical disc apparatus A method for compensating for a position error in an optical disc drive (ODD) is provided. The method compensates for a position error generated by a step error associated with a motor which moves an optical pickup unit across a surface of an optical disc. Error dat... | 08/19/2008 |
| 7391709 | Information recording carrier and method of reproducing the same An information recording carrier in one mode has minute pattern including plural grooves or lands formed in parallel and adjacent each other and comprises a supporting body having the minute pattern, a recording layer formed on the minute pattern, and a light transm... | 06/24/2008 |
| 7359300 | Recording condition determining method, program, and medium, information recording apparatus, and information recording system A recording condition determining method is disclosed for realizing high quality recording at high speed while preventing the degradation of a light source. Specifically, a determination is made as to whether an optimal recording power obtained through OPC or runnin... | 04/15/2008 |
| 7355939 | System and method for switching control modes of spindle motor A system and method of switching the control modes of spindle motor are described. The switch system comprises a first control module, a second control module and a switch controller. The first control module electrically coupled to the spindle motor and the OPU con... | 04/08/2008 |
| 7355940 | Optical disk apparatus and waiting method thereof An optical disk apparatus including a waiting position determining circuit which detects physical properties of each region in an optical disk after recording or reproducing processing is finished and decides a waiting position of an optical head according to the de... | 04/08/2008 |
| 7349304 | Information storage medium evaluation method, information storage medium evaluation apparatus, information storage medium, information reproduction apparatus, information reproduction method, and information recording method An information storage medium according to an aspect of this invention has an information storage area for storing information, and a wobbled track which is used to guide a light beam on the information storage area, and is wobbled in correspondence with a frequency... | 03/25/2008 |
| 7339862 | Optical disc driving system and method for determining rotation speed of optical disc A novel optical disc driving system and method for determining the rotation speed of an optical disc are provided, which allow to determine the highest rotation speed optimal for reading out audio and video data in the optical disc in accordance with the environment... | 03/04/2008 |
| 7333413 | Optical storage device rotation speed control apparatus and method A method for controlling the rotation speed of an optical storage device. In the first mode, a first signal is produced, and in the second mode, a second signal is produced. In one mode, a first pulse of a first voltage and a second pulse of a second voltage are sen... | 02/19/2008 |
| 7330413 | Smart burn method for optical drive The present invention is smart burn method for optical drives. When the laser pick-up head bears great oscillations along the vertical and horizontal directions, the laser light cannot focus on the track accurately that causes the failure of writing. The present inv... | 02/12/2008 |
| 7327651 | Optical disc device Provided is an optical disc device in which adjustment precision of recording laser power is improved without complication of a processing sequence during recording operation. In response to a recording start instruction, OPC is executed using an inner disc drive zo... | 02/05/2008 |
| 7321539 | Locating information on an optical media disc to maximize the rate of transfer A user-interactive program assists a user in locating files on optical media discs such as CD-ROMs and DVDs to enhance file-transfer rates and program installation times in computers with a Constant Angular Velocity (CAV) optical media disc drive. In addition, an ap... | 01/22/2008 |
| 7279945 | High resolution phase locked loop A phase locked loop (PLL) generates a phase locked signal and adjusts a frequency of the phase locked signal according to an incoming signal. The PLL includes an oscillator for generating the phased locked signal and a frequency detection module electrically coupled... | 10/09/2007 |
| 7277379 | Information recording carrier Plural grooves or lands formed in an information recording carrier include at least a wobbling region and data is recorded wobblingly in this wobbling region by phase shift modulation while recorded digitally with a single or multiple waves as a channel bit. ... | 10/02/2007 |
| 7274627 | Record carrier and apparatus for scanning the record carrier A record carrier has a servo track indicating an information track intended for recording information blocks, which servo track has a variation of a physical parameter, referred to as wobble. The wobble is modulated for encoding record carrier information, such as a... | 09/25/2007 |
| 7274645 | Reproduction signal processing apparatus and optical disc player including the same A reproduction signal processing apparatus includes: a reproduction unit, an A/D converter for sampling a reproduction signal to obtain a multi-bit digital signal, a phase-locked loop controller for outputting a reproduction clock that is in phase with clock compone... | 09/25/2007 |
| 7266063 | Optical power calibration method according to a data writing location onto an optical storage carrier A method is used for calibrating a writing power of an optical storage carrier player. The player has an access device for writing data onto the optical storage carrier. The carrier includes a center, an inner power calibration area (first calibration area), a data ... | 09/04/2007 |
| 7262929 | Setting the rotation speed of a rotating disk memory The invention relates to a device comprising a disk drive 1 for rotating a disk memory and at least one interface enabling a data flow between a rotating disk memory and at least one other module 10, 12. In order to enable a comfortable use of such a d... | 08/28/2007 |
| 7233552 | Optical disk device capable of recording information data according to ZCLV format An optical disk device for recording data in an optical disk under ZCLV control is provided. The optical disk device divides the optical disk into a plurality of zones, and drives said optical disk at a linear velocity fixed in each zone but varied among the zones. ... | 06/19/2007 |
| 7230901 | Method for recording address information on optical recording medium, optical recording medium including address information recorded thereon by the same method, and method for detecting address information recorded on the same optical recording medium Disclosed are a method for recording address information on an optical recording medium, an optical recording medium including address information recorded thereon by the same method, and a method for detecting the address information recorded on the optical recordi... | 06/12/2007 |
| 7218585 | Information medium and information recording/reproduction apparatus An information medium includes a lead in area and a data area capable of recording an arbitrary information signal. The lead in area has a recordable portion where an information signal can be recorded. The recordable portion of the lead in area has an identifier I | 05/15/2007 |
| 7218587 | Method for determining writing power of data recording devices A method for determining the writing power of data recording devices. First, the inner circle and outer circle of recording media are processed with optimum power calibration (OPC) to obtain an inner circle optimum writing power and an outer circle optimum writing p... | 05/15/2007 |
| 7206269 | Optical disk recording/reproducing apparatus with reduced resume time The present invention shortens a time to be elapsed from a recording interruption to a recording restart, thereby realizing a reliable recording restart. In one embodiment, an optical disk apparatus comprises an optical pickup and a processor, which includes a repro... | 04/17/2007 |
| 7200083 | Speed control method for recording data on an optical disk A speed control method used in an optical disk drive for recording data onto an optical disk includes the following steps: detecting an allowable maximum recording speed of the optical disk and an allowable minimum recording speed of the optical disk, calculating a ... | 04/03/2007 |
| 7171156 | Method and apparatus for transmitting audio and non-audio information with error correction A method and an apparatus for providing digital quality transmission of audio and non-audio information using low cost components and arrangement. The present invention provides for the transmission of the audio and non-audio transmission by first converting the dat... | 01/30/2007 |
| 7158458 | Method and apparatus for recording/reproducing information with respect to optical recording medium A method and an apparatus are provided, which enable a user's standby time to be shortened or utilized effectively in the course of recording/reproduction of information with respect to an optical disk. Information recorded on a disk is reproduced preferentially, an... | 01/02/2007 |
| 7158472 | Record carrier and apparatus for scanning the record carrier A record carrier has a servo track (4) indicating an information track (9) intended for recording information blocks. The servo track (4) has a periodic variation of a physical parameter at a predetermined frequency and modulated parts for encod... | 01/02/2007 |
| 7149163 | Recording technique with particular sunchronization data Disclosed is a disk-like recording medium, a disk recording apparatus and a disk recording method, and a disk playback apparatus and a disk playback method. Disk ID is recorded over a circle of a burst cutting area on an optical disk. The circle is divided into n bl... | 12/12/2006 |
| 7138782 | Motor control system and method of the same The present invention provides a motor control system and method thereof. The motor control system comprises a motor controller and a compensation device. The motor controller is used for generating a motor control output according to a reference signal and a first ... | 11/21/2006 |
| 7123557 | Disc-shaped recording medium disc driving device and method and apparatus for producing disc The information such as address is to be efficiently formed into wobble components and further the S/N ratio in reproducing the information formed into the wobble components is to be improved. In an optical disc of the present invention, there are recorded in a wobb... | 10/17/2006 |
| 7123552 | Wobble signal detecting circuit for optical disc system A wobble signal detecting circuit for optical disc system includes at least a sample-and-hold circuit for carrying out sample-holding steps on each of first and second photoelectric signals, and a high range frequency limiting circuit for removing frequency componen... | 10/17/2006 |
| 7116622 | Optical storage device rotation speed control apparatus and method A method for controlling the rotation speed of an optical storage device. In the first mode, a first signal is produced, and in the second mode, a second signal is produced. In one mode, a first pulse of a first voltage and a second pulse of a second voltage are sen... | 10/03/2006 |
| 7113475 | Optical information storage medium and recording/reproducing method for the optical information storage medium An optical information storage medium includes information on recording layers having the same reproduction channel characteristics or different reproduction channel characteristics. Nominal recording speed information is recorded in a read-only zone, and maximum an... | 09/26/2006 |
