Bizarre Patents
Nicotine Containing Dental Floss
Keep away cavities and cancer at the same time.
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 |
| 8169867 | Optical disc drive apparatus In an optical disc drive apparatus, when a start time of a tracking pull-in operation is adjusted according to the eccentricity amount of the optical disc, a suitable starting point of the tracking pull-in operation can be always captured and the pull-in operation o... | 05/01/2012 |
| 8164997 | Optical disc apparatus for conducting information recording or reproduction on an optical disc An optical disc apparatus including means for calculating a spherical aberration correction quantity of an object lens, reproduced information signal generation means and spherical aberration correction means conducts spherical aberration correction, finds a spheric... | 04/24/2012 |
| 8089838 | Optical disc apparatus and tracking control method An optical disc apparatus includes: a rotation section to rotate an optical disc including a spiral or concentric track with a predetermined track center, with a rotational center of the optical disc as the center; a light source to emit a light beam; an objective l... | 01/03/2012 |
| 8072858 | Optical disk apparatus, control method of optical disk apparatus, and integrated circuit A disk motor which rotationally drives an optical disk; a rotational phase detector which detects a rotational phase thereof; an optical head having a collecting lens which collects an optical bean; a light detector and an LE signal generator which detect a position... | 12/06/2011 |
| 8050161 | Optical disk drive An optical disk drive capable of reproducing data even when warpage is present in an optical disk. A system controller of the optical disk drive reproduces data by setting a maximum speed in accordance with the type of an optical disk, an amount of side-to-side runo... | 11/01/2011 |
| 8023377 | Optical disc device and tracking and slider control method An optical disc device and tracking control method capable of stable tracking control even for inferior optical discs with tracks decentered by a large amount. The optical disc device and tracking control method includes: obtaining a rotation angle at which the degr... | 09/20/2011 |
| 7990824 | Method for distinguishing unbalanced disc A method for distinguishing unbalanced disc in an optical disc reproducing/recording apparatus, comprising following steps: moving an optical pickup head to a first position of an optical disc; rotating the optical disc to a predetermined rotating speed; transferrin... | 08/02/2011 |
| 7920448 | Runout detection method A method for determining runout disc is disclosed. The method comprises: focusing on a focal point on a disc; driving the disc to spin the disc; generating a crossover signal according to a track of the disc crossing the focal point; and determining that the disc is... | 04/05/2011 |
| 7760599 | Optical disk apparatus and disk rotation speed control method thereof In an optical disk apparatus and a disk rotation speed control method thereof, enabling to rotate a disk at high speed, with stability and certainty, irrespective of mass eccentricity thereof, detection is made on the greatest value and the smallest value on the sig... | 07/20/2010 |
| 7668056 | Warpage angle measurement apparatus and warpage angle measurement method for optical recording medium A warpage angle measurement apparatus and a warpage angle measurement method are provided that can measure an angle of warpage of an optical disc and a cartridge for the optical disc caused by a rapid environmental change such as a temperature change or a humidity c... | 02/23/2010 |
| 7548499 | Offset amount measuring method and apparatus An offset amount measuring method is provided with: a recording process for measurement (i) of recording information for measurement, into a recording track in the L0 layer, by a predetermined section, from a measurement reference position, and of (ii) record... | 06/16/2009 |
| 7515514 | Approximating topology of optically writable medium surface A method controls an assembly using an oscillating wave, such that the assembly moves in an oscillated manner in relation to a surface of an optically writable medium in correspondence with oscillation of the oscillating wave. The assembly generates a beam towards t... | 04/07/2009 |
| 7505386 | Radial runout detection method and device for an optical disk drive A radial runout detection method and device for an optical disk drive, which sets a reference locus at a location distant from a current beam locus by M, a minimum track number, a maximum track number and a detection time, and executes the following steps in the det... | 03/17/2009 |
| 7450483 | Information carrier apparatus and information carrier eccentricity correction method An information carrier apparatus for accessing an information carrier having at least one track formed therein includes a times crossed detection section for detecting the number of times that a head structured to access the information carrier has crossed the track... | 11/11/2008 |
| 7440373 | Optical disk drive detecting disk surface deviation An optical disk drive capable of detecting a surface deviation of a disk during a very short period includes an analog-to-digital converter (ADC) converting a focus error signal output from a pickup into digital data, and a central processing unit (CPU) writing an o... | 10/21/2008 |
| 7440371 | Unbalanced disc detection and reading speed control in disc reading apparatus An open-loop test procedure under high rotating speed is entered to compute a first TE crossing track number. The first TE crossing track number greater than a first threshold indicates an unbalanced disc and results in a low-speed reading procedure. On the other ha... | 10/21/2008 |
| 7420896 | Information recording apparatus An information recording apparatus according to one aspect of this invention comprises a detection unit configured to detect a manufacturing error unique to an information storage medium, a transmission unit configured to transmit the manufacturing error detected by... | 09/02/2008 |
| 7369344 | Method and apparatus for compensating for offset of disk drive A method for compensating an offset of a disk drive which is accomplished by recording actual spin jitter while performing track following, extracting a DC component from a recorded actual spin jitter, and compensating for an offset of a spindle speed based on an ex... | 05/06/2008 |
| 7370313 | Method for optimizing a photolithographic mask The invention relates to a method for optimizing a mask layout pattern comprising at least one structural feature. First a desired layout pattern is provided. Based on the desired layout pattern, an optimized reference diffraction coefficient is provided. After sele... | 05/06/2008 |
| 7362672 | Method and apparatus for disc rotation control in an optical storage system based on detected extent of disc warping An apparatus 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 a loaded optical disc. The apparatus includes a focus controller for processing the focusing erro... | 04/22/2008 |
| 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 |
| 7340156 | Information storage medium with aggregate attribute information, and apparatus for reproducing the same An information storage medium includes: a plurality of unit audio information to be reproduced independently of each other; aggregate audio information each including one or more of the unit audio information; unit attribute information indicating attributes of the ... | 03/04/2008 |
| 7339878 | Method and apparatus for recording optical information including dummy data, and optical disk having such data recorded thereon A method of recording data optically to an optical disk having a plurality of sectors, in which each sector has a region to be recorded with data, the data is recorded in units of blocks, and the block includes a predetermined number of sectors and is a data unit in... | 03/04/2008 |
| 7333410 | Method and apparatus for canceling repeatable run-out errors in positioning on recording medium A method and apparatus cancel repeatable run-out (RRO) errors in positioning on a recording medium using a RRO cancellation control voltage. The RRO cancellation includes (a) estimating a rotation period of the recording medium, (b) determining an update interval fo... | 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 |
| 7317669 | Method and apparatus for compensating for disc eccentricity in optical disc servo system A method and apparatus compensating for disc eccentricity includes extracting eccentricity data from a tracking error signal having one period, generated by a tracking servo, detecting parameter values of an eccentricity component extracted during the extraction of ... | 01/08/2008 |
| 7315497 | Method and an apparatus for reproducing information based on reference wobble block and an information wobble block on an information recording medium At the time of heterodyne detection, information is reproduced constantly in the optimum condition. A method reproduces information recording medium including a reference wobble block which has a first wobble pattern representing a first information content; and an ... | 01/01/2008 |
| 7304937 | Identification of program information on a recording medium A system and method of identifying programs contained on a disk of any format, including, for example, either a single-sided or a double-sided disk with either a single-layer or multi-layer tracks, are presented. In particular, a dual-sided recording medium is discl... | 12/04/2007 |
| 7301889 | Optical disc An optical disc having track grooves formed in a radial direction of the disc, and with the disc being divided into a plurality of zones, wherein track grooves are formatted into waved patterns, based on a predetermined modulation rule, in the radial direction of th... | 11/27/2007 |
| 7283452 | Objective lens having two aspheric surfaces and a phase shifter and optical device including the same An objective lens in which a first wavelength is used in reading a first optical disk, a second wavelength is used in recording or reading a second optical disk, and a phase shifter provided with annular step portions having a center coincident with an optical axis ... | 10/16/2007 |
| 7277366 | Optical head and optical recording and reproducing apparatus An optical head performs recording and/or reproducing of a signal to an optical recording medium and comprises a light source, an objective lens converging the light emitted from the light source to the optical recording medium, and objective lens tilting mechanism ... | 10/02/2007 |
| 7274644 | Information recording device and information recording method When a bias power level of a recording pulse waveform is varied entirely or partially, a shape of the recording pulse wave form is varied according to the variation. For example, when the bias power level is increased, a width or an edge position of a top pulse or a... | 09/25/2007 |
| 7272105 | Method and apparatus for recording optical information, and optical disk A method of recording data optically to an optical disk having a plurality of sectors, in which each sector has a region to be recorded with data, the data is recorded in units of blocks, and the block includes a predetermined number of sectors and is a data unit in... | 09/18/2007 |
| 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 |
| 7257062 | Method for detecting eccentricity of an optical disc, and optical disc drive that performs the method An optical disc drive includes a spindle motor and a computer program. The spindle motor is adapted for rotating an optical disc. The computer program configures the optical disc drive to perform consecutive steps of a method for detecting eccentricity of the optica... | 08/14/2007 |
| 7242643 | Optical disk apparatus In an optical disk apparatus, after chucking an optical disk, the optical disk apparatus defers the start of the rotation of the optical disk, and measures the focusing drive voltage at two points, i.e., a point near a center of the optical disk and a point near an ... | 07/10/2007 |
| 7239587 | Approximating topology of optical disc surface A method of one embodiment of the invention is disclosed that outputs an oscillating wave towards a surface of an optical disc. A proximity signal is detected in response to the oscillating wave being output towards the output of the optical disc, and denotes closen... | 07/03/2007 |
| 7239582 | Interpolation of optical disc vertical displacement information A method of one embodiment of the invention is disclosed that determines optical disc vertical displacement information at a number of positions on an optical disc. The method interpolates optical disc vertical displacement information at a number of other positions... | 07/03/2007 |
| 7230896 | Optical disk reproducing device and optical disk reproducing method A bottom hold circuit generates a bottom hold signal (BH signal) from an RFDC signal from an RF amplifier, and sends it to a comparator. The comparator compares a reference level and the BH signal, and generates an Rfdet signal having H level if the BH signal was fo... | 06/12/2007 |
| 7218602 | Method and apparatus for recording optical information, and optical disk A method of recording data optically to an optical disk having a plurality of sectors, in which each sector has a region to be recorded with data, the data is recorded in units of blocks, and the block includes a predetermined number of sectors and is a data unit in... | 05/15/2007 |
