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| Number | Title | Issue Date |
| 7986599 | Drive device A drive apparatus of the present invention includes a recording/reproduction section and a drive control section. The drive control section at least performs a process including: allocating a contiguous area to a specific location in the user data area other than th... | 07/26/2011 |
| 7961577 | System and method for generating an output signal indicating a specific area on an optical disc utilizing an adjustable specific time Disclosed is a system for generating an output signal indicating a specific area on an optical disc. The system includes an optical pick-up head signal generator, a detecting apparatus, and an output signal generating apparatus. The optical pick-up head signal gener... | 06/14/2011 |
| 7385898 | Apparatus and method for determining precise pickup access to desired area of optical disc An apparatus and a method determine an area of an optical disc in which an inner area and an outer area of the optical disc having an absolute time of 99 minutes are distinguished from each other by referring to a number of ATIP syncs. The method includes counting t... | 06/10/2008 |
| 7362678 | Recording medium for storing write protection information and write protection method thereof An apparatus for writing and/or reading write protection data using a recording medium storing write protection information, and a write protection method and apparatus for protecting data recorded on a recordable and/or rewritable disc from unwanted overwriting or ... | 04/22/2008 |
| 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 |
| 7324420 | Optical disc and method of identifying recording layer An optical disc in which a physical address of each smallest recording unit and a recorded address increase or decrease on first and second recording layers, and a method of identifying the recording layers. Embodiments are provided for discs having first and second... | 01/29/2008 |
| 7324419 | Focus control via AC input signal A method of mapping a surface of a printable medium comprises illuminating the surface with electromagnetic radiation and focusing the electromagnetic radiation with a focusing means. The method also includes modulating the position of the focusing means using an ac... | 01/29/2008 |
| 7315508 | Multi-layer optical disk and method of producing multi-layer optical disk A multilayer optical disk including a plurality of information storage layers to/from which information is recorded and/or reproduced by an optical head. The plurality of information storage layers are stacked through intermediate layers and each information storage... | 01/01/2008 |
| 7289397 | Method and apparatus for determining position of optical pick-up head A method for determining the position of a pick-up head involves retrieving the respective parameter values relating to the linear velocity and angular velocity of the pick-up head at a certain place on the optical disk, and then calculating the ratio of the paramet... | 10/30/2007 |
| 7283444 | Method and device for determining disk size and stopping a rotating disk without using frequency generator signals A method and device for determining the presence or absence of a disk and/or a disk size without using FG signals, are provided. The method includes placing a pickup at a first zone on the optical recording medium, the first zone located between an outer radius of a... | 10/16/2007 |
| 7280448 | Positioning control device and positioning control method A positioning control device and method in which the relative position error in tracking is reduced by using the periodicity of position shift. The positioning control device comprises a position detecting unit for measuring the relative position error between the d... | 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 |
| 7274642 | Data recording medium, data recording method and apparatus, data reproducing method and apparatus, data transmitting method, and data receiving method A recording medium having at least a lead-in area, a data recording area to which data is recorded, and a lead-out area, wherein the data recording area comprises a first recording area portion to which data that has been encoded with an error correction code is rec... | 09/25/2007 |
| 7244106 | Process and device for flow control of an electrical motor fan A method and configuration from maintaining a constant of air to a protective helmet (4) from a fan (3) in a battery powered fresh air unit. The fan (3) is a radial fan with a filter (5) positioned on the suction side of the fan and is op... | 07/17/2007 |
| 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 |
| 7233557 | Method for identifying location on an optical disk A method is disclosed for positioning an optical labeling mechanism substantially close to a particular track of a labeling surface on an optical disk. The method can include the operation of positioning the optical labeling mechanism adjacent to the particular trac... | 06/19/2007 |
| 7230900 | Optical disk apparatus and computer readable recording medium storing program An optical disk apparatus for forming an image on an optical disk according to dot data which defines density of dots of the image, the optical disk apparatus includes: a framing unit which makes a frame data by grouping a plurality of unit data, wherein when the do... | 06/12/2007 |
| 7226889 | Optical information-recording medium An optical information-recording medium includes: a substrate; an electronic information-recording layer on the substrate in which digital information is recorded by the light applied from the side of the substrate; a reflection layer on the electronic information-r... | 06/05/2007 |
| 7227833 | Writing scheme for an optical recording medium A writing scheme for writing an information to an optical recording medium by forming mark areas, e.g. pit areas, corresponding to a predetermined state of said information on a recording surface of said optical recording medium. The writing scheme is adapted to mod... | 06/05/2007 |
| 7224646 | Method of forming image on optical disc by radialy vibrating laser beam under focus control An optical disc recording apparatus can draw an image by radially vibrating a laser beam under stable focus control. A pickup radiates the laser beam onto the optical disc rotated by a spindle motor. A focus servo controller maintains a constant spot diameter of the... | 05/29/2007 |
| 7221630 | Information recording medium, information recording and reproduction method, and information recording and reproduction apparatus An information recording medium includes a data area for recording data; and a drive information area for recording at least one piece of drive information. The data area is divided into a plurality of segmented areas in a radial direction of the information recordi... | 05/22/2007 |
| 7222162 | Contents downloading system and method thereof A contents downloading system and a method thereof. According to the system, when a media device is connected to a detachable user terminal device, a device identifier is transmitted to the user terminal device from the media device. The user terminal device then tr... | 05/22/2007 |
| 7215625 | Optical disk recording apparatus that records a visible image on an optical disk An optical disk recording apparatus is provided that includes an optical pickup, an image encoder that generates data corresponding to a visual image to be drawn in a recording region of an optical disk, an LD control unit that controls the optical pickup and record... | 05/08/2007 |
| 7212481 | Searching method and device for a recording medium having overlapped time address A method and device for searching a recording medium are provided. The recording medium has a management information area of which location information is overlapped with that of a program area. The method for determining an area on a recording medium having an over... | 05/01/2007 |
| 7196982 | Information recording apparatus, information recording method, program storage medium and computer data signal which allow computer to function as information recording apparatus An information recording apparatus is provided with: a receiving device for receiving record information of a first format; a converting device for converting the first format of the received record information into a second format that is different from the first f... | 03/27/2007 |
| 7193935 | Method and apparatus for controlling positioning of a pickup A disc drive to control a home-in mode and method thereof includes a pickup unit irradiating a light beam on a disc loaded in the disc drive, a motor moving the pickup unit along a radius direction of the disc, and a control unit detecting and storing position infor... | 03/20/2007 |
| 7184383 | Medium position sensing A method of determining coordinates for a storage medium includes: determining diffraction data from a plurality of diffraction patterns corresponding to diffractive markers of the medium; and combining the diffraction data to determine composite coordinates for the... | 02/27/2007 |
| 7177240 | Optical disc system and method for controlling movement of an optical pickup to an innermost perimeter of an optical disc using track information Optical disc systems and methods for controlling movement of an optical pickup to an innermost perimeter of an optical disc using track information are provided. For example, an optical disc system includes an optical pickup that includes a tracking actuator, a focu... | 02/13/2007 |
| 7169615 | Method of authenticating polymers, authenticatable polymers, methods of making authenticatable polymers and authenticatable articles, and articles made there from Disclosed is a method of authenticating that a test polymer is an authenticatable polymer, wherein the authenticatable polymer has an authentication signal and comprises a substrate polymer and an optically variable tag, the optically variable tag having a fluoresce... | 01/30/2007 |
| 7149172 | Information recording apparatus, an information recording method, a program, a recording medium, and an information recording system An information recording apparatus is capable of recording data and management information of an information recording medium in a plurality of data recording formats. Typically, a DVD+RW is considered to be a DVD+R disk, when data and management information of the ... | 12/12/2006 |
| 7149179 | Optical disc having variable spare area rates and method for variably setting the rate of spare areas in the optical disc In a method for setting variable areas of an optical disc which variably sets spare area rates of a prescribed quantity provided for preparing a liably-occurring recording error due to a defect of the optical disc having the variable spare areas, the total quantity ... | 12/12/2006 |
| 7149157 | Method and apparatus to control a step motor of an optical disk driving system An apparatus to control a step motor in an optical disk driving system to move a sled which transfers a pickup unit, including a playing unit, a coarse search unit, and a driving unit. The playing unit generates a first step pulse at a first interval of time set by ... | 12/12/2006 |
| 7136339 | Positioning control apparatus and method capable of reducing relative position error without increasing gain and frequency band of transfer characteristics of control system A positioning control apparatus for controlling a moving member to trace the position of a target member which almost equally repeats the position shift at a predetermined period comprises a position detector for detecting a relative position error, a first adder fo... | 11/14/2006 |
| 7129968 | Image forming apparatus capable of forming image on optical disk, and image forming method An image forming apparatus includes: a spindle motor (130) for rotating an optical disk (200); an optical pick-up (100) for applying laser light to the optical disk which moves in a radial direction of the optical disk; a stepping motor (140 | 10/31/2006 |
| 7126889 | Tracking error detector A circuit to improve the SN characteristic of a tracking error signal. This tracking error detection circuit is formed as a push-pull system utilizing a quadrant type photo-detector and provided with 4 gain control amplifiers 20, 22, 24, and 26, 4 bott... | 10/24/2006 |
| 7123574 | Recording medium, method and apparatus for recording, and method and apparatus for reproducing In a recording medium which is circular and has first and second recording layers, the first and second recording layers each include one or more first tracks extending concentrically or spirally and one or more second tracks extending concentrically or spirally, ea... | 10/17/2006 |
| 7116623 | Optical information recording method, optical information recording device and optical information recording medium An optical information recording device includes a linear velocity setting circuit for setting a first linear velocity v1 and a second linear velocity v2 higher than the first linear velocity v1 for a optical information recording medium, a reco... | 10/03/2006 |
| 7116625 | Apparatus and method for detecting a position of a pickup An apparatus and method thereof detect a location of a pickup in an optical disc. A pickup reads and writes a signal from or to the optical disc. A spindle motor rotates the optical disc. A controller measures a rotational speed of the spindle motor to detect a curr... | 10/03/2006 |
| 7106666 | Optical disk apparatus and method capable of compensating for instability track jump and focus jump During a normal operation, a tracking control signal from a tracking controller is supplied to an adder via a first switch and to a radial deviation component detector. The radial deviation component detector determines a radial deviation component EC of AC caused b... | 09/12/2006 |
| 7099248 | Method of changing a rotating mode between constant angular velocity and constant linear velocity The present invention relates to a method of changing a recording mode from CAV (Constant Angular Velocity) mode to CLV (Constant Linear Velocity) mode in the middle of recording data to a disk recording medium. A method according to the present invention reads ATIP... | 08/29/2006 |
