Matches 1 - 50 out of 206 1 2 3 4 5 >
Match Document Document Title
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
7072253 Optical disc reproduction apparatus and automatic adjustment method for same  
An optical disc reproduction apparatus is provided for permitting appropriate automatic adjustment to a servo control system, particularly a CD and a DVD-ROM having a BCA. A limit switch 24 is...
7006423 Mark detecting circuit for an optical disk  
A mark detecting circuit that stably and reliably detects the marks for address information from an optical disk having tracks formed in a spiral shape and having waviness with a fixed period. In...
6985415 Offset setting system and method for seeking control  
The invention is an offset setting system for an optical reading/writing apparatus having an optical pickup head reading/writing digital data under a predetermined velocity on an optical storage...
6982938 Method and apparatus for disc recording  
A disc device in which recording is possible in a basic recording area in units of a subarea and startable at any position. Even if the recording cannot help stopping due to some external cause...
6973019 Recording medium reproducing apparatus  
In a recording medium reproducing apparatus that can reproduce a recording medium such as a CD-R or CD-RW recording therein compressed audio data, a track number of three or more digits can be...
6963526 Disc recording apparatus, disc recording method, and disc recording control program  
When data in a volume in the excess of a specification of a disc is recorded on an optical disc (D) (overburn recording), overburn area information indicating a position to terminate data recording...
6947358 Pickup drive controller for optical disc drive  
In an optical disk drive, in order to cancel a lens offset which may occur when performing a seek followed by a read, a seek position must be set several sectors before a target position for the...
6917577 Method for determining position of optic pick-up head and device of the same  
A method for determining the position of an optic pick-up head and the device of the same are disclosed. The number of frames in certain section of the disk are used to determine the position of...
6865146 Signal recording medium, signal recording method, signal recording apparatus, and signal recording/reproducing apparatus  
A signal recording medium has a plurality of recording layers. Each recording layer has tracks for recording information. The tracks have a wobbling structure in which they are wobbled at different...
RE38704 Optical disk recording method employing a plurality of recording areas and apparatus therefor  
An optical disk apparatus comprising a reproduced signal detector which digitizes a reproduced signal from an optical disk, a broadband synchronizing clock signal generator for generating a...
6791922 Information recording device that can resume recording process at correct location on recording medium  
An information recording device is provided. The information recording device includes an end detecting unit, a timing management unit, an encoder, and the like. In a case in which the information...
6778482 Moving position detecting apparatus of a mobile element and a disk apparatus using the same  
A position detecting apparatus detect the moving position of a mobile element. The apparatus includes the mobile element moving reversibly along a specified running path, a conductive electrode...
6757226 Method for reducing the turn-back of the track-seeking control in an optical storage device and apparatus thereof  
A method for reducing the turn-back in response to an actual and a target speed in an optical storage device. The method includes the following steps: (a) determining whether the turn-back of the...
6751176 Optical disk with buffer area and recording and reproducing apparatus and methods  
An optical disc that has a recognition mark area behind a recorded area and in which the last data in the recorded area is stably accessed, the recognition mark area can be accessed without...
6717897 Optical pickup apparatus, optical disc apparatus, and track recognition signal detection method  
A primary spot and a secondary spot are formed on an optical disc 101 . The primary spot is used for recording and reproduction. The secondary spot is positioned apart from the primary spot. The...
6687207 Optical recording apparatus for recording information on a write-once disk or an erasable optical disk  
An optical disk recording apparatus for recording information onto a write-once or erasable optical disk has a memory component including a table of prerecorded correction curves consisting of...
6633524 Method for controlling rotation of an optical disk during a zone change in a data read out operation  
A method for controlling the number of disk revolutions in a disk drive using a zone CLV control system to reduce or eliminate the possibility of read-out errors when the data read-out position is...
6515949 Storage apparatus  
When a migration is predicted and judged of continuous recording and regeneration to an adjacent next optimum condition effective area in the course of data sequential processing for recording or...
6504804 Moving body position detecting method and disc drive apparatus  
A plurality of periodical signals are generated as the moving body moves. The periodical signals are given respective fundamental values. The fundamental value of one of the periodical signals that...
6430124 Apparatus for scanning optical recording media having a scanner and a travel measuring device  
The present invention relates to an apparatus for reading from and/or writing to optical recording media having a scanner for scanning the recording medium, a coarse drive for moving the scanner...
6359848 Optical record carrier and scanning device  
An optical record carrier ( 10 ) comprises a recording layer for recording information in a pattern of optically detectable marks in substantially parallel tracks ( 11-15 ). Neighboring tracks are...
6333901 Disc reproducing apparatus for determining a track jump  
A disc reproducing apparatus is provided which is adapted to scan information tracks to read information recorded on an information recording medium. This disc reproducing apparatus comprises:...
6320828 Servo system having track crossing detection for an optical disk drive system  
A difference counter in a servo system includes RX signal processing circuitry, TX signal processing circuitry, and a latch. The RX processing circuitry includes a RX z-hold (zero order) circuit, a...
6320824 Method and apparatus for controlling and reversing the position of optical pickup head  
A first electrically conductive member is provided on a control portion of a limit position switch for detecting whether or not an optical pickup head reaches a predetermined limit position. A body...
6317393 Method and apparatus for controlling an optical head relative to an initial track and a target track on a storage medium having data arranged thereon in tracks  
A method for moving an optical head from an initial track to a target track on a storage medium having data arranged in tracks thereon. The method includes determining a track crossing number...
6295254 Seek control method for a disk device used for reading/writing data from and to a disk recording medium  
A method for performing a seek control operation for a disk device of the type having a pickup for reading/writing data from and to a disk is provided. The method includes the steps of counting...
6292449 Optical disk apparatus  
A disk is rotated by a spindle motor. The spindle motor is controlled such that the disk is rotated at a constant linear velocity (CLV) against a recording head. A signal read by a reproducing head...
6282156 Method of fast tracking for an optical pick-up and apparatus thereof  
A method for reducing the travel time for an optical pick-up and an apparatus thereof are provided to precisely control the tracking of said optical pick-up. The method comprises the steps of: (i)...
6215739 Highly accurate disc apparatus for recording/reading information in a disc means where discs are changed in the apparatus which eliminates track errors due to disc variations  
A disc apparatus includes a micro-computer. The micro-computer causes a pickup to move to a predetermined position. A track pitch is calculated from a distance over which the pickup has moved and a...
6205101 Image processing apparatus and method  
An image processing apparatus includes two devices which reproduce data on a disk. The devices operate independently of one another, thereby enabling image data from the disks to be processed rapidly.
6181659 Optical information recording method for optical information recording apparatus  
An optical information recording apparatus and an optical information recording method which are capable of reducing jitter generated from a disc and capable of decoding signals stably at high...
6181658 Optical record carrier and apparatus for scanning such a record carrier  
An optical record carrier comprises a recording layer for recording information in a pattern of optically detectable marks in substantially parallel tracks. The tracks comprise alternating first...
6144627 Data recording and reproducing apparatus and method with phase error detection  
Even if an external disturbance resulting from a defect on a magneto-optical disk disturbs a loop for generating a reference clock and consequently a phase error is increased, it is possible to...
6144626 Optical information recording-reproducing apparatus for effecting recording/reproduction of information by use of a plurality of light spots  
In an optical information recording-reproducing apparatus, a spot for recording and a plurality of spots for reproduction irradiate, from an optical head, an information recording medium having a...
6055219 Method of switching the motor operation of an optical disc drive between the constant linear velocity mode and the constant angular velocity mode  
A method is provided for use on an optical disc drive, which can automatically detect the current radial position of the pickup head to thereby switch the motor operation between the CLV (constant...
6028828 Disk type recording medium and disk recording and reproducing device  
A disk type recording medium and a disk recording and reproducing device for use in constant linear velocity and zone constant angular velocity systems wherein the disk type recording medium has...
6011763 Disk recording system and a method of controlling the rotation of a turntable in such a disk recording system  
A method and apparatus are provided for controlling the rotation of a turntable relative to a recording head in a disk recording system. A first, voltage signal is generated corresponding to the...
6009056 Optical disc data reproducing method and optical disk driver  
In the operation to access data on a disk, the data reading operation is enabled before the rotary speed of the spindle motor of the disk is completely regulated to thereby minimize the access time...
6009052 Method and circuit for controlling head position  
A head positioning method controls a position of a servo head from a first arbitrary track position on a disk to a second arbitrary track position on the disk during a seek operation, where the...
Matches 1 - 50 out of 206 1 2 3 4 5 >