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US20110090775 |
MOTOR DRIVING CIRCUIT
An SPM driver drives a spindle motor. A VCM driver drives a VCM. A DC/DC converter (switching regulator) receives a power supply voltage from an external circuit, and generates a stabilized... |
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US20050141375 |
Operating a rotatable media storage device at multiple spin-speeds
A rotatable media storage device operates using multiple disk spin-speeds, e.g., a reduced spin-speed and a nominal spin-speed. A disk is spun up to a reduced spin-speed and an initial data... |
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US20070171793 |
METHOD AND DEVICE FOR SCANNING A DISC-SHAPED INFORMATION STORAGE MEDIUM
A method (100; 200; 300; 400; 500) for scanning a track of a disc-shaped storage medium (2) comprises the steps of: receiving (101; 201; 301; 401; 501) at least one scanning command; calculating... |
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US20050052974 |
Optical disc apparatus
In an optical disc apparatus 1, an optical pickup 10a for CD/DVD combo and an optical pickup 10b for BD are fixedly disposed across a spindle motor 12 so as to face each other, and the spindle... |
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US20070115773 |
METHOD FOR ADAPTIVELY DRIVING A TRACKING ELEMENT WITH MECHANICAL DEVIATION AND DEVICE USING THE SAME
The present invention provides a method for adaptively driving a tracking element with mechanical deviation and a driving device using the same. The method comprises the following steps: recording... |
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US20050226104 |
Information record/replay apparatus and method
In an information record/replay apparatus for writing information to, and reading information from, a disk medium while communicating with a host apparatus by way of an interface having a first... |
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US20080297096 |
Disk Playback Apparatus And Stepping-Motor Control Apparatus
When the magnitude of a traverse signal exceeds a predetermined level, the value of a microstep drive signal is changed by one microstep angle so that the rotation angle of the stepping motor... |
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US20080019246 |
Magnetic and optical rotating storage systems with audio monitoring
An integrated circuit (IC) for controlling a rotating data storage device comprises a drive module that is implemented by the integrated circuit and that at least one of processes data, stores... |
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US20070121445 |
Optical information reproducing method
Disclosed is a method of reproducing optical information by applying laser light to the medium while rotating a recording medium having concentric information tracks or a spiral information track... |
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US20070047406 |
Optical disk apparatus
An optical disk apparatus includes a carriage actuator that drives the carriage with a two-phase stepping motor. The carriage is provided with an objective lens that condenses a laser beam onto an... |
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US20100020656 |
METHOD AND DEVICE FOR SENSITIVITY COMPENSATION
Method and device for generating a control voltage for a position actuator of a disk drive system for displacing a lens of a pick-up unit to a given X-position. The actuator is operated by an open... |
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US20070274181 |
Digital audio signal reproducing device
A digital audio signal reproducing device includes a system processor, a first rotation disk, a second rotation disk, a first sensor, a second sensor, and a lighting assembly. The first sensor... |
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US20050195718 |
Method for controlling rotating speed of disc
A method for controlling a rotating speed of a disc for use in a disc reading apparatus includes the following steps. Firstly, the disc is loaded into the disc reading apparatus. Then, a start-up... |
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US20070104055 |
Method for setting data carrier speed in a data carrier drive apparatus
A method is described for setting a disc speed in a disc drive apparatus (3) which is in data transfer communication (7) with a host system (2). According to the invention, after a first speed... |
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US20090080302 |
DISK DRIVE AND INFORMATION PROCESSING SYSTEM HAVING THE SAME
A disk drive controls the rotational speed of a disk to an appropriate value. A system controller of the drive stores data read from a disk and read-ahead data into buffer memory. A time interval... |
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US20060109762 |
Method and apparatus for recording and/or reproducing information
The invention described relates to a method and apparatus for recording and/or reproducing information on an information track of an information disc. The method comprising the steps of: a)... |
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US20050141376 |
Control method of recording speed in optical disk drive
The present invention discloses a control method of recording speed in an optical disk drive. Firstly an inserted disk is maintained at a predetermined rotation speed and then writing starts. If... |
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US20150024221 |
ELECTRONIC UNIT, OPTICAL DISK UNIT, DISPLAY UNIT, AND IMAGE PICKUP UNIT
An electronic unit includes: an electronic device; and a protective film including an aluminum oxide layer and silicon oxide, the aluminum oxide layer with which the electronic device is covered,... |
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US20050219977 |
Digital recording/reproducing apparatus and rotating speed control method thereof
A digital recording/reproducing apparatus, such as a DVD recorder, is capable of copying data between a non-volatile memory thereof and a disc at different rotating speeds. By asserting a speed-up... |
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US20130016595 |
METHOD OF DRIVING OPTICAL DISC AND OPTICAL DISC DRIVE USING THE METHOD
A method of driving an optical disc and an optical disc drive using the method is provided. The method includes rotating an optical disc by a spindle motor, transferring an optical pickup... |
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US20070274182 |
Optical disk recording/reproducing apparatus and alternation process method thereof
Within a disk recording/reproducing apparatus for improving a transfer rate when recording/reproducing, and an alternation process method for a disk for it, for recording or reproducing... |
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US20070171797 |
Information recording/reproducing apparatus and updating method of management information for optical disk medium
When user data fails to be recorded in an address of a user data area, the same data is recorded in an address of a spare area. Information indicating that the data for the address of the user... |
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US20110164484 |
OPTICAL DISC PLAYBACK DEVICE AND CONTROL METHOD THEREOF
An optical disc playback device is capable of being transitioned to a sleep mode in consideration of an optical disc status or an optical disc drive device status. An optical disc playback... |
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US20050213453 |
Disk playback apparatus and disk acceleratiion adjusting method
When servo lock cannot be achieved because the number of disk revolutions cannot reach the vicinity of its regular number of disk revolutions, a table value is increased to prolong the disk... |
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US20050201222 |
Driving method of flexible recording disc
An object of the invention is to provide an extremely large capacity disc cartridge which can avoid a head crush and a disc crush and has a high reliability, and a recording and reproducing... |
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US20050128908 |
Apparatus and method of determining optimal velocity for recording on optical disc
An apparatus and a method of determining an optimum recording speed for a medium in a disc drive device, the method includes inserting a medium into the disc drive device, determining when disc... |
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US20060209649 |
Dual-speed optical record carrier recording apparatus
The present invention relates to an optical record carrier recording apparatus and method for recording data on a phase-change optical record carrier (55) storing a state information about the... |
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US20050207300 |
Method for designating disk recording capacity and apparatus therefor
A method of designating a disk recording capacity and an optical disk recording apparatus using the method, where a maximum recording capacity is designated by measuring an external disturbance... |
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US20100315920 |
EXTERNAL OPTICAL DISC DRIVE AND METHOD OF CONTROLLING THE SAME
An external optical disc drive, connected to a bus from which a supplying voltage and a supplying current are outputted, includes: a voltage detector connected to the bus for receiving and... |
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US20080016521 |
Multi-Speed Recording for Multi-Layer Disc
The present invention relates to a recording apparatus, record carrier and method of recording data on at least two layers of a recording medium by using a radiation power, wherein individual... |
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US20090092015 |
Optical disc reproducing apparatus and operation method thereof
An optical disc reproducing apparatus includes: a decode processing circuit configured to generate decoded data by decoding encoded data read out from an optical disc such that the decoded data is... |
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US20100232272 |
WAVE PLATE, OPTICAL PICKUP AND OPTICAL DISC APPARATUS
An optical pickup includes a wave plate on an optical path to be followed by every light beam emitted from three light sources (with wavelengths λ1, λ2 and λ3, respectively) both on their way... |
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US20070147204 |
Optical disk recording method and optical disk recording and reading apparatus
An optical disk recording method wherein a beam is irradiated on an optical disk so that recording or write once of information is carried out, the optical disk recording method includes the step... |
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US20090168621 |
DEVICES AND METHODS FOR DETERMINING A CRITICAL ROTATION SPEED OF AN OPTICAL DATA CARRIER, MONITORING A CONDITION OF AN OPTICAL DATA CARRIER, AND GENERATING A REFERENCE SIGNAL
The invention relates to a device (9, 109) and a method (501) for determining a critical rotation speed of an optical data carrier (1) at which a critical deflection of said optical data carrier... |
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US20140362675 |
EXPOSURE DEVICE, RECORDING MEDIUM, RECORDING DEVICE, AND REPRODUCING DEVICE
There is provided a recording medium including: simple tracks each configured of arranged pits or arranged marks; and grooved tracks each configured of pits or marks and grooves, the grooves being... |
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US20110134736 |
Recording medium, read/write method thereof and read/write apparatus thereof
A recording medium read/write method and apparatus are disclosed. The present invention records version information of a corresponding recording medium as read/write control information within the... |
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US20090003161 |
Method for Determining the Rotation Frequency of an Optical Recording Medium
The present invention relates to a method for determining the rotation frequency of an optical recording medium driven at a constant linear velocity, and to an apparatus for reading from and/or... |
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US20110222382 |
OPTICAL DISC DRIVE AND METHOD FOR READING DATA FROM OPTICAL DISC
An optical disc drive and optical disc reading method according to the present invention is designed to perform a read operation with good stability even on a slim disc that could produce a... |
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US20100271916 |
Optical Disc Apparatus
An optical-disc apparatus comprising: a laser-light source; an objective lens; an aberration-correction lens to be moved in an optical-axis direction according to a cover-layer thickness of an... |
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US20100260023 |
VIRTUAL SPOKE SIGNALS FOR CONTROLLING OPTICAL DISC
An optical disc is rotated at no more than 600 revolutions per minute (RPM) using a spindle motor of an optical disc device (602). One or more input signals are received from one or more sensors... |
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US20130051204 |
OBJECTIVE LENS, OPTICAL HEAD APPARATUS, OPTICAL INFORMATION APPARATUS AND INFORMATION PROCESSING APPARATUS
The present invention provides an objective lens, an optical head apparatus, an optical information apparatus, and an information processing apparatus that improve focal position detection... |
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US20110261665 |
Optical disc with protection code, method for optaining the protection code and respective apparatus for reading of data
The optical disc comprises a substrate layer, a read-only data layer having a pit/land data structure including user data and control data arranged in tracks on the substrate layer, and a... |
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US20110149703 |
OPTICAL DISC APPARATUS AND DATA WRITING METHOD
The present invention provides an optical disc apparatus that changes the number of revolutions of an optical disc on sensing resonance. The optical disc apparatus of the present invention... |
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US20110002200 |
METHOD AND APPARATUS FOR CONTROLLING DATA ACCESS RATE OF AN OPTICAL DISC DRIVER
A method and an apparatus for controlling data access rate of an optical disc player are disclosed. The method includes steps of (1) utilizing a micro-controller to decide whether an action of an... |