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RE43179 Optical disk drive for discriminating types of optical disks  
After an optical disk drive according to the present invention has been loaded with an optical disk and before the operation of recognizing the type of the given disk is finished, the drive...
8098555 Optical disk device with coma aberration correction  
The optical disc apparatus according to the present invention includes a tilt detecting means; a coma aberration correcting means; and a spherical aberration correcting means. Based on the result...
8059501 Optical disk drive for scanning an optical disk with a scanning velocity and method for scanning an optical disk with a scanning velocity  
An optical disk drive and a method for scanning an optical disk that includes a substantially circular track with a scanning velocity is provided. A servo control signal (SCS) is determined based...
8040768 Information recording apparatus  
An information recording apparatus such as an optical disc that can avoid an unrecordable condition between a power-on operation and an available state for recording thereby to solve a problem that...
8036082 Optical disk drive carry out focus pulling-in with improved operation accuracy  
An optical disk drive includes a servo control unit 7 for causing an optical disk A to be driven; an optical pickup 2 for reading recorded data from the recording surface of the optical disk A...
7907486 Rotation responsive disk activation and deactivation mechanisms  
Embodiments of methods and systems for controlling access to information stored on memory or data storage devices are disclosed. In various embodiments, fluid-mediated modification of information...
7835239 Method for reading/writing data for a disk drive  
A method for reading/writing data of a disk drive that includes a spindle motor for rotating a disk and a head for reading/writing data from and to the disk. The method includes the steps of; (i)...
7804753 Optical disk drive for discriminating types of optical disks  
After an optical disk drive according to the present invention has been loaded with an optical disk and before the operation of recognizing the type of the given disk is finished, the drive...
7800996 Rotation speed control for recording information  
A disc recording device has a mode control unit for switching the device either to a read mode or to a write mode. Reading and writing can be alternated for simultaneous recording and reproducing...
7800997 Method and apparatus for generating frequency-multiplied frequency generator signal used in optical drive  
An optical drive servo control system comprises: an optical pickup, for accessing an optical disc and generating an optical signal; a spindle motor, for rotating the optical disc and outputting a...
7787336 Apparatus and method of processing signals of an optical disk recording/reproducing apparatus  
A signal processing apparatus of an optical disk recording/reproducing apparatus and a signal processing method performed thereby are provided. The signal processing apparatus may include an...
7751687 Data processing apparatus, data processing method, data processing system, program, and storage medium  
A data processing apparatus for outputting a plurality of picture data forming reproduced data to a reproduction apparatus for reproduction, the data processing apparatus having a processing...
7684295 Recording medium, method of recording control information on a recording medium, method of recording/reproducing data using control information, and apparatus for recording/reproducing data using control information  
The present invention provides a method of recording disc control information in a recordable optical disc including at least one recording layer, and more particularly, a method of recording...
7525884 Position control apparatus and method for an optical disk recording/reproducing apparatus with interlinked on/off of a phase compensator and on/off of a servo loop  
The present invention aims to obtain a position control device which, even if the range within which a mechanical part can be pulled in for position control is narrow, enables quickly stabilizing...
7512048 Method and apparatus for reading optical discs having different configurations  
A player is provided that is capable of playing discs of either a first or a second configuration. Both types of discs can be double-sided optical discs formed with data tracks. In one...
7423942 Optical disc device for recording different types of optical discs and data recording method for optical disc device  
In an optical disc device comprising: a pickup 3 having a laser diode and generating a laser beam for recording onto an optical disc 1; a disc motor 2 that drives the rotation of an optical disc...
7408855 Disk drive with an adjustable motor and method for adjusting rotation speed of the motor  
A method for adjusting rotation speed of a driving motor in a disk drive prior to power on of a computer, includes: (i) inputting an external signal into the disk drive; (ii) converting the...
7327648 Player with rotational control for double-sided optical discs  
A double-sided optical disc, such as a DVD-18 disc, is formed with data tracks on each layer. The tracks on one side are oriented along one spiral while the tracks on the other side are oriented...
7319646 Focus operation for an optical disk device  
A disk device in which at the recovery job of a focus pull-in operation, a CPU supplies servo control means with the respective correction values of the rotational speed of an optical disk and the...
7319651 Recording apparatus and recording method  
The amount of light reflected from a disk is detected, and it is determined according to the amount of reflected light whether the disk is a recordable disk or a rewritable disk. The disk is...
7289407 Methods for establishing audio track digital audio extraction speed  
A method for recording audio data to optical media is provided. The method includes obtaining a number of audio tracks on a source optical media and setting a source optical media device to a...
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...
7113462 Method for adjusting the writing speed of a CD drive  
A method of adjusting the write speed of a CD drive includes writing data from a CD drive to a disk at a first speed during a first preset time. If, at the end of the first preset time, the data...
7079459 System and method for performing a spin motor startup operation  
A system and method for controlling operation of a motor system that addresses the design challenges for the small form factor optical disk system. The present invention includes starting the...
7068570 Reproducing apparatus  
A reproducing apparatus capable of reproducing the data to be reproduced correctly by judging the lead-in region of first session on a multi-session disc. The reproducing apparatus reproduces a...
7065018 CLV system and method using PSA lookup  
A system and method for controlling operation of a motor system that addresses the design challenges for the small form factor optical disk system. The control system can be operable to read a...
7057988 Device and method for controlling optical recording/reproducing device  
Method and device for controlling an optical recording/reproducing device, for detecting a wobble signal in advance during free running when only a focus servo is turned on, carrying out wobble...
7046597 Optical disk apparatus for recording information at a recording density proportional to the actual information volume and disk nominal capacity  
A method is designed for recording contents information along a track of an optical disk of a writeable type. A volume detection step is carried out for detecting an actual volume of the contents...
7035184 Optical disk apparatus with optimal erasing speed  
An optical disk apparatus which can record data by means of transition between an amorphous state and a crystalline state and enables overwriting of data. Test data are recorded into a test area of...
7031242 Method of controlling rotation of optical recording medium at two or more rotational speeds, and storage apparatus employing same method  
A storage apparatus rotates an optical recording medium at two or more kinds of rotational speeds. The rotational speed is decreased when a read or write margin becomes less than or equal to a...
7020053 Optical disc apparatus  
In an initial operation of an optical disc apparatus for reading out information data recorded in the innermost data recording area on the optical disc, a main processor judges whether periods...
6977878 Method of adjusting rotation speed of optical disc drive  
The present invention discloses a method of adjusting a rotation speed of an optical disc drive for a spindle motor controlled by a host to rotate and read an optical disc. First, it is determined...
6968451 Method for operating a disk drive during boot process at a slow rate of rotation less than a fast rotation rate for reading non-boot data  
When a system boot procedure is initiated in a computer having a disk drive including one or more disks, the one or more disks are rotated at a first, slow rate while boot data are read from the...
6958964 Apparatus for reproducing data from an optical disc inducing vibration and method thereof  
A method and apparatus for reproducing data from an optical disc in which a disc inducing vibration is detected and the speed of the disc is adjusted to an appropriate speed which does not cause...
6952386 Disc speed control device  
A disc speed control device for use in a disc player and/or recorder having a pick-up for reading/recording data. The device comprises an inner loop which regulates a determined disc rotation speed...
6940793 Disk device and method of changing rotational speed of disk device  
A disk drive includes a disk motor for rotating a disk, a disk motor driving unit for driving the disk motor, and a controlling unit for controlling the disk motor driving unit. When an upper limit...
6879552 Information recording and reproducing system enabling a selection of whether or not to perform an interruption and resumption of a data-recording  
An information recording and reproducing system comprises a host device, and an information recording and reproducing device connected with the host device via a host interface. The host device...
6836454 Method and apparatus for reading and writing information onto and from information recording disks  
In an apparatus and method for information storage and retrieval, information is retrieved from the storage apparatus in a manner which includes varying an operational parameter of the storage...
6704261 Spin motor control in an optical drive  
A system and method for controlling operation of a motor system that addresses the design challenges for the small form factor optical disk system. The control system can include a lookup table...
6600708 Speed control of optical disc player based on duration of a control signal  
A method for controlling speed of a spindle motor of an optical disc player is provided by the invention. The method provided accept a on-line or real-time control signal asserted by a user and...
6552986 Apparatus for recording and reproducing data  
A data recording and reproducing apparatus includes a recording disabled state determining device for determining whether or not the optical disc is in a recording disabled state, in which the data...
6512725 Method for controlling speed of an optic disk drive  
A method for controlling the speed of an optic disk drive comprising the steps of presetting a transmission speed of an optic disk drive to a lower value, and resetting a timer; pressing a retract...
6459668 Disk type reproducing apparatus and revolution control method  
The number of revolutions of a disk is once increased to a higher level than a resonance frequency of a rotation support system at the startup of rotation of the disk, and subsequently servo...
6411574 Coding method for high-capacity storage medium and the decoding means for the same  
A coding method for high-capacity storage medium is provided. The the physical location of the code is arranged in an annulus area at inner side of the inner most edge of the compact disk and/or...
6246651 Disk apparatus in which an improved current supply control is performed to effectively reduce a current consumption  
A disk apparatus in which a control unit performs a seek control includes a disk motor which rotates a disk placed at a loaded position in the disk apparatus. A motor driver controls the disk motor...
6026068 Optical disk apparatus  
A constant linear velocity control (CLV control) for controlling a spindle motor so as to set a linear velocity in a track circumferential direction to be constant and a constant angular velocity...
5926449 Pre-calibration system and method for CD-ROM drive speed optimization  
A system and method for pre-calibrating a CD-ROM drive for each CD-ROM disc inserted into the drive for maximizing the drive's performance without degradation in data transmission. When a CD-ROM...
5835462 Information carrier for different recording processes and device for recording therein  
Information carrier and recording device for recording an information carrier. The information carrier according to the invention is of an optically inscribable type, such as a CD-E or CD-WO....
5825735 Reproducing apparatus with dampling rate convertor for recording medium having different respective sampling rates  
A second generation CD provides improved sound quality over that provided by a first generation CD while remaining compatible with it has a higher sampling rate and has a data format of 1-bit ΔΣ m...
5815478 Method of driving a CD-ROM drive  
A method of driving a CD-ROM drive is provided which includes the steps of setting an initial driving speed of a disk to a predetermined N× speed, and measuring a length of time t required for ...
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