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US20050025013 Stable write trial process with respect to optical record medium  
Provision is made to perform a write trial process in a stable manner at all times in a write trial area for the purpose of determining optimum recording power. Sub-areas of the write trial area...
US20070206466 OPTIMUM POWER CONTROL FOR OPTICAL STORAGE MEDIA  
An optimal power calibration process in which an OPC process is performed on the outer OPC area (12) of an optical disc (10) at a plurality of write speeds a, b and c, and an OPC process is also...
US20050128910 METHOD FOR DETERMINING A THRESHOLD WRITE-IN POWER OF A COMPACT DISC AND RELATED COMPACT DISC DRIVE  
A method for determining a threshold write-in power of a compact disc (CD) includes the following steps: (a) recording M test data into M sectors of an outer area of the CD with a pickup by...
US20060262683 Optimum power calibration method and optical disk drive  
An optimum power calibration method is provided and is implemented for writing a rewritable optical storage medium including a power calibration area. The method includes the steps of determining...
US20070217306 Optical disc apparatus and method of writing information to an optical disc  
An optical disc apparatus may write information to an optical disc by forming a mark and a space on the optical disc. The optical disc apparatus may include a write stopping unit, a deviation...
US20090238053 DIGITAL VIDEO RECORDER WIDE DYNAMIC RANGE OPTICAL POWER CALIBRATION  
A method and apparatus are presented for optimizing write operations for optical storage media. A determination is made, at least in part by iteration, of a next power range and a current score...
US20080117754 Calibration method for Optimum Power Control (OPC) of laser write strategy in an optical storage device  
A calibration method for Optimum Power Control (OPC) of laser power in an optical storage device comprises selecting a plurality of first sections on an optical disc; applying a first laser write...
US20090290461 OPTIMIZING CALIBRATION SYSTEM  
An optical scanning device scans a medium via a beam of radiation. The device has a head for providing the beam, beam control means for controlling the beam to generate a scanning spot, a...
US20060171289 Test disk  
With conventional test discs, changing them takes much time when a pickup is subjected to signal evaluation with respect to DVD- family discs (DVD-R and DVD-RW) and DVD+ family discs (DVD+R and...
US20070121452 Test disc and drive verification method  
Data of capacity of about one-severalth of full capacity of a layer 0 and a layer 1 is recorded in a test disk in a range from the layer 0 to the layer 1, and middle areas of the layer 0 and the...
US20090067305 DUAL-BEAM LASER BEAM RECORDER, AND METHOD FOR CONTROLLING A DUAL-BEAM LASER RECORDER  
The present invention relates to a method for controlling a dual-beam LBR (Laser Beam Recorder) (56) suitable for mastering a record carrier (60) by writing data in the record carrier in circular...
US20080101185 System and method for closed loop power control calibration  
A system for calibrating a closed power control loop includes an adder configured to inject a test signal into an adjustable element, a first peak detector configured to determine an amplitude of...
US20060239166 METHOD OF DETERMINING A WRITE STRATEGY  
A method of determining a write strategy when storing data on an optical disc in an optical storage device includes detecting a characteristic of the optical disc, determining an initial write...
US20110116351 Servo Controller and Optical Disk Device  
In a servo controller and an optical disk device (FIG. 4), the following performance for disturbance is improved. By disposing a characteristic change section to change a characteristic to improve...
US20070286042 Adjustment method of optimum write power and optical write/retrieval device  
A write power adjustment method and optical read/write apparatus for accurate optimum write power setup. Different levels of write power Pwm are used to perform a test write and calculate a...
US20070253299 Optical disc apparatus and data writing method therefor  
When an optical disc apparatus of the present invention writes to an optical disc, it detects the level of the drive voltage for its laser drive circuit and, based on the detected level, adjusts...
US20070115775 Method of determining optimum write power of optical disk and optical disk driving apparatus  
A method of determining an optimum write power of a recordable optical disk to control an optimum power of the recordable optical disk, and an optical disk driving apparatus using the same, the...
US20080239898 Calibration of Relative Laser Intensities in an Optical Storage System  
In conventional one-dimensional optical storage systems, the data is arranged in a linear fashion, and the format is read out by a single spot. A two-dimensional encoded disc is different, because...
US20090268572 RECORDABLE OPTICAL STORAGE SYSTEMS  
A last optimum parameter value control method is disclosed, with a laser parameter value being adjusted in a predetermined sequence at an ADIP/ATIP frame of an optical recording medium. Jitter is...
US20080267027 Method and Apparatus for Optimizing Optical Disc Writing Strategy  
The present invention provides a method and apparatus for optimizing optical disc writing strategy. The method for optimizing optical disc writing strategy comprises the steps of obtaining the...
US20060256685 RECORDING SYSTEM FOR LIGHT-SENSITIVE SHEET  
The present invention relates to a system for recording a datum onto a pixel on a light-sensitive sheet. The main component of the system is a recording unit, which further includes a...
US20070058506 Apparatus for controlling erasing power level and method using the same  
An apparatus for controlling an erasing power level, which is capable of optimally setting a power level applied to a disc when erasing a test period in an OPC (Optimum Power Control) area of the...
US20050068871 System and method of determining optimum power for writing to an optical disc  
A method of determining optimum power for writing to an optical disc comprises performing a power calibration test that comprises writing test data to a user data area on the optical disc, and...
US20090122674 Optical Disc Recording and Reproduction Device and An Optical Disc Recording and Reproduction Method  
Trial writing is made by recording waveform different from that used to record information in a disc. In the trial writing, particularly, the strategy having short cooling time or large cooling...
US20090310453 OPTICAL DRIVE AND READ POWER ESTIMATION METHOD  
A method of determining a maximum allowable read power for a drive-record carrier combination is described. The method finds a forward-sense setpoint value to control a light power control loop,...
US20060233075 METHODS OF CALIBRATING SERVO SIGNAL BIAS FOR OPTICAL DISC  
Read focus error (FE) bias is calibrated on an embossed area of the optical disc. OPC is then performed with the calibrated servo signal bias to obtain a write power level. Data are written on and...
US20050152247 Disk drive  
A disk apparatus includes a DSP (Digital Signal Processor), and the DSP performs a test writing and a test reading on a magneto-optical disk rotated in a ZCLV system to obtain an optimal...
US20080198711 Power Calibration Method For Visible Label Recording  
In summary, the present invention provides an efficient method of calibrating power for writing visible labels on an optical record medium. If the writing power is too low, the label will have a...
US20100027392 APPARATUS AND METHOD FOR CALIBRATING OPTICAL STORAGE DEVICE  
An apparatus for calibrating an optical storage device includes a clock generator, a jitter meter, and a calculation unit. The clock generator is utilized for providing a clock signal; the jitter...
US20080123488 APPARATUS AND METHOD FOR CONTROLLING TRACKING ERROR BALANCE IN OPTICAL DISC APPARATUS  
A method of controlling a tracking error balance in an optical disc apparatus, and the optical disc apparatus are discussed. In an embodiment of the present invention, when a tracking error...
US20070140083 Method and apparatus to determine an optimum reproducing condition on an optical recording medium  
A method of determining an optimum reproduction condition of a first mark recorded on an optical recording medium that is smaller than a resolution of a pickup to reproduce the first mark. The...
US20060203693 Optical disc apparatus and method of erasing information recorded thereon  
In an optical disc apparatus, before the information already existing on an optical disc is erased, the information recorded in a user data area of the optical disc is test-erased with laser light...
US20050265184 Optical information recording apparatus  
An optical information recording apparatus is suitable for detection of deviation between a strategy and a record pattern. Test record is performed on an optical recordable medium using a...
US20080151715 Disc Apparatus  
A disc apparatus comprises: an optical pickup for irradiating a laser beam onto an optical disc; a reproduction signal detection unit for detecting a reproduction signal when reproducing data; a...
US20070291606 SELECTIVE PERFORMANCE OF OPTIMUM POWER CONTROL PROCESS  
A power control process in which an inner region optimum power control (“OPC”) value of an inner region of an optical disc is measured at a base speed is selectively performed. A predicted outer...
US20090303849 OPTICAL PICKUP DEVICE AND RECORDING/REPRODUCTION DEVICE  
An optical pickup device includes: a first light source for emitting recording laser light; a second light source for emitting reproducing laser light having a wavelength different from a...
US20060164940 Optical information recording/reproducing device and recording light intensity learning method  
There is provided an optical information recording/reproducing apparatus that learns a recording power so as to determine an optimum recording condition under which the recording power is...
US20070019523 Writing power determining method and optical disc apparatus  
A recording power determining method comprises writing data consecutively into a plurality of test blocks of an optical disc while changing recording power in such a manner that the arrangement of...
US20080273432 PROCESSING METHOD OF OPTICAL DISC RECORDING/PLAYBACK SIGNAL, OPTICAL DISC RECORDING/PLAYBACK DEVICE AND PROGRAM  
A processing method of an optical disc recording/playback signal includes: measuring a length of a first mark of a predetermined coding length which appears immediately following a shortest space...
US20070177473 Writing condition optimizing method and apparatus, and optical recording medium  
A method of optimizing a writing condition of an optical recording medium, including writing test pattern data with the writing condition on the optical recording medium, comparing an error...
US20050030860 Method and system for optical medium power calibration  
Power settings for writing information to an optical medium are adjusted to compensate for variations in the optical medium from expected characteristics, such as recording layer variations, disc...
US20080239900 Optical disc reproducing apparatus  
A DSP of a disc player includes a record signal obtaining portion for obtaining an all sum signal that is a total sum of electric signals corresponding to all reflection light obtained by an...
US20080130439 METHOD FOR DYNAMICALLY DETECTING WRITING QUALITY OF A RECORDABLE OPTICAL DISC  
The present invention discloses a method for dynamically detecting writing quality of a recordable optical disc. According to the method, firstly a current detecting position located on a program...
US20080259756 OPTICAL DISK APPARATUS  
A laser power which is lower than an optimum reproduction laser power is set as an initial value. The reproduction laser power is increased from the initial value while trial reproduction is...
US20050117499 Optical information recording and reproducing apparatus, method and computer program for determining a value of current supplied to a laser light source, and computer readable storage medium storing the program  
In a method of determining a value of current supplied to a laser diode, a laser light beam of predetermined power intensity is emitted continuously from a laser diode at a constant power...
US20090116353 Circuits, Architectures, Apparatuses, Systems, Algorithms and Methods and Software for Timing Calibration for Optical Disc Recording  
The present disclosure relates to methods, software, and apparatuses for correcting reading and/or writing operations in an optical storage medium. The methods generally include reading a region...
US20070053264 Method for controlling recording power of optical disc apparatus  
A method for controlling the recording power of an optical disc apparatus. The method can search for an optimum recording power using a starting power stored in a recordable high density optical...
US20060215516 Optical information recording apparatus  
A rewritable optical disc has a laminate of first and second recording layers with first and second trial write areas respectively. Sections of the first trial write area are sequentially used in...
US20060203647 Apparatus and method for improving deviation of optimum power calibration (OPC)  
A method of improving a problem of a deviation of an optimum recording optical power, which is capable of reducing deviation of OPC (Optical Power Calibration) power and shortening a Lead-in time...
US20090180366 OPTICAL DISC RECORDING APPARATUS  
When performing data recording, an output pulse of a laser is measured, and a phase setting of a write strategy is corrected so that the pulse is outputted with a correct phase. The phase setting...

Matches 1 - 50 out of 183 1 2 3 4 >