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US20110235483 |
DISC APPARATUS
A disc apparatus is disclosed that includes a jitter-value detection unit configured to detect a jitter value based on a signal to be read from a medium. A detrack-value setting unit is configured... |
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US20070147199 |
TILT DETECTING DEVICE AND METHOD
An information recording and/or reproducing apparatus includes an optical head, an analog signal processor, an analog/digital converter, a controller and a digital/analog converter. The optical... |
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US20070291609 |
TILT ERROR DETECTING DEVICE, TILT CALIBRATING DEVICE, AND METHODS THEREOF FOR OPTICAL STORAGE DEVICE
The present invention discloses a tilt error detecting device for detecting a tilt error signal indicative of a tilt error between an optical disc and an optical pick-up head. The tilt error... |
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US20090086600 |
OPTICAL DISC DRIVE APPARATUS, CAMERA APPARATUS, AND METHOD FOR CONTROLLING TILT OF LIGHT BEAM IN ACCORDANCE WITH SKEW IN OPTICAL DISC
An optical disc drive apparatus includes a rotatably supporting drive unit supporting an optical disc, an optical pickup, an angular velocity sensor detecting the magnitude and direction of an... |
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US20060087935 |
Tilt adjusting mechanism and disc drive using the same
A tilt adjusting mechanism for a disc drive is provided. The disc drive includes at least one guiding shaft for supporting and guiding a pickup head. The tilt adjusting mechanism includes a first... |
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US20090190453 |
SOLID IMMERSION LENS (SIL) NEAR-FIELD SYSTEM AND METHOD OF CONTROLLING TILT
In a near-field optical recording/reproducing system and a method of controlling a tilt, the near-field optical recording/reproducing system includes: a light source; an objective lens to focus... |
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US20050276196 |
Optical disc device capable of compensating for skew of optical pickup and method thereof
An optical disc device capable of recording/reproducing data in an optical disc. The optical disc device includes an optical pickup unit for scanning a laser signal onto a specified area of an... |
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US20070147216 |
Optical pick-up, method of generating aberration for compensation and optical information processing apparatus using the same
An optical pick-up to perform recording or reproducing for an optical recording medium is disclosed, which includes a light source configured to emit a light beam, an objective lens configured to... |
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US20050128902 |
OPTICAL DISC SYSTEM AND ASSOCIATED TILT ANGLE CALIBRATION METHOD
A controllable tilt servo adjusts a tilt angle between an optical disc and an object lens according to a control signal from a CPU. An optical electric integrated circuit (OEIC) generates a... |
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US20050083816 |
Tilt sensor and optical disk drive
A tilt sensor includes a photodetector having a photosensitive plane and detecting a light beam in multiple areas and outputting detection signals representing its intensities and a tilt detector... |
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US20070030774 |
Disc drive apparatus, and tilt compensation method
A method is described for compensating tilt (0) of an optical disc (2). An optical lens (34), which is pivotably mounted, is pivoted to an optimum pivot position (WoPT) such that the amplitude... |
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US20080310274 |
Radial Tilt Estimation Via Diagonal Push-Pull
A device is arranged for scanning an optical record carrier (11), which has a data layer with parallel data tracks. The device has an optical head (22) comprising a detector for receiving... |
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US20070104063 |
Tilt compensation method and apparatus
Provided is a tilt compensation method and apparatus that effectively compensates for a tilt of an information storage medium. The tilt compensation method includes calculating a tilt value at... |
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US20050088938 |
Method for tilt correction
The present invention discloses a method for tilt correction. A plurality of reference values for DAC are imported at the beginning and then PI/PO corresponding to each of the reference values for... |
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US20050185535 |
Tilt compensating apparatus and method and optical recording and reproducing apparatus using the tilt compensating method
A tilt compensation apparatus and method minimizes a coma aberration generated due to a tilt of an optical disc by canceling a tilt offset amount of a tilt sensor. An objective lens converges a... |
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US20120140608 |
METHOD FOR DETECTING OBLIQUITY OF OPTICAL DISC DRIVE BASED ON FUNCTION BETWEEN OBLIQUITY AND CENTRAL ERROR SIGNAL BIAS
A method for detecting an obliquity of an optical disc drive is disclosed. The method includes the following steps: setting up and storing a function between the obliquity and a central error... |
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US20080159101 |
OPTICAL DISK DEVICE AND CONTROL METHOD THEREOF
Disclosed is an optical disk device including: an objective lens unit having an objective lens and a lens holder; an elastic supporting member supporting displaceably the objective lens unit on a... |
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US20060158975 |
Optical pickup tilt correction control unit and tilt correcting method
An optical disc recording/reproducing apparatus according to the present invention can adjust a tilt of an object lens within a short time, by laying an average offset component on a correction... |
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US20080068959 |
OPTICAL DISC DRIVE AND METHOD OF CONTROLLING FOCAL POSITION
An optical disc drive for recording and/or reading information on or from an optical disc is disclosed. The optical disc drive includes: a position controller which controls the position of the... |
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US20080165649 |
Tangential Disc Tilt Measurement and Corrective Action
A method and system within optical disc player/recorders that measures tangential disc tilt and provides for responsive action. Optical discs inevitably show some degree of warping. By determining... |
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US20050195719 |
Optical recording medium tilt compensating device, tilt compensating method, and optical recording device and optical reproducing device utilizing the tilt compensating method
An optical recording medium tilt compensating device is provided that includes: an objective lens that concentrates light onto a recording surface of an optical recording medium, the light being... |
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US20070195661 |
Power down apparatus for optical data drive
In an optical drive system, a “power down state” with a fast “leave power down” timing is provided. In order to meet these timing requirements, when the controller switches the system from a... |
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US20070230303 |
System of adjusting tilt angle of disc driver and adjusting method thereof
A system of adjusting tilt angle of a disc driver includes a disc driver having a motor, a disc loading seat, a guide rod, a pick-up head moveably assembled with the guide rod, a guide rod mirror... |
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US20060062106 |
Tilt control method and optical disk apparatus
A tilt control method and an optical disc apparatus can perform tilt control after quickly finding the tilt angle of a recording surface at any position in a radial direction of an optical disc... |
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US20080304386 |
METHOD AND SYSTEM FOR ADJUSTING TILT OF AN OPTICAL PICKUP HEAD
A method is used for adjusting a tilt of an optical pickup head. The method includes: identifying initial coordinates of the first static spot, the second static spot, and the dynamic spot in an... |
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US20060171266 |
Tilt adjustment apparatus and method
For an unrecorded disk, the tilt amount where the amplitude of a tracking error signal is maximum is detected by changing the tilt amount of the optical pickup in a tracking OFF state at plural... |
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US20060262690 |
System and method of compensating the tangential tilt in an optical data carrier signal
The invention relates to a system and method of compensating the tangential tilt of an optical data carrier intended to store a primary data signal, said method comprising:—an adaptive tangential... |
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US20070133365 |
TILT CALIBRATION APPARATUS AND METHOD CAPABLE OF ADJUSTING INCLUDED ANGLE BETWEEN OPTICAL PICK-UP HEAD AND OPTICAL DISC ACCORDING TO WOBBLE SIGNAL
A tilt calibrating apparatus and method capable of adjusting an included angle between an optical disc and an optical pick-up head are disclosed. The tilt calibrating apparatus includes a photo... |
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US20050259545 |
Method and apparatus for controlling tilt in an optical disc device
A method and apparatus for controlling tilt in an optical disc device are provided. The method includes determining tilt offset values corresponding to different positions of an optical disc for a... |
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US20110235486 |
OPTICAL DISC DRIVE AND METHOD FOR DETECTING VERTICAL DEVIATION THEREON
An optical disc drive includes a disc holder, a pickup head, a focus servo, an S-curve identifying unit, a first counter, a second counter, a judging unit, a disc identifying unit, and a system... |
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US20050036409 |
Method and apparatus for correcting tilt in disc drive
A method and apparatus for correcting a tilt without repeatedly calculating a tilt angle with respect to a corresponding recording or reproducing sector, by managing the tilt angle detected with... |
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US20060083140 |
Disk apparatus and adjusting method thereof
Only a focus servo control is operated without operating a tracking servo control and the driving voltage of a tilt coil is changed to change a tilt angle and a tilt angle is detected at which the... |
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US20080068960 |
Optical pickup device
The present invention provides an optical pickup device capable of properly suppressing coma aberration which occurs due to a relative tilt error between objective lenses. The optical pickup... |
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US20050180283 |
Tilt control method and optical disc apparatus
According to a preferred embodiment of the present invention, in order to provide a tilt control method and optical disc apparatus capable of exerting control to eliminate tilt and capable of... |
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US20060062107 |
Optical disc apparatus
When an optical disc is set in an optical disc apparatus, appropriate tilt angles of a pickup head with respect to this optical disc are detected at two detecting positions at inner and outer... |
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US20050207303 |
Optical disc apparatus and its control method
Before tracking control, tilt control is performed using an offset value of a differential phase tracking error signal obtained by performing signal process of the outputs from, e.g., a 4-split... |
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US20060067177 |
Tilt compensation method for optical recording/reproducing apparatus
A tilt compensation method of an optical recording/reproducing apparatus calculates a center of curvature of a disk surface where an optical pick-up is located, and de-tracks the optical pick-up... |
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US20060227687 |
Device and method of compensating the distortions in optical data carrier scanning
The invention relates to a new class of schemes for simultaneously compensating readout channel distortions in optical storage systems, such as defocus, spherical aberrations, optical data carrier... |
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US20060002254 |
Tilt correcting apparatus and method, information recording apparatus, and information recording/reproducing apparatus
A tilt correcting apparatus makes a tilt correction in an information recording apparatus or the like capable of recording record information onto an information recording medium, on an... |
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US20120127844 |
METHOD OF VERTICAL DEVIATION DISC DETECTION
A method for detecting whether vertical deviation of an optical disc occurs is provided. First, before a pickup head is successfully focused on the optical disc, a pickup head is actuated based on... |
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US20090262618 |
TILT ADJUSTING METHOD AND INFORMATION RECORDING/REPRODUCING APPARATUS USING THE SAME
[Problems] To effectively perform optimal tilt adjustment. [Means for Solving the Problems] A tilt adjusting method adjusts a tilt angle of an actual incident light and reflected light with... |
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US20090296550 |
OPTICAL RECORDING-REPRODUCING APPARATUS
An optical recording-reproducing apparatus comprises a laser beam source; an objective lens for focusing a laser beam from the laser beam source on a disk medium; an actuator for positional... |
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US20050117473 |
Method for calibrating a tilt angle of pickup head using a focus signal
A method for calibrating a relative tilt angle between a disc and a pickup head using a focus signal. The method includes the steps of moving the pickup head to a first position and performing the... |
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US20050117472 |
Method and device for performing tilt correction using multi-dimensional actuator
The present invention relates to method and device for performing tilt control. A focus and a tilt controlling output is generated, and a focusing and tilt state of an optical... |
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US20070030780 |
System and method of estimating the tangential tilt of an optical data carrier...
The invention relates to a system and a method of estimating the tangential tilt of an optical data carrier (302) intended to store a primary data signal (301), said method comprising a... |
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US20080137502 |
OPTICAL DISC APPARATUS AND OPTICAL DISC RECORDING AND REPRODUCING METHOD
According to one embodiment, an optical disc apparatus includes a calculation unit that calculates a tilt of a disc, a determining unit that determines whether or not the tilt of the disc... |
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US20050007904 |
Tilt control method, program, recording medium, and optical disk drive
A tilt control method controls an inclination of an objective lens to an optical disk in which a track in the shape of a spiral or a concentric circle is formed. The tilt control method comprising... |
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US20050013221 |
Optical disk apparatus and optical disk processing method
In an optical disk processing method according an aspect of the present invention, an optical disk is irradiated with a light beam, the amount of reflected light from the optical disk is detected,... |
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US20080212436 |
Optical Pick-Up and/or Recording Device
For optical data storage applications a near field optical system can be used. In near field optical systems an accurate control of the distance between the solid immersion lens and the disc... |
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US20090059752 |
OPTICAL DISC APPARATUS AND METHOD OF DRIVING THE SAME
An optical disc apparatus, and a method of driving the same, includes a light focusing element disposed to focus light emitted from a light source onto a disc; an actuator to move the light... |