With Servo Positioning Of Transducer Assembly Over Track Combined With Information Signal Processing

With Servo Positioning Of Transducer Assembly Over Track Combined With Information Signal Processing patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

11/01/07 - 20070253295 - Laser beam recorder and method for controlling a laser beam recorder
In accordance with the invention synchronizing the rotation of the record carrier 60; the movement of the laser 61 and the laser output power is performed such that at least a part of the data is written in at least one track comprising a different arrangement than circular or spiral. ...

05/17/07 - 20070109923 - Optical head and optical disk device
An aberration correction lens 4 is disposed in a space between a laser light source 3 and an objective lens 5, and a lens holder 10 is frictionally coupled to a drive shaft 7 via a frictional holding body 8. A piezoelectric element 6 is provided to one end of ...

02/08/07 - 20070030768 - Magnetic recording disk drive with switchable rotational vibration cancellation
A magnetic recording disk drive with rotational vibration (RV) cancellation uses the position error signal (PES) and the signal from a RV sensor to determine when to enable and disable RV cancellation. An RV feedforward compensation signal to be summed with the VCM control signal is “switchable”, meaning that it ...

11/16/06 - 20060256670 - Signal-to-noise ratio measurement apparatus and method for signal read out of optical disc
A signal-to-noise ratio measurement apparatus for a signal read from an optical disc comprises a storage unit for storing an input signal read from an optical disc; an index signal detection unit for detecting an index signal enabling repetition signals to be identified, the repetition representing an input signal that ...

06/22/06 - 20060133226 - Light source device
A light source device includes a light source, a reflective filter and an optical absorber. The light source is used for emitting a light beam. The reflective filter is configured for selectively reflecting a first portion of the light beam emitted from the light source and for selectively transmitting a ...

04/20/06 - 20060083120 - Optical pickup, optical disk drive, light detecting apparatus, and signal generating method for optical pickup
An optical pickup includes a light source, an objective lens, light detectors, an optical system, and an error-signal generator. The light-receiving surface of at least one of the light detectors has a width extending in a first direction corresponding to a radial direction of an optical disk, and is formed ...

07/21/05 - 20050157606 - Apparatus and method of dynamic adjusting the sync window
Method of dynamic adjusting the sync window of present invention including setting a default sync window; inputting a data signal once in a time; detecting if parts of the data signal within the sync window is a sync pattern; accumulating times of the sync pattern within and without the sync ...

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