Resources Contact Us Home
Tracking control unit in information reproducing apparatus

Image Number 2 for United States Patent #4805163.

In reproducing recorded information from a track on an optical disc by the use of a light beam, a tracking servo is employed for enabling the light beam to follow up the track. When there occurs any tracking deviation due to some flaw or the like on the track, the tracking servo is switched off if the number of times of such tracking deviation has exceeded a predetermined value within a preset time, and simultaenously a braking action is executed to impede the movement of the light beam. The braking force is adjustable in accordance with the velocity of the light beam movement.

  Recently Added Patents
Information processing apparatus and power supply controlling method
Methods for diagnosing irritable bowel syndrome
Single well reservoir characterization apparatus and methods
Distylium plant named `PIIDIST-II`
LED lighting module
Method and apparatus for allocating and obtaining IP address
  Randomly Featured Patents
Method of improving SCSI operations by actively patching SCSI processor instructions
Stain-proofing agent for preventing adherence of stain and non-aqueous composition for paints containing said agent
Coated cathode for rechargeable metal battery
Photoresist composition, method of patterning thin film using the same, and method of manufacturing liquid crystal display panel using the same
Process for preparation of methyl methoxyacetate
Two way radio
Imaging apparatus, control method thereof, and program
Vapor pressure enhancement (VPE) direct water chilling-heating process and apparatuses for use therein
Apparatus and method for entering and exiting low power mode
Anti-spam tool for browser