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US RE41,177 E1Granted
Track count method for an optical disc in an optical disc system
AssigneeMediatek Inc.
InventorsShung-Yunn Wang, Hao-Cheng Chen
Life of this patent
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AssigneeMediatek Inc.
InventorsShung-Yunn Wang, Hao-Cheng Chen
Estimating the term…
A method for counting a number of tracks of an optical disc in an optical disc system. The optical disc system includes an optical pickup, a light source, and a plurality of optical sensors. The method includes emitting a light beam to the optical disc from the light source, detecting light reflected from the optical disc by the optical sensors, and generating a tracking error signal according to detected signals of the optical sensors while the optical pickup moves along a radial direction of the optical disc. The method further includes generating a tracking error zero crossing signal according to the tracking error signal, generating a peak detecting signal according to the tracking error signal, generating a pseudo radio frequency zero crossing signal according to the peak detecting signal, and generating a track count signal according to the pseudo frequency crossing signal.
A track count method for an optical disc in an optical disc system, the optical disc system comprising an optical pickup moveable along a radial direction of the optical disc, a light source installed on the optical pickup for emitting light, and a plurality of sensors installed on the optical pickup for detecting light reflected from the optical disc, the method comprising:
A method for generating a pseudo radio frequency zero crossing (RFZC) signal in an optical disc system, the optical disc system comprising an optical pickup moveable along a radial direction of an optical disc, the optical pickup emitting light to the optical disk and detecting light reflected from the optical disc so as to generating a radio frequency (RF) signal, the method comprising:
Dependencies are inferred from the claim text.