Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
199 words
An optical disk system for use in providing a corrected tracking signal, comprising: a record carrier having a track with a center line, a first wobbled pit offset to a first side of said center line and a second wobbled pit offset to a second side of said center line; first means for generating a radiation beam and directing said radiation beam to said record carrier; photodetector means for receiving a modulated radiation beam from said record carrier and outputting at least a first signal and a second signal indicative of said modulated radiation beam; second means, responsive to said first signal and said second signal, for generating an uncorrected radial push-pull signal, said second means including differential amplifier means for outputting a difference signal that relates to a difference in amplitudes of said first and second signals; third means, responsive to said first signal and said second signal, for generating a correction signal that relates to portions of said first signal and said second signal that correspond to said first wobbled pit and said second wobbled pit; and fourth means for combining said uncorrected radial push-pull signal with said correction signal to produce a corrected radial push-pull signal.
Claim 2
Dependent Claim
199 words
An optical disk system for use in providing a corrected tracking signal, comprising: a record carrier having a track with a center line, a first wobbled pit offset to a first side of said center line and a second wobbled pit offset to a second side of said center line; first means for generating a radiation beam and directing said radiation beam to said record carrier; photodetector means for receiving a modulated radiation beam from said record carrier and outputting at least a first signal and a second signal indicative of said modulated radiation beam; second means, responsive to said first signal and said second signal, for generating an uncorrected radial push-pull signal, said second means including differential amplifier means for outputting a difference signal that relates to a difference in amplitudes of said first and second signals; third means, responsive to said first signal and said second signal, for generating a correction signal that relates to portions of said first signal and said second signal that correspond to said first wobbled pit and said second wobbled pit; and fourth means for combining said uncorrected radial push-pull signal with said correction signal to produce a corrected radial push-pull signal.
Claim 3
Dependent Claim
23 words
A system, as claimed in claim 1, wherein: said uncorrected radial push-pull signal and said correction signal have substantially the same corner frequency.
Claim 4
Dependent Claim
13 words
A system, as claimed in claim 1, wherein: said track includes a groove.
Claim 5
Dependent Claim
16 words
A system, as claimed in claim 1, wherein: said second means includes a high pass filter.
Claim 6
Dependent Claim
39 words
A system, as claimed in claim 1, wherein: said correction signal relates to the difference between amplitude peak portions of said first signal and said second signal that correspond to said first wobbled pit and said second wobbled pit.
Claim 7
Dependent Claim
40 words
A system, as claimed in claim 1, wherein: said third means includes timing means for use in determining said portions of said first signal and said second signal that correspond to said first wobbled pit and said second wobbled pit.
Claim 8
Dependent Claim
44 words
A system, as claimed in claim 1, wherein: said third means includes a phase locked loop and data demodulation means for use in determining said portions of said first signal and said second that correspond to said first wobbled pit and second wobbled pit.
Claim 9
Dependent Claim
26 words
A system, as claimed in claim 1, wherein: said third means includes qualifier means for controlling the application of said correction signal to said fourth means.
Claim 10
Dependent Claim
16 words
A system, as claimed in claim 1, wherein: said third means includes a low pass filter.