Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
172 words
A slider servo device for correcting the deviation of the information reading spot (S₁) of a pickup from the recording track of an information recording disk in the radial direction of the disk, comprising: means (4) for generating a tracking error signal corresponding to the deviation, the tracking error signal having a low-band component; an amplification means (13), which receives the low-band component, for generating an output, wherein the amplification means has a first gain and a second gain smaller than the first gain; and a slider unit (17) for moving the pickup in the radial direction of the disk depending upon the level of the output from the amplification means (13), the slider unit having a dead zone such that a driving output cannot be generated until the absolute value of the level of the input to the slider unit reaches a prescribed magnitude, wherein the first gain is selected for high-speed movement of the pickup, and the second gain is selected for normal-speed movement or low-speed movement of the pickup.
Claim 2
Dependent Claim
172 words
A slider servo device for correcting the deviation of the information reading spot (S₁) of a pickup from the recording track of an information recording disk in the radial direction of the disk, comprising: means (4) for generating a tracking error signal corresponding to the deviation, the tracking error signal having a low-band component; an amplification means (13), which receives the low-band component, for generating an output, wherein the amplification means has a first gain and a second gain smaller than the first gain; and a slider unit (17) for moving the pickup in the radial direction of the disk depending upon the level of the output from the amplification means (13), the slider unit having a dead zone such that a driving output cannot be generated until the absolute value of the level of the input to the slider unit reaches a prescribed magnitude, wherein the first gain is selected for high-speed movement of the pickup, and the second gain is selected for normal-speed movement or low-speed movement of the pickup.
Claim 3
Dependent Claim
185 words
A slider servo device for correcting the deviation of the information reading spot (S₁) of a pickup from the recording track of an information recording disk in the radial direction of the disk, comprising: means (4) for generating a tracking error signal corresponding to the deviation, the tracking error signal having a low-band component; an amplification means (13), which receives the low-band component, for generating an output, wherein the amplification means (13) has a first gain and a second gain smaller than the first gain; and a slider unit (17) for moving the pickup in the radial direction of the disk depending upon the level of the output from the amplification means, the slider unit having a dead zone such that a driving output cannot be generated until the absolute value of the level of the input to the slider unit reaches a prescribed magnitude, wherein the first gain is selected when the level of the input to the amplification means (13) is low, and the first gain is replaced by the second gain when the amplification means (13) is proximate to the prescribed magnitude.
Claim 4
Dependent Claim
185 words
A slider servo device for correcting the deviation of the information reading spot (S₁) of a pickup from the recording track of an information recording disk in the radial direction of the disk, comprising: means (4) for generating a tracking error signal corresponding to the deviation, the tracking error signal having a low-band component; an amplification means (13), which receives the low-band component, for generating an output, wherein the amplification means (13) has a first gain and a second gain smaller than the first gain; and a slider unit (17) for moving the pickup in the radial direction of the disk depending upon the level of the output from the amplification means, the slider unit having a dead zone such that a driving output cannot be generated until the absolute value of the level of the input to the slider unit reaches a prescribed magnitude, wherein the first gain is selected when the level of the input to the amplification means (13) is low, and the first gain is replaced by the second gain when the amplification means (13) is proximate to the prescribed magnitude.