Method and apparatus for accessing a desired track of a recording medium during a stopped state of recording or reproduction
First Claim
1. A method of accessing a light beam to a desired track of a plurality of parallel tracks on an information recording medium for effecting at least one of recording and reproduction, said method comprising the steps of:
- moving the light beam and the medium relative to each other in a longitudinal direction of the parallel tracks for effecting recording or reproduction of information;
stopping the relative movement in the longitudinal direction of the parallel tracks;
relatively moving the light beam towards a desired track in a direction crossing the parallel tracks when a predetermined time period has elapsed after the relative movement has stopped.
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Accused Products
Abstract
A method and apparatus for accessing a track in a recording medium during a stopped state of recording or reproduction. The method includes accessing a recording and/or reproducing device to a desired track of a plurality of tracks on the information recording medium. The recording and/or reproducing device and the recording medium are not relatively moved in a longitudinal direction of the tracks, while the recording and/or reproducing device is moved relative to the recording medium in a direction which crosses the tracks. The apparatus for recording and/or reproducing information includes a device for recording information on and/or reproducing information from a recording medium having a plurality of parallel tracks, a first driving device for moving the recording medium relative to the recording and/or reproducing device in a longitudinal direction of the tracks, a second driving device for moving the recording and/or reproducing device relative to the recording medium in a direction crossing the tracks, and a device for controlling the first driving device for disabling the first driving device when the second driving device is operated.
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Citations
18 Claims
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1. A method of accessing a light beam to a desired track of a plurality of parallel tracks on an information recording medium for effecting at least one of recording and reproduction, said method comprising the steps of:
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moving the light beam and the medium relative to each other in a longitudinal direction of the parallel tracks for effecting recording or reproduction of information; stopping the relative movement in the longitudinal direction of the parallel tracks; relatively moving the light beam towards a desired track in a direction crossing the parallel tracks when a predetermined time period has elapsed after the relative movement has stopped. - View Dependent Claims (2, 3, 4, 5)
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6. A method of accessing recording and/or reproducing means to a desired track of a plurality of parallel tracks on an information recording medium having a no-error mark recorded in a recorded track indicating that information recorded in that track does not contain error, said method comprising the steps of:
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moving said recording and/or reproducing means and the medium relative to each other in a longitudinal direction of the parallel tracks for effecting recording or reproduction of information; stopping the relative movement in the longitudinal direction of the parallel tracks; relatively moving said recording and/or reproducing means towards a desired track in a direction crossing the parallel tracks; and counting the number of no-error marks crossed by said reading and/or reproducing means while relatively moving in the direction crossing the parallel tracks. - View Dependent Claims (7)
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8. A method of accessing recording and/or reproducing means to a desired track of an information recording medium including a plurality of parallel information tracks for containing information and tracking tracks for providing a tracking signal, alternately arranged, and including an error mark recorded in a recorded information track indicating that information recorded in that track contains error, said method comprising the steps of:
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moving said recording and/or reproducing means and the medium relative to each other in a longitudinal direction of the parallel tracks for effecting recording or reproduction of information; stopping the relative movement in the longitudinal direction of the parallel tracks; relatively moving said recording and/or reproducing means towards a desired track in a direction crossing the parallel tracks; and counting the number of tracking tracks and error marks crossed by said recording and/or reproducing means while relatively moving in the direction crossing the parallel tracks. - View Dependent Claims (9)
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10. An apparatus for optically recording and/or reproducing information comprising:
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recording and/or reproducing means for recording information in and/or reproducing information from an optical recording medium comprising a plurality of parallel tracks, said recording and/or reproducing means comprising a light source for emitting a light beam for irradiating the medium; first driving means for moving the medium and the light beam relative to each other in a longitudinal direction of the parallel tracks; second driving means for relatively moving the light beam in a direction crossing the parallel tracks; control means for controlling said second driving means for accessing the light beam to a track for effecting recording or reproduction, after a predetermined time period has elapsed subsequent to reduction of relative velocity between the light beam and the medium in the longitudinal direction of the parallel tracks to zero. - View Dependent Claims (11, 12, 13)
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14. An apparatus for recording and/or reproducing information comprising:
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recording and/or reproducing means for recording information in and/or reproducing information from an information recording medium comprising a plurality of parallel tracks and a no-error mark recorded in a recorded information track indicating that information recorded in that track contains no error; first driving means for moving the recording medium and said recording and/or reproducing means relative to each other in a longitudinal direction of the parallel tracks; second driving means for moving said recording and/or reproducing means relative to the recording medium in a direction crossing the parallel tracks; control means for controlling said first driving means for disabling said first driving means when said second driving means is operated; and means for counting the number of no-error marks crossed by said recording and/or reproducing means while relatively moving in the direction crossing the parallel tracks. - View Dependent Claims (15, 16, 17)
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18. An apparatus for recording and/or reproducing information comprising:
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recording and/or reproducing means for recording information in and/or reproducing information from an information recording medium comprising a plurality of parallel information tracks for containing information and tracking tracks for providing a tracking signal, alternately arranged, and further comprising an error mark recorded in a recorded information track indicating that information recorded in that track contains error; first driving means for moving the medium and said recording and/or reproducing means relative to each other in a longitudinal direction of the parallel tracks; second driving means for moving said recording and/or reproducing means and the medium relative to each other in a direction crossing the parallel tracks; control means for controlling said first driving means for disabling said first driving means when said second driving means is operated; and means for counting the number of tracking tracks and error marks crossed by said recording and/or reproducing means while relatively moving in the direction crossing the parallel tracks.
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Specification