Optical recording method and apparatus for an optical storage medium
First Claim
1. An optical recording method for an optical storage medium in which a recording pulse pattern having a sequence of multiple pulses is used to record one of plural kinds of marks with different lengths on the storage medium through a recording process in which a recording linear velocity is variable, comprising the steps of:
- allocating individually two or more discrete write powers to the respective pulses of the recording pulse pattern;
linearly varying each of the write powers, allocated to the respective pulses of the recording pulse pattern, in proportion with a change of one of the recording linear velocity and a recording position of the storage medium; and
supplying the recording pulse pattern to a pickup, the pickup emitting a light beam to the storage medium in accordance with the recording pulse pattern having the linearly varied write powers allocated to the respective pulses, so that one of the plural kinds of marks is recorded on the storage medium.
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Accused Products
Abstract
In an optical recording method and apparatus for an optical storage medium, a recording pulse pattern having a sequence of multiple pulses is used to record one of plural kinds of marks with different lengths on the storage medium through a variable-linear-velocity recording process or a constant-angular-velocity recording process. Two or more discrete write powers are individually allocated to the respective pulses of the recording pulse pattern. Each of the write powers, allocated to the respective pulses of the recording pulse pattern, is linearly varied in proportion with a change of one of the recording linear velocity and a recording position of the storage medium. The resulting recording pulse pattern is supplied to a pickup, and the pickup emits a light beam to the storage medium in accordance with the recording pulse pattern having the linearly varied write powers allocated to the respective pulses, so that one of the plural kinds of marks is recorded on the storage medium.
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Citations
24 Claims
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1. An optical recording method for an optical storage medium in which a recording pulse pattern having a sequence of multiple pulses is used to record one of plural kinds of marks with different lengths on the storage medium through a recording process in which a recording linear velocity is variable, comprising the steps of:
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allocating individually two or more discrete write powers to the respective pulses of the recording pulse pattern;
linearly varying each of the write powers, allocated to the respective pulses of the recording pulse pattern, in proportion with a change of one of the recording linear velocity and a recording position of the storage medium; and
supplying the recording pulse pattern to a pickup, the pickup emitting a light beam to the storage medium in accordance with the recording pulse pattern having the linearly varied write powers allocated to the respective pulses, so that one of the plural kinds of marks is recorded on the storage medium. - View Dependent Claims (3, 5, 6, 7, 8, 9, 10, 11, 12)
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2. An optical recording method for an optical storage medium in which a recording pulse pattern having a sequence of multiple pulses is used to record one of plural kinds of marks with different lengths on the storage medium through a CAV or ZCAV recording process wherein the recording angular velocity is constant, comprising the steps of:
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allocating individually two or more discrete write powers to the respective pulses of the recording pulse pattern;
linearly varying each of the write powers, allocated to the respective pulses of the recording pulse pattern, in proportion with a change of one of a recording linear velocity and a recording position of the storage medium; and
supplying the recording pulse pattern to a pickup, the pickup emitting a light beam to the storage medium in accordance with the recording pulse pattern having the linearly varied write powers allocated to the respective pulses, so that one of the plural kinds of marks is recorded on the storage medium. - View Dependent Claims (4)
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13. An optical recording apparatus for an optical storage medium in which a recording pulse pattern having a sequence of multiple pulses is used to record one of plural kinds of marks with different lengths on the storage medium through a recording process wherein a recording linear velocity is variable, comprising:
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a write power allocation unit allocating individually two or more discrete write powers to the respective pulses of the recording pulse pattern;
a write power control unit linearly varying each of the write powers, allocated to the respective pulses of the recording pulse pattern by the write power allocation unit, in proportion with a change of one of the recording linear velocity and a recording position of the storage medium; and
a recording pulse pattern supply unit supplying the recording pulse pattern, output by the write power control unit, to a pickup, the pickup emitting a light beam to the storage medium in accordance with the recording pulse pattern having the linearly varied write powers allocated to the respective pulses, so that one of the plural kinds of marks is recorded on the storage medium. - View Dependent Claims (15, 17, 18, 19, 20, 21, 22, 23, 24)
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14. An optical recording apparatus for an optical storage medium in which a recording pulse pattern having a sequence of multiple pulses is used to record one of plural kinds of marks with different lengths on the storage medium through a CAV or ZCAV recording process wherein the recording angular velocity is constant, comprising:
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a write power allocation unit allocating individually two or more discrete write powers to the respective pulses of the recording pulse pattern;
a writes power control unit linearly varying each of the write powers, allocated to the respective pulses of the recording pulse pattern by the write power allocation unit, in proportion with a change of one of a recording linear velocity and a recording position of the storage medium; and
a recording pulse pattern supply unit supplying the recording pulse pattern, output by the write power control unit, to a pickup, the pickup emitting a light beam to the storage medium in accordance with the recording pulse pattern having the linearly varied write powers allocated to the respective pulses, so that one of the plural kinds of marks is recorded on the storage medium. - View Dependent Claims (16)
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Specification