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US 5,195,080 AGranted
Optical recording medium initializing method and apparatus
AssigneePioneer Electronic Corporation
InventorsToshihiro Komaki, Masahiro Katsumura
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Abstract
An optical recording medium initializing apparatus is disclosed in which an initializing light beam having a Gaussian distribution is applied to an optical recording medium. The optical energy thus applied to the medium is uniform in distribution, thus resulting in the satisfactory initialization of the recording medium.
Claims6
An optical recording medium initializing apparatus comprising:
- rotating means for rotating an optical recording medium;
- bearing means which supports said rotating means;
- conveying signal forming means for forming a conveying signal;
- irradiating means for applying an initializing light beam to said optical recording medium in such a manner that said light beam goes across said optical recording medium in parallel with the direction of movement of said bearing means in accordance with a control signal;
- AC signal forming means for producing an AC signal;
- and
- composing means for superimposing said AC signal on said conveying signal to form said control signal.
4 more elements
An initializing apparatus comprising:
- an AC signal forming source;
- a conveying signal source;
- a composing circuit, forming a control signal by superimposing an AC signal output from said AC signal forming source on a conveying signal output from said conveying signal source;
- an irradiating beam source, irradiating an initializing beam on a recording medium;
- and
- wherein said beam traverses across said medium in accordance with said control signal.
3 more elements
A method of initializing a recording medium comprising the steps of:
- forming an AC signal;
- generating a conveying signal;
- producing a control signal by superimposing said AC signal on said conveying signal;
- and
- irradiating a beam across a surface of a rotating recording medium in accordance with said control signal.
2 more elements
Dependencies are inferred from the claim text.