Optical recording medium and information recording method
AssigneeRicoh Company, Ltd.
InventorsIppei Ogawa, Takuo Ohishi, Takanobu Matsuba
Life of this patent
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Abstract
An optical recording medium has a multi-layer structure recording layer structure recording layer portion including plural recording layers provided with tracks for guiding a recording light and being adapted to record data, where recording condition information and recording layer identification information for the recording layers are recorded on the tracks as information signals. Test writing is conducted on a recording layer that is subject to recording to derive a suitable recording condition based on recording condition information that is recorded on the recording layer, and direct recording is conducted according to a direct recording condition.
Claims15
1-30. (canceled)
An optical recording medium comprising:
- a plurality of recording layers configured to store data which recording layers each have spiraling tracks for guiding recording light and are arranged into an opposite track path multi-layer structure;
- and
- a test writing region provided at each of the recording layers for performing test writing to determine a recording condition for recording data on each of the recording layers which test writing region is provided at least at an inner diameter portion of a corresponding recording layer of the recording layers if a spiraling direction of a corresponding track of the corresponding recording layer is directed from an inner diameter side to an outer diameter side, and which test writing region is provided at least at an outer diameter portion of the corresponding recording layer if the spiraling direction of the corresponding track is directed from the outer diameter side to the inner diameter side.
An information recording method for recording information on an optical recording medium including a plurality of recording layers configured to store data which recording layers each have spiraling tracks for guiding recording light and are arranged into an opposite track path multi-layer structure, and a test writing region provided at each of the recording layers for performing test writing to determine a recording condition for recording data on each of the recording layers which test writing region is provided at least at an inner diameter portion of a corresponding recording layer of the recording layers if a spiraling direction of a corresponding track of the corresponding recording layer is directed from an inner diameter side to an outer diameter side, and which test writing region is provided at least at an outer diameter portion of the corresponding recording layer if the spiraling direction of the corresponding track is directed from the outer diameter side to the inner diameter side, the method comprising the steps of:
- recording data on one of the recording layers of the optical recording medium;
- performing test writing on the test writing region of an adjacent recording layer of the recording layers that is adjacent to said one of the recording layers and determining the recording condition for recording data on said adjacent recording layer;
- and
- recording data on the adjacent recording layer according to the determined recording condition for said adjacent recording layer.
Dependencies are inferred from the claim text.