Information recording device, information playback device, information recording medium and method for multi-values recording optical disc
AssigneeSony Corporation
InventorNobuyoshi Kobayashi
Life of this patent
Estimating the term…
Abstract
An information recording/playback device includes a recording pulse generation unit generates a recording pulse based on a multi-value modulation data, and a data recording unit records the mark on the recording medium based on the recording pulse. The data recording unit executes recording processing of setting sizes of all of marks to be recorded on the recording medium to a size equal to or smaller than a spot size at a half level of a maximum value of a two-dimensional light intensity distribution of a beam spot, and executes data recording processing of forming recording regions in modes having different densities of recording marks according to the levels of the multi-value modulation data.
Claims13
An information recording device, comprising:
- a recording pulse generation unit configured to generate a recording pulse based on multi-value modulation data;
- and
- a data recording unit configured to:
- record a mark on a recording medium based on the recording pulse generated by the recording pulse generation unit;
- and
- execute a data recording processing to set sizes of all of marks to be recorded on the recording medium to be a size equal to or smaller than a spot size of a beam spot at a half level of a maximum value of a two-dimensional light intensity distribution of the beam spot.
An information recording medium, comprising:
- a plurality of marks recorded based on multi-value modulation data,
- wherein all the recorded marks have a size equal to or smaller than a spot size of a beam spot at a half level of a maximum value of a two-dimensional light intensity distribution of the beam spot.
An information playback device, comprising:
- a data readout unit configured to:
- execute readout of a mark recorded in an information recording medium, wherein the mark has a size equal to or smaller than a spot size of a beam spot of an optical pickup unit at a half level of a maximum value of a two-dimensional light intensity distribution of the beam spot;
- and
- acquire multi-value modulation data;
- and
- a demodulation unit configured to:
- receive an input of the multi-value modulation data acquired by the data readout unit;
- and
- generate binary data.
An information recording method, comprising:
- generating, by a recording pulse generation unit of an information recording device, a recording pulse based on multi-value modulation data;
- setting, by a data recording unit of the information recording device, sizes of all of marks to be recorded on a recording medium to be a size equal to or smaller than a spot size of a beam spot at a half level of a maximum value of a two-dimensional light intensity distribution of the beam spot;
- and
- recording, by the data recording unit, a mark on the recording medium based on the generated recording pulse.
A non-transitory computer-readable medium having stored thereon computer-executable instructions, that when executed by a processor of an information recording device, cause the processor to execute operations, the operations comprising:
- generating a recording pulse based on multi-value modulation data;
- setting sizes of all of marks to be recorded on a recording medium to be a size equal to or smaller than a spot size of a beam spot at a half level of a maximum value of a two-dimensional light intensity distribution of the beam spot;
- and
- recording a mark on the recording medium based on the generated recording pulse.
An information recording device, comprising:
- a recording pulse generation unit configured to generate a recording pulse based on multi-value modulation data;
- and
- a data recording unit configured to:
- record a mark on a recording medium based on the recording pulse generated by the recording pulse generation unit;
- set sizes of all of marks to be recorded on the recording medium to be a size equal to or smaller than a spot size of a beam spot;
- and
- form a plurality of recording regions in a plurality of modes having different densities of recording marks on the recording medium based on a value of the multi-value modulation data.
Dependencies are inferred from the claim text.