Recording/reproducing device
AssigneeSony Corporation
InventorShoei Kobayashi
Life of this patent
Estimating the term…
Abstract
The present invention relates to a recording and/or reproduction apparatus and a program suitable for use to record or reproduce data onto or from an optical disk having two recording layers on one side thereof. In an optical disk which has, on one side thereof, two layers including a recording film L0 layer in an unformatted state and another recording film L1 layer in a formatted state, the recording film L0 layer is formatted with marks at step S1, and formation of marks corresponding to recording data is started beginning with the recording film L0 layer at step S2. After the recording film L0 layer is used up, marks corresponding to recording data are formed on the recording film L1 layer at step S3. The present invention can be applied, for example, to a DVD player.
Claims9
A recording and/or reproduction apparatus for recording or reproducing data onto or from an optical disk having a first recording layer and a second recording layer on one side thereof, characterized in that it comprises:
- recording means for irradiating a laser beam upon the optical disk to record marks onto the first or second recording layer;
- light receiving means for receiving reflected light from the optical disk when the laser beam is irradiated upon the optical disk;
- data signal production means for producing a data signal based on the reflected light received by said light receiving means;
- and
- control means for controlling said recording means to record the marks onto the entire first recording layer prior to the second recording layer.
A recording and/or reproduction method for a recording and/or reproduction apparatus for recording or reproducing data onto or from an optical disk having a first recording layer and a second recording layer on one side thereof, characterized in that it comprises:
- a recording step of irradiating a laser beam upon the optical disk to record marks onto the first or second recording layer;
- a light receiving step of receiving reflected light from the optical disk when the laser beam is irradiated upon the optical disk;
- a data signal production step of producing a data signal based on the reflected light received by the process of the light receiving step;
- and
- a control step of controlling the process of the recording step to record the marks onto the entire first recording layer prior to the second recording layer.
A recording medium on which a computer-readable program for recording or reproducing data onto or from an optical disk having a first recording layer and a second recording layer on one side thereof is recorded, characterized in that the program comprises:
- a recording step of irradiating a laser beam upon the optical disk to record marks onto the first or second recording layer;
- a light receiving step of receiving reflected light from the optical disk when the laser beam is irradiated upon the optical disk;
- a data signal production step of producing a data signal based on the reflected light received by the process of the light receiving step;
- and
- a control step of controlling the process of the recording step to record the marks onto the entire first recording layer prior to the second recording layer.
A program for causing a computer, which records or reproduces data onto or from an optical disk having a first recording layer and a second recording layer on one side thereof is recorded, to execute:
- a recording step of irradiating a laser beam upon the optical disk to record marks onto the first or second recording layer;
- a light receiving step of receiving reflected light from the optical disk when the laser beam is irradiated upon the optical disk;
- a data signal production step of producing a data signal based on the reflected light received by the process of the light receiving step;
- and
- a control step of controlling the process of the recording step to record the marks onto the entire first recording layer prior to the second recording layer.
Dependencies are inferred from the claim text.