Optical disk device and optical disk processing system having optical disk device
AssigneeAlmedio Inc.
InventorTatsuya Murata
Life of this patent
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Abstract
An optical disk device which quickly detects that a transparent disk is loaded is provided. When an optical disk is loaded, a drive controller of an optical disk device drives a spindle motor and checks existence of an optical disk based on a driving result. In addition, the drive controller drives an optical pickup to apply a focus control, to detect whether or not focusing is possible. When it is determined from the driving result that there is an optical disk and that focus is not possible, the drive controller judges that the optical disk (D) is a transparent disk.
Claims6
A method of determining an optical disk presence, type and condition, comprising:
- (a-i) driving a spindle motor and detecting presence of a disk based on an amount of a load applied to the spindle motor,
- and executing focus control based on light reflected from the disk and concluding, based on focusing being possible, that the disk that is present is a first optical disk configured to record data;
- (a-ii) driving the spindle motor and detecting presence of a disk based on an amount of a load applied to the spindle motor, and executing focus control based on light reflected from the disk and concluding, based on focusing not being possible, that the disk that is present is a transparent protective disk, which is different from the first optical disk configured to record data;
- (b-i) driving the spindle motor and detecting absence of a disk based on an amount of a load applied to the spindle motor,
- and executing focus control based on light reflected from the disk and concluding, based on focusing being possible, that the first optical disk configured to record data is present, but is mischucked;
- and
- (b-ii) driving the spindle motor and detecting absence of a disk based on an amount of a load applied to the spindle motor, and executing focus control based on light reflected from the disk and concluding, based on focusing not being possible, that no disk is present.
An optical disk device comprising:
- a spindle motor configured to rotationally drive a disk;
- a light detector configured to measure light reflected from a disk;
- and
- a controller coupled to the spindle motor and the light detector, wherein the controller, in operation,
- (a-i) drives the spindle motor and detects presence of a disk based on an amount of a load applied to the spindle motor,
- and executes focus control based on light reflected from the disk and concludes, based on focusing being possible, that the disk that is present is a first optical disk configured to record data;
- (a-ii) drives the spindle motor and detects presence of a disk based on an amount of a load applied to the spindle motor, and executes focus control based on light reflected from the disk and concludes, based on focusing not being possible, that the disk that is present is a transparent protective disk, which is different from the first optical disk configured to record data;
- (b-i) drives the spindle motor and detects absence of a disk based on an amount of a load applied to the spindle motor,
- and executes focus control based on light reflected from the disk and concludes, based on focusing being possible, that the first optical disk configured to record data is present, but is mischucked;
- and
- (b-ii) drives the spindle motor and detects absence of a disk based on an amount of a load applied to the spindle motor, and executes focus control based on light reflected from the disk and concludes, based on focusing not being possible, that no disk is present.
Dependencies are inferred from the claim text.