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US 10,354,687 B2Granted
Recording adjustment device, recording adjustment method, and program
AssigneeSony Corporation
InventorToshihiro Fujiki
Life of this patent
Estimating the term…
Abstract
There is provided a recording adjustment device, a recording adjustment method, and a program of which enables recording compensation for an optical disc for a high-linear density to be realized. The recording adjustment device according to an embodiment of the present technique executes filter processing on the basis of a regenerative signal obtained by reproducing data recorded in a recording medium, and a recording pattern of marks and spaces of the data, identifies an impulse response of a system, calculates a difference in amplitude between an output from the filter processing after the identification of the impulse response and the regenerative signal every edge type, and detects a slope of a step response in the vicinity of an edge position.
Claims9
A recording adjustment device, comprising:
- a storage portion configured to store a recording pattern of marks and spaces of data recoded in a recording medium;
- a filter processing portion configured to identify an impulse response of a system on the basis of a regenerative signal obtained by reproducing the data recorded in the recording medium, and the recording pattern stored in the storage portion;
- a calculation portion configured to calculate a difference in amplitude between an output from the filter processing portion after the identification of the impulse response, and the regenerative signal every edge type;
- a detection portion configured to detect a slope of a step response in a vicinity of an edge position;
- a control portion configured to calculate a correction amount of an edge position for each edge type on the basis of the amplitude difference and the slope of the step response, correct the edge position in response to the correction amount, cause data as a recording target to be recorded in the recording medium, and cause the recording pattern of marks and the spaces of the data as the recording target to be stored in the storage portion;
- and
- a processing control portion configured to cause recording compensation processing including at least the processing by the calculation portion, and the processing by the control portion of the processing by the filter processing portion, the processing by the calculation portion, the processing by the detection portion, and the processing by the control portion to be repetitively executed by changing the data becoming a target of reproduction, and the data as the recording target.
4 more elements
A recording adjustment method, comprising the steps of:
- storing a recording pattern of marks and spaces of data recoded in a recording medium in a storage portion;
- identifying an impulse response of a system on the basis of a regenerative signal obtained by reproducing the data recorded in the recording medium, and the recording pattern stored in the storage portion by a filter processing portion;
- calculating a difference in amplitude between an output from the filter processing portion after the identification of the impulse response, and the regenerative signal every edge type by a calculation portion;
- detecting a slope of a step response in a vicinity of an edge position by a detection portion;
- calculating a correction amount of an edge position for each edge type on the basis of the amplitude difference and the slope of the step response by a control portion;
- correcting the edge position in response to the correction amount, and causing data as a recording target to be recorded in the recording medium by the control portion;
- causing the recording pattern of marks and spaces of the data as the recording target to be stored in the storage portion by the control portion;
- and
- causing recording compensation processing including at least the processing by the calculation portion, and the processing by the control portion of the processing by the filter processing portion, the processing by the calculation portion, the processing by the detection portion, and the processing by the control portion to be repetitively executed by changing the data becoming a target of reproduction, and the data as the recording target.
6 more elements
A non-transitory computer-readable medium having embodied thereon a program, which when executed by a computer causes the computer to execute a method, the method comprising:
- storing a recording pattern of marks and spaces of data recoded in a recording medium in a storage portion;
- identifying an impulse response of a system on the basis of a regenerative signal obtained by reproducing the data recorded in the recording medium, and the recording pattern stored in the storage portion by a filter processing portion;
- calculating a difference in amplitude between an output from the filter processing portion after the identification of the impulse response, and the regenerative signal every edge type by a calculation portion;
- detecting a slope of a step response in a vicinity of an edge position by a detection portion;
- calculating a correction amount of an edge position for each edge type on the basis of the amplitude difference and the slope of the step response by a control portion;
- correcting the edge position in response to the correction amount, and causing data as a recording target to be recorded in the recording medium by the control portion;
- causing the recording pattern of marks and spaces of the data as the recording target to be stored in the storage portion by the control portion;
- and
- causing recording compensation processing including at least the processing by the calculation portion, and the processing by the control portion of the processing by the filter processing portion, the processing by the calculation portion, the processing by the detection portion, and the processing by the control portion to be repetitively executed by changing the data becoming a target of reproduction, and the data as the recording target.
6 more elements
Dependencies are inferred from the claim text.