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US 7,023,781 B2Granted
Optical disk apparatus
AssigneeRicoh Company, Ltd.
InventorMasaaki Tsuji
Life of this patent
Estimating the term…
Abstract
In an optical disk apparatus, when the write-in process to the optical disk is interrupted, a data processing part and an encoder part are set to be in the waiting state after an access to a data storing part is completed, so as to stop accessing the data storing part and also to stop storing data that is to be written. Thus, the interleave can be managed and the DSV calculation can be properly conducted without any irregular calculation. Even in a case in which the write-in process to the optical disk is restarted after temporarily interrupted, it is possible to read data similar to a case in which data to be written is successively written without an interruption.
Claims11
An optical disk apparatus for recording and reproducing information to an optical disk, said optical disk apparatus comprising:
- a data storing part temporarily storing data externally transferred to be written on said optical disk;
- a data processing part for conducting a predetermined data process for said data stored in said data storing part;
- an encoding part modulating and outputting said data processed by said data processing part;
- a write-in controlling part conducting an operation control of said data processing part and said encoding part, and conducting a storing control for storing said data to be written to said storing part;
- and
- a write-in operation instruction part detecting a state of interrupting supplying said data to be written to said data storing part, and sending an operation instruction to said write-in controlling part in accordance with a detection result;
- wherein when said write-in controlling part interrupts writing of data to the optical disk, said write-in controlling part sets said data processing part and said encoding part in a waiting state after an access to said data storing part is completed, so that the access to said data storing part is stopped, to allow said data to be written to accumulate in said data storing part, and
- wherein said write-in controlling part detects information showing an end write location based on absolute location information showing an absolute location of a blank area that is formed on the optical disk beforehand.
5 more elements
An optical disk apparatus for recording and reproducing information to an optical disk, said optical disk apparatus comprising:
- a data storing part temporarily storing data externally transferred to be written on said optical disk;
- a data processing part for conducting a predetermined data process for said data stored in said data storing part;
- an encoding part modulating and outputting said data processed by said data processing part;
- a write-in controlling part conducting an operation control of said data processing part and said encoding part, and conducting a storing control for storing said data to be written to said storing part;
- and
- a write-in operation instruction part detecting a state of interrupting supplying said data to be written to said data storing part, and sending an operation instruction to said write-in controlling part in accordance with a detection result,
- an end location information part storing end location information showing an end write location where writing data is ended on said optical disk,
- wherein when said write-in controlling part interrupts writing of data to the optical disk, said write-in controlling part sets said data processing part and said encoding part in a waiting state after an access to said data storing part is completed, so that the access to said data storing part is stopped, to allow said data to be written to accumulate in said data storing part, and
- wherein said write-in controlling part detects said information showing the end write location stored in said end location information storing part based on absolute location information showing an absolute location of a blank area that is formed on the optical disk beforehand.
6 more elements
An optical disk apparatus for recording and reproducing information to an optical disk, said optical disk apparatus comprising:
- a data storing part temporarily storing data externally transferred to be written on said optical disk;
- a data processing part for conducting a predetermined data process for said data stored in said data storing part;
- an encoding part modulating and outputting said data processed by said data processing part;
- a write-in controlling part conducting an operation control of said data processing part and said encoding part, and conducting a storing control for storing said data to be written to said storing part;
- and
- a write-in operation instruction part detecting a state of interrupting supplying said data to be written to said data storing part, and sending an operation instruction to said write-in controlling part in accordance with a detection result,
- wherein when said write-in controlling part interrupts writing of data to the optical disk, said write-in controlling part sets said data processing part and said encoding part in a waiting state after an access to said data storing part is completed, so that the access to said data storing part is stopped, to allow said data to be written to accumulate in said data storing part,
- wherein said write-in controlling part detects the end write location based on said information showing the end write location stored in said end location information storing part and determined based on said location information obtained from data recorded on said optical disk, and
- wherein when data is written from said end write location, said write-in operation instructing part detects said end write location based on said end location information stored in said end location information storing part, after seeking an optical pickup reading and writing data to said optical disk from said end location to a location just before a predetermined location based on said end location information stored in said end location information storing part.
6 more elements
An optical disk apparatus for recording and reproducing information to an optical disk, said optical disk apparatus comprising:
- a data storing part temporarily storing data externally transferred to be written on said optical disk;
- a data processing part for conducting a predetermined data process for said data stored in said data storing part;
- an encoding part modulating and outputting said data processed by said data processing part;
- a write-in controlling part conducting an operation control of said data processing part and said encoding part, and conducting a storing control for storing said data to be written to said storing part;
- and
- a write-in operation instruction part detecting a state of interrupting supplying said data to be written to said data storing part, and sending an operation instruction to said write-in controlling part in accordance with a detection result,
- wherein when said write-in controlling part interrupts writing of data to the optical disk, said write-in controlling part sets said data processing part and said encoding part in a waiting state after an access to said data storing part is completed, so that the access to said data storing part is stopped, to allow said data to be written to accumulate in said data storing part,
- wherein said write-in controlling part detects the end write location based on said information showing the end write location stored in said end location information storing part and determined based on said location information obtained from data recorded on said optical disk, and
- wherein when data is written from said end location, said write-in controlling part detects said end write location based on said end location information stored in said end location information storing part, after seeking an optical pickup reading and writing data to said optical disk from said end location to a location just before a predetermined location based on said end location information stored in said end location information storing part.
6 more elements
An optical disk apparatus for recording and reproducing information to an optical disk, said optical disk apparatus comprising:
- a data storing part temporarily storing data externally transferred to be written on said optical disk;
- a data processing part for conducting a predetermined data process for said data stored in said data storing part;
- an encoding part modulating and outputting said data processed by said data processing part;
- a write-in controlling part conducting an operation control of said data processing part and said encoding part, and conducting a storing control for storing said data to be written to said storing part;
- a write-in operation instruction part detecting a state of interrupting supplying said data to be written to said data storing part, and sending an operation instruction to said write-in controlling part in accordance with a detection result;
- and
- a clock signal generating part including a Phase Locked Loop circuit for generating a reference clock signal for writing data by corresponding to a rotation number of said optical disk so as to lock to a Wobble signal read from said optical disk in order to conduct a Constant Angular Velocity control,
- wherein the reference clock signal is used to obtain a data write-in timing when data is recorded on said optical disk;
- and
- wherein when said write-in controlling part interrupts writing of data to the optical disk, said write-in controlling part sets said data processing part and said encoding part in a waiting state after an access to said data storing part is completed, so that the access to said data storing part is stopped, to allow said data to be written to accumulate in said data storing part.
7 more elements
Dependencies are inferred from the claim text.