Recording reproducing apparatus and recording reproducing method
AssigneesHitachi-LG Data Storage, Inc., Hitachi Consumer Electronics Co., Ltd.
InventorKenji Akahoshi
Life of this patent
Estimating the term…
Abstract
If a recording error has occurred during RAW, then subsequent recording reproducing processing is omitted in a predetermined range, and all blocks omitted in the processing are handled as defective blocks, DFL-registered, and recorded in a replacement area. As a result, it becomes possible to hold down the number of times of recording processing accompanied by seek processing in the RAW processing, and transfer rate lowering can be solved.
Claims16
A recording reproducing apparatus having a defect management function which conducts recording while repeating recording and verification alternately by using a medium having a user data area, a replacement area, and a management information storage area updated when using the replacement area, the recording reproducing apparatus comprising:
- a read after write unit comprising a data recording unit to record data and a data verification unit to verify recorded data;
- a registration range determination unit which determines a range to be subject to defect list registration into the management information storage area, on the basis of a result of recording or verification in the read after write unit;
- a list registration unit which conducts registration in the defect list on the basis of a result supplied from the registration range determination unit;
- and
- a replacement processing unit which controls the recording unit to record alternative data of defective blocks to the replacement area on the basis of a result of recording or verification;
- wherein the registration range determination unit handles a predetermined number X blocks (where X is a natural number) beginning with a recording error generation address in the data recording unit as defective blocks, a replacement processing unit controls the recording unit to record the alternative data of the X blocks to the replacement area on the basis of a result of recording or verification, and the list registration unit registers the X blocks into the defect list.
The recording reproducing apparatus according to claim wherein,
- when recording of data and verification of recorded data are conducted by taking a predetermined read after write block as a unit,
- when an address of an error which is generated for the first time in the read after write block while the data recording unit is recording data is A, a next error generating address is B, and an address adjoining the address B is C,
- when it can be judged that a difference in the number of blocks between the address A and the address B is equal to or less than a predetermined number Y of blocks (where Y is a natural number), the registration range determination unit handles a predetermined number X consecutive blocks (where X is a natural number) beginning with the address A, B or C as defective blocks without conducting actual recording and sets the X blocks as a defect list registration range.
A recording reproducing method in a recording reproducing apparatus having a defect management function which conducts recording and reproducing by a predetermined recording block and a medium having a user data area, a replacement area, and a management information storage area updated when using the replacement area, the recording reproducing method comprising:
- in recording processing in read after write processing in which recording processing and verification processing are repeated by a predetermined read after write block unit, handling a predetermined number X blocks (where X is a natural number) beginning with a recording error generation address A as defective blocks without recording therein;
- conducting a replacement processing to record alternative data of the X blocks to the replacement area on the basis of a result of recording or verification;
- and
- conducting DFL registration.
Dependencies are inferred from the claim text.