CN100389460C - Dithering device for correcting error of address of optical recording media - Google Patents
Dithering device for correcting error of address of optical recording media Download PDFInfo
- Publication number
- CN100389460C CN100389460C CNB2005100263525A CN200510026352A CN100389460C CN 100389460 C CN100389460 C CN 100389460C CN B2005100263525 A CNB2005100263525 A CN B2005100263525A CN 200510026352 A CN200510026352 A CN 200510026352A CN 100389460 C CN100389460 C CN 100389460C
- Authority
- CN
- China
- Prior art keywords
- address
- adip
- lpp
- output
- dithering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
The present invention relates to a dithering device for correcting errors of addresses of optical recording media, which comprises an ADIP decoder, an LPP detector, a next address predictor, a controlling device and an RS decoder, wherein the ADIP decoder outputs ADIP bits or LPP bits from inputted helical type dithering track signals; the predictor predicts the next dithering block address by the before dithering address of helical type dithering tracks; the controlling device controls one of the output of the ADIP decoder, the LPP detector and the next address predictor according to the state information of the helical type dithering track signals input from the ADIP decoder and the LPP detector. Addresses and user data are corrected and output by data which are used for controlling the output of the controlling device. The aim of the present invention is to enhance the success probability of correcting under the condition that the 0/1 judgment of the ADIP or the LPP detector is blurring because the signal quality of the helical type dithering tracks is poor when the DVD+ or DVD-discs are orderly played or recorded.
Description
Technical field
The relevant shake that is formed on the optical recording media on the indicator (wobble) device for correcting error of address of the present invention as DVD+, DVD-.
Background technology
Record is made into sine (sine) wave to the track (track) in record field artificially with media DVD+R/RW, DVD-R/RW dish, and this cries shake (Wobble).
This shake (Wobble) can generate the record Clock (time clock) consistent with the rotational speed of coiling, and also is used for the positional information and the characteristic information of indicating panel simultaneously.
For example, above-mentioned DVD+R/RW dish becomes 32 times to the screw type wobble track signal that extracts, can use the record Clock record data consistent with this, all give phase change to 93 shakes (Wobble) simultaneously, make CD can be written into the positional information or the characteristic information of dish with disk rotation speed.
The signal of this expression numerical information is called ADIP, and (address In Pregroove: address pre-groove technology) bit (bit), 52 ADIP bits form a significant unit, are called ADIPword.
Simultaneously, above-mentioned DVD-R/RW dish becomes 186 times to the screw type wobble track signal that extracts, can draw the record Clock consistent with this with disk rotation speed, form the pre-pit (pre-pit) in land (base station) field when making CD, make CD be written into the positional information or the characteristic information of dish with this.
The signal of this expression numerical information is called LPP (Land Pre-Pit land pre-pit) bit, and the data of 16 megabits become a significant unit, are called the pre-pit data block.
As mentioned above, screw type wobble track signal is because of the recording track form produces, and can whether have nothing to do with the record of dish to extract.But, need overcome the decoding device and the method thereof of this problem because of the decline of the screw type wobble track signal quality that may cause in the field that record is arranged extracting.
Fig. 1 is the pie graph of a significant information unit ADIPword of expression in the DVD+R/RW of prior art dish.
As shown in Figure 1, form 13 nibble data, this expression ADIP address, AUX data, RS parity (parity checking) with 52 Bit datas that phase modulation (PM) draws.
At this moment, above-mentioned ADIP represents CD position information in the address, and AUX represents optical disk property information, is defined as in the inducting device field to have 0 value in addition.This ADIP Word can correct two following mistakes because of with RS (13,8,6) code correction.Simultaneously, ADIP represents the address positional information of CD, and therefore there is 1 gap in the address with former ADIP word.
Fig. 2 is the pie graph of expression meaningful information unit's pre-pit (pre-pit) data block in the DVD-R/RW of prior art dish.
As shown in Figure 2, a pre-pit data block is made up of 16 Mbits of data, and this is divided into the Part A of 6 megabits and the Part B of 10 megabits.
At this moment, the positional information of above-mentioned Part A indicating panel and ECC block address, above-mentioned Part B represents positional information or characteristic information.Part A, can correct mistake below with RS (10,7,4) code correction with RS (6,3,4), Part B simultaneously.
The ECC block address that also has above-mentioned Part A is the positional information of indicating panel also, and therefore the ECC block address with former pre-pit data block has 1 gap.
Like this, whether successively the position that needs is searched in the time of can or playing at record in shake (Wobble) address that each dish is all writing down display position information, detects the continuity of shake (Wobble) address that will extract simultaneously, can confirm imprinting or broadcast with this.
But because the quantity of the parity of the error correction code of this positional information of expression is too small, error correcting capability is unsatisfactory.
Fig. 3 is the structural drawing of expression common shake (Wobble) processor.
With reference to figure 3 explanation, ADIP demoder 10 or LPP detecting device 20 are stored in storer 40 from the RS ECC piece of screw type wobble track signal permutation 13 nibble of input or 6 megabits, 10 megabits through Port Multiplier 30.The data that are stored in above-mentioned storer 40 so are by 50 error correction of RS demoder, with address 60 and user data 70 outputs.
In addition, address continuity determining device 80 detects the continuity of the address 60 of said extracted, judges with this whether record or broadcast are carried out successively.
But, if the screw type wobble track signal quality that receives is too poor, cause 0/1 of above-mentioned ADIP demoder 10 or LPP detecting device 20 to judge fuzzy situation, the error correction probability of successful is lower.
Like this, if the error correction probability of success descends, just be not easy to confirm whether successively record of CD.Therefore on ADIP demoder 10 or LPP detecting device 20, judge under the situation about thickening, also need to improve the method for the error correction probability of success 0/1.
Summary of the invention
As mentioned above, the present invention proposes in order to address the above problem, its purpose is, provide a kind of successively when DVD+ or DVD-dish is play or write down, because of the input screw type wobble track signal quality too poor, judge under the fuzzy situation at 0/1 of ADIP demoder or LPP detecting device, shake (Wobble) device for correcting error of address of the optical recording media that can improve the error correction probability of success also is provided.
To achieve these goals, the characteristics of the error correction device of optical recording media of the present invention shake address are made up of following components: from screw type wobble track signal permutation 13 nibble of input or 6 megabits, 10 megabit RS ECC pieces, export the ADIP demoder and the LPP detecting device of ADIP bit or LPP bit; From before the next address fallout predictor of the next Wobble block address of decoded Wobble address prediction; The signal of described ADIP demoder, LPP detecting device and next address fallout predictor outputs to a Port Multiplier; Storer, the output data of storing described Port Multiplier; Controller, status information according to the screw type wobble track signal of above-mentioned ADIP demoder and LPP detecting device input, export a control signal to described Port Multiplier, with a kind of output in the output of the control above-mentioned ADIP demoder of selection or LPP detecting device or next address fallout predictor; Utilize data, the RS demoder of error correction and OPADD and user data by the control output of above-mentioned controller.
At this moment, above-mentioned next address fallout predictor should add/subtracts 1 method from the address of error correction success and predicts next jitter block address.
Also have, above-mentioned ADIP demoder is too poor because of the screw type wobble track signal quality of input, is difficult to judge with the data of phase demodulating under 0 or 1 the situation, should export ADIP_is_unknown (the unknown of the ADIP bit) signal of this situation of expression; Above-mentioned LPP detecting device is not take place fully under the situation of LPP pulse, should export LPP_is_unknown (the unknown of the LPP bit) signal of this information of expression.
Simultaneously,, should select to be stored in the corresponding bits of next the jitter block address in the above-mentioned next address fallout predictor, be used for error correction if at above-mentioned ADI P demoder or LPP detecting device output ADIP_is_unknown signal or LPP_is_unknown signal.
As mentioned above, optical recording media shake (Wobble) device for correcting error of address of the present invention has following effect:
In the DVD+/DVD-register system,, and under the fuzzy situation of bit-detection, use these from shake (Wobble) address of next piece of shake (Wobble) address prediction of existing piece.Therefore, even can't judge ADIP bit or LPP bit fully, also can bring the effect that improves the error correction probability of success because of the screw type wobble track signal of quality reduction.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the structural drawing that shows a significant information unit ADIP word (order) at the DVD+R/RW of prior art dish cart.
Fig. 2 is the structural drawing that shows a significant information unit pre-pit (pre-pit) data block at the DVD+R/RW of prior art dish cart.
Fig. 3 is the structural drawing of expression common shake (Wobble) processor.
Fig. 4 is the structural drawing of expression shake of the present invention (Wobble) processor.
The symbol description of major part in the accompanying drawing:
10:ADIP demoder 20:LPP detecting device
30: Port Multiplier 40: storer
50:RS demoder 60: address
70: user data 80: address continuity determining device
90: controller 100: the next address fallout predictor
Embodiment
Embodiment to the error correction device of shake (Wobble) address of optical recording media of the present invention describes below with reference to accompanying drawings.
Fig. 4 is the structural drawing of expression shake of the present invention (Wobble) processor.
As shown in Figure 4, shake (Wobble) processor is made up of ADIP demoder 10, LPP detecting device 20, Port Multiplier 30, storer 40, next address fallout predictor 100, RS demoder 50, address continuity determining device 80.
At this moment, above-mentioned ADIP demoder 10 and LPP detecting device 20 go out 13 nibble or 6 megabits, 10 megabit RS ECC pieces from the screw type wobble track signal permutation of input, and ADIP bit or LPP bit are outputed to Port Multiplier 30; Next address fallout predictor 100 from before shake (Wobble) address prediction of decoding go out the address of next shake (Wobble) piece, and output to Port Multiplier 30.
Also have, controller 90 is according to the screw type wobble track signal condition information from above-mentioned ADIP demoder 10 and 20 inputs of LPP detecting device, a kind of in the output of above-mentioned ADIP demoder 10, LPP detecting device 20 and next address fallout predictor 100 selected in control, and to Port Multiplier 30 output control signals, above-mentioned Port Multiplier 30 will be by the control signal of above-mentioned controller 90, selects a kind of output in the output of above-mentioned ADIP demoder 10, LPP detecting device 20 and next address fallout predictor 100.In addition, storer 40 stores the data of above-mentioned Port Multiplier 30 outputs.
As mentioned above, utilize the data that are stored in the above-mentioned storer 40, RS demoder 50 carries out error correction and OPADD 60 and user data 70.Afterwards, address continuity determining device 80 will detect the continuity of the address 60 of above-mentioned output, judge whether to write down successively or play.
Like this, inscape of the present invention is identical with existing method, but is only comprising that the address that dopes to aspect the path of storer 40 supply datas, there are differences from next address fallout predictor 100 and above-mentioned next address.
To describe the action of error correction device of shake (Wobble) address of the optical recording media of the present invention of this formation by embodiment in detail below.
At first, at the DVD+ dish, ADIP word comprises ADIP address and AUX data.Because in data field and leading-out portion field, the AUX data are 0, the ADIP word data on this field are can be from ADIP word prediction before this.
Also have, the part A of DVD-dish only comprises ECC block address and parity checking, above-mentioned ECC block address always can from before the ECC block address prediction of Part A.
Therefore, next address fallout predictor 100 adds/subtracts the 1 Wobble address of predicting next piece from the address of error correction success.
Afterwards, can't definitely judge because of the screw type wobble track signal condition of input is not good under the situation of ADIP bit or LPP bit, ADIP demoder 10 or LPP detecting device 20 inform that respectively with 1 output ADIP_is_unknown (the unknown of ADIP bit), LPP_is_unknown (the unknown of LPP bit) signal controller 90 has bit-detection now and fails.
Then, above-mentioned controller 90 is not the output of selecting ADIP demoder 10 or LPP detecting device 20, but sends control information under the situation of existing bit-detection failure, makes it select the value of predicted Wobble address corresponding bits.
Therefore, described ADIP demoder is too poor in the shake quality of input, is difficult to judge under 0 or 1 the situation ADIP_is_unknown signal of this information of output expression with the data of demodulation phase; Described LPP detecting device is under the situation that the LPP pulse does not take place fully, and the LPP_is_unknown signal of this information is represented in output.In described ADIP demoder or LPP detecting device, if output ADIP_is_unknown or LPP_is_unknown signal, just selection is stored in the corresponding bits of the next address on the described next address fallout predictor, is used for error correction.
So, in dish successively under record or the situation of played data, if screw type wobble track jitter and can't correctly carry out bit-detection the time, also by next address fallout predictor 100 predicted address and with this filling bit.Therefore, the data that are stored in above-mentioned storer 40 are by 50 error correction of RS demoder, and during with address 60 and user data 70 outputs, the error correction probability of success also can will become higher.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (5)
1. the dithering device for correcting error of address of an optical recording media is characterized in that comprising:
Go out 13 nibble or 6 megabits, 10 megabit RS ECC pieces from the screw type wobble track signal permutation of input, the ADIP demoder and the LPP detecting device of output ADIP bit and LPP bit;
From before the next address fallout predictor of next jitter block address of shake address prediction of decoding;
The signal of described ADIP demoder, LPP detecting device and next address fallout predictor outputs to a Port Multiplier;
Storer, the output data of storing described Port Multiplier;
Controller, according to status information from the screw type wobble track signal of described ADIP demoder and LPP detecting device input, export a control signal to described Port Multiplier, with a kind of output in the output of control selection ADIP demoder or LPP detecting device or next address fallout predictor;
Utilize the data of the control output of described controller, carry out the RS demoder of error correction and OPADD and user data.
2. the dithering device for correcting error of address of optical recording media as claimed in claim 1 is characterized in that:
Described next address fallout predictor is that the address from the error correction success adds/subtracts 1 method and predicts next jitter block address.
3. the dithering device for correcting error of address of optical recording media as claimed in claim 1 is characterized in that:
Described ADIP demoder is too poor at the screw type wobble track signal quality of input, is difficult to judge under 0 or 1 the situation ADIP bit unknown signaling of this information of output expression with the data of demodulation phase.
4. the dithering device for correcting error of address of optical recording media as claimed in claim 1 is characterized in that:
Described LPP detecting device is under the situation that the LPP pulse does not take place fully, and the LPP bit unknown signaling of this information is represented in output.
5. as the dithering device for correcting error of address of claim 3 or 4 described optical recording medias, it is characterized in that:
In described ADIP demoder or LPP detecting device, if output ADIP bit unknown signaling or LPP bit unknown signaling, just selection is stored in the corresponding bits of next the jitter block address on the described next address fallout predictor, is used for error correction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100263525A CN100389460C (en) | 2005-06-01 | 2005-06-01 | Dithering device for correcting error of address of optical recording media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100263525A CN100389460C (en) | 2005-06-01 | 2005-06-01 | Dithering device for correcting error of address of optical recording media |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1873787A CN1873787A (en) | 2006-12-06 |
| CN100389460C true CN100389460C (en) | 2008-05-21 |
Family
ID=37484226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100263525A Expired - Fee Related CN100389460C (en) | 2005-06-01 | 2005-06-01 | Dithering device for correcting error of address of optical recording media |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100389460C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003151211A (en) * | 2001-11-15 | 2003-05-23 | Hitachi Ltd | Device and method for recording digital signal, and recording and reproducing device, and recording and reproducing method |
| US20040202092A1 (en) * | 2000-03-16 | 2004-10-14 | Hitachi, Ltd. | Wobble signal reproducing circuit |
| CN1574046A (en) * | 2003-06-16 | 2005-02-02 | 汤姆森特许公司 | Wobble demodulation for high density optical recording media |
| CN1591593A (en) * | 2003-08-25 | 2005-03-09 | 汤姆森特许公司 | Wobble demodulation for high density optical recording media |
-
2005
- 2005-06-01 CN CNB2005100263525A patent/CN100389460C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040202092A1 (en) * | 2000-03-16 | 2004-10-14 | Hitachi, Ltd. | Wobble signal reproducing circuit |
| JP2003151211A (en) * | 2001-11-15 | 2003-05-23 | Hitachi Ltd | Device and method for recording digital signal, and recording and reproducing device, and recording and reproducing method |
| CN1574046A (en) * | 2003-06-16 | 2005-02-02 | 汤姆森特许公司 | Wobble demodulation for high density optical recording media |
| CN1591593A (en) * | 2003-08-25 | 2005-03-09 | 汤姆森特许公司 | Wobble demodulation for high density optical recording media |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1873787A (en) | 2006-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7196998B2 (en) | Method of determining ADIP information through counting identical bits and different bits | |
| CN100479048C (en) | Method for managing defects in an optical disk and disk device | |
| JP2011103174A (en) | Optical disk medium, and method and device for recording the same | |
| CN100463072C (en) | Method and apparatus for recording address information on disc medium | |
| US20030198164A1 (en) | Apparatus and method for detecting sector sync signal on an optical storage medium | |
| CN102067225A (en) | Manufacturing method for optical disc, optical disc, playback method for optical disc, playback apparatus for optical disc, and recording apparatus for optical disc | |
| CN101833958B (en) | Measurement apparatus, reproduction apparatus, and measurement method | |
| US7065030B2 (en) | Reproduction-only recording medium, reproduction device, reproduction method | |
| CN100389460C (en) | Dithering device for correcting error of address of optical recording media | |
| CN100474403C (en) | Method for managing defective area on write-once optical recording medium | |
| US7460457B2 (en) | Optical disk recording/playback apparatus and optical disk evaluation method using a temporary memory | |
| US7804756B2 (en) | DVD−R/RW and DVD+R/RW recorders | |
| US7546495B2 (en) | Method and device for managing defective storage units on a record carrier | |
| CN103971714A (en) | Information recording medium, information reproducing method, and information reproducing apparatus | |
| JP2007323765A (en) | Reproducing apparatus and synchronous signal detecting method | |
| CN101405795B (en) | Recording medium access device | |
| EP1958198A1 (en) | Method and apparatus for closing recording range, method and apparatus for closing recording medium, method and apparatus for recording management information, method and apparatus for recording/reproducing data on/from recording medium, and recording medium | |
| CN101438349B (en) | Improved write splice for optical recording channels | |
| JP2003228853A (en) | Optical disk device and control method thereof | |
| US7145838B2 (en) | Method and apparatus for performing target search on optical storage disc | |
| US7433282B2 (en) | Recording method and drive for optical storage media | |
| JPH11149705A (en) | Reproducer and data storage method | |
| CN101051502B (en) | Method for the recovery of a damaged table of contents in an optical disc | |
| US20050105440A1 (en) | Disk apparatus and disk reproducing method | |
| KR100531312B1 (en) | apparatus for error correction of wobble address in optical recording medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20110601 |