CN100395842C - Coding apparatus of DVD equipment and method thereof - Google Patents
Coding apparatus of DVD equipment and method thereof Download PDFInfo
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- CN100395842C CN100395842C CNB2004100893845A CN200410089384A CN100395842C CN 100395842 C CN100395842 C CN 100395842C CN B2004100893845 A CNB2004100893845 A CN B2004100893845A CN 200410089384 A CN200410089384 A CN 200410089384A CN 100395842 C CN100395842 C CN 100395842C
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Abstract
The present invention relates to a coding apparatus of DVD equipment and a method thereof, more specifically the coding apparatus and the method, which makes a circuit structure simplified, reduces a coding process once, and can use DVD equipment of a memory with small capacity and narrow bandwidth. The coding apparatus of DVD equipment according to the present invention has the characteristics composed of the following parts of a control data additional apparatus used for adding control data towards data stored on the memory, an error detecting method additional apparatus of an error detecting method used for additionally confirming the stored data whether or not can be normally read, a coding apparatus used for selectively coding according to the kinds of the data; an error detecting method correcting apparatus used for correcting the error detecting method, an error correcting data additional apparatus used for correcting errors of the data, and a modulating apparatus which is used for transforming signals of the data. In addition, the error detecting method has the characteristic that the error detecting method is an error detecting code with four bytes.
Description
[technical field]
The invention relates to the code device of DVD equipment and method thereof.Specifically, about circuit structure is oversimplified, cataloged procedure is reduced to once exactly.And can use the code device of DVD equipment of the storer that memory span is less, bandwidth is narrower and method thereof.
[background technology]
Recently, as the memory storage of PC, the DVD storer is replacing the CD storer rapidly.Compare with the CD storer, the DVD storer can be stored the mass data that is equivalent to about its 7 times, and this is the advantage that it has.
Fig. 1 is the synoptic diagram that expression describes the structure of traditional DVD equipment.
With reference to Fig. 1 as can be seen, traditional DVD storer is made of following components: the main frame 3 that generates the data (sector data) of storing on the DVD storer; The intermediate data that sector data and code device 1 by above-mentioned main frame 3 generations generate in cataloged procedure is stored, till the terminal data of will encoding are input on the storage pulse generating means 4, just coded data is carried out memory storing 2 always; Read the sector data in the above-mentioned storer 2, and its decoding processing is become can store into the code device 1 of form data on the DVD storer; To become to store into the storage pulse generating means 4 of the pulse mode on the DVD equipment by the signal transformation of above-mentioned code device 1 output; Accept the necessary information of storage and the control signal of 3 outputs of above-mentioned main frame, and the control device 5 that above-mentioned code device 1 and storage pulse generating means 4 are controlled.
More detailed theory, above-mentioned in other words code device 1 along with the kind of DVD storer (DVD+R/RW, DVD-R/RW) and the difference of coded data (Lead-in area, Data area, Lead-out area) and changing.
Simultaneously, above-mentioned storage pulse generating means 4 will be from the reversing non-return-to-zero (Non-Return-to-Zero of above-mentioned code device 1 output, being called for short NRZI) signal transformation becomes pulse mode, and it changes along with the difference of the kind of DVD storer, manufacturing company, storage speed.
On the other hand, as shown in Figure 2, the data that are stored on the DVD storer form Lead-In Area (Lead-in Area) in interior week, form leading-out zone (Lead-out Area) in periphery.Simultaneously, between above-mentioned Lead-In Area and leading-out zone, form data field (Data Area).
In addition, above-mentioned Lead-In Area is divided into following zone: original area (Initial Zone); With reference to coding region (Reference Code Zone); The 1st buffer area (Buffer Zone 1); Control data zone (Control Data Zone); The 2nd buffer area (Buffer Zone 2).
Though above-mentioned ingress area is slightly different according to its form of kind of DVD storer.But, as a rule all comprise with reference to coding region.Here, when the DVD storer of storage data when playing, above-mentionedly can be used for the balanced device in the player (Equlizer) is regulated with reference to coding region.
To being stored in data on the DVD storer when playing, make the data of storage have certain randomness (random) for the performance that improves broadcast.This process of giving the data randomness just is called " coding ".
But, be to store repeatedly with reference to coding region according to the AD HOC of data, the part with regard to utilizing this pattern that the performance of player is improved when playing.
Therefore, must use other data and other coding method with reference to coding region.For this reason, the code device in the DVD storer has two code devices (the 1st code device and the 2nd code device).
Like this, through after twice cataloged procedure, the feature of utilizing original sector data to remain unchanged is in order to encode to the reference coding region and sector data to be adjusted into specific pattern.At the 1st code device through (cataloged procedure in advance) after the coding once, again at the 2nd code device to encoding once more through coded data in advance.
Fig. 3 is the synoptic diagram that expression describes the code device of traditional DVD equipment.
With reference to Fig. 3 as can be seen, the code device of traditional DVD equipment is made of following components: to being stored in the control data attachment device 10 that sector data (2048 byte) on the storer appends control data and exports 2060 bytes; The 1st code device 11 that uses when the reference coding region is encoded; To the data of storage when playing, for can confirm normal play and export the EDC attachment device 12 of 2064 bytes of the EDC (ErrorDetection Code) that appends 4 bytes; Under the situation that the data of above-mentioned storage are stored repeatedly with specific pattern, when after with data storage, playing, give the 2nd code device 13 of data randomness for preventing that broadcast performance from reducing; In order to revise the mistake playing to advance can take place to the RS code device 14 of the data additional error correction data of storage; Can to store on the DVD storer and convert thereof into the modulating device 15 of the signal of NRZI form in order to make through coded data.
Say that in further detail the control data that appends to above-mentioned control data attachment device 10 is exactly the information that the DVD storer uses when playing in other words, it comprises sector auxiliary information (Sector Information), sector number (Sector Number) etc.
In addition,, as shown in Figure 4, in 16 continuous sector datas, do not encode from 160 bytes of beginning sector when above-mentioned the 1st code device 11 is not just can not use during with reference to coding region, and to remaining data all encode (cataloged procedure in advance).
In addition, above-mentioned the 2nd code device 13 is the zones of carrying out once more cataloged procedure, when its when sector data being carried out, owing to be to encoding through coded data in advance with reference to coding regional.So, 160 bytes and the remainder data except that EDC from the beginning sector in 16 continuous data remained original sector data state.
As mentioned above, the code device of DVD equipment is in the process of encoding, control data attachment device 10, the 1st code device 11, EDC attachment device 12, and the 2nd code device 13 be that benchmark carries out work with the sector data, RS code device 14 and modulating device 15 concentrate 16 sector datas to handle.So, can carry out repeatedly as required in processing procedure with intermediate data storage process of reading then in storer.
As mentioned above, the code device of traditional DVD equipment is in order to encode to the reference coding region and to have two in fact identical code devices of function.Like this, not only make the complex structure of equipment.When data gathering is on LSI, also can increase the size in loop simultaneously.Like this, will increase the cost of equipment.This is its existing problem.
In addition, in the process of encoding, carry out process of reading again after number is stored on the storer and will carry out twice.Like this, just necessary use capacity is big, the storer of broader bandwidth.This is its existing another one problem.
[summary of the invention]
The object of the present invention is to provide a kind of code device and method thereof of DVD equipment, code device is reduced to one, and the structure of simplified apparatus.
In addition, another object of the present invention is to provide a kind of code device and method thereof of DVD equipment, and cataloged procedure is reduced to once, reduces the process that reads and store data in the storer.Thereby can reduce the consumption of storer, reduce bandwidth.
To achieve these goals, the code device according to DVD equipment of the present invention has the feature that is made of following components:
To the control data attachment device that is stored in the additional control data of data on the storer;
Be connected the error-detecting method attachment device of the error detection coding that can the data that additional affirmation is stored normally read with described control data attachment device;
Be connected with described error-detecting method attachment device, with data storage at the reference coding region and select the code device of coded system according to the memory location of data, when data storage at the reference coding region and when being arranged in the beginning sector of 16 continuous sectors, described code device is only encoded to 160 byte datas; When data are not to be stored in reference to coding region or data storage at the reference coding region but be not to be arranged under the situation of 16 continuous beginning sectors, sectors, then all data are all encoded;
Be connected with described code device, the error-detecting method correcting device of above-mentioned error detection coding being revised according to the ruuning situation of the sector data pattern of reference coding region and code device, when data were arranged in reference to coding region and are arranged in the beginning sector of 16 continuous sectors, described error-detecting method correcting device was just revised the additional error detection coding of above-mentioned error-detecting method attachment device;
Be connected the error correction data attachment device that the mistake of data is revised with described error-detecting method correcting device;
Be connected with described error correction data attachment device, the signal of data carried out the modulating device of conversion.
In addition, above-mentioned error-detecting method has following feature: promptly it is the error detection coding of one 4 byte.
In addition, above-mentioned modulating device has following feature: promptly it can become data-switching the signal of NRZI form.
To the step that is stored in data on the storer additional and output control data and error detection coding;
The data storage of above-mentioned output selected the step of encoding at the reference coding region and according to the memory location of data, in this step, when data storage at the reference coding region and when being arranged in the beginning sector of 16 continuous sectors, described code device is only encoded to 160 byte datas; When data are not to be stored in reference to coding region or data storage at the reference coding region but be not to be arranged under the situation of 16 continuous beginning sectors, sectors, then all data are all encoded;
The step of above-mentioned error detection coding being revised according to the ruuning situation of the sector data pattern of reference coding region and code device, in this step, when data were arranged in reference to coding region and are arranged in the beginning sector of 16 continuous sectors, described error-detecting method correcting device was just revised the additional error detection coding of above-mentioned error-detecting method attachment device;
Add the step of the error correction data that the mistake of data is revised;
The step that the signal of data is changed.
In addition, the conversion of signals of above-mentioned data has following feature: promptly it can convert coded data to the signal of NRZI form.
The invention provides a kind of code device and method thereof of DVD equipment, it is reduced to one with code device, and makes circuit structure become simple.
In addition, the invention provides a kind of code device and method thereof of DVD equipment, it is reduced to cataloged procedure once, and reduces the process that reads and store data in the storer.Thereby can reduce the consumption of storer, reduce bandwidth.
[description of drawings]
Fig. 1 is the synoptic diagram that expression describes the structure of traditional DVD equipment.
Fig. 2 is the synoptic diagram that expression describes the structure that is stored in the data on the DVD storer.
Fig. 3 is the synoptic diagram that expression describes the code device of traditional DVD equipment.
Fig. 4 is the synoptic diagram that expression describes the cataloged procedure in advance of reference coding region.
Fig. 5 is the synoptic diagram that expression describes the code device according to DVD equipment of the present invention.
Fig. 5 is the synoptic diagram that expression describes the coding method according to DVD equipment of the present invention.
[embodiment]
Below, with reference to the accompanying drawings to being elaborated according to the code device of DVD equipment of the present invention and the embodiment of method thereof.
Fig. 5 is the synoptic diagram that expression describes the code device according to DVD equipment of the present invention.
With reference to Fig. 5 as can be seen, comprise following components according to the code device and the method thereof of DVD equipment of the present invention: to being stored in the control data attachment device 20 that sector data (2048 byte) on the storer appends control data and exports 2060 bytes; To the data of storage when playing, for can confirm normal play and export the error-detecting method attachment device 21 of 2064 bytes of the error detection coding (EDC:Error Detection Code) that appends 4 bytes; Data storage at the reference coding region, when data are arranged in the beginning sector of 16 continuous sectors, is only encoded to 160 byte datas.When data are not to be arranged in reference to coding region or are not to be positioned under the situation of beginning sectors, 16 continuous sectors, the code device 22 that all data are all encoded then; When data are positioned at reference to coding region, the error-detecting method correcting device 23 that above-mentioned error-detecting method attachment device 21 additional error detection codings are revised; Error correction data attachment device 24 for the additional error correction data that correct mistakes; Can to store on the DVD storer and convert thereof into the modulating device 25 of the signal of NRZI form in order to make through coded data.
Say that in further detail the control data that appends to above-mentioned control data attachment device 20 is exactly the information that the DVD storer uses when playing in other words, it comprises sector auxiliary information (Sector Information), sector number (Sector Number) etc.
In addition, at the reference coding region, when data were arranged in the sector of 16 contiguous sectors beginning part, 22 of above-mentioned code devices were encoded to 160 bytes with data storage.When data are not to be arranged in reference to coding region or are not to be positioned under the situation of 16 continuous beginning sectors, sector, then all data are all encoded.Thereby can bring into play the effect of the 2nd code device.But, in this case will, when carrying out error detection coding, will omit cataloged procedure, this is its existing problem.
Therefore, except that just keeping the state that does not carry out encoding with reference to data 160 bytes in the beginning sector of coding region and error detection coding.
When data are not when being positioned at reference to coding region, because error detection coding is to encode by code device 22.Though can not go wrong like this, when data bit during with reference to coding region, the cataloged procedure of error detection coding will be omitted.Therefore, after data are through decoding (inverse process of coding) process, will make a mistake.So, can revise error detection coding by above-mentioned error-detecting method correcting device 23.
Owing to known with reference to the sector data pattern of coding region and the ruuning situation of code device 22 in advance.So, just can revise error detection coding easily by the value that has determined.
Fig. 6 is the synoptic diagram that expression describes the workflow according to the coding method of DVD equipment of the present invention.
With reference to Fig. 6 as can be seen, at first the data in being stored in storer are added control number and error detection coding S100, S110.
Simultaneously, data storage at the reference coding region, when data are arranged in the sector of 16 continuous sector beginning parts, is then only encoded to 160 bytes.If not this situation, then to all data S120 that encodes, S130, S140, S160.
Then, utilize the value that has determined that error detection coding is revised S150.
After above-mentioned error detection coding revised, the additional error correction data in order to correct mistakes, and data-switching become the signal S170 of NRZI form, S180.
Aforesaid method just can have been encoded to DVD equipment by 1 cataloged procedure.
By above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.
Therefore, the technical scope of this invention is not limited to the content on the instructions, must determine its technical scope according to interest field.
Claims (5)
1.DVD the code device of equipment comprises:
To the control data attachment device that is stored in the additional control data of data on the storer;
Be connected the error-detecting method attachment device of the error detection coding that can the data that additional affirmation is stored normally read with described control data attachment device;
Be connected with described error-detecting method attachment device, with data storage at the reference coding region and select the code device of coded system according to the memory location of data, when data storage at the reference coding region and when being arranged in the beginning sector of 16 continuous sectors, described code device is only encoded to 160 byte datas; When data are not to be stored in reference to coding region or data storage at the reference coding region but be not to be arranged under the situation of 16 continuous beginning sectors, sectors, then all data are all encoded;
Be connected with described code device, the error-detecting method correcting device of above-mentioned error detection coding being revised according to the ruuning situation of the sector data pattern of reference coding region and code device, when data were arranged in reference to coding region and are arranged in the beginning sector of 16 continuous sectors, described error-detecting method correcting device was just revised the additional error detection coding of above-mentioned error-detecting method attachment device;
Be connected the error correction data attachment device that the mistake of data is revised with described error-detecting method correcting device;
Be connected with described error correction data attachment device, the signal of data carried out the modulating device of conversion.
2. the code device of DVD equipment as claimed in claim 1 is characterized in that,
Above-mentioned error-detecting method is the error detection coding of one 4 byte.
3. the code device of DVD equipment as claimed in claim 1 is characterized in that,
Above-mentioned modulating device can become data-switching the signal of reversing non-return-to-zero form.
4.DVD the coding method of equipment comprises:
To the step that is stored in data on the storer additional and output control data and error detection coding;
The data storage of above-mentioned output selected the step of encoding at the reference coding region and according to the memory location of data, in this step, when data storage at the reference coding region and when being arranged in the beginning sector of 16 continuous sectors, described code device is only encoded to 160 byte datas; When data are not to be stored in reference to coding region or data storage at the reference coding region but be not to be arranged under the situation of 16 continuous beginning sectors, sectors, then all data are all encoded;
The step of above-mentioned error detection coding being revised according to the ruuning situation of the sector data pattern of reference coding region and code device, in this step, when data were arranged in reference to coding region and are arranged in the beginning sector of 16 continuous sectors, described error-detecting method correcting device was just revised the additional error detection coding of above-mentioned error-detecting method attachment device;
Add the step of the error correction data that the mistake of data is revised;
The step that the signal of data is changed.
5. the coding method of DVD equipment as claimed in claim 4 is characterized in that,
The conversion of signals of above-mentioned data is the signals that coded data converted to reversing non-return-to-zero form.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100893845A CN100395842C (en) | 2004-12-10 | 2004-12-10 | Coding apparatus of DVD equipment and method thereof |
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| CNB2004100893845A CN100395842C (en) | 2004-12-10 | 2004-12-10 | Coding apparatus of DVD equipment and method thereof |
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| CN1787100A CN1787100A (en) | 2006-06-14 |
| CN100395842C true CN100395842C (en) | 2008-06-18 |
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Citations (7)
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| CN1173021A (en) * | 1996-05-29 | 1998-02-11 | 索尼公司 | Component system |
| CN1229989A (en) * | 1998-01-30 | 1999-09-29 | 三菱电机株式会社 | Date recorder and data producing circuit |
| CN1317793A (en) * | 2000-03-23 | 2001-10-17 | 索尼公司 | Data reproducing method and appts., and method and/or appts. for reproducing data |
| CN1331470A (en) * | 2000-06-29 | 2002-01-16 | 扬智科技股份有限公司 | Coder/decoder system of optical disk drive |
| US6385744B1 (en) * | 1998-01-21 | 2002-05-07 | Kabushiki Kaisha Toshiba | Data recording medium, data recording method and data reproducing method |
| CN1383678A (en) * | 2000-04-21 | 2002-12-04 | 索尼公司 | Encoding device and method, recorded medium, and program |
| US20020191856A1 (en) * | 2001-06-15 | 2002-12-19 | Kiyoshi Umeda | Image processing apparatus, coding apparatus and method, and computer program and storage medium |
-
2004
- 2004-12-10 CN CNB2004100893845A patent/CN100395842C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1173021A (en) * | 1996-05-29 | 1998-02-11 | 索尼公司 | Component system |
| US6385744B1 (en) * | 1998-01-21 | 2002-05-07 | Kabushiki Kaisha Toshiba | Data recording medium, data recording method and data reproducing method |
| CN1229989A (en) * | 1998-01-30 | 1999-09-29 | 三菱电机株式会社 | Date recorder and data producing circuit |
| CN1317793A (en) * | 2000-03-23 | 2001-10-17 | 索尼公司 | Data reproducing method and appts., and method and/or appts. for reproducing data |
| CN1383678A (en) * | 2000-04-21 | 2002-12-04 | 索尼公司 | Encoding device and method, recorded medium, and program |
| CN1331470A (en) * | 2000-06-29 | 2002-01-16 | 扬智科技股份有限公司 | Coder/decoder system of optical disk drive |
| US20020191856A1 (en) * | 2001-06-15 | 2002-12-19 | Kiyoshi Umeda | Image processing apparatus, coding apparatus and method, and computer program and storage medium |
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| CN1787100A (en) | 2006-06-14 |
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