CN1571019A - Servo regulating method of CD-ROM - Google Patents
Servo regulating method of CD-ROM Download PDFInfo
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- CN1571019A CN1571019A CN 03141578 CN03141578A CN1571019A CN 1571019 A CN1571019 A CN 1571019A CN 03141578 CN03141578 CN 03141578 CN 03141578 A CN03141578 A CN 03141578A CN 1571019 A CN1571019 A CN 1571019A
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Abstract
This invention is a servo regulation method in CD apparatus. It comprises the following steps: start the servo regulation process from the set initial position on the CD. Then find the initial value of servo through the above mentioned servo regulation process, and execute the general play operation to the above mentioned CD according to the servo value that setting at the initial time. And if there are some error during the play caused by the CD faults, it can execute servo regulation operation on a selective basis on the current position of the above mentioned CD If there are some error caused by the CD faults, this device can execute the servo regulation operation again according to the physical characteristics of the occurrence position of play error however the difference of the physical characteristics of the inner and outer cycle of CD. So user can see the entire video program normally during the play error.
Description
(1) technical field
The invention relates to the service regulation method of optical disc apparatus, refer in particular to and to make the user, also can continuous uninterrupted enjoy the service regulation method in a kind of optical disc apparatus of playing video because compact disc defect is causing under the situation of reading intertwining mistake.
(2) background technology
Fig. 1 is a general optical disc device (Disc player; DVD player) pie graph.General optical disc device comprises: light picker 20 is used to read the record data on the CD 10; Electric rotating machine 21 is used to drive CD 10 and is rotated; Sliding motor 22 drives above-mentioned light picker 20 and moves; Radiofrequency signal processor (R/F) 30, the signal that above-mentioned light picker 20 is exported carries out the repercussions setting and converts the binary bit signal to exporting; Data-signal handling part (DSP) 40, though by with the clock of above-mentioned binary bit signal bits synchronised, above-mentioned binary bit signal can be reverted to the original data line output of going forward side by side, but need carry out that mistake detects and carry out error correction, data-signal handling part 40 detects mistake at this moment just and carries out error correction from the error-detecting code (EDC:Error Detection Code) of above-mentioned binary bit signal; Mpeg decoder 50 is decoded the above-mentioned data that are resumed and export and is exported according to set MPEG mode; Motor driving part 60 to above-mentioned electric rotating machine 21 and the suitable voltage of sliding motor 22 inputs, makes it drive above-mentioned CD 10 and light picker 20 rotations respectively; Microprocessor 70 carries out servo adjustment operation from the set initial position (such as interior week of CD 10) of above-mentioned CD 10, also above-mentioned CD 10 is read the dish operation in addition, and microprocessor 70 connects enter keies.
In optical disc apparatus as shown in Figure 1, insert CD 10, above-mentioned microprocessor 70 is in order to carry out described servo adjustment operation, motor driving part 60 is to above-mentioned sliding motor 22 input appropriate voltage, above-mentioned light picker 20 is moved to the initial position of above-mentioned CD 10, the servo adjustment operation of being scheduled in the above-mentioned position that moves to, the initial setting operation of Boost of promptly above-mentioned radiofrequency signal handling part 30 (gain) and Fc (frequency) etc.
Behind the above-mentioned servo adjustment EO, if require to play, above-mentioned microprocessor 70 carries out common read operation according to the servo value (Boost of radiofrequency signal handling part 30 and Fc value etc.) of above-mentioned initial setting up to CD.This moment, the mistake by above-mentioned data-signal handling part 40 detected and error-correction operation, the most of mistake in the above-mentioned played data is recovered, thereby can be realized normal play operation.
; if the defective of described CD is (crooked-Skew; shape defects such as dell-pit; shake bad) situation is serious; the mistake of played data can't be recovered; above-mentioned data-signal handling part 40 will be to above-mentioned mpeg decoder 50 input " EDC Error " (" EDC mistake ") signals; then up to crossing the above-mentioned defect area that is judged as the CD 10 of playback error, above-mentioned microprocessor 70 all can carry out the operation of still → jump → play (static-jump-broadcast) repeatedly to the current play position of above-mentioned CD 10.
Along with carrying out repeatedly of above-mentioned still → jump → play operation, cross the defect area of above-mentioned CD 10, this moment, above-mentioned microprocessor 70 restarted common play operation according to above-mentioned initial set servo value.
But, in the aforesaid existing player method, there is one along with carrying out repeatedly that still → jump → play operates, the part playing video will be skipped, and makes the user can not see important presentation content.
(3) summary of the invention
The present invention is based on to address the above problem and carries out, the purpose of this invention is to provide the service regulation method in a kind of optical disc apparatus, when producing playback error because of compact disc defect, selection according to the user, current location in the playback error generation, carry out servo adjustment operation once more, thereby can make the user when playback error produces, also can normally see all playing videos.
The object of the present invention is achieved like this, and the service regulation method in the optical disc apparatus of the present invention is characterized in that comprising following step:
Step 1, the described optical disc apparatus set initial position on CD carries out servo adjustment operation;
Step 2 according to the initial servo value by above-mentioned servo adjustment operating and setting, is carried out common play operation to above-mentioned CD;
Step 3 in the above-mentioned play operation process, when producing playback error because of compact disc defect, in the current location of above-mentioned CD, is optionally carried out once more servo adjustment operation.
Effect of the present invention:
Service regulation method in the optical disc apparatus of the invention described above, when producing playback error owing to the defective of CD, though the physical characteristics difference of periphery in the CD, still can be according to user's selection, physical characteristics according to the playback error occurrence positions, carry out once more servo adjustment operation, make the user when playback error takes place, still can all see all playing videos normally.
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.
(4) description of drawings
Fig. 1 is the pie graph of general optical disc device (DVD player);
Fig. 2 is the pie graph of the optical disc apparatus (DVD player) of the service regulation method in the suitable optical disc apparatus of the present invention;
Fig. 3 is the process flow diagram of the embodiment of the service regulation method in the optical disc apparatus of the present invention.
The symbol description of major part in the accompanying drawing:
10. CD 20. light pickers
21. electric rotating machine 22. sliding motors
30. radiofrequency signal handling part 40. data-signal handling parts
50.MPEG demoder 60. motor driving parts
70. microprocessor 71.OSD
(5) embodiment
Below, the embodiment to the service regulation method in the optical disc apparatus of the present invention describes with reference to the accompanying drawings.
Fig. 2 is the pie graph of the optical disc apparatus (DVD player) of the service regulation method in the suitable optical disc apparatus of the present invention.The structure of the Fig. 1 that compares has increased the OSD71 that is subjected to microprocessor 40 control, be used to represent the guidance information about playback error, and the servo adjustment operation of microprocessor 70 is also different.
Fig. 3 is the process flow diagram of the embodiment of the service regulation method of optical disc apparatus of the present invention.Be described in detail with reference to the pie graph of Fig. 2 flow process below the service regulation method of Fig. 3 among the present invention.
Flow process begins;
S10: at first, after inserting CD 10, above-mentioned microprocessor 70 as previously mentioned, above-mentioned light picker 20 is moved to set initial position on the above-mentioned CD 10, the initial servo adjustment operation of being scheduled at the above-mentioned initial position that moves to promptly, is set the Boost of above-mentioned radiofrequency signal handling part 30 and Fc value etc., at this, set initial position is meant the interior week of described CD 10;
S11: behind the above-mentioned servo adjustment EO, servo value according to above-mentioned servo adjustment operation initial setting up, carry out general play operation, above-mentioned light picker 20 reads the record data on the above-mentioned CD 10,30 servo values according to above-mentioned initial setting up of above-mentioned radiofrequency signal handling part (Boost of radiofrequency signal handling part 30 and Fc value etc.) carry out the signal of above-mentioned light picker 20 outputs the repercussions setting and convert the binary bit signal to exporting, above-mentioned data-signal handling part 40 reverts to original data with above-mentioned binary bit signal and is transported to and the synchronous clock of above-mentioned binary bit signal phase, this moment, above-mentioned data-signal handling part 40 carried out error detection and error correction by the error-detecting code (EDC) in the above-mentioned binary bit signal to above-mentioned data, error detection and error-correction operation by above-mentioned data-signal handling part 40, misdata can be reverted to normal data to a certain extent, above-mentioned mpeg decoder 50 is decoded to the above-mentioned played data that is resumed according to set MPEG mode and is exported, thereby can realize the ordinary playing operation to above-mentioned CD 10;
S20: judge whether to produce playback error, carry out in the process in above-mentioned play operation, if judgement does not produce playback error, then, flow process is got back to S11, proceeds;
S21: in flow process S20, if the defect situation of described CD 10 is serious, the mistake of played data can't be recovered, above-mentioned data-signal handling part 40 will be carried " EDC Error " signal to above-mentioned mpeg decoder 50, above-mentioned microprocessor 70 will be judged and playback error occurs, thereby will on above-mentioned OSD71, export and show relevant playback error generation and require the user to select the dialog box of player method, like this, go up the dialog box of the relevant playback error that shows by above-mentioned OSD71, the user just can know and produced playback error, then, the user just can select dialog box to select the player method of above-mentioned playback error by above-mentioned user;
S30: program is play to judge whether the user selects " still → jump → play ";
S31: if the player method that the user selects is " still → jump → play ", above-mentioned microprocessor 70 will carry out Still → Jump → Play operation repeatedly from the current play position of above-mentioned CD 10, and this moment, above-mentioned microprocessor 70 was realized play operation according to the servo value of above-mentioned initial setting up;
S40: in addition, above-mentioned microprocessor 70 judges whether still to exist generation " EDC Error " playback error by above-mentioned data-signal handling part 40 in above-mentioned play operation, if still exist this moment playback error takes place, then, flow process is got back to S31, proceeds;
S41: " EDC Error " playback error does not take place again if judge among the above-mentioned flow process S40, above-mentioned microprocessor 70 just judges that the current location of above-mentioned CD skipped defect area, then, just carry out general play operation, the flow process end below according to the servo value of above-mentioned initial setting;
S50: still, do not select " still → jump → play " program to play if in above-mentioned flow process S30, judge the user, that is to say, the user thinks that Still → jump → play player method may make the user miss important presentation content because skipping the part playing video, and the user is when wishing to see all play content, select other player methods in the dialog box that relevant user that can be in above-mentioned flow process S21 selects, at this moment, judge whether the user selects " carrying out once more playing after the servo adjustment operation ", do not select " carrying out once more playing after the servo adjustment operation " if judge the user this moment, then flow process finishes;
S51: select " carrying out once more playing after the servo adjustment operation " if in above-mentioned flow process S50, judge the user, then, above-mentioned microprocessor 70 will be in the current location of above-mentioned CD 10, carry out servo adjustment operation once more, be the servo value of above-mentioned microprocessor 70, adjust the Boost of above-mentioned radiofrequency signal handling part 30 and Fc etc. according to above-mentioned initial setting up;
S60: then, judge whether still to detect " EDC Error " by above-mentioned data-signal handling part 40, promptly, there is playback error, if above-mentioned data-signal handling part 40 still detects " EDC Error ", so, flow process is got back to S51, above-mentioned microprocessor 70 is just readjusted the Boost of above-mentioned radiofrequency signal handling part 30 and Fc etc., above-mentioned to radio frequency signal processing part 30 Boost and the adjustment of Fc etc. can last till till the defect area of skipping above-mentioned CD 10 always, promptly till above-mentioned data-signal handling part 40 no longer produces " EDC Error ", carrying out repeatedly;
S61: by carrying out repeatedly of above-mentioned servo adjustment operation, can set the optimum value of the Boost of above-mentioned radiofrequency signal handling part 30 and Fc etc. once more, like this, along with carrying out repeatedly of above-mentioned servo adjustment operation, if judge among the above-mentioned flow process S60 and do not had playback error, promptly, as above-mentioned " EDC Error " when no longer producing, above-mentioned microprocessor 70 will be after finishing above-mentioned servo adjustment operation, begin to carry out general play operation from the current location of above-mentioned CD 10, at this moment, the servo value of setting when above-mentioned microprocessor 70 just carries out according to above-mentioned servo adjustment operation again (Boost of radiofrequency signal handling part 30 and Fc etc.) is carried out general play operation, and flow process finishes.
Aforesaid the present invention, can read very at need in the generality that exists defective to CD 10 because of CD 10, constantly carry out servo adjustment operation repeatedly according to user's selection, realize general play operation at last, thereby can make the user still can good important excessively play content when there is defective generation read error in CD 10.Because the interior periphery physical characteristics of CD 10 is (crooked, dell, shape, vibration etc.) difference, take place on the position of playback error at above-mentioned CD 10, can reset the servo value of the Boost of above-mentioned radiofrequency signal handling part 30 and Fc etc. according to the physical characteristics of this position.
In addition, in the middle of foregoing the foregoing description, because when the defective of above-mentioned CD 10 causes playback error to produce, because above-mentioned servo adjustment is the action need regular hour again, may cause a little of play operation to delay, to carry out servo adjustment operation according to user's selection be in order to select " still → jump → play " program to play under the situation of not wishing to waste time the user so we are provided with.
Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, should understand and wherein can make variations and modifications and do not break away from the present invention in a broad sense, so be not 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 distortion of the above embodiment.
Claims (7)
1, the service regulation method in a kind of optical disc apparatus is characterized in that comprising following step:
Step 1, described optical disc apparatus begins to carry out servo adjustment operation from the set initial position on the CD;
Step 2 by above-mentioned servo adjustment operation, is found out the initial servo value, according to the servo value that this initial period is set above-mentioned CD is carried out common play operation;
Step 3, above-mentioned play operation are carried out in the process, when producing playback error owing to compact disc defect, in the current location of above-mentioned CD, carry out once more servo adjustment operation selectively.
2, the service regulation method in the optical disc apparatus as claimed in claim 1 is characterized in that set initial position on the described CD is meant the interior week of described CD.
3, the service regulation method in the optical disc apparatus as claimed in claim 1, it is characterized in that the servo adjustment operation in the described step 1 neutralization procedure three, comprise physical characteristics, set the Boost and the Fc value of radiofrequency signal handling part according to described CD current location.
4, the service regulation method in the optical disc apparatus as claimed in claim 1 is characterized in that also comprising in the described step 3 two steps:
(1), when playback error takes place in the above-mentioned play operation process, exports and show that relevant playback error takes place and requires the user to select the dialog box of player method;
(2), by dialog box, the user selects player method, according to user's selection, carries out once more servo adjustment operation in the current location of described CD.
5, the service regulation method in the optical disc apparatus as claimed in claim 4, it is characterized in that described carry out once more servo adjustment operation after, according to the servo value of servo adjustment operating and setting once more, described CD is carried out general play operation.
6, the service regulation method in the optical disc apparatus as claimed in claim 1 is characterized in that also comprising in the described step 3 following two steps:
(1), when playback error takes place in the above-mentioned play operation process, exports and show that relevant playback error takes place and requires the user to select the dialog box of player method;
(2), by dialog box, the user selects player method,, carries out the operation of " still → jump → play " on described CD repeatedly according to user's selection.
7, the service regulation method in the optical disc apparatus as claimed in claim 6, after the current location that the operation that it is characterized in that described " still → jump → play " proceeds to CD has repeatedly been skipped the defect area of described CD, will carry out general play operation to described CD according to the servo value of initial setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141578 CN1255784C (en) | 2003-07-14 | 2003-07-14 | Servo regulating method of CD-ROM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03141578 CN1255784C (en) | 2003-07-14 | 2003-07-14 | Servo regulating method of CD-ROM |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1571019A true CN1571019A (en) | 2005-01-26 |
| CN1255784C CN1255784C (en) | 2006-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03141578 Expired - Fee Related CN1255784C (en) | 2003-07-14 | 2003-07-14 | Servo regulating method of CD-ROM |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060512A (en) * | 2018-10-16 | 2020-04-24 | 希捷科技有限公司 | Intelligent defect identification system |
-
2003
- 2003-07-14 CN CN 03141578 patent/CN1255784C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060512A (en) * | 2018-10-16 | 2020-04-24 | 希捷科技有限公司 | Intelligent defect identification system |
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| CN1255784C (en) | 2006-05-10 |
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Granted publication date: 20060510 |