CN1746985A - Disk carving regenerator and method - Google Patents
Disk carving regenerator and method Download PDFInfo
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- CN1746985A CN1746985A CN 200410066246 CN200410066246A CN1746985A CN 1746985 A CN1746985 A CN 1746985A CN 200410066246 CN200410066246 CN 200410066246 CN 200410066246 A CN200410066246 A CN 200410066246A CN 1746985 A CN1746985 A CN 1746985A
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Abstract
A method for writing and regenerating optical disc includes outputting swing signal from optical disc surface, deciding multiplication speed of optical disc writing and regenerating, using the swing signal to regulate phase synchronous loop under low multiplication speed of optical disc writing and regenerating, using phase inverse sectional signal to regulate phase synchronous loop under high multiplication speed of optical disc writing and regenerating, regulating main shaft rotation according to regulation voltage generated by phase synchronous loop.
Description
Technical field
The present invention relates to disk carving regenerator and method, particularly can adjust the disk carving regenerator and the method for main axis rotation easily according to times speed.
Background technology
In general, DVD-RAM (Digital Versatile Disc-RAM) but etc. main concentric circles or the spirality magnetic track (concave magnetic track/land magnetic track) of forming in the CD of imprinting, the user is at the magnetic track identifying recording layer, mode as cd-rom recording of information, promptly according to the difference of track location, along with the rotational speed of CD changes in permanent line (or alignment) the speed mode (constant linear velocity:CLV) of certain bit rate recorded information, it doesn't matter in the position of it and magnetic track, but keep certain rotational speed and by Heng Jiao (or deciding the angle) speed (Constant AngleVelocity:CAV) mode of certain bit rate recorded information, this is widely known by the people from interior thoughtful most peripheral.
Identical therewith, the CD that can repeat imprinting (for example: DVD-RAM) as shown in Figure 1, the data field several sections that can be divided into importing field (lead-in area) and derivation field (lead-out area) and actual engraving data, above-mentioned data field can be managed respectively by district (zone) again again.
At this moment, the user uses optical take-up apparatus in order to write down or sense data needs and can freely optical take-up apparatus be moved to needed position.For this reason, in CD 10, write down address information.When said here " address information " refers to magnetic track distributed by complex unit record block, the identifying information that constituent parts record block is given.The unit record piece of DVD-RAM is the sector part, and the unit record piece of DVD-RW is 1 ECC (Error correctioncode) piece.
Therefore, identical therewith existing disc address information is corresponding, by making its instability, comes recording address information.
Fig. 2 has formed the magnetic track (land magnetic track and/or person's concave magnetic track) as user's data field as the partial plan of existing CD in CD.In above-mentioned magnetic track, utilize the change records of amplitude direction to descend swing (or unstable) signal.
At this, when above-mentioned unstable signal is regenerated as imprinting, be used as the means of the clock signal that obtains recording clock signal or regeneration usefulness.Though show with figure, the magnetic head field of the recessed trace record head information by the free time in the pre-determined field of each sector possesses.Like this, the optical pickup apparatus that possesses in the imprinting regenerating unit just can move to needed position easily by the address information that writes down in the magnetic head field.In addition, also sector number, sectors type, code track etc. can be discerned, servo adjusting can also be carried out.
Fig. 3 is the structure exploded view to CD burning regeneration group's recording address information, and an address information can be divided into sync section (SYNC, 13) that shows each synchronizing signal and data 14 parts that show address information and error correcting symbol thereof.
At this, above-mentioned address information forms on CD as 93 swinging signals (swinging signal that 93 cycles divided), can be divided into the phase reversal interval and the single interval in 85 cycles in 8 cycles again separately.This forms with Fig. 4.
Fig. 5 is the CD burning of imprinting playback of data in existing CD and the general block structure figure of regenerating unit, light picker 15 is adjusted the light beam that adjusting of portion 16 assemble and has been placed on the magnetic track of CD 10 according to servo in object lens, perhaps, after the light that reflection is come in signal recording surface is assembled object lens again, detect focal length rub-out signal and trail-and-error signal, therefore can be described as photodetector.
Above-mentioned photodetector, form by the detected tiny mistake of a plurality of light, in the detected tiny mistake of light separately, the electric signal of the amount ratio of resultant photophase will pass through focal length error message test section 17, and trail-and-error signal detecting part 18 and data processing division 19 are exported separately.
Above-mentioned focal length rub-out signal test section 17 detects from the electric signal focal length rub-out signal (FE) of above-mentioned photodetector output and exports by the servo portion 16 that adjusts, and trail-and-error signal detecting part 18 detects from the electric signal trail-and-error signal (TE) of above-mentioned photodetector output and exports by the servo portion 16 that adjusts.
Above-mentioned servo adjusting in the portion 16, for the drive signal handling focal length rub-out signal (FE) and adjust focal length by 20 outputs of focal length servo driving portion; Go forward side by side drive signal that line trace adjusts by 21 outputs of tracking servo drive division for handling trail-and-error signal (TE).
At this moment, above-mentioned focal length servo driving portion 20 moves up and down light picker 15 by driving the focal length driver in the light picker 15, along with the rotation of CD 10 is followed the trail of with moving up and down.That is, order about focal length driver that the object lens above-below direction of assembling light promptly moves along the focal length direction of principal axis along with in the difference of adjusting signal can make that distance between object lens and the CD 10 maintains to a certain degree.
In addition, above-mentioned tracking servo drive division 21 is according to the driving of the tracking driver in the light picker 15, make light pick up 15 object lens be the radiation direction move the location tracking that corrects light beam fixed magnetic track.That is: the track centreline that regulate light picker 15 and CD is consistent it.
And, data processing division 19 detects from electric signal high frequency (radio frequency:RF) signal of above-mentioned photodetector output and exports by the above-mentioned servo portion 16 that adjusts, and the above-mentioned servo portion 16 that adjusts detects the rotating speed data of CD by 22 outputs of main axle servo machine from above-mentioned high-frequency signal.Above-mentioned main axle servo machine 22 is adjusted spindle motor 23 to phase synchronous loop (Phase Locked Loop:PLL) according to rotating speed data, makes CD 10 rotations.That is: spindle motor 23 applies revolving force for the rotation of CD by main shaft, and the revolving force that main shaft applies spindle motor 23 makes the speed rotation of CD 10 to want thereby pass to CD 10.
But the disk carving regenerator of prior art has following problems.
There is this shortcoming in existing disk carving regenerator: extracted out from the unstable signal of CD output, in data processing division, utilize difference adjusting by main shaft with standard time clock, under the very high situation of the frequency of the unstable signal of above-mentioned CD, when imprinting of high power speed and regeneration, the noise ratio (or signal to noise ratio (S/N ratio)) of the signal band of unstable signal is destroyed to make main shaft adjust to become and is not easy.
Summary of the invention
The present invention is for solving above-mentioned shortcoming, when its fundamental purpose is to provide low power speed, export unstable signal, during high power speed, in cycle between the output phase reversal zone, improve the noise ratio (or signal to noise ratio (S/N ratio)) of signal band thereby improve and make regeneration and imprinting be easy to disk carving regenerator and method.
To achieve these goals, disk carving regenerator of the present invention is a feature to comprise following all many-sides: by light picker and photodetector; Focal length rub-out signal test section, trail-and-error signal detecting part, data processing division, the servo portion that adjusts; In the disk carving regenerator that focal length servo driving portion, tracking servo drive division and main axle servo form, the feasible band filter that is able to pass through from the unstable signal of the detected frequency band corresponding of above-mentioned photodetector of above-mentioned data processing division and the servo portion of adjusting; In the unstable signal of from above-mentioned band filter, exporting, detect the interval test section of phase reversal of phase reversal interval period and output phase counter-rotating wayside signaling; Reduce the amplitude of the above-mentioned unstable signal of having measured and export the microtome of unstable signal; Receive above-mentioned phase reversal wayside signaling and unstable signal and have the phase place/rate signal of optional frequency, the phase synchronous loop that can make sort signal be taken place and export; Utilize above-mentioned phase place/rate signal to find out mistake, the wrong generating unit that the main axis rotation voltage that takes place to finalize the design is exported from above-mentioned main axle servo etc.
Disk carving regenerator of the present invention and method, although can be when CD low power speed, utilize unstable signal to carry out imprinting and regeneration, but, when high power speed, normally export unstable signal and become difficult, in above-mentioned unstable signal, produced many noises, so use can be carried out the imprinting and the regeneration of high power speed with security and stability with the cycle in the phase reversal interval of a plurality of unstable signals.
Has following effect according to disk carving regenerator of the present invention and method.
CD burning renovation process of the present invention when low power when speed and high power speed, utilizes unstable signal and phase reversal wayside signaling to adjust the rotation of main shaft effectively respectively separately, therefore, can stablize imprinting and regeneration by different times speed.
Description of drawings
Fig. 1 is the displaying drawing of the structure of normal optical disk;
Fig. 2 is the partial plan of existing CD;
Fig. 3 is the structure exploded view to CD burning regeneration group's recording address information;
Fig. 4 is the drawing that unstable signal is presented in phase reversal interval and single interval in existing CD;
Fig. 5 is the CD burning of imprinting playback of data in existing CD and the general block structure figure of regenerating unit;
Fig. 6 is according to the data processing division of disk carving regenerator of the present invention and the servo summary single-sided structure figure that adjusts part;
Fig. 7 is a precedence diagram of explaining CD burning renovation process of the present invention.
Accompanying drawing major part symbol description
30. the interval check of band filter 31. phase reversals portion
32. interval portion's 33. microtomes that replenish of phase reversal
34. swinging signal counter 35. phase synchronous loops
36. phase place/speed mistake generating unit
Embodiment
Below, with regard to being described as follows of disk carving regenerator of the present invention and method.
Disk carving regenerator of the present invention comprises following aspects: the light picker and the photodetector that directly carry out data carving and regeneration on CD; Utilization is from the surface state of the electrical signal detection CD of above-mentioned photodetector output and focal length rub-out signal test section, trail-and-error signal detecting part and the data processing division of output data; Utilize the various data of above-mentioned each test section and data processing division to generate the servo portion that adjusts that adjusts signal; According to above-mentioned servo focal length servo driving portion, tracking servo drive division and the main axle servo engine of exporting in the portion etc. that signal is adjusted out of adjusting of adjusting.
At this, above-mentioned data processing division is extracted unstable signal out from above-mentioned optical detection part, outputs to above-mentioned servo adjusting in the portion, and the above-mentioned servo portion of adjusting adjusts main axle servo, makes the CD rotation to meet from the characteristic frequency of above-mentioned unstable signal output.
Particularly, disk carving regenerator of the present invention is in high power when speed, the above-mentioned unstable signal that shows reply (or reaction) destabilization, so utilize the cycle between above-mentioned unstable signal phase reversal zone to adjust above-mentioned main axle servo.
That is: when low power is fast, though the normal extraction of above-mentioned unstable signal also is possible, during high power speed, so above-mentioned unstable jitter has noise.Therefore, in the address information by certain interval above-mentioned unstable signal performance, utilize cycle in phase reversal interval can adjust the rotation of main shaft.
Therefore, disk carving regenerator of the present invention utilizes unstable signal to adjust main shaft in low power when speed, when high power speed, utilizes cycle in phase reversal interval to adjust the rotation of main shaft.
Fig. 6 is according to the data processing division of disk carving regenerator of the present invention and the servo summary single-sided structure figure that adjusts part.
As shown in Figure 6, disk carving regenerator of the present invention constitutes by comprising following all parts:
The band filter 30 that the unstable signal of the frequency band of extracting out in the feasible never stabilization signal is able to pass through; From above-mentioned band filter 30, detect the phase reversal interval period in the never stabilization signal of output, the interval test section 31 of phase reversal of output phase counter-rotating wayside signaling; Replenish from the interval portion 32 that replenishes of phase reversal of the phase reversal wayside signaling of interval test section 31 outputs of above-mentioned phase reversal; The amplitude that reduces the above-mentioned unstable signal of having measured is exported the microtome 33 of unstable signal; The cycle of the unstable signal that calculating is exported from above-mentioned microtome 33 also outputs to the interval swinging signal counter 34 that replenishes in the portion 32 of phase reversal; Receive above-mentioned phase reversal wayside signaling and unstable signal and have the phase place/rate signal of optional frequency, the phase synchronous loop 35 that sort signal is taken place and export (phase locked loop:PLL); Utilize above-mentioned phase place/rate signal to find out mistake, produce phase place/speed mistake generating unit 36 formations such as grade of the main axis rotation voltage of typing.
At this, the interval test section 31 of above-mentioned phase reversal calculates the phase-unstable signal of measuring and is divided into the interval and single interval of phase reversal in certain interval, thereby measures and export the cycle in above-mentioned phase reversal interval.
In addition, hold from the cycle in the phase reversal interval of 31 outputs of test section between above-mentioned reversal zone for correct, so that in the additional portion 32 in above-mentioned phase reversal interval, can correctly hold the cycle of above-mentioned unstable signal, also can utilize from the unstable signal of above-mentioned microtome 33 outputs.
And, above-mentioned phase synchronous loop 35 is made of phase comparator, low band filter, error amplifier and voltage adjustment oscillator, utilization can produce the phase place/rate signal with optional frequency from the interval test section 31 of above-mentioned phase reversal, interval phase reversal wayside signaling and the unstable signal that replenishes portion 32 and microtome 33 outputs of phase reversal.
Therefore, disk carving regenerator of the present invention is when high power speed, because of the signal band noise ratio (or signal to noise ratio (S/N ratio)) that has improved above-mentioned unstable signal produces the phase reversal wayside signaling, in high power speed, also can make main axis rotation easily, utilize above-mentioned unstable signal to adjust the rotation of main shaft during low power speed.
Simultaneously, the driving method that constitutes disk carving regenerator of the present invention is described as follows.
Fig. 7 is a precedence diagram of explaining CD burning renovation process of the present invention.
As shown in Figure 7, CD burning renovation process of the present invention utilizes light picker and photodetector, extracts unstable signal 10S out at the optical disc surface irradiates light, decides 20S by the imprinting and the regeneration times quick decision of above-mentioned CD.
At this moment, if when the imprinting of CD and regeneration are in the state of low power speed, utilize unstable signal to adjust 30S phase synchronous loop 35.
On the contrary, on the other hand,, utilize the phase reversal wayside signaling (phase reversal interval period) that generates by above-mentioned unstable signal to adjust 40S phase synchronous loop 35 if when the imprinting of above-mentioned CD and regeneration are in the state of high power speed.
At last, adjust the 50S main axis rotation, can carry out stable imprinting and regeneration by different doubly speed by the voltage of adjusting that generates by above-mentioned phase synchronous loop 35.
Therefore, CD burning renovation process of the present invention when low power when speed and high power speed, utilizes unstable signal and phase reversal wayside signaling to adjust the rotation of main shaft effectively respectively, so can carry out stable CD burning and regeneration separately.
Claims (5)
1, a kind of disk carving regenerator, by light picker and photodetector, focal length rub-out signal test section, trail-and-error signal detecting part, data processing division, the servo portion that adjusts, focal length servo driving portion, compositions such as tracking servo drive division and main axle servo portion is characterized in that, also comprise:
Above-mentioned data processing division and the servo portion that adjusts, the feasible band filter that is able to pass through from the unstable signal of the detected frequency band of above-mentioned photodetector;
Detect the phase reversal interval period in the never stabilization signal of from above-mentioned band filter, exporting, the interval test section of phase reversal of output phase counter-rotating wayside signaling;
Reduce the amplitude of the above-mentioned unstable signal of having measured and export the microtome of unstable signal;
Receive phase place/rate signal that above-mentioned phase reversal wayside signaling and unstable signal have optional frequency, the phase synchronous loop that can make sort signal be taken place and export;
Utilize above-mentioned phase place/rate signal to find out mistake, produce the main axis rotation voltage of typing and output to phase place/speed mistake generating unit in main shaft servo.
2, disk carving regenerator as claimed in claim 1 is characterized in that, also comprises: the interval portion that replenishes of phase reversal that replenishes the phase reversal wayside signaling of exporting from the interval test section of above-mentioned phase reversal.
3, disk carving regenerator as claimed in claim 2 is characterized in that, also comprises: calculate from the cycle of the unstable signal of above-mentioned microtome output, and output to the interval unstable event counter that replenishes in the portion of above-mentioned phase reversal.
4, disk carving regenerator as claimed in claim 1 is characterized in that, above-mentioned phase synchronous loop is made up of low band filter, error amplifier and voltage adjustment oscillator.
5, a kind of CD burning renovation process is characterized in that, comprising:
From the stage of optical disc surface output swing (instability) signal;
Determine the stage that above-mentioned CD burning and regeneration are doubly fast;
Under the situation of above-mentioned CD burning and regeneration low power speed, utilize swinging signal to adjust the phase synchronous loop stage;
Under the situation of above-mentioned CD burning and regeneration high power speed, utilize the phase reversal wayside signaling to adjust the phase synchronous loop stage;
According to adjusting the stage that voltage is adjusted main axis rotation that above-mentioned phase synchronous loop generates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066246 CN1746985A (en) | 2004-09-09 | 2004-09-09 | Disk carving regenerator and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410066246 CN1746985A (en) | 2004-09-09 | 2004-09-09 | Disk carving regenerator and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1746985A true CN1746985A (en) | 2006-03-15 |
Family
ID=36166491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410066246 Pending CN1746985A (en) | 2004-09-09 | 2004-09-09 | Disk carving regenerator and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1746985A (en) |
-
2004
- 2004-09-09 CN CN 200410066246 patent/CN1746985A/en active Pending
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