TWI386933B - Method and apparatus for adjusting recording power of optical disc device - Google Patents

Description

Optical disc burning power adjustment method and device

The present invention relates to an optical disk drive, and more particularly to a method and device for adjusting the burning power of an optical disk drive.

The way in which the CD-ROM is burned is to convert the common data into binary data, and then modulate it according to the 8-14 modulation (EFM, Eight to Fourteen Modulation) method, and then burn the binary data into a disc. Land and Pit; when reading, the length of the shore and pit indicates the number of consecutive 0 and 1, and then the data is decoded with the EFM principle. Therefore, accurate control of the length of the shore and pit has a direct impact on the correctness of the data during programming. The main parameters include laser power, pulse width and pulse waveform control, collectively referred to as burning parameters.

In terms of burnable discs, it can be divided into single burning and multiple overwriting. Single-burning discs, such as CD-R and DVD-R, use laser heating to destroy the physical structure of the dye on the disc track, while the undestroyed part is the shore; multiple overwritten discs, such as DVD- RW and DVD-RAM use laser to control the temperature on the track of the optical disc to make a phase change, thereby creating virtual pits and banks. Due to the different programming principles, overwritten CDs use Multi-Pulse waveforms to burn data, while single-burning discs are mostly burned with Non-Multi Pulse waveforms. .

In order to match the characteristics of laser pulse programming, EFM modulation converts the original 8-bit (1-byte) data to 14-bit according to the definition of the DVD specification, which makes the data easier by lengthening the length of the data. Use laser burning and reading take. The data after EFM modulation are 3T, 4T, 5T, 6T, 7T, 8T, 9T, 10T, 11T and 14T, where T represents the length of time required to burn 1-bit data, and the shortest pit/shore length is required. For 3T, the maximum length is 14T; for example, reading DVD at 1X speed, 1T is 38.23ns, reading DVD at 4X speed as an example, and 1T is 9.56 ns.

Figure 1 shows a set of EFM data that needs to be burned on a disc. When the optical head reads the disc data, its reflection coefficient does not change on the pit or the shore. It is read as "0", and the length of the pit and the bank determines the number of "0". number. At the junction of the pit and the shore, the reflection coefficient changes, that is, the front and rear edges of the pit are read as "1".

2 is a schematic diagram of a burn pulse waveform in a non-multiple pulse mode. The programming pulse includes a first burning power Ph (Peak Power) and a second burning power Pm (Bottom Power). In the figure, Pr is the read power. The first burning power Ph indicates the higher burning power used when burning the data (the following is directly explained by Ph), and the second burning power Pm indicates the lower burning power used when burning the data (the following is directly used) Pm for explanation). When burning a pit, the higher laser power is needed at both ends of the pit, and the middle part is only required to use lower power burning because of heat transfer.

The burning quality of the entire disc is determined by the parameters of the burning pulse in Figure 2. Since the dye formulations of the discs are not the same, the burning power parameters of the various discs cannot be shared, even in the same disc factory. The disc has different burning power due to the different speed of burning. Traditionally, CD-ROM manufacturers have made burn-in power adjustment actions for optical discs on the market before mass-produced optical discs, and stored the burn-in power parameters of various optical discs in firmware. When the user puts in the disc, the disc player can find the corresponding burning power parameter in the firmware by using the identification code on the disc. And successfully burned the disc. A disadvantage of the above method is that a lot of labor and time costs must be wasted in the adjustment of the burning power, and when it is necessary to replace different optical heads or control wafers, all the burning power parameters must be readjusted again. In addition, if the quality of the discs produced by the disc factory is inconsistent, or if a new disc is not built with the built-in burning power parameters, the quality of the burned disc will be poor, and the disc may not be successfully burned.

In view of this, it is necessary to provide a method of automatically adjusting the optical head burning power.

It is also necessary to provide a means for automatically adjusting the burning power of the optical head.

A method for adjusting a burn-in power of an optical disc drive, the burn-in power of the optical disc drive comprising a first burn-in power Ph and a second burn-in power Pm, wherein the first burn-in power Ph is greater than the second burn-in power Pm. The initial burning power Ph is pre-set in the optical disc drive, and the method for adjusting the burning power of the optical disc comprises the steps of: importing the initial first burning power Ph; converting the initial first burning power Ph into a plurality of different Ph and use the plural Ph-burning test data to the optical disc; detecting the test data of the Ph-burning using a plurality of different Ph-burning on the optical disc, and obtaining the complex concentration parameter PS of the test data, the concentration parameter PS is The sum of the standard deviations of the shore and pit length of the test data; the second fit of the measured complex number PS and Ph: PS=A(Ph-B) ² +C, the values of parameters A, B, and C are obtained. Determining the optimal first burning power Ph=B; storing the optimal first burning power Ph to burn the optical disk with the optimal first burning power Ph.

A CD player burning power adjusting device, wherein the CD player burning power comprises a first burning power Ph and a second burning power Pm, wherein the Ph is greater than the Pm. The CD player burning power adjusting device comprises: a storage unit, a control unit, a concentration parameter detecting unit and a quadratic fitting unit. The storage unit is configured to store programming parameters and test data information. And a control unit, configured to control the burning operation of the optical head according to the programming parameters in the storage unit. The concentration parameter detecting unit is configured to detect a concentration parameter PS of the pit and the shore of the test data on the optical disk, and the concentration parameter PS is a sum of standard deviations of the pit and the shore length. The quadratic fitting unit is used to quadraze the measured PS and Ph: PS=A(Ph-B) ² + C, and obtain parameters A, B, and C to obtain the best first burning. The power Ph=B is stored in the storage unit.

A method for adjusting a burning power of a disc player, wherein the burning power of the optical disc drive comprises a first burning power Ph and a second burning power Pm, and the first burning power Ph is greater than the second burning power Pm, in the optical disc player The initial first burning power Ph is pre-set, and the method for adjusting the burning power of the optical disk comprises the steps of: converting the initial first burning power Ph into a plurality of different Ph and using the plural Ph burning test data to On the optical disc; detecting a test data of a plurality of Ph burns on the optical disc, and obtaining a complex concentration parameter PS of the shore and pit length of the test data; and secondly fitting the measured complex number PS with Ph; When the PS is determined to be the minimum value, the corresponding Ph value is the best first burning power Ph.

The above-mentioned optical disc burning power adjustment method and device automatically adjusts the optimal burning power according to the characteristics of the optical disc dye and the mathematical algorithm, so as not only can improve the burning quality of the disc, but also The chance of burning a disc is greatly reduced.

In view of the shortcomings of the prior art, a method for adjusting the burning power of the optical disc drive is provided, that is, the power of the burning pulse of the optical disc machine is adjusted, which can adjust and optimize the burning power parameter, and the method can save the application. In adjusting the manpower and time cost of the burning power parameter, it is also possible to avoid the problem that the optical disc player cannot be burned after it leaves the factory and encounters a new optical disc that has no built-in burning power parameters.

Before introducing the CD player burning power adjustment method, first explain the relevant parameter names.

1. Jitter: Due to the physical characteristics of the disc dye and the stability of the optical head to control the laser pulse, the length of the pit and the shore burned onto the disc cannot be all integer multiples T (for convenience, T The distance that the laser moves on the disc during the time is indicated by T in the following), and the actual situation will show a normal distribution. As shown in FIG. 3A and FIG. 3B, wherein the horizontal axis is the measured length of the land and the pit, the unit is T, and the vertical axis is the number of occurrences of the length (indicated by Lg). As shown in Fig. 3, the X point indicates that the total number of 3T shores is 104.2, and the Y point indicates that the total number of 5T pits is 103.7. Jitter is used to quantify the concentration of burned pit or shore length, which is defined as 2.5T. The standard deviation of the number of pits or shores of all lengths between ~3.5T. It can be seen that the smaller the Jitter value is, the better the burning quality is, and the mathematical representation is as shown in formula (1):

Where T _i represents the measured pit or shore length, Indicates the average length of the measured pit or shore, where n is the number of times the measured pit or shore appears.

2. Eye Pattern: Due to the difference in laser power burned onto the disc and the response of the disc dye to the laser temperature, the amplitude of the optical head when reading each data is different. Therefore, if all the waveforms generated by reading the pits/shores of different lengths of 3T~14T are connected together, an eyelet pattern will be formed, as shown in FIG. From the physical meaning of the eye pattern, it can be seen that when the burned pit/shore length is very standard, such as the eye pattern on the left, the curve is very clear, indicating that the Jitter value is also very small; conversely, when the Jitter value is higher, For example, the curve of the eye on the right side is blurred, which indicates that the burned pit/shore is messy and the burning quality is also poor.

3. Asymmetry: The center line of each line in the eye pattern shown in Figure 4 is usually not at the same level (not shown, the following bits are indicated by the symbol "I"), DVD specification Define "asymmetry" to quantify the level difference between the 3T centerline and the 14T centerline. The mathematical representation is shown in equation (2), where the parameters are defined as shown in Figure 5:

The optical disk burning power adjustment method of the preferred embodiment is as follows, as shown in FIG. 6. Ph represents the first burning power of higher power, and Pm represents lower power The second programming power, Duty, represents the rising edge adjustment parameter for adjusting the rising edge position of the programming pulse. The length of the pit is nT (n=3~14), the starting point of the rising edge adjustment parameter Duty is the 3T length of each nT pit, and then the Duty length is calculated forward to determine the position of the rising edge of the burning pulse. Since the CD player burning power adjustment method needs to be applied to various optical discs, according to the empirical value of the experiment, the initial burning parameters are preset for various multiples, as shown in the table. Regardless of which type of disc is adjusted, the optimum set burning power parameter is adjusted by this set value.

Among them, the initial programming parameters need to be adjusted according to the hardware architecture of different optical disc drives, such as small adjustments for the optical head and the control chip. The ratio of the first burning power Ph to the second burning power Pm is defined as Ph/Pm (hereinafter, Ph/Pm is directly described). It can be seen that if Ph/Pm and Ph are known, Pm can be deduced.

After the CD player is initialized, use the initial programming parameters in the above table. In the case of fixed Ph/Pm=1.5, the linear increase and decrease of Ph produces 8 sets of test values, and the test data is burned onto the optical disc, as shown in Figure 7. Show. After the test data was burned onto the optical disc, the standard deviation of the 3T pit and the bank was measured. Since the initial programming parameters are usually not optimal, in order to avoid the interference of 4T and 5T lengths to 3T, , using 3T and nT (n 6) fixed pattern (Fix Pattern) as test data, that is, there is no 4T and 5T data in the test data.

Please refer to FIG. 8 , which is a pit/shore distribution map burned by using test data. It can be seen from FIG. 8 that although the test data does not have 4T pit/shore, part of the 3T is caused because the programming parameters have not been optimized. The length spreads to 2T and 4T. Therefore, a concentration parameter PS (Pulse Sigma) is defined to quantify the degree of concentration of the 3T pit/shore length, and the mathematical expression is as shown in the formula (3).

Where T _{i , P} and T _{j , L} represent the length of the pit and the shore on which the test data is measured, versus Indicates the average length of the pit and the shore of the test data, and n and m are the number of times the pit and the shore of the test data are measured.

After trial-burning and measuring 8 sets of concentration parameter PS, the measured PS and Ph are quadrupled: PS=A(Ph-B) ² +C, and the quadratic curve PS=A (Ph) is obtained. -B) Parameters A, B, and C in ₂ + C are as shown in Fig. 9. It can be seen from PS=A(Ph-B) ² +C that when Ph=B, PS has a minimum value of C. That is, the Jitter obtained by using the Ph is the smallest, that is, the optimum first burning power Ph value matching the initial parameter is obtained.

Due to the relationship between the heating time and the heating power, the optimum value of the first burning power Ph changes with the change of Duty. When the heating time is shorter, the required laser power is required to be larger; when the heating time is increased, the required laser power is relatively small. Therefore, in order to find a smaller target For the number of PS values, it is necessary to change the Duty and simultaneously change the value of the first burning power Ph to perform a trial firing to find a set of optimal combinations.

First, the appropriate power range UB~LB is obtained from the previous quadratic curve PS=A(Ph-B) ² + C, and UB and LB respectively represent the upper and lower limits of the receivable power range, that is, the Jitter in the range The requirement can be met. Here, the upper limit and the lower limit of the power range are taken as ±1.8 times of the minimum value C, so UB and LB can be obtained by the formula (4):

Please also refer to FIG. 10, the UB and LB of the formula (4) can be combined with the experimental formula of FIG. 10 to derive the Duty value of the three sets of tests and the corresponding first burning power Ph. The experimental formula is as follows: Ph[ 0][i]=LB+i*(UB-LB)/7 i=0~7

Ph[1][i]=Ph[0][i]-0.1*(UB+LB)/4 i=0~7

Ph[2][i]=Ph[1][i]-0.1*(UB+LB)/4 i=0~7

The three sets of Duty values are: Duty1=initial Duty, Duty2=Duty1+0.1T, Duty3=Duty2+0.1T. After three sets of Duty and Ph test burn test data onto the optical disc, the PS can be measured to obtain the results shown in Fig. 11, and then two sets of PS=A(Ph-B) ² are obtained by quadratic fitting. C1, C2, C3 in +C, where B corresponding to the smallest C value is the best first burning power Ph, and the best Duty can also be obtained.

The second burning power Pm is adjusted by using a random pattern (Random) Pattern) 3T~14T test data, combined with 3 different Pm=30%Ph, 50%Ph and 70%Ph (Ph/Pm≒3.3, 2.0 and 1.4), test the test data onto the disc and measure Its asymmetry is shown in Figure 11. Since the measurement asymmetry must be achieved by means of a specific control chip, for this purpose, the present embodiment defines an analogous asymmetry parameter, called the non-balancing parameter NB (Non-Balance), which is the average length of all 3T pits. Subtracting the average length of all 3T shores, the mathematical description is shown in equation (5), which eliminates the step of measuring asymmetry.

Wherein, T _{i , P} and T _{j , L} represent the length of the pit and the shore of the test data, and n and m represent the number of times the pit and the bank of the test data are measured.

Please refer to FIG. 13 , which is a measurement result of three sets of Ph/Pm and non-equilibrium parameter NB, and fits it once: NB=a*Ph/Pm+b, and obtains parameters a and b to obtain zero-crossing. The more the point is -b/a, the asymmetry of the point is zero, so the optimum Ph/Pm=-b/a, so that the optimal second burning power Pm can be obtained.

Referring to FIG. 14, the method for adjusting the burning power of the optical disc includes the following steps:

Step S201, importing a preset initial programming parameter, wherein the initial programming parameter is an experimental value, and is stored in a storage unit of the optical disk drive, as shown in Table 1, and the initial programming parameter is according to hardware of different optical disk drives. The architecture will vary.

Step S203, generating a test using a fixed pattern (Fix Pattern) The data, that is, the 4T and 5T data are not present in the test data to avoid the interference of 4T and 5T length on 3T.

Step S205, fixing Ph/Pm, linearly increasing the initial first burning power Ph to generate 8 Ph, and using the plural Ph to test the test data onto the optical disc. The number of Phs generated may be greater than or equal to three.

Step S207, detecting the concentration parameter PS of the burned shore and pit length on the optical disc, that is, the sum of the standard deviations of the lengths of the two, and the 8 Ph values correspond to 8 PS values, as shown in the foregoing formula (3).

In step S209, the measured 8 PS and Ph are quadraticly fitted: PS=A(Ph-B) ² + C, and the values of parameters A, B, and C are obtained.

In step S211, the power range UB~LB is obtained according to the obtained values of A, B, and C, that is, the Jitter of the burned data in the power range UB~LB meets the requirements, and the power range calculation method in this embodiment is as shown in the formula ( 4), no longer repeat them.

In step S213, it is determined whether the minimum PS value is within the power range UB~LB (please refer to FIG. 11 at the same time), and if yes, go to step S215, and if no, return to step S205.

In step S215, the optimal first burning power Ph=B is determined.

Step S217, the first burning power Ph is fixed, and three different Ph/Pm test burn test materials are used on the optical disc. In this embodiment, three different Pm=30% Ph, 50% Ph and 70% Ph (ie, Ph/Pm = 3.3, 2.0 and 1.4).

Step S219, measuring the fixed first burning power Ph when burning on the optical disc The non-equilibrium parameter NB of the shore and pit of the test data is used instead of the asymmetry test. The non-equilibrium parameter NB is the average length of all 3T pits minus the average length of all 3T banks. For the calculation method, see Equation (5), and details are not described herein.

In step S221, the unbalanced parameter NB and Ph/Pm are fitted once by NB=a*Ph/Pm+b, and the values of the parameters a and b are obtained.

In step S223, the optimum Ph/Pm=-b/a is determined.

In step S225, the optimal second burning power Pm is obtained according to the optimal first burning power Ph=B and Ph/Pm=-b/a.

In step S227, trial firing is performed using the optimal first burning power Ph and the optimum second burning power Pm.

In step S229, it is detected whether the quality of the burned quality using the optimum first burning power Ph and the optimum second burning power Pm meets the requirements. If yes, the process proceeds to step S227, and if not, the process returns to step S217. Whether the detection of the burning quality meets the requirements can be determined by detecting the Jitter value of the burned data and the parity PI/PO (Parity Inner/Parity Outer), and both the Jitter and the PI/PO detection are specified in the DVD specification. The content is detected and will not be described again.

In step S231, the optimal first burning power Ph and the optimal second burning power Pm are stored, and the flow ends. When the data is burned onto the optical disk, the optimum first burning power Ph and the optimum second burning power Pm are used to adjust the burning power of the optical head.

After step S223, the optimum Ph/Pm = -b/a can also be stored. The above-mentioned CD player burning power adjustment method is based on the characteristics and mathematical calculation of the optical disc dye The method automatically adjusts the optimal burning power, which not only improves the burning quality of the disc, but also greatly reduces the chance of burning the disc. Using the algorithm of the balance parameter NB, the step of asymmetry detection is omitted, and the current asymmetry detection requires a dedicated wafer to be completed, which can reduce the manufacturing cost and reduce the computational complexity.

As shown in FIG. 15, a CD player burning power adjusting device 300 includes a storage unit 302, a control unit 304, a concentration parameter detecting unit 306, a quadratic fitting unit 308, a power range calculating unit 310, and a determining unit 312. The unbalanced parameter testing unit 314, the primary fitting unit 316, and the burning power calculation unit 318.

The storage unit 302 is configured to store programming parameters and test data information. The storage unit 302 includes an initial parameter storage module 322 for storing the initial programming power parameter, including the initial first burning power Ph, and the ratio of the initial first burning power Ph and the initial second burning power Pm Ph/Pm. The optimal parameter storage module 324 is configured to store the optimal burning power parameter measured according to the current optical disc 100; the test data storage module 326; and the test data used for storing the trial burning, which is used in this embodiment. The fixed pattern of 3T and nT(n 6) is used as test data, that is, there is no 4T and 5T data in the test data.

The control unit 304 is configured to control the burning operation of the optical head 200 according to the programming parameters in the storage unit 302.

The concentration parameter detecting unit 306 is configured to detect the concentration parameter PS of the pit and the shore of the test data on the optical disc 100, which is the sum of the standard deviations of the pit and the bank length. The specific formula is as in the foregoing formula (3), Let me repeat.

The quadratic fitting unit 308 is configured to quadraze the measured PS and Ph: PS=A(Ph-B) ² +C, and obtain the values of the parameters A, B, and C. When Ph = B, PS has a minimum value of C. That is, Ph=B, the jitter obtained by the Ph is the smallest, that is, the best first burning power Ph=B matching the initial parameters is obtained.

The power range calculation unit 310 is configured to determine the power range UB~LB according to the values of the parameters A, B, and C, and UB and LB respectively represent the upper and lower limits of the power range, and the mathematical operation formula is as shown in the foregoing formula (4).

The determining unit 312 is configured to determine whether the minimum concentration parameter PS falls within the power range LB and UB. If so, the optimal first programming power Ph=B is determined and stored in the optimal parameter storage module 324. If not, the test data is re-burned for detection.

The unbalanced parameter testing unit 314 is configured to detect the unbalanced parameter NB of the 3T shore and the 3T pit of the test data on the optical disc, which is the average length of all 3T pits minus the average length of all 3T shores, and the calculation method is shown in the formula (5). ).

A fitting unit 316 is used to fit NB and Ph/Pm once: NB=a*Ph/Pm+b, and parameters a and b are obtained.

The burn-in power calculation unit 318 is configured to obtain an optimum Ph/Pm=-b/a according to the values of the parameters a and b, and store them in the optimal parameter storage module 324. When reading the material on the optical disc 100, the control unit 304 adjusts the burning power of the optical head 200 using the optimum first burning power Ph and the optimum Ph/Pm = -b/a. It is also possible to first obtain the value of the optimal second burn rate power Pm according to the best first burn-in power Ph and the optimum Ph/Pm=-b/a, and then according to the best first burn-in power Ph and the best The value of the second firing rate power Pm adjusts the burning power of the optical head 200.

The above-mentioned optical disk burning power adjusting device 300 automatically adjusts the optimal burning power according to the characteristics of the optical disk 100 dye and the mathematical algorithm, so that not only the burning quality of the optical disk 100 but also the burning of the optical disk 100 can be improved. The chances are greatly reduced. Using the algorithm of the balance parameter NB, the step of asymmetry detection is omitted, and the current asymmetry detection requires a dedicated wafer to be completed, which can reduce the manufacturing cost and reduce the computational complexity.

100‧‧‧DVD

312‧‧‧Judgement unit

200‧‧‧ optical head

314‧‧‧Unbalanced parameter test unit

300‧‧‧CD player burning power adjustment device

316‧‧‧One fitting unit

302‧‧‧storage unit

318‧‧‧ burning power calculation unit

304‧‧‧Control unit

322‧‧‧Initial parameter storage module

306‧‧‧ Concentration parameter detection unit

324‧‧‧ actual parameter storage module

308‧‧‧Second fitting unit

326‧‧‧Test data storage module

310‧‧‧Power range calculation unit

S201~S231‧‧‧VCD machine burning power adjustment method flow steps

Figure 1 is a schematic diagram of the programming clock and EFM data.

2 is a schematic diagram of a burn pulse waveform in a non-multiple pulse mode.

Figure 3A is a schematic diagram of the Jitter of the experimentally measured shore.

Figure 3B is a schematic diagram of the Jitter of the experimentally measured pit.

Figure 4 is a schematic view of the eyelet pattern measured by the experimental measurement.

Figure 5 is a schematic view of the eye pattern obtained by the asymmetry detection.

FIG. 6 is a schematic diagram of a non-multiple pulse mode burn pulse waveform according to a preferred embodiment.

FIG. 7 is a schematic diagram of a burn pulse of a complex linear increase and decrease of the Ph test value.

Figure 8 is a schematic diagram showing the pit/shore distribution of the test data.

Fig. 9 is a schematic diagram showing the PS waveform of the pit/shore length concentration parameter burned by the test data.

FIG. 10 is a schematic diagram of an experimental formula algorithm for deriving a test Duty value.

FIG. 11 is a schematic diagram showing the PS waveform of the pit/shore length concentration parameter of the test data burned by the plurality of programming parameters.

Figure 12 is a schematic diagram of a burn pulse using a plurality of different Ph/Pm programming parameters.

FIG. 13 is a waveform diagram of the unbalanced parameter NB.

FIG. 14 is a flow chart showing the steps of the method for adjusting the burning power of the optical disk drive according to a preferred embodiment.

FIG. 15 is a structural diagram of a CD player burning power adjusting device according to a preferred embodiment.

S201~S231‧‧‧VCD machine burning power adjustment method flow steps

Claims (21)

A method for adjusting a burning power of a disc player, wherein the burning power of the optical disc drive comprises a first burning power Ph and a second burning power Pm, and the first burning power Ph is greater than the second burning power Pm, in the optical disc player The initial first burning power Ph is pre-set, and the method for adjusting the burning power of the optical disk comprises the steps of: importing the initial first burning power Ph; converting the initial first burning power Ph into a plurality of different Phs and using The plurality of different Ph-burning test data is sent to the optical disc; detecting the test data of the different Ph-burning on the optical disc, and obtaining the complex concentration parameter PS of the test data, the concentration parameter PS is the test data. The sum of the standard deviations of the length of the bank and the pit; the second fit of the measured complex number PS and Ph: PS=A(Ph-B) ² +C, the values of the parameters A, B, and C are determined; The first burning power Ph=B; storing the optimal first burning power Ph to burn the optical disk with the optimal first burning power Ph. The method for adjusting the burning power of the optical disk drive according to claim 1, wherein the conversion method in which the initial first burning power Ph is converted into a plurality of different Ph steps is based on the initial first burning power Ph. Based on a linear transformation. The method for adjusting the burning power of the optical disk drive according to the first aspect of the invention, wherein the initial ratio of the initial first burning power Ph and the initial second burning power Pm is pre-set in the optical disk drive, After the optimal first burning power Ph=B is obtained, the method further comprises the steps of: converting the initial ratio Ph/Pm into a plurality of different Ph/Pm, using the optimal first burning power Ph and the complex number. Ph/Pm tests the test data onto the optical disc according to the test; measures the non-equilibrium parameter NB of the shore and pit of the test data which is burned when using a plurality of different Ph/Pm, and the mathematical expression of the unbalanced parameter NB is: Where T _{i , P} and T _{j , L} represent the length of the shore and pit of the test data, and n and m represent the number of times the shore and pit of the test data are measured; the NB and Ph/Pm Perform a fitting: NB = a * Ph / Pm + b, find the values of parameters a and b; determine the best Ph / Pm = - b / a; store the best Ph / Pm. The method for adjusting the burning power of the optical disc drive according to claim 3, wherein the obtaining the optimal first burning power Ph and determining the optimal Ph/Pm=-b/a further comprises: according to the optimal The first burning power Ph and the optimal Ph/Pm are the steps of obtaining the optimal second burning power Pm to perform the optical disk by using the optimal first burning power Ph and the optimal second burning power Pm. Burn. The method for adjusting the burning power of the optical disk drive according to the first aspect of the invention, wherein after determining the parameters A, B, and C in the PS=A(Ph-B) ² + C, the method further includes the following steps: The obtained values of A, B, and C determine the power range, and the power range represents an acceptable power level. The mathematical expression of the power range is as follows: Where LB represents the lower limit of the power range, UB represents the upper limit of the power range; determines whether the concentration parameter PS minimum value is within the power range, and if so, obtains the best first programming power Ph=B, if No, the test data is re-burned to perform the detection of the concentration parameter PS. The method for adjusting the burning power of the optical disc drive according to claim 1, wherein the mathematical expression of the concentration parameter PS of the shore and pit length of the test data is: Where T _{i , P} and T _{j , L} represent the length of the shore and pit of the test data. versus Indicates the average length of the shore and pit of the test data, and n and m indicate the number of times the shore and pit of the test data were measured. The method for adjusting the burning power of the optical disc drive according to the first aspect of the invention, wherein the test data recorded on the optical disc is the EFM encoded test data, and the data modulated by the EFM is 3T, 4T, 5T. , 6T, 7T, 8T, 9T, 10T, 11T and 14T, where T represents the time required to burn 1-bit data, and 4T and 5T data are not present in the EFM-encoded test data. An optical disc burning power adjusting device, wherein the optical disc burning power comprises a first burning power Ph and a second burning power Pm, wherein the first burning power Ph is greater than the second burning power Pm, and the improvement is: The CD player burning power adjusting device comprises: a storage unit, a control unit, a concentration parameter detecting unit and a quadratic fitting unit; the storage unit is configured to store programming parameters and test data information; and the control unit is configured to perform the storage according to the storage unit The programming parameter in the unit controls the burning operation of the optical head; the concentration parameter detecting unit is configured to detect the concentration parameter PS of the pit and the shore of the test data on the test disc, the concentration parameter PS is pit and shore The sum of the standard deviations of the lengths; the quadratic fitting unit is used to quadraze the measured PS and Ph: PS=A(Ph-B) ² + C, and obtain parameters A, B, and C, The best first burning power Ph=B is output and stored in the storage unit. The optical disc burning power adjusting device according to claim 8, wherein the mathematical expression of the concentration parameter PS of the shore and pit length of the test data is: Where T _{i , P} and T _{j , L} represent the length of the shore and pit of the test data. versus Indicates the average length of the shore and pit of the test data, and n and m indicate the number of times the shore and pit of the test data were measured. The optical disk burning power adjusting device of claim 8, wherein the optical disk burning power adjusting device further comprises: an unbalanced parameter testing unit, configured to detect the shore and the pit of the test data on the optical disk. The non-equilibrium parameter NB, which is the difference between the average length of all pits and the average length of all the banks; a fitting unit for fitting NB and Ph/Pm once: NB=a*Ph/Pm+b, The parameters a and b are obtained, and the burn-in power calculation unit is configured to obtain an optimum Ph/Pm=-b/a based on the values of the parameters a and b and store them in the storage unit. The optical disc burning power adjusting device according to claim 10, wherein the mathematical expression of the unbalanced parameter NB is: Where T _{i , P} and T _{j , L} represent the length of the shore and pit of the test data, and n and m represent the number of times the shore and pit of the test data are measured. The optical disk burning power adjusting device of claim 8, wherein the optical disk burning power adjusting device further comprises: a power range calculating unit, configured to obtain a power range according to the values of the parameters A, B, and C. UB~LB, UB and LB represent the upper and lower limits of the power range. The mathematical expression is: a determining unit, configured to determine whether the minimum concentration parameter PS falls within the power range LB and UB, and when the concentration parameter PS falls within the power range, determine an optimal first burning power Ph=B and store With the best parameter storage module. A method for adjusting a burning power of a disc player, wherein the burning power of the optical disc drive comprises a first burning power Ph and a second burning power Pm, and the first burning power Ph is greater than the second burning power Pm, in the optical disc player The initial first burning power Ph is pre-set, and the method for adjusting the burning power of the optical disk comprises the steps of: converting the initial first burning power Ph into a plurality of different Ph and using the plural Ph burning test data to On the optical disc; detecting a test data of a plurality of Ph burns on the optical disc, and obtaining a complex concentration parameter PS of the shore and pit length of the test data, the concentration parameter PS of the shore and pit length of the test data is The sum of the standard deviations of the shore and pit length of the test data; the second fit of the measured complex PS and Ph; When the PS is determined to be the minimum value, the corresponding Ph value is the best first burning power Ph. The method for adjusting the burning power of the optical disk drive according to claim 13 , wherein the conversion method in which the initial first burning power Ph is converted into a plurality of different steps is the initial first burning power Ph. Based on a linear transformation. The method for adjusting the burning power of the optical disk drive according to claim 13 , wherein the mathematical operation of the concentration parameter PS of the shore and pit length of the test data is: Where T _{i , P} and T _{j , L} represent the length of the shore and pit of the test data. versus Indicates the average length of the shore and pit of the test data, and n and m indicate the number of times the shore and pit of the test data were measured. The method for adjusting the burning power of the optical disk drive according to claim 13 , wherein the mathematical operation of the quadratic fitting of the complex PS and Ph is: PS=A(Ph-B) ₂ +C, and the parameter A is obtained. The value of B, C, the best first burning power Ph = B. The method for adjusting the burning power of the optical disc drive according to claim 16, wherein after determining parameters A, B, and C in PS=A(Ph-B) ² + C, the method further includes the following steps: The obtained values of A, B, and C determine the power range, and the power range represents an acceptable power level. The mathematical expression of the power range is: Where LB represents the lower limit of the power range, UB represents the upper limit of the power range; determines whether the minimum value of the concentration parameter PS is within the power range, and if so, obtains the optimal first programming power Ph=B, If not, re-burn the test data to perform the detection of the concentration parameter PS. The method for adjusting the burning power of the optical disk drive according to claim 13 , wherein the initial ratio of the initial first burning power Ph and the initial second burning power Pm is pre-set in the optical disk drive, After the optimal first burning power Ph is obtained, the method further comprises the steps of: converting the initial ratio Ph/Pm into a plurality of different Ph/Pm, using the optimal first burning power Ph and the complex number Ph/ Pm tests the test data onto the optical disc according to the test; measures the non-equilibrium parameter NB of the shore and the pit of the test data which is burned when the plural Ph/Pm is used, and the mathematical expression of the unbalanced parameter NB is: Wherein, T _{i , P} and T _{j , L} represent the length of the shore and the pit in which the test data is measured, and n and m represent the number of times the shore and the pit of the test data are measured; the complex number NB and Ph/ Pm performs a fitting; determining that the corresponding Ph/Pm value when NB is zero is the best Ph/Pm. The method for adjusting the burning power of the optical disc drive according to claim 18, wherein the mathematical operation of the complex NB and Ph/Pm is: NB=a*Ph/Pm+b, and the parameters are obtained. The values of a and b, the best Ph/Pm = -b/a. For example, the method for adjusting the burning power of the optical disk drive according to claim 18 of the patent application scope, After determining the optimal first burning power Ph and determining the optimal Ph/Pm, the method further comprises: obtaining the optimal second burning power Pm according to the optimal first burning power Ph and the optimal Ph/Pm. Steps to burn the optical disc by using the optimal first burning power Ph and the optimal second burning power Pm. The method for adjusting the burning power of the optical disc drive according to claim 13 , wherein the test data burned on the optical disc is the EFM encoded test data, and the data modulated by the EFM is 3T, 4T, 5T. , 6T, 7T, 8T, 9T, 10T, 11T and 14T, where T represents the time required to burn 1-bit data, and 4T and 5T data are not present in the EFM-encoded test data.