CN100555429C

CN100555429C - Rotation speed control device of optical disk recorder and optical disk recording control method

Info

Publication number: CN100555429C
Application number: CNB2006100789268A
Authority: CN
Inventors: 张鹤继; 林义钧
Original assignee: Sunplus Technology Co Ltd
Current assignee: Sunplus Technology Co Ltd
Priority date: 2006-04-27
Filing date: 2006-04-27
Publication date: 2009-10-28
Anticipated expiration: 2026-04-27
Also published as: CN101064144A

Abstract

The invention relates to a rotation speed control device of an optical disk recorder, which comprises the optical disk recorder and a rotation speed control device, wherein the optical disk recorder comprises a buffer area and a servo system, the rotation speed control device comprises a buffer area detection unit and a rotation speed determination unit, is coupled between the buffer area and the servo system, and is used for adjusting the rotation speed of a main shaft motor of an optical disk according to the data volume of the buffer area and the change thereof so as to control the recording speed of the optical disk. The invention also provides a device for controlling the rotating speed of the optical disk recorder by the data flow of the flow detection unit detection bus. The invention also provides a method for controlling the optical disc recording. The device and the method provided by the invention are used for avoiding the interruption of the optical disk recording caused by insufficient data in the buffer area.

Description

The revolution speed control device of CD burning device and CD burning control method

Technical field

The present invention relates to a kind of CD burning device, the particularly a kind of revolution speed control device and CD burning control method that can reduce the CD burning device of imprinting interruption chance of occurrence.

Background technology

The optical memory system that generally has real-time imprinting function, DVD videocorder (Digital VideoDisc recorder for example, be called for short DVD recorder) or CD burning device (disk recorder), its imprinting pattern of mainly using is clv mode (Constant Linear Velocity Mode is called for short the CLV pattern).Promptly imprinting with fixing linear velocity imprinting, when adopting this kind pattern, when running into the buffer area data deficiencies, will take place and interrupt in the CD burning speed of setting according to the user.

Fig. 1 is the optical memory system calcspar of prior art.Audio-visual scrambler 110 inputs in the buffer area 132 with digital coding after by bus 120 and keeps in, and scrambler 134 exports servo-drive system 136 to via buffer area 132 sense datas after carrying out digital coding, and carries out the CD burning action via servo-drive system 136.According to the compressibility difference that the user sets, the audio-visual scrambler 110 in the DVD recorder has different data bit rate (data bit rate), the speed difference of digital coding just.Too slow for preventing etch-recording speed, the CD burning speed that sets usually can be faster slightly than the coding rate of the audio-visual scrambler 110 in the DVD recorder.(buffer under run error) takes place so regular meeting has because of buffer area 132 data deficiencies cause the situation that the CD burning action is interrupted.When the frequency that interrupts is very frequent, just can cause etching/recording quality not good, influence the playback quality after the CD burning.

In the prior art, too high for the frequency that prevents to interrupt, common capacity by the increase buffer area reduces the frequency of interruption, but the mode of increase buffer area can cause cost to increase, and does not meet cost benefit.

Summary of the invention

The revolution speed control device that the purpose of this invention is to provide a kind of CD burning device according to data volume and the variation thereof that buffer area is kept in, is adjusted the rotating speed of CD Spindle Motor and is controlled CD burning speed, avoids imprinting to interrupt.

Another object of the present invention provides a kind of revolution speed control device of CD burning device, according to the data traffic of bus, adjusts the rotating speed of CD Spindle Motor and controls CD burning speed, avoids imprinting to interrupt.

Another purpose of the present invention provides a kind of CD burning control method of optical memory system, according to data volume in the buffer area and variation thereof, adjusts the rotating speed of CD Spindle Motor and controls CD burning speed, reduces the chance of occurrence that imprinting is interrupted.

Another purpose of the present invention provides a kind of CD burning control method of optical memory system, according to the flow of bus transfer data, adjusts the rotating speed of CD Spindle Motor and controls CD burning speed, avoids imprinting to interrupt.

Another purpose of the present invention provides a kind of method for controlling number of revolution of CD burning device, according to data volume in the buffer area and variation thereof, adjusts the rotating speed of CD Spindle Motor and controls CD burning speed, reduces the chance of occurrence that imprinting is interrupted.

Another purpose of the present invention provides a kind of method for controlling number of revolution of CD burning device, according to the flow of bus transmissioning data, adjusts the rotating speed of CD Spindle Motor and controls CD burning speed, avoids imprinting to interrupt.

The revolution speed control device of CD burning device provided by the invention, be applicable to that adjustment is the CD burning speed of the optical memory system of core with the CD burning device, this optical memory system comprises a CD burning device, this CD burning device contains a buffer area and servo-drive system, and this revolution speed control device comprises:

The buffer area detecting unit is coupled to described buffer area, is used to detect the parameter of this buffer area, and data are detected in the output buffers district; And

The rotating speed determining unit, be coupled between this buffer area detecting unit and this servo-drive system, and according to described buffer area detection data, output CD speed signal, described servo-drive system is adjusted the CD burning speed of this optical memory system according to described CD speed signal.

Preferably, described optical memory system also comprises bus, and in order to transmit data to described buffer area, this revolution speed control device also comprises:

The flow detection unit, be coupled between this bus and this rotating speed determining unit, be used to detect the speed of this bus transmissioning data, and the output bus data bit rate is to this rotating speed determining unit, this rotating speed determining unit is adjusted the described CD speed signal of output to this servo-drive system according to this bus data code check.

Preferably, the parameter of described buffer area is the data volume in the buffer area, or is the variable quantity of the data volume in the buffer area; The detection data of this buffer area comprise: the variable quantity of data volume and the max cap. of this buffer area in the data volume in this buffer area, this buffer area.

Preferably, this optical memory system also comprises audio-visual scrambler, is coupled to this bus, is used for the video-audio data coding, and transmits a data rate information to this bus according to an audio-visual coding setting value.

Preferably, to transmit the interface of described data bit rate be advanced techniques configuration package ATAPI interface to wherein said bus.

The revolution speed control device of another kind of CD burning device provided by the invention, be applicable to that adjustment is the CD burning speed of the optical memory system of core with the CD burning device, this optical memory system comprises CD burning device and bus, this CD burning device contains buffer area and servo-drive system, and this revolution speed control device comprises:

The flow detection unit is coupled to described bus, is used to detect the speed of this bus to these buffer area transmission data, and the output bus data bit rate; And

The rotating speed determining unit is coupled between this flow detection unit and the described servo-drive system, and according to described bus data code check output CD speed signal, described servo-drive system is adjusted the CD burning speed of this optical memory system according to this CD speed signal.

Preferably, this optical memory system also comprises audio-visual scrambler, is coupled to described bus, is used for the video-audio data coding, and transmits a data rate information to this bus according to audio-visual coding setting value.

Preferably, to transmit the interface of this data bit rate be advanced techniques configuration package ATAPI interface to described bus.

The present invention also provides a kind of CDRW method of optical memory system, and this optical memory system comprises a CD burning device, and this CD burning device contains a buffer area and a servo-drive system, and this CDRW method comprises the following steps:

(1) detects the parameter of this buffer area, and export the detection data of a buffer area;

(2), export a CD speed signal according to the detection data of this buffer area;

(3) adjust the rotating speed of the CD Spindle Motor of this optical memory system according to this CD speed signal.

Preferably, this optical memory system also comprises a bus, is coupled to this buffer area, and it is temporary to be used to transfer data to this buffer area,

In step (1), also comprise step (1A): detect this bus and transmit the speed of data, and export a bus data code check to this buffer area;

In step (2), also comprise step (2A):, export a CD speed signal according to this bus data code check.

Preferably, step (3) comprising: according to this CD speed signal, make the CD Spindle Motor obtain an initial speed.

Preferably, step (3) also comprises:

3a, according to the new rotating speed of one group of this CD Spindle Motor of calculation of parameter;

3b, judge that the new rotating speed of this CD Spindle Motor calculate is whether in the predetermined range of speeds, if then enter step 3c; If not, then revise the new rotating speed of this CD Spindle Motor in the predetermined range of speeds;

3c, judge whether the data volume of this buffer area exceeds the minimum data amount of this buffer area, if not, enter the treatment step of a buffer area data deficiencies; If,

3d, determine the new rotating speed of this CD Spindle Motor and set servo parameter; And

3e, judge whether the imprinting process finishes, if not, then be back to step 3a, if then finish CD burning.

Preferably, this group of parameter comprises among the step 3a: the current rotating speed of this CD Spindle Motor, with respect to the CD speed signal of bus data code check, the detection data of this buffer area.

Preferably, should the predetermined range of speeds comprise among the described step 3b:

1) more than or equal to the initial speed of 0.7 times CD Spindle Motor;

2) between 0.9 times of current rotating speed to 1.1 times current rotating speed.

Preferably, the parameter of this buffer area comprises: the data volume in this buffer area, the perhaps variable quantity of the data volume in this buffer area; The detection data of this buffer area comprise: the variable quantity of data volume and the max cap. of this buffer area in the data volume in this buffer area, this buffer area.

Preferably, this optical memory system also comprises an audio-visual scrambler, is coupled to this bus, also comprises step before in step (2A): transmit a data rate information to this bus according to an audio-visual coding setting value.

The present invention provides a kind of CDRW method of optical memory system simultaneously, and this optical memory system comprises a CD burning device and a bus, and this CD burning device contains a buffer area and a servo-drive system, and this CDRW method comprises the following steps:

(1) detects this bus and transmit the speed of data, and export a bus data code check to this buffer area;

(2), export a CD speed signal according to this bus data code check;

(3) adjust the CD burning speed of this optical memory system according to this CD speed signal.

Preferably, this optical memory system also comprises an audio-visual scrambler, is coupled to this bus, also comprises step before in step (2): transmit a data rate information to this bus according to an audio-visual coding setting value.

The present invention also provides a kind of method for controlling number of revolution of CD burning device, be applicable to the CD burning speed of adjustment with this CD burning device optical memory system that is core, this optical memory system comprises the CD burning device, this CD burning device contains buffer area and servo-drive system, and this method for controlling number of revolution comprises the following steps:

(1) parameter of the described buffer area of detection, and data are detected in the output buffers district;

(2) detect data according to this buffer area, output CD speed signal; And

(3) this servo-drive system is adjusted the rotating speed of the CD Spindle Motor of this optical memory system according to this CD speed signal.

Preferably, this optical memory system also comprises bus, is coupled to this buffer area, in order to transmitting data to described buffer area,

In step (1), also comprise step (1A): detect the speed of this bus transmissioning data, and export a bus data code check;

In step (2), also comprise step (2A):, adjust described CD speed signal according to this bus data code check.

Preferably, the parameter of this buffer area is the data volume in this buffer area, or is the variable quantity of data volume in this buffer area; The detection data of this buffer area comprise: the variable quantity of data volume and the max cap. of this buffer area in the data volume in this buffer area, this buffer area.

Preferably, this optical memory system also comprises audio-visual scrambler, is coupled to this bus, also comprises step before in step (2A): transmit a data rate information to this bus according to an audio-visual coding setting value.

The present invention also provides a kind of method for controlling number of revolution of CD burning device, be applicable to the CD burning speed of adjustment with this CD burning device optical memory system that is core, this optical memory system comprises CD burning device and bus, this CD burning device contains a buffer area and servo-drive system, and this method for controlling number of revolution comprises the following steps:

(1) according to the speed of this bus to these buffer area transmission data, and the output bus data bit rate;

(2) according to this bus data code check, output CD speed signal; And

Preferably, wherein this optical memory system also comprises audio-visual scrambler, is coupled to this bus, it is characterized in that, also comprises before in step (2): according to the setting value of this audio-visual scrambler, the data rate information that transmits is to this bus.

The present invention adjusts the mode of CD burning speed because of the flow that adopts data volume in the real-time detection buffer area and variation and bus transmissioning data, avoid causing CD burning to interrupt, and then promote the quality and stability of CD burning because of data volume in the buffer area is not enough; And the present invention needn't increase the capacity of buffer area, thereby the cost that can avoid causing thus increases.

For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and cooperate appended diagram, be described in detail below.

Description of drawings

Fig. 1 is a prior art optical memory system calcspar;

Fig. 2 is the optical memory system calcspar of first embodiment of the invention;

Fig. 3 is the method for controlling number of revolution process flow diagram of the CD burning device of second embodiment of the invention;

Fig. 4 is the method for controlling number of revolution process flow diagram of the CD burning device of third embodiment of the invention.

Embodiment

Fig. 2 is the optical memory system calcspar of first embodiment of the invention.Optical memory system 200 comprises audio-visual scrambler 210, bus (Integrated Drive Electronics bus is called for short IDE bus) 220, CD burning device 230.Wherein CD burning device 230 comprises buffer area (Buffer) 232, scrambler 234, servo-drive system 236 and revolution speed control device 240.Wherein revolution speed control device 240 comprises buffer area detecting unit 242, flow detection unit 244, rotating speed determining unit 246.

Bus 220 is coupled between audio-visual scrambler 210 and the buffer area 232, and bus 220 can be sent to the data behind audio-visual scrambler 210 codings buffer area 232 and keep in.Scrambler 234 is coupled between buffer area 232 and the servo-drive system 236, and is with the data of being kept in the buffer area 232, required for the CD burning action via being sent to servo-drive system 236 behind the coding again.

Buffer area detecting unit 242 is coupled between buffer area 232 and the rotating speed determining unit 246, change in order to detect the data volume and the data volume of being kept in the buffer area 232, and data BFD detects to rotating speed determining unit 246 in the output buffers district according to this.Described buffer area detects the max cap. that data BFD mainly comprises buffer area data volume BUF and data volume changes delta BUF and this buffer area.Flow detection unit 244 is coupled between bus 220 and the rotating speed determining unit 246, in order to the speed of the transmission data of testbus 220, and according to this output bus data bit rate IBR to rotating speed determining unit 246.Buffer area detecting unit 242 can realize having in field of the present invention and know the knowledgeable usually by hardware or firmware with flow detection unit 244, via exposure of the present invention, should know by inference easily, does not add at this and gives unnecessary details.

Rotating speed determining unit 246 also is coupled between bus 220 and the servo-drive system 236, and according to buffer area detection data BFD and bus data code check IBR, export CD speed signal DSS to servo-drive system 236,236 CD burning speed of adjusting optical memory system 200 according to CD speed signal DSS of servo-drive system.Particularly, in the present embodiment, servo-drive system 236 is adjusted and is responsible for the principal axis motor rotation speed that CD rotates in the optical memory system 200, to adjust CD burning speed according to CD speed signal DSS.

In the present embodiment, described bus 220 is the IDE transmission interface, audio-visual scrambler 210 is according to the employed compressibility difference of user, have different audio-visual coding setting values, and transmit a data rate information to this bus 220 according to this audio-visual coding setting value, detect the data rate of this bus via the flow detection unit of this bus, and output data code check DBR is sent to rotating speed determining unit 246, can dispose package interface (Advanced Technology Attachment PacketInterface is called for short ATAPI) described this data bit rate of protocol transmission DBR by advanced techniques.And rotating speed determining unit 246 is adjusted CD speed signal DSS according to this data bit rate DBR, and at this moment, 236 of servo-drive systems make the CD burning speed of optical memory system 200 have initial value according to CD speed signal DSS.

Carry out in the process of CD burning action at optical memory system 200, data volume and data volume that buffer area detecting unit 242 detects in the buffer area 232 in real time change, and data BFD detects to rotating speed determining unit 246 in the output buffers district according to this.The data traffic of flow detection unit 244 real-time testbus 220, and according to this output bus data bit rate IBR to rotating speed determining unit 246.Rotating speed determining unit 246 detects data BFD and bus data code check IBR according to buffer area, adjusts CD speed signal DSS in real time, avoids the CD burning action of optical memory system 200 to interrupt.

When data volume deficiency in the buffer area 232 or the reduction of the data traffic of bus 220, promptly reduce the rotating speed of CD Spindle Motor.When the data volume in the buffer area 232 too much or the data traffic of bus 220 is when rising, promptly improve the rotating speed of CD Spindle Motor.In view of the above, avoid, make that the data volumes of keep in the buffer area 232 are not enough and CD burning takes place move interruption because the data traffic of CD burning speed and bus 220 does not match.

Both adopt buffer area detecting unit 242 to detect the buffer area situation in the foregoing description, and adopted flow detection unit 244 testbus flows to realize adjusting CD speed again.But, only use one of them of said two units, can realize purpose of the present invention equally.

Fig. 3 is the method for controlling number of revolution process flow diagram of the CD burning device of second embodiment of the invention.Can know understanding technological means of the present invention for making those of ordinary skills, below explanation cooperates Fig. 2 to describe.

At first, in step 310, rotating speed determining unit 246 obtains data bit rate DBR from audio-visual scrambler 210 via bus 220, and adjusts CD speed signal DSS according to this.At this moment, servo-drive system 236 makes the CD principal axis motor rotation speed of optical memory system 200 have an initial value according to CD speed signal DSS.Next, in step 320, buffer area detecting unit 242 changes according to data volume in the buffer area 232 and data volume, and data BFD is detected in the output buffers district.Then, in step 330, flow detection unit 244 bases are to the detection of the data traffic of bus 220, output bus data bit rate IBR.

Then, in step 340, rotating speed determining unit 246 detects data BFD and bus data code check IBR according to buffer area, adjusts CD speed signal DSS.236 of servo-drive systems are adjusted the rotating speed of the CD Spindle Motor in the optical memory system 200 according to this CD speed signal DSS.Then, in step 350,, then finish if the CD burning program is finished.If CD burning do not finish, then repeating step 320 to step 340 till the CD burning action is finished.

Can clearer technological means of the present invention for making those of ordinary skills, following the 3rd embodiment is provided, and cooperates Fig. 2 to be described as follows.

Fig. 4 is the method for controlling number of revolution process flow diagram according to the CD burning device of third embodiment of the invention.At first, in step 410, the data bit rate DBR that rotating speed determining unit 246 is produced according to audio-visual scrambler 210 adjusts CD speed signal DSS, servo-drive system 236 then according to the CD speed signal DSS of this moment, makes the CD Spindle Motor of optical memory system 200 have an initial speed S _HOST, the rotating speed of Spindle Motor is with respect to the CD burning speed of optical memory system 200.The initial speed S of this Spindle Motor _HOSTTo make the CD burning speed of optical memory system 200 have an initial value.

Next, in step 420, rotating speed determining unit 246 detects data BFD and bus data code check IBR according to buffer area, adjusts CD speed signal DSS.According to this CD speed signal DSS, servo-drive system 236 obtains the new rotating speed S of Spindle Motor _NEW, this new rotating speed S _NEWDetecting buffer area data volume BUF, buffer area data volume changes delta BUF among the data BFD and the max cap. of buffer area and the relation of bus data code check IBR with buffer area in the present embodiment can represent in order to following formula.

S _NEW＝S+A*(S-S _IDE)+B*(BUF-0.5*BUF _MAX)+C*ΔBUF

The implication of each symbol is as follows in the following formula:

S _NEW: new rotating speed

S: current rotating speed

S _IDE: with respect to the tachometer value of bus data code check

BUF: the data volume of buffer area

Δ BUF: the data volume of buffer area changes

BUF _MAX: the max cap. of buffer area

Wherein, A, B, C are the weight of parameters, according to the correlation parameter of the sampling frequency of the sampling frequency of flow detection unit 244, buffer area capacity, buffer area detecting unit 242 and servo-drive system 236 and decide.Can adjust suitable parameter value according to different optical memory system 200.

Then, in step 430, judge the new rotating speed S of gained _NEWWhether in reasonable range, avoid rotating speed change amount excessive and influence etching/recording quality.In the present embodiment with initial speed S _HOSTAs standard, as new rotating speed S _NEWLess than initial speed S _HOST0.7 times the time, then in step 435, with new rotating speed S _NEWBe adjusted into initial speed S _HOST0.7 times.Then, significantly change suddenly, so change value that in the present embodiment will be each time is limited between 0.9 times to 1.1 times of current rotating speed S for avoiding CD burning speed.

In step 440, judge new rotating speed S _NEWWhether differ too much, if new rotating speed S with current rotating speed S _NEWGreater than 1.1 times of current rotating speed S, then in step 445, with new rotating speed S _NEWBe adjusted into 1.1 times of current rotating speed S.Then, in step 450, judge new rotating speed S _NEWWhether less than 0.9 times of current rotating speed S.If new rotating speed S _NEWLess than 0.9 times of current rotating speed S, then in step 455, with new rotating speed S _NEWBe adjusted into 0.9 times of current rotating speed S.

Wait to obtain a suitable new rotating speed S _NEWAfter, then in step 460, judge that whether the interior data volume BUF of buffer area 232 is greater than minimum data amount BUF _MIN, if not, then represent the data volume deficiency in the buffer area 232, then in step 465, enter buffer area data deficiencies handling procedure (for example for interrupting the CD burning action).If be judged as is then to enter in the step 470.Should illustrate that the order of above-mentioned each judgement can need to change according to the user.For example, the judgement of step 460 action can be placed on before the step 420, and the order of step 440 and step 450 also can change, and above-mentioned change does not influence effect of the present invention.

In step 470, servo-drive system 236 is set the new rotating speed S of Spindle Motor _NEWAnd the correlation parameter of servo-drive system 236, reach the purpose of the CD burning speed of adjusting optical memory system 200.Then, in step 480, if the CD burning action is not finished as yet, then repeating step 420 is to step 470.The data volume BUF in the real-time detection buffer area 232 and the data traffic of changes delta BUF and bus 220 thereof, the CD burning speed of adjustment optical memory system 200 is avoided interrupting because of the deficiency of the data volume in the buffer area 232 causes CD burning to move.

Comprehensively above-mentioned, the framework of comparison diagram 1 and Fig. 2, can obviously learn the difference of present embodiment and prior art, newly-increased revolution speed control device 240 in the optical memory system of present embodiment, have real-time detection and the function of adjusting CD burning speed, obviously different compared to fixedly CD etch-recording speed of the prior art.

In addition, the present invention adopts the mode of adjusting principal axis motor rotation speed, controls CD burning speed, avoids causing the CD burning action to interrupt because of the data volume in the buffer area is not enough.Simultaneously,, adjust CD burning speed in real time, reduce the chance that the CD burning action is interrupted, and then improve the CD burning quality of optical memory system by the data traffic of testbus and the data volume and the variation thereof of buffer area.

Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, thus protection scope of the present invention when with aforementioned claims the person of being defined be as the criterion.

Claims

1. A rotational speed control device for an optical disc recorder, which is suitable for adjusting the optical disc recording speed of an optical storage system with the optical disc recorder as the core. The system is characterized in that the rotational speed control device includes:

a buffer detection unit, coupled to the buffer, for detecting parameters of the buffer, and outputting detection data of the buffer; and

The rotational speed determination unit is coupled between the buffer detection unit and the servo system, and outputs a disc rotational speed signal according to the buffer detection data, and the servo system adjusts the optical disc of the optical storage system according to the disc rotational speed signal Burn speed.

2. The rotational speed control device of an optical disc recorder according to claim 1, wherein the optical storage system further comprises a bus for transmitting data to the buffer area, and the rotational speed control device further comprises:

The flow detection unit is coupled between the bus and the rotational speed determination unit, and is used to detect the speed of data transmission by the bus, and output the bus data code rate to the rotational speed determination unit, and the rotational speed determination unit is based on the bus data code rate, Adjusting and outputting the disc rotational speed signal to the servo system.

3. The rotational speed control device of an optical disc recorder according to claim 1 or 2, wherein the parameter of the buffer area is the amount of data in the buffer area, or the variation of the amount of data in the buffer area; The detection data of the buffer area includes: the amount of data in the buffer area, the amount of change in the amount of data in the buffer area, and the maximum capacity of the buffer area.

4. The rotational speed control device of an optical disc recorder according to claim 2, wherein the optical storage system further comprises an audio-visual encoder, coupled to the bus, for encoding audio-visual data, and according to an audio-visual encoding setting The setting sends a data transmission speed information to the bus.

5 . The rotational speed control device of an optical disc recorder according to claim 2 or 4 , wherein the interface through which the bus transmits the data code rate is an Advanced Technology Configuration Packet ATAPI interface. 6 .

6. A rotational speed control device for an optical disc recorder, which is suitable for adjusting the disc recording speed of an optical storage system with the optical disc recorder as the core. The optical storage system includes a disc recorder and a bus. The system is characterized in that the rotational speed control device includes:

A traffic detection unit, coupled to the bus, used to detect the speed at which the bus transmits data to the buffer, and output the bus data code rate; and

A rotational speed determination unit, coupled between the flow detection unit and the servo system, and outputs a disc rotational speed signal according to the bus data rate, and the servo system adjusts the optical disc recording speed of the optical storage system according to the disc rotational speed signal .

7. The rotational speed control device of an optical disc recorder according to claim 6, wherein the optical storage system further includes an audio-video encoder, coupled to the bus, for encoding audio-video data, and according to the video-audio encoding setting The setting sends a data transmission speed information to the bus.

8 . The rotational speed control device of an optical disc recorder according to claim 7 , wherein the interface through which the bus transmits the data code rate is an Advanced Technology Configuration Packet ATAPI interface. 9 .

9. A CD recording method for an optical storage system, the optical storage system includes a CD recording device, the CD recording device contains a buffer area and a servo system, it is characterized in that the CD recording method comprises the following steps:

(1) Detect the parameters of the buffer area, and output the detection data of a buffer area;

(2) Outputting a disc rotational speed signal according to the detected data in the buffer area;

(3) Adjusting the rotation speed of the optical disk spindle motor of the optical storage system according to the optical disk rotation speed signal.

10. The method according to claim 9, wherein the optical storage system further comprises a bus, coupled to the buffer area, for transmitting data to the buffer area for temporary storage,

In step (1), step (1A) is also included: detecting the speed at which the bus transmits data to the buffer area, and outputting a bus data code rate;

The step (2) also includes a step (2A): outputting a disc rotation speed signal according to the bus data code rate.

11. The method according to claim 9 or 10, wherein step (3) comprises: making the disc spindle motor obtain an initial rotational speed according to the optical disc rotational speed signal.

12. the method for claim 11, is characterized in that, step (3) also comprises:

3a. Calculate the new rotational speed of the disc spindle motor according to a set of parameters;

3b. Judging whether the calculated new rotational speed of the disc spindle motor is within a predetermined rotational speed range, if yes, proceed to step 3c; if not, correct the new rotational speed of the optical disc spindle motor to be within the predetermined rotational speed range;

3c, judging whether the amount of data in the buffer area exceeds the minimum amount of data in the buffer area, if not, enter a processing step of insufficient data in the buffer area; if so,

3d. Determining the new rotational speed of the disc spindle motor and setting servo parameters; and

3e. Determine whether the burning process is over, if not, go back to step 3a, and if yes, end burning the disc.

13. The method according to claim 12, wherein the group of parameters in step 3a includes: the current rotation speed of the optical disk spindle motor, the optical disk rotation speed signal relative to the data rate of the bus, the parameters of the buffer area, and the buffer The maximum capacity of the zone.

14. The method according to claim 12, wherein the predetermined rotational speed range in step 3b comprises:

1) greater than or equal to 0.7 times the initial rotational speed of the disc spindle motor;

2) Between 0.9 times the current speed and 1.1 times the current speed.

15. The method according to claim 9 or 10, wherein the parameters of the buffer include: the amount of data in the buffer, or the amount of change in the amount of data in the buffer; the detection data of the buffer Including: the amount of data in the cache, the amount of change in the amount of data in the cache, and the maximum capacity of the cache.

16. The method as claimed in claim 10, wherein the optical storage system further comprises an audio-visual encoder coupled to the bus, and before step (2A) further comprises the step of: transmitting according to an audio-visual encoding setting value A data transmission speed information is sent to the bus.

17. A CD recording method for an optical storage system, the optical storage system comprising a CD recording device and a bus, the CD recording device containing a buffer area and a servo system, characterized in that the CD recording method comprises the following steps:

(1) Detect the speed at which the bus transmits data to the buffer area, and output a bus data code rate;

(2) Outputting an optical disc rotational speed signal according to the data rate of the bus;

(3) Adjusting the disc writing speed of the optical storage system according to the disc rotation speed signal.

18. The method for recording an optical disc in an optical storage system according to claim 17, wherein the optical storage system further comprises an audio-video encoder coupled to the bus, and before the step (2), further comprises the step of: according to a The audio and video encoding setting transmits a data transmission speed information to the bus.

19. A speed control method for an optical disc recorder, which is suitable for adjusting the disc recording speed of an optical storage system with the optical disc recorder as the core, the optical storage system includes a disc recorder, and the optical disc recorder contains a buffer area and a servo system , characterized in that the speed control method includes the following steps:

(1) Detect the parameters of the buffer area, and output the detection data of the buffer area;

(2) Outputting a disc rotation speed signal according to the detected data in the buffer area; and

(3) The servo system adjusts the rotation speed of the optical disk spindle motor of the optical storage system according to the optical disk rotation speed signal.

20. The rotational speed control method of an optical disc recorder according to claim 19, wherein the optical storage system further comprises a bus, coupled to the buffer area, for transmitting data to the buffer area,

In step (1), step (1A) is also included: detecting the speed at which the bus transmits data, and outputting a bus data code rate;

The step (2) also includes a step (2A): adjusting the optical disc rotational speed signal according to the bus data code rate.

21. The speed control method of an optical disc recorder according to claim 19, 20, wherein the parameter of the buffer area is the amount of data in the buffer area, or the amount of change in the amount of data in the buffer area; The detection data of the buffer area includes: the amount of data in the buffer area, the amount of change in the amount of data in the buffer area, and the maximum capacity of the buffer area.

22. The method for controlling the rotational speed of an optical disc recorder according to claim 20, the optical storage system further comprising an audio-visual encoder coupled to the bus, characterized in that, before step (2A), a step is also included: according to an audio-visual The encoding setting transmits a data transmission speed information to the bus. .

23. A rotational speed control method for an optical disc recorder, suitable for adjusting the optical disc recording speed of an optical storage system with the optical disc recorder as the core, characterized in that the optical storage system includes an optical disc recorder and a bus, and the optical disc recorder Containing a buffer area and a servo system, the speed control method includes the following steps:

(1) According to the speed at which the bus transmits data to the buffer area, and output the bus data code rate;

(2) Outputting a disc rotational speed signal according to the data rate of the bus; and

24. The rotational speed control method of an optical disc recorder according to claim 23, wherein the optical storage system further comprises an audio-visual encoder coupled to the bus, and it is characterized in that, before step (2), it further comprises: according to the audio-visual The setting value of the encoder transmits a data transmission speed information to the bus.