CN101359483A

CN101359483A - Data storage system and method for rewritable memory media

Info

Publication number: CN101359483A
Application number: CNA2007100258297A
Authority: CN
Inventors: 陈启鸿; 彭钰娟; 廖皇翔
Original assignee: MINGJI TELECOM INFORMATION TECHNOLOGY Co Ltd
Current assignee: MINGJI TELECOM INFORMATION TECHNOLOGY Co Ltd
Priority date: 2007-08-04
Filing date: 2007-08-04
Publication date: 2009-02-04

Abstract

Optimum power is chosen according to write-in strategy and the optimum power that is chosen is adjusted according to the write-in times of the media that can be written in repeatedly so as to produce write-in power. Data is written into the media that can be written in repeatedly according to the write-in power.

Description

Can repeat to write the data-storage system and the method for medium

Technical field

The present invention relates to a kind of date storage method that repeats to write medium, particularly a kind of basis is write the method that indegree reduces Writing power in the time of can repeating to write the media data storage.

Background technology

Please refer to Fig. 1.Fig. 1 is the synoptic diagram of traditional CD-ROM drive 100.As shown in Figure 1, CD-ROM drive 100 comprises control module 150 and read/write head 130.After can repeating to write medium 110 and putting into CD-ROM drive 100, CD-ROM drive just can begin to carry out write activity.At first, read/write head 130 can read the data that can repeat to write medium 110 earlier, to judge the data class that can repeat to write medium 110.

Please refer to Fig. 2.Fig. 2 writes data 120 process flow diagram that can repeat to write medium 110 for traditional CD-ROM drive 100.Be described as follows:

Step 200: beginning;

Step 210: can repeat to write medium 110 and put into CD-ROM drive 100;

Step 220: read/write head 130 reads the data class that can repeat to write medium 110;

Step 230: control module 150 is selected the Writing power of read/write head 130 according to the data class that can repeat to write medium 110;

Step 240: read/write head 130 is with the Writing power of correspondence, data 120 write can repeat to write medium 110;

Step 250: finish.

Above-mentionedly data are write the flow process that can repeat to write medium for traditional CD-ROM drive.Its shortcoming for judge at control module 150 can repeat to write the data class of medium 110 after, just can select the Writing power corresponding with repeating to write medium 110, data 120 are write.For instance, if can repeat to write medium 110 for overriding (Override) CD, then Writing power is 10mW; If can repeat to write medium 110 for overriding digital versatile disc, then Writing power is 10nW.But because can repeat to write medium 110 has cumulative bad for writing indegree, for example rewritable discs is after read-write 10 secondary data and after overriding 100 secondary data, and the disc situation is different fully.And if to the rewritable discs of writing 10 secondary data and the rewritable discs of writing 100 secondary data, all use identical power, 10mW as described above, then described rewritable discs can be because reduce the life-span and indegree is write in minimizing like this, can override 1000 times as rewritable discs as described in originally, but because CD-ROM drive continues to write rewritable discs and to influence life-span of described rewritable discs with equal-wattage, therefore cause rewritable discs the number of times that can override in fact much smaller than 1000 times.

Summary of the invention

The invention provides and a kind of data are write the method that can repeat to write medium, comprise according to the described indegree of writing that repeats to write medium and adjust best power, and produce Writing power according to described best power; And, data are write the described medium that repeat to write according to said write power.

The present invention provides a kind of in addition data is write the system that can repeat to write medium, comprises control module, and described control module is adjusted best power according to the described indegree of writing that repeats to write medium, and produces Writing power according to described best power; And writing unit, according to said write power described data are write the described medium that repeat to write.

For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below will be described in detail below with preferred embodiment and in conjunction with appended accompanying drawing:

Description of drawings

Fig. 1 is the synoptic diagram of traditional CD-ROM drive.

Fig. 2 writes data the process flow diagram that can repeat to write medium for traditional CD-ROM drive.

Fig. 3 is according to CD-ROM drive synoptic diagram of the present invention

Fig. 4 writes data the process flow diagram that can repeat to write medium for CD-ROM drive according to the present invention.

Fig. 5 is a synoptic diagram of selecting write-in policy according to CD-ROM drive of the present invention.

Fig. 6 is for adjusting best power to produce the synoptic diagram of Writing power.

Fig. 7 is for adjusting the synoptic diagram of best power.

Embodiment

Please refer to Fig. 3.Fig. 3 is the synoptic diagram according to CD-ROM drive 300 of the present invention.As shown in the figure, CD-ROM drive 300 comprises control module 350 and read/write head 330.Override after disc 310 inserts CD-ROM drive 300 when repeating to write medium, CD-ROM drive 300 just can begin to carry out and writes flow process.The described disc that overrides can repeat to write medium 310 and be loaded with and writes indegree information 360, illustrates that overriding disc can repeat to write the number of times that medium 310 were once write.When CD-ROM drive 300 begins to carry out when writing flow process, control module 350 can override the kind that disc can repeat to write medium 310 by read/write head 330 judgements, and select write-in policy to obtain best power, the indegree information 360 of writing that reads according to read/write head 330 again, adjust described best power, to produce Writing power, according to said write power, read/write head 330 writes data 320 can repeat to write medium 310.Below will describe CD-ROM drive 300 in detail and data 320 be write the flow process that can repeat to write medium 310.

Please refer to Fig. 4.Fig. 4 is for CD-ROM drive 300 writes data 320 process flow diagram that can repeat to write medium 310 according to the present invention.Step is described as follows:

Step 400: beginning;

Step 405: control module 350 receive outside transmit write instruction, the said write instruction comprises start address and the end address that writes data and said write data, is connected to step 410;

Step 410: control module 350 judges according to the start address and the end address that write instruction whether the said write instruction continues last time write activity (continuing write); If, execution in step 440; If not, execution in step 415;

Step 415: control module 350 judges whether to repeat to write medium 310 and selected write-in policy (writing strategy) to select the action of best power described; If, execution in step 425; If not, execution in step 420;

Step 420: control module 350 is selected write-in policy and is selected best power, is connected to step 425;

Step 425: read/write head 330 judges to repeat to write whether the interval of start address and end address once was written on the medium 310; If be connected to step 426; If not, be connected to step 427;

Step 426: read and upgrade the indegree information 360 of writing; Be connected to step 430;

Step 427: said write number of times information 360 is set at default value 0; Be connected to step 430;

Step 430:, adjust selected best power to produce Writing power according to the indegree information 360 of writing that

step

426 or 427 is read; Be connected to step 435;

Step 435:, data 320 are write the described medium 310 that repeat to write with the Writing power that step 430 was produced; Be connected to step 445;

Step 440: according to last time writing fashionable selected Writing power, data 320 are write the described medium 310 that repeat to write, be connected to step 445;

Step 445: finish.

Please refer to Fig. 5.Fig. 5 is the synoptic diagram that CD-ROM drive 300 according to the present invention is selected write-in policy.Write-in policy comprises carries out Writing power and the test that writes quality.Can comprise and write fashionable level of flapping (jitter) and write quality.It is good more that the more little expression of level of flapping writes quality.As shown in the figure, transverse axis is represented Writing power, and the longitudinal axis is represented level of flapping.By can finding out among the figure, Writing power between C ' and B ', level of flapping minimum (expression writes best in quality).And the curve of curve formation the lowest point among the figure, A is the mid point of the lowest point B to C section, in general, writing system 300 selects write-in policies can choose power B ' as best power.Writing system 300 of the present invention is chosen the intersegmental power of B to A (meaning is that Writing power B ' is to A ') as Writing power promptly according to the indegree of writing that can repeat to write medium 310.

Please refer to Fig. 6.Fig. 6 is that description of step 430 is adjusted best power to produce the synoptic diagram of Writing power.Behind the selection best power, control module 350 just can reduce described best power according to the indegree information 360 of writing that read/write head 330 reads, as shown in the figure, if write indegree in 10 times, then do not reduce described best power, directly as Writing power data 320 are write and to repeat to write medium 310 with the best power of selecting.And if write indegree more than 10 times, for example writing indegree is 30, then reduces described best power to 85% of described script best power, can repeat to write medium 310 as Writing power data 320 are write.The rest may be inferred, and CD-ROM drive 300 meetings of the present invention are along with the increase of writing indegree, and Writing power is lower.

Please refer to Fig. 7.Fig. 7 is for adjusting the synoptic diagram of best power.As shown in the figure, best power is in fact non-to be constant power, but with the form of square wave.And the mode of reduction best power has two kinds of reduction amplitude (amplitude) and work periods (duty cycle).By finding out the big or small X in adjustable full employment cycle, also adjustable amplitude Y among the figure.This dual mode can carry out simultaneously, also can only select wherein a kind of mode.For example, if will reduce best power to 85%, then can X be adjusted into originally 85%, perhaps can be adjusted into Y originally 85%, perhaps can be adjusted into original 85% to the product of X and Y.

In addition, step 410 is judged and to be continued last time that the method for write activity last time write the end address of data for judging whether the start address that this time writes data continues.For example, if the first ED address that writes instruction is that 10, the second start addresses that write the data of instruction are 11, then second writes instruction and first write instruction for continuing.And if the first ED address that writes instruction is that 10, the second start addresses that write the data of instruction are 15, then second writes instruction and do not continue first and write instruction.Because generally when carrying out write activity, because data volume is too big, data can be divided into a plurality of, under this situation, only when first instructs, carry out the action of selecting Writing power, if after write continue last time the instruction that writes of instruction, the capital is according to selected Writing power for the first time, remaining data write can repeat to write medium, so just can quicken the carrying out of write activity.Therefore, write instruction for continuing the last time instruction of write activity, then directly to write data with Writing power last time if step 410 is judged.

The repeating of indication of the present invention writes medium 310 and can be rewritable discs (CD-RW) or override digital versatile disc (DVD-RW).

And write the Lead-In Area (Run-in area) and leading-out zone (Run-out area) that indegree information 360 can be stored in rewritable discs, perhaps be stored in the reserved area (RSV) that overrides digital versatile disc, or other rewritable discs with override the zone that is not used on the digital versatile disc.

To sum up state, the present invention can reduce the power that data are write according to the indegree of writing that can repeat to write on the medium, improves the life-span that can repeat to write medium with this, and increase can repeat to write the number of times that medium can write.

The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.

Claims

1, a kind of date storage method that repeats to write medium comprises:

Reception writes instruction, and the said write instruction contains start address, end address and data;

Read and write indegree;

According to the said write number of times, the decision Writing power; And

According to said write power described data are write the described medium that repeat to write.

Whether 2, method according to claim 1 more comprises the interval of judging described start address and described end address and once was written into.

3, method according to claim 2, wherein, the interval of described start address and described end address was not written into, and then setting predetermined value is the said write number of times; If the interval of described start address and described end address once was written into, then upgrade the said write number of times.

4, method according to claim 1 wherein after described reception writes the step of instruction, more comprises and judges whether the said write instruction continues the last time instruction of write activity; Wherein, if said write instruction is to continue the last time instruction of write activity, then carry out writing of these described data to carry out last time the Writing power of write activity.

5, method according to claim 1 wherein comprises and selects write-in policy to obtain best power.

6, method according to claim 5 wherein according to the said write number of times, is adjusted the amplitude of described best power, with decision said write power.

7, method according to claim 5 wherein according to the said write number of times, is adjusted the work period of described best power, with decision said write power.

8, method according to claim 1, wherein said repeat to write medium to write indegree many more, then said write power is low more.

9, a kind of data-storage system that repeats to write medium comprises:

Reading device is used for reading the described indegree of writing that repeats to write medium;

Control device is according to said write number of times decision Writing power and renewal said write number of times; And

Writing station writes the described medium that repeat to write according to said write power with described data and said write number of times.

10, system according to claim 9, whether described control device more comprises judges and describedly repeats to write medium and once be written into.

11, system according to claim 10, wherein, if describedly repeat to write medium and be not written into, then setting predetermined value is the said write number of times; If describedly repeat to write medium and once be written into, then upgrade the said write number of times.

12, data-storage system according to claim 9, described control device can be used to receive and write instruction.

13, data-storage system according to claim 12, wherein said control device instructs according to said write judges whether the said write instruction is the last time instruction of write activity that continues, wherein, if the said write instruction is for to continue the last time instruction of write activity, then the Writing power of write activity writes this described data to carry out last time.

14, data-storage system according to claim 9, wherein said control device more comprise selects optimal write strategy to obtain best power.

15, data-storage system according to claim 14 wherein according to the said write number of times, is adjusted the amplitude of described best power, with decision said write power.

16, data-storage system according to claim 14 wherein according to the said write number of times, is adjusted the work period of described best power, with decision said write power.

17, data-storage system according to claim 9, wherein said repeat to write medium to write indegree many more, then said write power is low more.