CN100401387C - Compact disk playing device and its playing method - Google Patents
Compact disk playing device and its playing method Download PDFInfo
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- CN100401387C CN100401387C CNB2005100289898A CN200510028989A CN100401387C CN 100401387 C CN100401387 C CN 100401387C CN B2005100289898 A CNB2005100289898 A CN B2005100289898A CN 200510028989 A CN200510028989 A CN 200510028989A CN 100401387 C CN100401387 C CN 100401387C
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- impact damper
- stored
- disk player
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Abstract
The invention relates to a disc player and relative playing method, wherein said method comprises that 1, decoding and storing the data of disc into buffer; 2, comparing stored data of buffer with input standard value 1; 3, when data of buffer is higher than standard value 1, reducing the playing speed. The invention can effectively play data and extract data quickly.
Description
Technical field
The invention relates to the technology that CD drive is play, especially about a kind of disk player and the method thereof that can more stably play data of optical disk.
Background technology
As the medium that are used for digital-information recording, compact disk (Compact Disk; Hereinafter to be referred as CD) series, or digital multi-purpose CD (Digital Versatile Disk; Hereinafter referred to as " DVD ") CD of series etc. popularizes, and requiring the more record/broadcasting speed of high power speed with the record/play-back device of last identical optical disc recording medium, so that bulk information that can record/broadcast message class apparent movement image.
Thus, be 48 times of speed, 52 times of speed when recently the broadcasting speed of disk player is the situation of CD, and when DVD, the trend of 16 times of speed of broadcasting speed increase arranged.
So increase and play doubly speed,, data stability is descended, in addition, use CD because the factors of instability such as scratch can appear at optical disc surface in influence of various factors though can transmit data fast.
If do not consider these factors, speed unconditionally is promoted to maximum doubly speed with playing doubly, and stability must descend, and (retry) step also can occur repeatedly trying simultaneously again.
If this thing happens, it is interrupted picture to occur during broadcast, and the situation of mosaic (mosaic) perhaps takes place because of the mistiming, and may cause when the poorest window to stop because of time delay, destroys total system.
Summary of the invention
Thus, in order to solve top existing problem, disk player provided by the present invention and method thereof are according to the state of playing to purpose of the present invention exactly, and the broadcast of regulating driver is doubly fast, thus more stable reading of data.
To achieve these goals, the player method according to disk player of the present invention comprises the steps: first step: the data decode that CD is included is stored to impact damper; Second step: the data volume that will be stored in the impact damper is compared with first standard figures of setting input, and this first standard figures is used for differentiating ' broadcast ' or ' extraction ' broadcast state; Third step: comparative result, the data volume in being stored in impact damper reduce the doubly speed of playing during greater than first standard figures; When the data volume in being stored in impact damper is bigger than first standard figures, also comprise the steps: at first, increase the depreciation counting; Then, the depreciation counting that increases is compared with second standard figures of setting input, if the depreciation that increases counting is bigger than standard figures, reduce the doubly speed of playing, this second standard figures is used to guarantee to play the doubly degree of belief of speed conversion.
Described first standard figures is set at less than buffer capacity.
Above said standard figures more satisfactory be half of buffer capacity.
Above said second standard figures be to allow doubly speed conversion, the continuous play command number that the developer selects.
Above said comparative result, if it is littler than first standard figures to be stored in the data of impact damper, sets and play doubly speed and operate operation for maximum.
Above said comparative result, if it is little to be stored in the numerical value and first standard figures of impact damper, comprise the steps: at first to increase the counting (up count) that appreciates, the appreciation counting that will increase is then compared with second standard figures of setting input, here the result who compares, if the appreciation that increases counting is bigger than second standard figures, will plays times speed and be set at maximum and move.
Top comparative result, the data volume in being stored in impact damper and first standard figures are little, increase the doubly speed of playing.
Comprise as lower device according to disk player of the present invention its formation:, the data on the CD are carried out the impact damper of decode stored for receiving the play command that transmits from main frame and playing the data of including the CD; Compare with the standard figures of setting input being stored in the data volume of impact damper, differentiate the broadcast state discriminating gear of broadcast state, described broadcast state discriminating gear comprises as lower member: the 1st comparer, the data volume that is stored in impact damper is compared with first standard figures of setting input, and generating the lifting/lowering counting increases signal; The lifting/lowering counter, the lifting/lowering counting that receives input increases signal, according to signal increase lifting/lowering count signal separately; The 2nd comparer is compared lifting/lowering count signal that increases and second standard figures of having set input, generates to play doubly speed maximum/minimizing signal.
Effect of the present invention:
Have following effect according to disk player of the present invention and player method thereof:
At first, just can judge differentiation ' broadcast ' and ' extraction ', when playing, use low power speed, when extraction, come action command, played data more stably, also extracted data quickly with high power speed by buffering capacity.
Secondly, when the present invention plays the bad CD of playability, can reach the effect of stablizing data playback.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the inside formation piece figure according to disk player of the present invention;
Fig. 2 is the process flow diagram according to optical disc playing method of the present invention;
Fig. 3 is the pie graph according to disk player internal buffer of the present invention;
Fig. 4 is the inside formation piece figure according to the inner broadcast state discriminating gear of disk player of the present invention;
Fig. 5 to Fig. 6 plays the buffering capacity synoptic diagram according to the time when extracting out for illustrating according to optical disc playing method of the present invention.
The symbol description of major part in the accompanying drawing:
100: disk player 110: light picker
120:R/F amplifier 130:DSP
140: impact damper 150: the broadcast state discriminating gear
160: microcomputer 170: servomechanism installation
180: driver 190a: sliding motor
190b: spindle motor
Embodiment
Formation and effect to the embodiment of disk player of the present invention and method thereof is elaborated below with reference to accompanying drawings.
Fig. 1 is the formation piece figure according to disk player of the present invention.
Same as shown in Figure 1, see from big aspect that according to optical disc playing device 100 of the present invention formation comprises as lower device: inject laser to optical disc surface, and receive the light picker 110 of reflected signal; The RF amplifier 120 that the signal that light picker 110 is received carries out amplification, regularization; To passing through the signal digitalized of RF amplifier 120, carry out digital signal processing (DSP:digital signal processor) device 130 (hereinafter to be referred as the DSP devices) of digital signal processing; The data buffer of handling in the storage DSP device 130 140; Compare with the standard figures of setting input by the data volume that is stored in impact damper 140, differentiate the broadcast state discriminating gear 150 of broadcast state; Slip (sled) the motor 190a that light picker 110 is moved by radially (radial) direction of CD; Drive the spindle motor 190b of CD rotation; And the driver 180 that drives top said slip (sled) motor 190a and spindle motor 190b; The servomechanism (servo) 170 that Control Driver 180 drives; And the microcomputer 160 that the inscapes in the disk player 100 are controlled.Externally also have in addition to receive and transmit the main frame 200 that is used to control and handle disk player 100 data,
Constitute identical disk player of the present invention 100 therewith and read CD, transmit the step of data, be illustrated with reference to the optical disc playing method of the present invention of Fig. 2 to main frame 200.
Before explanation, of the present invention dvd playback order and the needs shown according to Fig. 2 describe with reference to Fig. 3 to Fig. 6.
At first,, judge corresponding CD (CD/DVD/R/RW), read optical disc information by CD, and it is stored to impact damper, be in holding state afterwards if CD is positioned over disk player 100.
S10, S20 in the said holding state, receive the relevant order of broadcast from main frame 200 in the above, and the broadcast times speed that improves disk player 100 is extremely maximum doubly fast, detects corresponding field, if not unusually, begin to carry out data decode.
At this moment, the decoding of data is meant, 0 and 1 the digital byte information that is recorded in CD is come process of reading by top said pick-up 110, RF amplifier 120 and DSP device 130.
For carrying out this operation, above said microcomputer 160 by servomechanism 170 and driver 180, driving shaft motor 190b is rotated CD.At this moment, above 160 approvals and spindle motor 190B correspondent voltage of said microcomputer so that disk player 100 is in doubly speed of maximum broadcast.
S30 afterwards, judges whether decoding normally finishes this step through specified data.
S50, if data decode finishes smoothly, with data storage to impact damper 140, and with the storage data be sent to main frame 200.
S40, at this moment, if data decode does not have normal termination, the method for being familiar with by operating personnel is carried out NG and is handled and can finish.
Above the basic structure and the management method of impact damper of said data storage same as shown in Figure 3.
Same as shown in Figure 3, impact damper 140 can be divided into parameter region and buffering zone from big aspect.
Here said parameter region is storage and TOC (table of contents), CD or the relevant data of Driver Information such as inquiry, identify, and top said buffer area be have sequentially, circularly (promptly 0,1,2,3, N, 0,1,2,3) the actual data area of finishing of storage from the CD decoding.
Utilize the impact damper 140 of this structure, to data decoding and buffering, and the transport process of data is described as follows.
If at first finish data decode, with data storage to the buffer area 0, because have data in the impact damper 140, so beginning is to the transmission of main frame 200.
This therebetween, if the decoding of following data is finished, data will be stored to top said buffer area 1.
Continue to be stored to buffer area N by this kind mode, or also have a bit vacant, that just stopped decoding before the N of buffer area.
So far, the data of main frame 200 transmit and continue to confirm whether to be the data that impact damper 140 requires, and transmit repeatedly.
Identical therewith, to the operation that cushions of data of decoding, and the main frame transfer operation of buffered data is finished individually.
That is, before the irrelevant interruption of transfer operation, carry out data decode and buffering,, transmit and just begin if there are the data that can transmit to impact damper 140.
S70,80 on the other hand, transmits after above-mentioned steps S50 finishes in the data of initial main frame 200, and is identical therewith if send the broadcast related command continuously from main frame 200, and data are decoded, and judges whether the data of decoding are normal.At this moment, if data decode does not have normal termination, flow process enters above-mentioned S40, and the method for being familiar with by operating personnel is carried out NG and handled and can finish.
S90, if data decode finishes smoothly, afterwards, according to words of the present invention, in broadcast state discriminating gear 150, the standard figures that relatively is stored in the data volume in the impact damper 140 and has set input compares with reference to Fig. 4.
Fig. 4 is the inside formation piece figure according to broadcast state discriminating gear of the present invention.
Same as shown in Figure 4, comprise as lower device according to broadcast state discriminating gear 150 its formations of the present invention: the standard figures that relatively is stored in the data volume (buffering capacity) in the impact damper 140 and has set input is according to (standard figures) 1, and generation rises or fall the 1st comparer 151 of count signal; Receive the lifting/lowering count signal that the 1st comparer 151 generates, and increase the lifting/lowering counter 153 of counting according to signal separately; The count signal of said increase and set second standard figures of input relatively generates the 2nd comparer 155 of playing the maximum or minimizing signal of speed doubly.
Identical therewith formation can be differentiated the state of playing according to the amount that is stored in data in the impact damper 140.
For this reason, according in the disk player 100 of the present invention, top broadcast state is divided into two kinds.
One of them, main frame is that purpose requires data conditions with the broadcast as media player or power DVD, is defined as ' broadcast ' in the present invention.
Another backs up to hard disk with CD or dvd content exactly, carries out test procedure continuously and comes the requirement data conditions, is defined as ' extraction ' in the present invention.
That is, big being divided into of broadcast state of disk player 100 play and two kinds of states of extraction, this differentiation is not limited in the embodiments of the invention.
Above said ' broadcast ' situation, occur to interrupt for preventing picture, and obtain stable data, more satisfactory is the operation of low power speed.Main frame 200 is slowly issued orders, and with top said identical, in the middle of ordering, continues to finish decoding and buffering, thus in impact damper, also leave a lot of data, even low power speed can stably obtain data to playing also not influence.
Above the situation of said ' extraction ', for obtaining data faster, more satisfactory is that times speed is adjusted to maximum doubly speed.
As a result, if judge that the pattern that main frame 200 requires is ' broadcast ' or ' extraction ', will select this favourable times speed is come operational light disk broadcasting device 100.
For this reason, identical with the above, as standard, differentiation is ' broadcast ' or ' extraction ' pattern with the data that are stored in impact damper 140.
Promptly, above issue orders apace for obtaining data sooner in said ' extraction ', so the data of buffering transmit at once, in impact damper 140, have probably no and stay data, in ' broadcast ' since between main frame 200 order time long, buffering continues during this period, so also leave data in impact damper.
The buffering capacity of time during according to ' extraction ' is with reference to Fig. 5, and the buffering capacity of the time during to broadcast is then with reference to Fig. 6.
Same as shown in Figure 5, during extraction because the interval between order is very short, so in the impact damper 140 time of storage data also short, data have probably no and stay.
Same as shown in Figure 6, because the interval between order is long, buffering also continues to finish during this, so also leave data in impact damper 140 during broadcast.
Thus, above said first standard figures for differentiating ' broadcast ' or ' extraction ' broadcast state, first standard figures is set at less than buffer capacity.In embodiments of the present invention, first standard figures is set at half of buffer capacity.
S100, promptly, above-mentioned steps S90 is in said in the above the 1st comparer 151, relatively be stored in the data volume and first standard figures in the impact damper 140, if the data volume (buffering capacity) that is stored in the impact damper 140 is bigger than first standard figures, be judged as ' broadcast ' state, sending the depreciation counting increases signal.
Increase in the up-down counter 153 of signal at the depreciation that receives input, increase the depreciation counting, that is, down counter zero clearing (clear) only increases the depreciation counting.
S110, the depreciation counting that increases above is to compare with second standard figures in the 2nd comparer 155, above said second standard figures shows is to be the doubly continuous play command number of speed conversion of permission, be to be to guarantee to play the number that the degree of belief of doubly speed conversion is set.
S120, that is, and when play command is sent, buffering capacity is bigger than first standard figures, and the depreciation of increase is counted the number of times that is above standard, and just it is judged as ' broadcast ' state, play doubly speed by reducing, guarantee the operational reliability and stability of overall optical disk broadcasting device 100.
S130, on the other hand, in step S90, in the 1st comparer 151, relatively be stored in the data volume (buffering capacity) and first standard figures in the impact damper 140, if it is littler than first standard figures to be stored in the data volume (buffering capacity) of impact damper 140, differentiating is ' extraction ' state, and sending the counting that appreciates increases signal.
The appreciation counting that receives input increases in the up-down counter 153 of signal, increases the counting that appreciates, that is, the down counter zero clearing only increases the counting that appreciates.
S140, above the appreciation count signal of said increase in the 2nd comparer 155, compare with second standard figures.
S150 if the counting that appreciates is bigger than second standard figures, will plays times speed and be adjusted to maximum.
At this moment, play doubly speed and play a state that reduces times speed, can only increase certain size according to developer's selection from maximum.
Above the doubly change of speed of said broadcast, receive doubly microcomputer 160 Control Driver 180 of speed maximum/minimizing signal of the broadcast that generates in the broadcast state discriminating gear 150, approve corresponding driving voltage once more, once more the rotational speed of regulating shaft motor.
S60 afterwards, in the state of playing doubly fast maximum or reducing, finishes the data transfer step S50 from main frame 200, and as transmitting all data that main frame requires, that data transfer procedure also finishes.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (11)
1. the player method of a disk player is characterized in that comprising the steps:
First step: the data decode that CD is included is stored to impact damper;
Second step: the data volume that will be stored in the impact damper is compared with first standard figures of setting input, and this first standard figures is used for differentiating ' broadcast ' or ' extraction ' broadcast state;
Third step: comparative result, the data volume in being stored in impact damper reduce the doubly speed of playing during greater than first standard figures; When the data volume in being stored in impact damper is bigger than first standard figures, also comprise the steps: at first, increase the depreciation counting; Then, the depreciation counting that increases is compared with second standard figures of setting input, if the depreciation that increases counting is bigger than second standard figures, reduce the doubly speed of playing, this second standard figures is used to guarantee to play the doubly degree of belief of speed conversion.
2. the player method of disk player according to claim 1 is characterized in that:
Described first standard figures is set at less than buffer capacity.
3. the player method of disk player according to claim 1 is characterized in that:
Described first standard figures is half of buffer capacity.
4. the player method of disk player according to claim 1 is characterized in that:
Described second standard figures is for allowing doubly speed conversion, the continuous play command number that the developer selects.
5. the player method of disk player according to claim 1 is characterized in that:
Comparative result in the described third step if it is littler than first standard figures to be stored in the data volume of impact damper, is set and is play doubly speed and operate operation for maximum.
6. as the player method of disk player as described in the claim 5, it is characterized in that:
Described comparative result if it is littler than first standard figures to be stored in the data volume of impact damper, comprises the steps:
The counting that at first increase to appreciate, the appreciation that will increase then counting is compared with second standard figures of setting input, and the result who compares here is bigger than second standard figures if the appreciation of increase is counted, and will play times speed and be set at maximum and move.
7. the player method of disk player according to claim 1 is characterized in that:
Comparative result in the described third step, the data volume in being stored in impact damper is littler than first standard figures, increases the doubly speed of playing.
8. disk player is characterized in that comprising as lower member:
For receiving the play command that transmits from main frame and playing the data of including the CD, the data on the CD are carried out the impact damper of decode stored;
Compare with first standard figures of setting input being stored in the data volume of impact damper, differentiate the broadcast state discriminating gear of broadcast state,
Described broadcast state discriminating gear comprises as lower member:
The 1st comparer is compared the data volume that is stored in impact damper with first standard figures of setting input, generating the lifting/lowering counting increases signal;
The lifting/lowering counter, the lifting/lowering counting that receives input increases signal, according to signal increase lifting/lowering count signal separately;
The 2nd comparer is compared lifting/lowering count signal that increases and second standard figures of having set input, generates to play doubly speed maximum/minimizing signal.
9. disk player as claimed in claim 8 is characterized in that:
Described first standard figures is set at less than buffer capacity.
10. disk player as claimed in claim 8 is characterized in that:
Described first standard figures is half of buffer capacity.
11. disk player as claimed in claim 8 is characterized in that:
Described second standard figures is to be the doubly fast continuous play command number of changing of permission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100289898A CN100401387C (en) | 2005-08-22 | 2005-08-22 | Compact disk playing device and its playing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100289898A CN100401387C (en) | 2005-08-22 | 2005-08-22 | Compact disk playing device and its playing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1920968A CN1920968A (en) | 2007-02-28 |
| CN100401387C true CN100401387C (en) | 2008-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100289898A Expired - Fee Related CN100401387C (en) | 2005-08-22 | 2005-08-22 | Compact disk playing device and its playing method |
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| Country | Link |
|---|---|
| CN (1) | CN100401387C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259727A (en) * | 1999-01-07 | 2000-07-12 | 船井电机株式会社 | CD disc driving device having function for preventing disc from being eccentric and wobble |
| EP1049086A1 (en) * | 1999-03-30 | 2000-11-02 | Lg Electronics Inc. | Apparatus and method for controlling reproduction speed of an optical disk |
| CN1284717A (en) * | 1999-06-29 | 2001-02-21 | Lg电子株式会社 | Method for controlling playback speed of optical disk |
| CN1308329A (en) * | 1999-11-30 | 2001-08-15 | 索尼公司 | Copying equipment and method |
| JP2004241060A (en) * | 2003-02-07 | 2004-08-26 | Hitachi-Lg Data Storage Inc | Optical disk device, and method for controlling the number of times of read retries |
-
2005
- 2005-08-22 CN CNB2005100289898A patent/CN100401387C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259727A (en) * | 1999-01-07 | 2000-07-12 | 船井电机株式会社 | CD disc driving device having function for preventing disc from being eccentric and wobble |
| EP1049086A1 (en) * | 1999-03-30 | 2000-11-02 | Lg Electronics Inc. | Apparatus and method for controlling reproduction speed of an optical disk |
| CN1284717A (en) * | 1999-06-29 | 2001-02-21 | Lg电子株式会社 | Method for controlling playback speed of optical disk |
| CN1308329A (en) * | 1999-11-30 | 2001-08-15 | 索尼公司 | Copying equipment and method |
| JP2004241060A (en) * | 2003-02-07 | 2004-08-26 | Hitachi-Lg Data Storage Inc | Optical disk device, and method for controlling the number of times of read retries |
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| Publication number | Publication date |
|---|---|
| CN1920968A (en) | 2007-02-28 |
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