CN100536004C - Control chip of optical disc apparatus with pre-moving instruction function and its transmission method - Google Patents
Control chip of optical disc apparatus with pre-moving instruction function and its transmission method Download PDFInfo
- Publication number
- CN100536004C CN100536004C CNB2004100286081A CN200410028608A CN100536004C CN 100536004 C CN100536004 C CN 100536004C CN B2004100286081 A CNB2004100286081 A CN B2004100286081A CN 200410028608 A CN200410028608 A CN 200410028608A CN 100536004 C CN100536004 C CN 100536004C
- Authority
- CN
- China
- Prior art keywords
- mpeg
- module
- decoder module
- data
- rom device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000003287 optical effect Effects 0.000 title claims description 15
- 230000005540 biological transmission Effects 0.000 title 1
- 238000012790 confirmation Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims description 17
- 230000006870 function Effects 0.000 abstract 1
- 238000013459 approach Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Abstract
The invention is a disk driver control wafer with the beforehand transmitting instructions function and the transmitting method, it includes a MPEG model transmits a command information to a decoder model, the decoder model receives the command information and read a data and stores it into a memory for being used by the MPEG model, when the data is stored in the memory, the decoder model transmits a confirming signal to the MPEG model. The MPEG model does not receives the confirmation signal, and transmits the next command information to the decoder model, the MPEG model reads the data stored in the memory.
Description
[technical field]
The invention relates to a kind of CD-ROM device control wafer and transfer approach thereof, and particularly transmit a plurality of the instruction to the CD-ROM device control wafer and the transfer approach thereof of demoder relevant for a kind of with move instruction function in advance.
[background technology]
In the field of image compression, mpeg standard is one of the most general standard.In mpeg standard, MPEG 2 standards can provide the image of high image quality, are present popular on the market movie modes.Because it is quite big to meet the film data amount of MPEG 2 standards, therefore need the Storage Media of high power capacity to store, for example the DVD laser disc.
Laser discs such as DVD playing back need be controlled a servo motor and optical read head be moved to laser disc trams such as DVD, and the data of correctly reading laser discs such as DVD are for use.In addition, the data of being read by laser discs such as DVD are also wanted and can be decoded according to a MPEG 2 standards rapidly and efficiently.Make MPEG 2 films to play smoothly, and the phenomenon that does not have square or picture to postpone.
Because the operand of MPEG 2 decoding standards is huge, if carry out MPEG 2 decodings, be subject to the speed of CPU (central processing unit) (CPU) with software, picture may have the phenomenon of square or delay.If carry out with hardware, MPEG 2 decodings need be done efficient collocation with the decoding of DVD laser disc and the control of servomechanism.Therefore, how to design a hardware drive servo motor, to the laser disc data decode and carry out mpeg decode, and utilize the efficient DVD playing back laser disc of advantage of SoC (SOC), be that industry member is in demand.
Fig. 1 illustrates the calcspar of a CD-ROM device control circuit.Please refer to Fig. 1, CD-ROM device control circuit 100 comprises one first central processing unit 102, one second central processing unit 104, a mpeg module 106 and a decoder module 108.Decoder module 108 comprises a servo controller 110, and servo controller 110 control one servo motors (not shown), servo motor drive CD-RW discsCD-RW makes optical read head can read data on the CD-RW discsCD-RW in position, and this CD-RW discsCD-RW is a DVD laser disc for example.Second central processing unit, 104 control decoder module 108.
Mpeg module 106 is obtained the data of being read by laser disc, decodes for broadcast according to a mpeg standard, and this mpeg standard is a MPEG 2 standards for example.First central processing unit, 102 control mpeg modules 106 have an IDE (Integrated Drive Electronics) interface 114 between mpeg module 106 and decoder module 108.Therefore, mpeg module 106 and decoder module 108 between all signal communicating must be through IDE interface 114.
Fig. 3 illustrates ATAPI (AT Attachment Packet Interface) command sequence (command sequence) figure of the circuit framework that cooperates Fig. 1.Please refer to Fig. 3, mpeg module 106 sends ATAPI order 304 via ATAPI interface 302 and gives decoder module 108, and wherein ATAPI interface 302 is a kind of form of the IDE interface 114 described in Fig. 1.Decoder module 108 receives ATAPI order 304 back control optical read heads laser disc is read data to be stored in a storer 112 (as shown in Figure 1).This data storing is after storer 112, and decoder module 108 is sent a confirmation signal 306, and (Acknowledgement ACK), via ATAPI interface 302, is converted to ATA ISR signal 308 with notice mpeg module 106.
Then, decoder module 108 updating device states are also prepared data (update device andprepare data), and send a update mode signal 310 (up date device signal) and give ATAPI interface 302.Before sending next ATAPI order 312, mpeg module 106 sends a reading device status signal (read device status) 314 earlier and has been ready to receive ATAPI order 312 to determine decoder module 108.Next, mpeg module 106 sends ATAPI order 312.Then, mpeg module 106 repeats the identical agreement (handshaking) of shaking hands with decoder module 108, reads the data on the laser disc in regular turn and decodes with mpeg standard.
As mentioned above, in Fig. 3, because the agreement (handshaking) of shaking hands of mpeg module 106 and decoder module 108 is all by ATAPI interface 302, mpeg module 106 will determine to receive that the affirmation signal 306 that decoder module 108 is sent just can send next ATAPI order 312 afterwards.Decoder module 108 receives that could control servo motor after the ATAPI order 304 or 312 is positioned to the tram with reading of data with optical read head.If the position that data are arranged in laser disc is discontinuous, optical read head moves to the tram can expend many times.That is with respect to the time with data read on the laser disc and do decoding (for example doing data error-detecting and answer), the mobile optical read head is long on the contrary to the time of appropriate location.When CD-ROM device speed was fast inadequately, mpeg module 106 may be obtained the data that need immediately, made mpeg module 106 decoding backs produce pictures and the phenomenon that square or picture postpone occurred.
[summary of the invention]
The present invention proposes the method for a kind of CD-ROM device control wafer move instruction in advance, comprises the following steps: at least at first, and a mpeg module transmits a command information and gives a decoder module.Then, decoder module receives and a laser disc is read data after this command information and take for mpeg module to be stored in a storer.Then, when data storing behind storer, decoder module transmits a confirmation signal and gives mpeg module.Then, needless to say receive this confirmation signal, mpeg module according to a speed directly row send Next Command information and give this decoder module.Mpeg module is taken the data and foundation one mpeg standard that are stored in storer and is decoded for broadcast.
The present invention also proposes a kind of CD-ROM device control circuit, and this CD-ROM device control circuit comprises a decoder module, a mpeg module and a CPU (central processing unit) at least.This decoder module receives a plurality of command informations.Wherein after decoder module received a command information, decoder module read data to be stored in a storer.When data storing behind this storer, decoder module is sent a confirmation signal.
Mpeg module needless to say the confirmation of receipt signal just footpath row send a plurality of command informations, mpeg module is taken the data that are stored in storer, CPU (central processing unit) is used for control and coordinates decoder module and mpeg module.
[description of drawings]
For above-mentioned and other purposes of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Fig. 1 illustrates the calcspar of the CD-ROM device control circuit of prior art;
Fig. 2 illustrates the calcspar of a preferred embodiment of CD-ROM device control circuit of the present invention;
Fig. 3 illustrates the ATAPI command sequence figure of prior art;
Fig. 4 illustrates ATAPI command sequence figure of the present invention; And
Fig. 5 illustrates the synoptic diagram of the sequential chart of decoder module running.
[embodiment]
Fig. 2 illustrate CD-ROM device control circuit of the present invention a preferred embodiment calcspar.Please refer to Fig. 2, CD-ROM device control circuit 200 comprises a CPU (central processing unit) 202, a mpeg module 204 and a decoder module 206.Decoder module 206 comprises a storer 208 and a servo controller 210.Servo controller 210 control one servo motors (not shown), servo motor drive CD-RW discsCD-RW makes optical read head can read data on the CD-RW discsCD-RW in position.Compared to the CD-ROM device control circuit 100 of Fig. 1, CD-ROM device control circuit 200 does not need IDE interface 114.Except that this, one one CPU (central processing unit) 202 of 200 needs of CD-ROM device control circuit, and CD-ROM device control circuit 100 needs two CPU (central processing unit) (102 and 104).
Fig. 4 illustrates ATAPI (AT Attachment Packet Interface) command sequence (command sequence) figure of the circuit framework that cooperates Fig. 2.One preferred embodiment of the method for broadcast laser disc of the present invention is described in detail in detail in Fig. 4.Please refer to Fig. 4 and Fig. 2, at first, mpeg module 204 decisions transmit the speed that a plurality of ATAPI command informations are given a decoder module 206.Then, mpeg module 204 sends an ATAPI command information (command message) 402 and gives decoder module 206.Decoder module 206 receives to be controlled optical read head after the ATAPI command informations 402 and laser disc (a for example DVD laser disc) is read data takes for mpeg modules 204 to be stored in storer 208.
When this data storing after storer 208, decoder module 206 transmits a confirmation signal 404 and gives mpeg module 204.When mpeg module 204 not during confirmation of receipt signal 404, mpeg module is in a non-affirmation state.
When this non-affirmation state, mpeg module 204 footpath row send ATAPI command information 406 according to above-mentioned speed and give decoder module 206.That is mpeg module 204 is not waited for that confirmation of receipt signal 404 is promptly decided in its sole discretion and is sent ATAPI command information 406.Compare with the command sequence of Fig. 3, the command sequence of Fig. 4 need not passed through ATAPI interface 302, so mpeg module 204 need not waited for that confirmation of receipt signal 404 can be decided in its sole discretion and send ATAPI command information 406.After decoder module 206 received ATAPI command information 406, decoder module 206 was carried out that laser disc is read the next record data and is taken for mpeg module to be stored in storer 208.Treat this data storing after storer 208, decoder module 206 is sent confirmation signal 408 and is given mpeg module 204.Mpeg module is taken the data and foundation one mpeg standard that are stored in storer 208 and is decoded for broadcast, and this mpeg standard is a MPEG 2 standards for example.
Because the time that ATAPI command information 406 is sent is early than the time of mpeg module 204 confirmation of receipt signals 404, decoder module 206 can receive ATAPI command information 406 ahead of time to begin that optical read/write head is moved to the tram.So, can save the time that decoder module 206 is waited for ATAPI command information 406, also can not produce the phenomenon that square or picture delay appear in picture simultaneously.
Above-mentioned decision transmits the deciding means that a plurality of ATAPI command informations are given the speed of a decoder module 206, for example, the capacity of mpeg module 204 calculated in advance storeies 208, cooperate optical read head to move to the speed of tram, cooperate mpeg module 204 to take the demand speed of data again, just can learn the speed that transmits a plurality of ATAPI command informations.So, can prior notice optical read head move to the tram, and in advance with deposit data to storer 208.Above-mentioned in advance deposit data to the process of storer 208 being placed (pre-fetch) function in advance.
In Fig. 2, CPU (central processing unit) 202 is used to control and coordinate the running of mpeg module 204 and decoder module 206.Compared to Figure 1, in Fig. 1, first CPU (central processing unit) 102 and second CPU (central processing unit) 104 are controlled mpeg module 106 and decoder module 108 respectively, and need between first CPU (central processing unit) 102 and second CPU (central processing unit) 104 to link up, so the framework of Fig. 2 can be controlled mpeg module 204 and decoder module 206 efficiently by IDE interface 114.
Fig. 5 illustrates the example of the sequential chart of decoder module (108 or 206) running.Please refer to Fig. 5,206 pairs of laser discs of decoder module read data need be through reading to send (read pie) 502, writing and send (writepie) 504 and hold (host pie) 506 3 processes of sending.When wherein reading to send (read pie) 502 to represent optical read head to search the tram, read the process of laser disc raw data (raw data).Write and send (write pie) 504 to finish representative datas to have decoded and finish.Hold the process that the data of sending (host pie) 506 representative decoding to be finished transmit.
In the command sequence of Fig. 3, must hold by the time and send 506 to finish (time 510) afterwards, decoder module 108 just can carry out next time read to send 502 processes.In the command sequence of Fig. 4, for instance,, 504 finish, hold and send 506 still when carrying out when writing to send because decoder module 206 receives ATAPI command information 406 in advance, decoder module 206 can begin to read to send 502 in the time 508.So, can save time time of 508 to time 510 to place (pre-fetch) in advance.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limiting the present invention, anyly is familiar with the person skilled in art, without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when the right claim defines.
Claims (8)
1. the method for a CD-ROM device control wafer move instruction in advance comprises at least:
The decision of one mpeg module transmits a command information with a speed and gives a decoder module;
After this decoder module received this command information, reading of data also was stored in a storer and takes for this mpeg module;
This data storing is behind this storer, and this decoder module transmits a confirmation signal and gives this mpeg module; And
Needless to say receive this confirmation signal, this mpeg module according to this speed directly row send Next Command information and give this decoder module.
2. the method for CD-ROM device control wafer according to claim 1 move instruction in advance is characterized in that, this mpeg module is taken the data that are stored in this storer and decoded according to MPEG 2 standards.
3. the method for CD-ROM device control wafer according to claim 1 move instruction in advance, it is characterized in that, this decoder module comprises a servo controller at least to control a servo motor, and the optical read head of this servo motor control CD-ROM device is to read the data that are stored in a laser disc.
4. the method for CD-ROM device control wafer according to claim 1 move instruction in advance is characterized in that, more comprises to utilize a central processing unit controls and coordinate this mpeg module and this decoder module.
5. CD-ROM device control circuit comprises at least:
One decoder module, receive a plurality of command informations, wherein after this decoder module received a command information, this decoder module read data to be stored in the storer in this decoder module, when this data storing behind this storer, this decoder module is sent a confirmation signal;
One mpeg module, decision sends a speed of this this command information of decoder module to, needless to say receives this confirmation signal, directly goes according to this speed and sends this a plurality of command informations, and this mpeg module is taken these data that are stored in this storer; And
This decoder module and this mpeg module are controlled and coordinated to one CPU (central processing unit).
6. CD-ROM device control circuit according to claim 5 is characterized in that, this mpeg module is taken the data that are stored in this storer and decoded according to MPEG 2 standards.
7. CD-ROM device control circuit according to claim 5 is characterized in that, this decoder module comprises a servo controller at least to control a servo motor, and this servo motor is controlled an optical read head to read the data that are stored in a laser disc.
8. CD-ROM device control circuit according to claim 5 is characterized in that, this circuit is a single-chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100286081A CN100536004C (en) | 2004-03-04 | 2004-03-04 | Control chip of optical disc apparatus with pre-moving instruction function and its transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100286081A CN100536004C (en) | 2004-03-04 | 2004-03-04 | Control chip of optical disc apparatus with pre-moving instruction function and its transmission method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560845A CN1560845A (en) | 2005-01-05 |
| CN100536004C true CN100536004C (en) | 2009-09-02 |
Family
ID=34441268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100286081A Expired - Fee Related CN100536004C (en) | 2004-03-04 | 2004-03-04 | Control chip of optical disc apparatus with pre-moving instruction function and its transmission method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100536004C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI261195B (en) | 2004-02-25 | 2006-09-01 | Via Tech Inc | Optical drive control chip capable of transmitting command messages in advance and transmission method thereof |
| TWI289797B (en) | 2005-02-04 | 2007-11-11 | Via Tech Inc | External digital communication routing module |
-
2004
- 2004-03-04 CN CNB2004100286081A patent/CN100536004C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1560845A (en) | 2005-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7827320B1 (en) | Serial ATA device implementing intra-command processing by detecting XRDY primitive while in the XRDY state | |
| CN1273983C (en) | Data storage device for background verifying record medium or detecting data of write-in medium | |
| US20050166014A1 (en) | Data transmission control method and storage device | |
| CN1538274A (en) | Transmission channel and its control method | |
| JP2006099665A (en) | Data storage device, and control method of power save mode of serial interface part thereof | |
| CN1527308A (en) | Digital video frequency recorder and driving method and program thereof | |
| CN1112631C (en) | Signal reproducing apparatus and signal reproducing method | |
| CN100536004C (en) | Control chip of optical disc apparatus with pre-moving instruction function and its transmission method | |
| CN1505030A (en) | Content recording and reproducing apparatus, disk device, and controlling method thereof | |
| JP3906911B2 (en) | Recording apparatus and recording method | |
| US7778325B2 (en) | Optical drive controller chip capable of sending command messages in advance and transmission method thereof | |
| CN1867989A (en) | Storage medium storing moving-image data that includes mode information, and reproducing apparatus and method | |
| JP3072559B2 (en) | ATAPI interface control circuit and DVD player using the circuit | |
| CN201608799U (en) | Liquid crystal television capable of processing external data | |
| CN1180623C (en) | Equipment and method of broadcasting digital high sharpness TV code flow from digital universal disk | |
| CN1318989C (en) | Method for processing interrup request in optical disc driver | |
| US7336573B2 (en) | Method for handling interrupt request in optical storage drive | |
| EP1434223A3 (en) | Method and apparatus for data access in a video recorder with a disk drive | |
| JPH07141124A (en) | Library device | |
| CN201069652Y (en) | A DVD recorder reading external data | |
| JPH08286836A (en) | Information recording and reproducing device | |
| US20070150431A1 (en) | Method and apparatus for handling a group of at least one data object | |
| CN1762017A (en) | Method of transferring data for efficiently using disk drive | |
| JP4066800B2 (en) | Recording apparatus and recording method | |
| JP2010170209A (en) | Data transfer device, data transfer controller and data processor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: YUTIAN STOCK CO., LTD. Free format text: FORMER OWNER: WEISHENG ELECTRONICS CO., LTD. Effective date: 20080125 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20080125 Address after: Delaware Applicant after: VIA Technologies, Inc. Address before: The new city of Taiwan province Taipei County Road No. 535 8 floor Applicant before: VIA TECHNOLOGIES, Inc. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |