CN100589199C - Playing method of DVD player - Google Patents

Playing method of DVD player Download PDF

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Publication number
CN100589199C
CN100589199C CN200510033436A CN200510033436A CN100589199C CN 100589199 C CN100589199 C CN 100589199C CN 200510033436 A CN200510033436 A CN 200510033436A CN 200510033436 A CN200510033436 A CN 200510033436A CN 100589199 C CN100589199 C CN 100589199C
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China
Prior art keywords
flash card
card
file
dvd
flash
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Expired - Fee Related
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CN200510033436A
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Chinese (zh)
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CN1832015A (en
Inventor
李健
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ZHONGSHAN CITY YIDA TECHNOLOGY Co Ltd
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ZHONGSHAN CITY YIDA TECHNOLOGY Co Ltd
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Priority to CN200510033436A priority Critical patent/CN100589199C/en
Publication of CN1832015A publication Critical patent/CN1832015A/en
Application granted granted Critical
Publication of CN100589199C publication Critical patent/CN100589199C/en
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Abstract

A method for playing DVD player includes inserting flash memory card and judging its type by system dispatch - management module, entering CPU in card read state to distribute and initialize system resource, fetching original catalogue information on flash memory card file by data channel and transmitting it to special file system by media driving module, fetching file list and catalogue and selecting out file to be played by DVD player, loading decoder microcode and playing multimedia file as well as outputting video - audio signal.

Description

The player method of DVD player
Technical field
The present invention relates to a kind of player method of DVD player, particularly a kind of player method of supporting that flash card Flash Card reads.
Technical background
Along with the raising of people's living standard, people are also more and more higher to the requirement of material, and increasing people locks onto the video playback of home entertaining on one's body the DVD, and DVD popularizes rapidly like this.Common DVD player can read the data of various video discs, as: DVD, VCD comprise VCD1.0, VCD1.1, VCD2.0, SVCD, CVD etc., MP3, JPEG, P-CD, WMA, CDDA, HDCD, CDDA-DTS.Along with the market demand and development of technology, electronic equipments such as digital camera/Digital Video begin to adopt in a large number flash card Flash Card as the content of multimedia storage medium.The DVD player of prior art, can not read the content of multimedia on the flash card Flash Card, therefore develop the content of multimedia that to support on the flash card Flash Card and play again the active demand that the video disc player of compatible common DVD video disc of while becomes high-end consumers.
Summary of the invention
The player method that the purpose of this invention is to provide a kind of DVD player, the technical matters that solve are to possess under the basic function prerequisite in DVD player, read the content of multimedia on the flash card.
The present invention is by the following technical solutions: a kind of player method of DVD player may further comprise the steps: one, the user inserts flash card the corresponding screens of card reader socket; Two, the system call administration module reads in the signal of socket detection pin, judges the flash card type of inserting; Three, system call administration module order CPU enters into card reading status; Four, CPU distributes and the needed system resource of initialization Card Reader driver; Five, the flash memory process unit makes system bottom High Speed I/O data channel read the original directory information of flash card file, sends it to media-driven module; Six, after the media-driven module is carried out the information classification arrangement at dissimilar flash cards, transmit the proprietary file system FileX that data are given flash card; Seven, original file system PAT16 of DVD player and FAT32 read the catalogue and the listed files of flash card by this proprietary file system, and come out by the interface display of DVD player; Eight, behind the selected file that will play of user, the system call administration module obtains the initial logical address of this document by original file system FAT16 and FAT32, sends this selected file data that will play to the data stream pipeline, exchanges to decoder memory again; Nine, the data type feature analyzed according to demoder of system call administration module is written into suitable demoder microcode; Ten, the system call administration module begins to play that the user selectes leaves multimedia file data on the flash card in, and exports corresponding AV signal.
When the present invention is in broadcast state at DVD, system call administration module timing scan card reader socket detection pin.
When the present invention was in broadcast state at DVD, the system call administration module read signal single pass card reader socket detection pin per 0.5 second.
The present invention is when the DVD playing back video disc, and after the user inserted the corresponding screens of card reader socket with flash card, the system call administration module stops the DVD video disc to be play, and discharges corresponding system resources, and switches to card reading status.
The present invention is after the selected file that will play of user, system software obtains the initial logical address of this document by proprietary file system, read the catalogue and the listed files information of flash card by original file system FAT16 and FAT32, after the media-driven module is carried out the information classification arrangement at dissimilar flash cards, transmit data and give proprietary file system FileX, the flash memory process unit makes system bottom High Speed I/O data channel read the original directory information of flash card file, send it to media-driven module, and will select the file data that to play and send the data stream pipeline to.
The present invention is when Card Reader, and the user extracts flash card, and system then stops to play, and discharge corresponding system resources, and the switched system state is to reading DVD video disc state.
Card reader socket of the present invention is 6 to close 1 card reader socket.
System call management of the present invention comprises: Memory Allocation, system clock setting, input and output I/O mouth are provided with, demoder DSP microcode is adjusted.
The present invention compared with prior art, increase the method for reading flash card, the user just can be with DVD player by network download MPEG4 film and be stored in the flash card like this, utilize this machine to play again, can also directly insert this machine to the flash card of digital camera plays, on the TV of giant-screen, appreciate, bring great convenience, make common DVD player become a multimedia platform that compatibility is very high to the user.
Description of drawings
Fig. 1 is a system hardware block diagram of the present invention.
Fig. 2 is card reader hardware interface figure of the present invention.
Fig. 3 is a card reader hardware block diagram of the present invention.
Fig. 4 is a software module block diagram of the present invention.
Specific embodiments
Below in conjunction with drawings and Examples the present invention is described in further detail.As shown in Figure 1, the hardware that the present invention adopts is included on the platform of DVD-1606 MPEG4DVD player of digital company limited in Shenzhen one, increases its player method that new card reader circuit is realized.The signal of movement through front-end processing module, data stream interface, video signal processing module to the video output module, another road signal of video signal processing module output through audio-frequency signal processing module to the audio frequency output module, the signal of flash card card reader output through the flash memory process unit to data stream interface.Movement adopts the S71-DL3C of Korea S Samsung Samsung company, and CPU adopts the ZR36776 of U.S. Zoran Corp., and the card reader deck adopts the FIN042-02-D1 and the FIN042-02-D4 of Shenzhen Tai Suo company.
As shown in Figures 2 and 3, socket J1 is used for connecting mainboard, and all control signals and data-signal are sent to host CPU I76.Deck CON2 is the FIN042-02-D4 of Tai Suo company, is 4 to close 1 card holder connector, supports MS/SD/MMC/SM.Deck CON1 is the FIN042-02-D4 of Tai Suo company, is the CF card holder connector, supports CF/CFII.Which kind of flash card FlashCard signal I76io_FC be used for detecting to insert, and its principle is to utilize different flash card FlashCard to insert to cause SD_CD, SM_CD, MS_INS or CF_CD short circuit and the level that influences this signal changes and judges.Chip U1 (FST3257) is the high-speed bus change-over switch of U.S. fairchild company, is used for the expansion of the input/output port of coupled system when Card Reader and multiplexing.
Software systems of the present invention are to develop to form on the I76 DVD of U.S. Zoran Corp. platform software, version V200411.The CPU core of this system is 186 systems, adopts the embedded multiple task operating system of uITRON.The compiling debugging acid is the Paradigm C++6.00.037 SP4 of ParadigmSystems company.
As shown in Figure 4, the player method step of DVD player of the present invention is as follows:
1, at DVD video disc broadcast state, whether system call management System manager module scans card reader socket detection pin per 0.5 second, have flash card Flash Card to insert to judge.
2, the flash card Flash Card of content of multimedia inserts the 6 corresponding screens of closing 1 card reader socket, and the signal that system call management System manager module test socket detects pin changes.
3, system call management System manager module is read in the signal of socket detection pin, judges the flash card Flash Card type of inserting.
4, system call management System manager module stops the broadcast of DVD video disc, discharge corresponding system resources, and the switched system state is to card reading status.
5, the needed system resource of system call management System manager module initialization Card Reader driver comprises: Memory Allocation, and the system clock setting, input and output I/O mouth is provided with, and demoder DSP microcode is adjusted.
6, system utilizes system bottom High Speed I/O data channel to read the original directory information of flash card Flash Card file system, and sends the media-driven module to.
7, after the media-driven module is then carried out the information classification arrangement at dissimilar flash card Flash Card, transmit data and give the proprietary file system FileX that aims at flash card Flash Card design.
8, original file system FAT16 and FAT32 then can read catalogue and the listed files of flash card Flash Card by proprietary file system FileX, and come out by the interface display of DVD player.
9, after the file that the user selectes is play, system software obtains the initial logical address of this document by file system, original file system FAT16 and FAT32 read catalogue and the listed files of flash card Flash Card by proprietary file system FileX, after the media-driven module is then carried out the information classification arrangement at dissimilar flash card Flash Card, transmit data and give proprietary file system FileX, system call management System manager module utilizes system bottom High Speed I/O data channel to read the original directory information of flash card Flash Card file system, and should play former data and send the data stream pipeline to, exchange to decoder memory again.
10, system call is managed the data type feature that System manager module is analyzed according to demoder, is written into suitable demoder microcode.
11, system call management System manager module begins to play that the user selectes leaves multimedia file data on the flash card Flash Card in, and exports corresponding AV signal.
12, if the user extracts flash card Flash Card, system call management System manager module stops to play, and discharge corresponding system resources, and the switched system state is to reading the dish state.
The type of the flash card Flash Card that can support has: CF, and CFII, MicroDrive, SD, MMC, SM, MS, MS pro etc. are the popular all flash card Flash Card in market at present.
The content of multimedia form that can support: Divx3.11, Divx4.22, Divx 5.x, Xvid, MPEG4 ASP comprises GMC, and QPEL, NeroDigital utilize existing system hardware and the software platform that can support the DVD player that MPEG4 plays, design new system hardware and develop new device driver, to support the broadcast of the content of multimedia on the flash card Flash Card.
Flash card Flash Card reads the relevant module effect of playing:
1. system call is managed System manager module, and responsible or commander finishes above-mentioned steps 1, step 2, step 3, step 4, step 5 and step 8, step 10, step 11, step 12.When the DVD broadcast state, read the I76io_FC signal once per 0.5 second, if signal changes, then explanation has flash card Flash Card to insert.This module utilizes the difference of the level variation of this signal to judge the flash card Flash Card type of insertion then, and the beginning switch mode is to flash card Flash Card read mode, distribute simultaneously and the needed system resource of initialization Card Reader driver, comprise: Memory Allocation, system clock is provided with, input and output I/O mouth is provided with, demoder DSP microcode adjustment etc.This program deposit in catalogue playcore filesys under the filex.It is in the major cycle of system drive task drive task.Under the CD read mode, NPM_handler and PPM_handler handle and issue the message that drives drive.Under flash card Flash Card read mode, handle this type of message by flash card message handling device FlashCard EventHandler.
2. flash card message handling device Flash Card event handler module coupled system management and running System manager module is finished the processing and the order transmission of concrete message.Program deposit in catalogue drive under the cardreader.Under flash card Flash Card read mode, issue the message that drives drive by this resume module.Simultaneously, it is commanded data stream is passed to data stream interface BSI, i.e. step 9 from flash card Flash Card.
3. flash memory process unit F CU module module is responsible for completing steps 6, promptly utilizes system bottom High Speed I/O data channel to read data on the flash card Flash Card.It is the bottom software on the inner FCU hardware system of I76, deposit in catalogue MediaCards FCU under.As the flash card FlasCard that drives parallel interface, such as CF, SM during MicroDrive, carries out on the SRAM of this program in sheet.
4. media-driven module Media Card Driver is responsible for completing steps 7, is used to drive different flash card Flash Card with the order of response from file system.This modular program deposit in catalogue MediaCards media under, be used to drive different flash card Flash Card with the order of response from file system.
5. dedicated file systems FileX relates to step 7, step 8.Be used to handle file system at flash card Flash Card.It is the file system of compatible MS_DOS, aims at flash card Flash Card service, deposit in catalogue playcore filesys under the filex.
6. conversion layer Translation Layer module is mainly used in and cooperates media-driven module Media Card Driver to transfer the logical address of certain unit of MS card and SM card to physical address.This program is deposited in file stl.c.The excessive data that this converse routine table utilization reads when initialization flash card Flash Card makes up.

Claims (8)

1. the player method of a DVD player, may further comprise the steps: one, the user inserts flash card the corresponding screens of card reader socket; Two, the system call administration module reads in the signal of socket detection pin, judges the flash card type of inserting; Three, system call administration module order CPU enters into card reading status; Four, CPU distributes and the needed system resource of initialization Card Reader driver; Five, the flash memory process unit makes system bottom High Speed I/O data channel read the original directory information of flash card file, sends it to media-driven module; Six, after the media-driven module is carried out the information classification arrangement at dissimilar flash cards, transmit the proprietary file system (FileX) that data are given flash card; Seven, original file system FAT16 of DVD player and FAT32 read the catalogue and the listed files of flash card by this proprietary file system, and come out by the interface display of DVD player; Eight, behind the selected file that will play of user, the system call administration module obtains the initial logical address of this document by original file system FAT16 and FAT32, sends this selected file data that will play to the data stream pipeline, exchanges to decoder memory again; Nine, the data type feature analyzed according to demoder of system call administration module is written into suitable demoder microcode; Ten, the system call administration module begins to play that the user selectes leaves multimedia file data on the flash card in, and exports corresponding AV signal.
2. the player method of DVD player according to claim 1 is characterized in that: described when DVD is in broadcast state, and system call administration module timing scan card reader socket detection pin.
3. the player method of DVD player according to claim 2 is characterized in that: described when DVD is in broadcast state, the system call administration module reads signal single pass card reader socket detection pin per 0.5 second.
4. the player method of DVD player according to claim 3, it is characterized in that: described when the DVD playing back video disc, after the user inserts the corresponding screens of card reader socket with flash card, the system call administration module stops the DVD video disc and plays, and the release corresponding system resources, and switch to card reading status.
5. the player method of DVD player according to claim 4, it is characterized in that: described after the selected file that will play of user, system software obtains the initial logical address of this document by proprietary file system, read the catalogue and the listed files information of flash card by original file system FAT16 and FAT32, after the media-driven module is carried out the information classification arrangement at dissimilar flash cards, transmit data and give proprietary file system (FileX), the flash memory process unit makes system bottom High Speed I/O data channel read the original directory information of flash card file, send it to media-driven module, and will select the file data that to play and send the data stream pipeline to.
6. the player method of DVD player according to claim 1, it is characterized in that: described the user extracts flash card when Card Reader, and system then stops to play, and discharge corresponding system resources, and the switched system state is to reading DVD video disc state.
7. the player method of DVD player according to claim 6 is characterized in that: described card reader socket is 6 to close 1 card reader socket.
8. the player method of DVD player according to claim 7 is characterized in that: described system call management comprises: Memory Allocation, system clock setting, input and output I/O mouth are provided with, demoder DSP microcode is adjusted.
CN200510033436A 2005-03-11 2005-03-11 Playing method of DVD player Expired - Fee Related CN100589199C (en)

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Application Number Priority Date Filing Date Title
CN200510033436A CN100589199C (en) 2005-03-11 2005-03-11 Playing method of DVD player

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Application Number Priority Date Filing Date Title
CN200510033436A CN100589199C (en) 2005-03-11 2005-03-11 Playing method of DVD player

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CN1832015A CN1832015A (en) 2006-09-13
CN100589199C true CN100589199C (en) 2010-02-10

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CN101118558B (en) * 2007-07-10 2011-05-25 青岛海信移动通信技术股份有限公司 Converting method and apparatus for resource file

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