CN201336150Y - Vehicular MP5 playing system - Google Patents
Vehicular MP5 playing system Download PDFInfo
- Publication number
- CN201336150Y CN201336150Y CNU2008201689914U CN200820168991U CN201336150Y CN 201336150 Y CN201336150 Y CN 201336150Y CN U2008201689914 U CNU2008201689914 U CN U2008201689914U CN 200820168991 U CN200820168991 U CN 200820168991U CN 201336150 Y CN201336150 Y CN 201336150Y
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- processing unit
- central processing
- keyboard
- loudspeaker
- vehicular
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Abstract
The utility model relates to a vehicular MP5 playing system, mainly comprising a central processing unit, an asynchronous static memory, a nonvolatile memory, a liquid crystal display, a loudspeaker, an input and output interface, an infrared remote control processing module, a global positioning module and a keyboard; the central processing unit is respectively connected with the asynchronous static memory, the nonvolatile memory, the liquid crystal display, the loudspeaker, the input and output interface, the infrared remote control processing module, the global positioning module and the keyboard; an ARM processor is used for decoding the existing encoded video signal and audio signal by adopting an MP5 decoding algorithm, and the video signal and the audio signal are converted into data streams; and a field programmable logic gate array is used for video output and audio output of the buffered data stream. The vehicular MP5 playing system has the benefits that the disadvantages of vibration resistance, temperature and dust proofing of a traditional DVD are overcome, the reliability of a product is improved, the service life of the product is increased, the vehicular MP5 playing system can lead a user to enjoy high-quality vehicular entertainment equipment when driving the vehicle, and the driving interest is increased.
Description
Technical field
The utility model relates to the car entertainment product scope, mainly is a kind of vehicle-mounted MP5 Play System.
Background technology
The Vehicular video electronics is to improve the automobile comfort level and the automotive electronics of amusement function more, and in recent years, China's automobile industry development was swift and violent, and the electronic product market that automobile is relevant is huge day by day.Car entertainment is as the representative of the audio-visual market comsupton trend of young mobile, and development prospect is quite wide.In the majority with the foreign capitals brand at the automobile audio-video system of China's sale at present, home brands are less.Therefore, study and develop a car entertainment control system that is with autonomous characteristic, its actual application value is arranged.
The utility model content
The utility model purpose is exactly the deficiency that will overcome in the above-mentioned technology, and the vehicle-mounted MP5 Play System of a kind of employing based on Video processing is provided, and can solve many drawbacks that the vehicle-carrying DVD system is arranged now, realizes high storage density, high functional integration, low-power consumption.
The utility model solves the technical scheme that its technical matters adopts: this vehicle-mounted MP5 Play System, mainly comprise central processing unit, asynchronous sram, nonvolatile memory, LCDs, loudspeaker, IO interface, the infrared remote control processing module, global location module and keyboard, central processing unit is made up of field programmable gate array and arm processor, central processing unit respectively with asynchronous sram, nonvolatile memory, LCDs, loudspeaker, IO interface, the infrared remote control processing module, the global location module is connected with keyboard; Arm processor is used for adopting the MP5 decoding algorithm to decode to encoded vision signal and sound signal, converts thereof into to be data stream; Field programmable gate array is used for the data stream of buffering is carried out video output and audio frequency output.
Peripheral bus joins on described LCDs, loudspeaker, keyboard and the sheet, joins with central processing unit again.Adopt mixed-media network modules mixed-media, peripheral bus joins on this mixed-media network modules mixed-media and the sheet, joins with central processing unit again.
The effect that the utility model is useful is: this uses novel patent to use up-to-date decoding algorithm, antidetonation, temperature and the dustproof drawback of traditional DVD have been overcome, improve product reliability, increased product serviceable life, made things convenient for the user at steering vehicle ten both enjoy high quality car entertainment equipment, the enjoyment that has increased driving has been arranged.
Description of drawings
Fig. 1 is a system construction drawing of the present utility model.
Fig. 2 is playing flow figure of the present utility model.
Fig. 3 is an operational flowchart of the present utility model.
Fig. 4 is processor communication interface figure of the present utility model.
Fig. 5 is a FPGA outer extension memory interface schema of the present utility model.
Fig. 6 is an ARM interface schema of the present utility model.
Fig. 7 is an ARM outer extension memory interface schema of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
1. system hardware
This vehicle-mounted MP5 Play System described in the utility model, mainly comprise central processing unit, asynchronous sram, nonvolatile memory, LCDs, loudspeaker, IO interface, infrared remote control processing module, global location module and keyboard, central processing unit is by being made up of the Spartan3S500E fpga chip+arm processor of Xilinx company, software is platform by embedded OS, embeds firmware and drives the middleware composition.Central processing unit is connected with keyboard with asynchronous sram, nonvolatile memory, LCDs, loudspeaker, IO interface, infrared remote control processing module, global location module respectively; Arm processor is used for adopting the MP5 decoding algorithm to decode to encoded vision signal and sound signal, converts thereof into to be data stream; Field programmable gate array is responsible for reading media playback by built-in FIFO, and coded file is converted into data stream, and the data stream in the buffering is carried out video output and audio frequency output.Peripheral bus joins on described LCDs, loudspeaker, keyboard and the sheet, joins with central processing unit again.Adopt mixed-media network modules mixed-media, peripheral bus joins on this mixed-media network modules mixed-media and the sheet, joins with central processing unit again.
2. decoding
Decoding unit is responsible for by the high speed arm processor, and coded data is decoded, and mainly is divided into vision signal and sound signal.The MP5 decoding algorithm is supported the various video form.Have characteristics such as the decoding decoding speed is fast, compressibility is high, the format compatible type is many.Finishing dealing with ARM outputs to back level cell fifo behind the decoding algorithm, and FPGA is responsible for output of the data video in the buffering and audio frequency are exported.
3. keyboard
Keyboard circuit is divided into function key and key is set, is placed on to supply user's choice menus on the header board and function is set,
4. function realizes
The utility model operating process as shown in Figure 3:
1. store and the deletion multimedia file
The user inserts USB memory devices such as USB flash disk, SD card in the USB slot of this machine, system detects residual memory space number of this machine and the media file size total amount in the USB flash disk, if remaining space is enough, then all media files are all copied on the machine, and whether inquiry replaces file of the same name.When remaining space is not enough, then, provide prompting during deletion according to the existing media file of time deletion, satisfy the demands up to storage space.
2. playing, is playing flow figure as shown in Figure 2.
2.1 played in order
When playing one section medium, system detects the next medium of playlist, if arrived the playlist afterbody, system detects play mode, if for the single broadcast, then from new this section of broadcast medium, if be loop play, first medium in the playlist then, otherwise then stop to play.If do not arrive the playlist afterbody, then system detects play mode, if for the single broadcast, and then from new this section of broadcast medium, otherwise next medium in the playlist.
2.2. memory is play
During shutdown, the media play progress that does not play can be stored, and in order to continue broadcast when starting shooting next time, the A-B circulation is provided with to play and is cancelled.
2.3. select to play
The user can press when playing and move back the band button, accesses media list, by the media file that last select button selection will be play, presses broadcast button and plays selecteed file, and the A-B circulation is provided with to play and is cancelled.
3. F.F., rewinding, suspend, stop, next, last head
The user presses F.F., rewinding, suspends, stops, next, last first button realizes F.F., rewinding respectively, suspends, stops, next and last first broadcast are put.If be fast-forward to the medium ending, stop F.F., judge the medium that the next one will be play or stop broadcast according to the method for played in order.If be backwards to the medium head, then stop automatically falling back, and from the beginning play this media file.Constantly press next in arbitrary broadcast, will finish current media and play, the rule according to played in order forwards next medium to or stops broadcast simultaneously.Constantly press a head in arbitrary broadcast, will stop immediately playing, forward last medium to or play first medium according to the played in order rule.Press above-mentioned arbitrary key and all will cancel the setting of A-B loop play automatically.
4. be provided with
4.1 play relevant the setting
The setting of display color and brightness
In playing process, press button is set, access setup menu, press left and right sides options button, select to show to be provided with, press and determine that key enters demonstration setting, press left and right sides options button, select the brightness setting, press confirming button, enter brightness the interface is set, press options button adjusting video playback brightness up and down.Press confirming button after finishing and preserve the setting and the last interface of withdrawing the membership.Be provided with under the interface, the user can use cancel key cancellation setting operation, returns to broadcasting pictures.
In playing process, press button is set, access setup menu, press left and right sides options button, select to show to be provided with, press and determine that key enters demonstration setting, presses left and right sides options button, the selection color is provided with, press confirming button, enter color the interface is set, press LR-button, select a kind of in three kinds of colors of red, green, blue, press the saturation degree that color is chosen in the select button adjusting.Pressing confirming button after finishing preserves setting and returns to an interface.Be provided with under the interface, the user can use cancel key cancellation setting operation, returns to broadcasting pictures.
Recover acquiescence and show setting
In playing process, press button is set, access setup menu, press left and right sides options button, select to show to be provided with, press and determine that key enters demonstration setting, press left and right sides options button, select to recover the acquiescence demonstration and be provided with.Be provided with under the interface, the user can use cancel key cancellation setting operation, returns to broadcasting pictures.
Volume is provided with
(1) in playing process, press volume and regulate button, directly regulate volume.
(2) in playing process, press button is set, access setup menu, press left and right sides options button, select the volume setting, press and determine that key enters the volume setting, press left and right sides options button, select the sound of different-waveband, the volume that options button is regulated selected wave band about pressing.Pressing confirming button after finishing preserves setting and returns to an interface.Be provided with under the interface, the user can use cancel key cancellation setting operation, returns to broadcasting pictures.
Shown in schematic diagram, Fig. 4 is the communication interface schematic diagram of ARM+FPGA dual core processor, connect FPGA and arm processor by the parallel high-speed bus, Fig. 5 is the schematic diagram of outer extension memory interface, FPGA extends out FLASH and DDRAM storer, and Fig. 6 is the interface principle figure of arm processor, has wherein described the resource and the configuration of ARM peripheral hardware, Fig. 7 is the schematic diagram of ARM outer extension memory interface, by extending out SRAM and FLASH increases memory capacity.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (3)
1, a kind of vehicle-mounted MP5 Play System, it is characterized in that: mainly comprise central processing unit, asynchronous sram, nonvolatile memory, LCDs, loudspeaker, IO interface, infrared remote control processing module, global location module and keyboard, central processing unit is made up of field programmable gate array and arm processor, and central processing unit is connected with keyboard with asynchronous sram, nonvolatile memory, LCDs, loudspeaker, IO interface, infrared remote control processing module, global location module respectively; Arm processor is used for adopting the MP5 decoding algorithm to decode to encoded vision signal and sound signal, converts thereof into to be data stream; Field programmable gate array is used for the data stream of buffering is carried out video output and audio frequency output.
2, vehicle-mounted MP5 Play System according to claim 1, it is characterized in that: peripheral bus joins on described LCDs, loudspeaker, keyboard and the sheet, joins with central processing unit again.
3, vehicle-mounted MP5 Play System according to claim 1 is characterized in that: adopt mixed-media network modules mixed-media, peripheral bus joins on this mixed-media network modules mixed-media and the sheet, joins with central processing unit again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201689914U CN201336150Y (en) | 2008-12-08 | 2008-12-08 | Vehicular MP5 playing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201689914U CN201336150Y (en) | 2008-12-08 | 2008-12-08 | Vehicular MP5 playing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201336150Y true CN201336150Y (en) | 2009-10-28 |
Family
ID=41287809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201689914U Expired - Fee Related CN201336150Y (en) | 2008-12-08 | 2008-12-08 | Vehicular MP5 playing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201336150Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106844230A (en) * | 2017-02-21 | 2017-06-13 | 奇瑞汽车股份有限公司 | A kind of method and device of refresh controller program |
| CN108037683A (en) * | 2017-12-20 | 2018-05-15 | 深圳市沃特沃德股份有限公司 | Onboard system recovers the method and onboard system of application program running state |
-
2008
- 2008-12-08 CN CNU2008201689914U patent/CN201336150Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106844230A (en) * | 2017-02-21 | 2017-06-13 | 奇瑞汽车股份有限公司 | A kind of method and device of refresh controller program |
| CN108037683A (en) * | 2017-12-20 | 2018-05-15 | 深圳市沃特沃德股份有限公司 | Onboard system recovers the method and onboard system of application program running state |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20100108 |