CN2836156Y - Low-temperature polycrystalline silicon display unit of MTV player - Google Patents
Low-temperature polycrystalline silicon display unit of MTV player Download PDFInfo
- Publication number
- CN2836156Y CN2836156Y CN 200520060399 CN200520060399U CN2836156Y CN 2836156 Y CN2836156 Y CN 2836156Y CN 200520060399 CN200520060399 CN 200520060399 CN 200520060399 U CN200520060399 U CN 200520060399U CN 2836156 Y CN2836156 Y CN 2836156Y
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- ltps
- cpu central
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Abstract
The utility model relates to a low-temperature polycrystalline silicon display unit of an MTV player which uses an analog video driving chip for driving an LTPS display. The utility model has the purpose to overcome the difficulty in PCB wiring and to decrease the degree of difficulty in PCB wiring. The utility model comprises a power supply which provides electric energy, and a central processing unit (CPU). The output terminal of the power supply is connected with the CPU. The CPU outputs analog video signals to an LTPS driver. The output terminal of the LTPS driver is connected with an LTPS display screen which shows images. Analog composite video signals are input to the utility model. After impedance is matched by an emitter follower, the analog composite video signals enter the LTPS driver from different paths. Then after decoded by the LTPS driver, the analog composite video signal drives are amplified to drive the LTPS display screen to show images. Thus, the difficulty in PCB wiring is overcome, which simplifies the entire wiring of the MTV player.
Description
Technical field
The utility model relates to a kind of MTV player, particularly relates to the electronic circuit technology that a kind of use analog video chip for driving drives low temperature polycrystalline silicon (LTPS) display.
Background technology
The MTV player is different with MP3 and MP4, it has a little color LCD screen, the flash memory that uses vast capacity is as storer, the MTV player is a kind of new audio/video file video player, but video files such as movie, DVD, VCD, MTV, support the audio-visual formatted file of multiple difference to play, for example the audio/video file of forms such as MPEG-4, ASF, WMV, RM, DAT.Compatible MP3, the WMA form music play of MTV player, support voice recording (Voice Recording), line recording function (Line-in), plug and play USB flash disk function.At present, the TFT display majority that MTV player in market is commonly used is to use number; Simulate relatively, the digital TFT display of Cai Yonging is strict on PCB cloth version on the market, and control is got up also very complicated, and therefore improved necessity arranged.
Summary of the invention
The utility model purpose is to overcome the difficulty on the PCB layout, reduce the difficulty of PCB layout, a kind of employing LTPS (LTPS----low temperature polysilicon low temperature polycrystalline silicon) is provided driver chip, cooperates the technology of the LCD display composition graphic display terminal of LTPS.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
A kind of MTV player multicrystal display device of low temperature, contain a power supply that electric energy is provided, a cpu central processing unit, power output end connects cpu central processing unit, cpu central processing unit output analog video signal is given the LTPS driver, and the LTPS driver output end connects the LTPS display screen of display image.
LTPS driver of the present utility model adopts the LV4137W chip as driving, what import is analog composite video signal, enter the LTPS driver through the road that emitter follower carries out dividing after the impedance matching, after the LTPS drivers decode, amplify again and driving LTPS display screen display image, use LTPS (low temperature polysilicon low temperature polycrystalline silicon) technology, reach the difficulty that overcomes on the PCB layout, make MTV player machine routing succinct.
Description of drawings
Fig. 1 is the circuit structure block scheme of the utility model embodiment.
Fig. 2 is the circuit diagram of the utility model embodiment LTPS part.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
The utility model parts comprise: LTPS display screen 1; LTPS driver 2; cpu central processing unit 3; electric weight testing circuit 4; mu balanced circuit 5; power supply 6; charging management chip 7; SDRAM image program storer 8; SDRAM system program storer 9; the 2nd FLASH storer 10; USB HOST control chip 11; button 12; FLASH storer 13; Compact Flash driver 14; USB changes ata interface 15; usb 16; EEPROM electricallyerasable ROM (EEROM) 17; S terminal 18; earphone output 19; earphone socket 20; audio frequency D/A or mould/number conversion chip 21; microphone 22; audio frequency input 23; audio frequency output 24; video output 25; direct current USB charger 26.
The utility model contains a power supply 6 that electric energy is provided, a cpu central processing unit 3, power supply 6 output terminals connect cpu central processing unit 3, and cpu central processing unit 3 output analog video signals are given LTPS driver 2, and LTPS driver 2 output terminals connect the LTPS display screen 1 of display image.LTPS driver 2 contains U
29, U
30The DC boosting chip, U
29, U
30Chip and peripheral cell are formed provides the driving voltage of LTPS display screen 1 and the booster circuit of voltage backlight, and LTPS driver 2 also contains the U of three-terminal voltage-stabilizing IC
2Chip and U
26Drive master chip.
Cpu central processing unit 3 connects the USB HOST control chip 11 of control read-write operation, USB HOST control chip 11 connects usb 16, cpu central processing unit 3 connects SDRAM system program storer 9 and Compact Flash driver 14, and CompactFlash driver 14 connects FLASH storer 13.Cpu central processing unit 3 is provided with audio frequency and imports that 23 interfaces, audio frequency are exported 24 interfaces, video is exported 25 interfaces; the audio frequency of cpu central processing unit 3 is exported 24 interfaces and is connected earphone socket 20, earphone output 19 by high frequency D/A or mould/number conversion chip 21, and the video of cpu central processing unit 3 is exported the S terminal 18 that 25 interfaces connect external outputting video signal.Cpu central processing unit 3 connects SDRAM image program storer 8, SDRAM system program storer 9, the 2nd FLASH storer 10, cpu central processing unit 3 accesses system program from the 2nd FLASH storer 10 and puts into SDRAM system program storer 9, and cpu central processing unit 3 accesses image program from the 2nd FLASH storer 10 and puts into SDRAM image program storer 8.
Cpu central processing unit 3 input ends connect button 12, cpu central processing unit 3 output terminals connect S terminal 18, USB changes ata interface 15, USB changes the EEPROM electricallyerasable ROM (EEROM) 17 that ata interface 15 connects its working procedure of storage, USB changes ata interface 15 and connects usb 16, and USB changes ata interface 15 message of usb 16 and extraneous exchange is delivered to Flash storer 13 by Compact Flash driver 14.LTPS display screen 1 contains pin circuit TFT_LCD1.The data sound signal of cpu central processing unit 3 is converted to analogue audio frequency and exports 19 from earphone through high frequency D/A or mould/number conversion chip 21; the audio frequency of cpu central processing unit 3 is imported 23 interfaces and is connected microphone 22 by high frequency D/A or mould/number conversion chip 21; voice signal produces to enter audio frequency D/A or mould/number conversion chip 21 amplifications and carry out ADC through microphone 22 and is converted to data-signal, handles through cpu central processing unit 3 and imports FLASH storer 13 into.Power supply 6 is lithium batteries, power supply 6 input ends connect direct current USB charger 26 through charging management chip 7, power supply 6 output terminals connect electric weight testing circuit 4 and mu balanced circuit 5, power supply 6 is by connecting cpu central processing unit 3, LTPS driver 2, Compact Flash driver 14, the 2nd FLASH storer 10 after mu balanced circuit 5 step-downs, cpu central processing unit 3 connects the electric weight testing circuit 4 that can detect power supply 6 electric weight.
The 12POWER that after machine is connected with the mains 6 (lithium batteries), pushes button start, power supply is given the each several part circuit supply after mu balanced circuit 5 step-downs, at power supply 6 (lithium battery) when voltage is not enough, charge through 7 pairs of power supplys 6 of charging management chip (lithium battery) with additional power source direct current USB charger 26, during the machine operate as normal, electric weight testing circuit 4 can detect power supplys 6 (lithium battery) thereby electric weight and feed back to cpu central processing unit 3 and show electric weight.
When start, cpu central processing unit 3 accesses system program from the 2nd FLASH storer 10 and puts into SDRAM system program storer 9 and image program and put into SDRAM image program storer 8 and operation, after various program run are normal, give LTPS driver 2 from cpu central processing unit 3 output analog video signals, and making LTPS display 1 display image, vision signal can also externally be exported through S terminal 18 terminals.When playing MP3 song and MP4 program, cpu central processing unit 3 meeting process Compact Flash drivers 14 and FLASH storer 13 access message puts into SDRAM system program storer 9, and after cpu central processing unit 3 decodings, image shows through LTPS display screen 1; The data sound signal is converted to analogue audio frequency and exports 19 from earphone through audio frequency D/A or mould/number conversion chip 21.
External output audio is from earphone socket 20 outputs.Voice signal produces through microphone 22, enters audio frequency D/A or mould/number conversion chip 21 amplifications and carry out ADC to be converted to data-signal, handles depositing FLASH storer 13 in through cpu central processing unit 3.Upload or download when usb 16 is connected with PC, signal changes 14 controls of 15 pairs of CompactFlash drivers of ata interface by USB, and then upload, download data 13 li of computer and Flash storeies, the working procedure that USB changes ata interface 15 is transferred from the read-only memory access 17 of EEPROM electric erasable and is come.During plug-in other subordinate memory device (USB flash disk, MP3 player, All-in-One card reader, USB mobile hard disc box or digital camera), cpu central processing unit 3 control USB HOST control chips 11 carry out read-write operation.Signal at first via USB communications protocol, simulation framework signal, send IP and give the subordinate memory device, by usb 16 switching equipment signal and setting signal are described after, successfully link.
This machine adopts high-performance FLASH storer 13 control chips to control multi-disc FLASH read-write operation, and the CompactFlash interface that the FLASH interface is transferred to standard by Compact Flash driver 14 is connected with the ide interface of cpu central processing unit 3, it is set to the TureIDE pattern, in system, FLASH storer 13 storage spaces are mounted among the romfs of uclinux with the IDE apparatus-form, the IDE-DMA type of drive of employing system realizes the read-write operation to IDE equipment, thereby realizes the read-write (referring to Fig. 2) to FLASH storer 13.The ide interface of cpu central processing unit 3 has been adopted in this operation, and transmission speed is fast, adds to use dma mode to make read or write speed faster, has improved the broadcast performance of this machine; Secondly, the RSB2.0 chip of USBTOICE can directly ide interface be continuous therewith, PC-LINK process PC end can directly carry out read-write operation to it, need not to see through cpu central processing unit 3, improve the data rate of this machine, circuit is incorporated into dwindles the volume that the shared space of standard C ompactFlash card reduces machine on the machine at last.
LTPS driver 2 contains U
29, U
30The DC boosting chip, U
29, U
30Chip and peripheral cell are formed booster circuit, and the driving voltage of LTPS display screen 1 demonstration and the voltage backlight of LTPS display screen 1 are provided respectively; LTPS driver 2 contains the U of three-terminal voltage-stabilizing IC
2Chip provides the 3V operating voltage of LV4137W voltage stabilizing; LTPS driver 2 also contains driving master chip U
26(referring to Fig. 2).LTPS display screen 1 contains pin circuit TFT_LCD1, and pin circuit TFT_LCD1 connects LTPS driver 2.
Above illustrated embodiment is only with for conveniently illustrating the utility model, be not that the utility model is done any pro forma restriction, have in the technical field under any and know the knowledgeable usually, if in the scope that does not break away from technical characterictic that the utility model is carried, utilize technology contents that the utility model discloses to do the local equivalent embodiment that changes or modify, and do not break away from technical characterictic content of the present utility model, all still belong in the scope of the utility model technical characterictic.
Claims (9)
1, a kind of MTV player multicrystal display device of low temperature, contain a power supply (6) that electric energy is provided, a cpu central processing unit (3), power supply (6) output terminal connects cpu central processing unit (3), it is characterized in that: described cpu central processing unit (3) output analog video signal is given LTPS driver (2), and LTPS driver (2) output terminal connects the LTPS display screen (1) of display image.
2, MTV player multicrystal display device of low temperature according to claim 1, it is characterized in that: described LTPS driver (2) contains U
29, U
30The DC boosting chip, U
29, U
30Chip and peripheral cell are formed provides the driving voltage of LTPS display screen (1) and the booster circuit of voltage backlight, and LTPS driver (2) contains the U of three-terminal voltage-stabilizing IC
2Chip, U
26Drive master chip.
3, MTV player multicrystal display device of low temperature according to claim 1, it is characterized in that: described cpu central processing unit (3) connects the USB HOST control chip (11) of control read-write operation, USB HOST control chip (11) connects USB interface (16), cpu central processing unit (3) connects SDRAM system program storer (9) and Compact Flash driver (14), and described Compact Flash driver (14) connects FLASH storer (13).
4, MTV player multicrystal display device of low temperature according to claim 1; it is characterized in that: described cpu central processing unit (3) is provided with audio frequency input (23) interface, audio frequency output (24) interface, video output (25) interface; audio frequency output (24) interface of cpu central processing unit (3) connects earphone socket (20), earphone output (19) by high frequency D/A or mould/number conversion chip (21), and video output (25) interface of cpu central processing unit (3) connects the S terminal (18) of external outputting video signal.
5, MTV player multicrystal display device of low temperature according to claim 1, it is characterized in that: described cpu central processing unit (3) connects SDRAM image program storer (8), SDRAM system program storer (9), the 2nd FLASH storer (10), cpu central processing unit (3) accesses system program from the 2nd FLASH storer (10) and puts into SDRAM system program storer (9), and cpu central processing unit (3) accesses image program from the 2nd FLASH storer (10) and puts into SDRAM image program storer (8).
6, MTV player multicrystal display device of low temperature according to claim 1, it is characterized in that: described cpu central processing unit (3) input end connects button (12), cpu central processing unit (3) output terminal connects S terminal (18), USB changes ata interface (15), USB changes the EEPROM electricallyerasable ROM (EEROM) (17) that ata interface (15) connects its working procedure of storage, USB changes ata interface (15) and connects USB interface (16), and USB changes ata interface (15) message of USB interface (16) and extraneous exchange is delivered to Flash storer (13) by Compact Flash driver (14).
7, MTV player multicrystal display device of low temperature according to claim 1, it is characterized in that: described LTPS display screen (1) contains pin circuit TFT_LCD1.
8; MTV player multicrystal display device of low temperature according to claim 1; it is characterized in that: the data sound signal of described cpu central processing unit (3) is converted to analogue audio frequency and exports (19) from earphone through high frequency D/A or mould/number conversion chip (21); audio frequency input (23) interface of cpu central processing unit (3) connects microphone (22) by high frequency D/A or mould/number conversion chip (21); voice signal produces through microphone (22) and enters audio frequency D/A or mould/number conversion chip (21) and amplify and carry out ADC and be converted to data-signal, handles through cpu central processing unit (3) and imports FLASH storer (13) into.
9, MTV player multicrystal display device of low temperature according to claim 1, it is characterized in that: described power supply (6) is a lithium battery, power supply (6) input end connects direct current USB charger (26) through charging management chip (7), power supply (6) output terminal connects electric weight testing circuit (4) and mu balanced circuit (5), power supply (6) connects cpu central processing unit (3) after by mu balanced circuit (5) step-down, LTPS driver (2), Compact Flash driver (14), the 2nd FLASH storer (10), cpu central processing unit (3) connects the electric weight testing circuit (4) that can detect power supply (6) electric weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060399 CN2836156Y (en) | 2005-06-29 | 2005-06-29 | Low-temperature polycrystalline silicon display unit of MTV player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060399 CN2836156Y (en) | 2005-06-29 | 2005-06-29 | Low-temperature polycrystalline silicon display unit of MTV player |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2836156Y true CN2836156Y (en) | 2006-11-08 |
Family
ID=37300807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520060399 Expired - Fee Related CN2836156Y (en) | 2005-06-29 | 2005-06-29 | Low-temperature polycrystalline silicon display unit of MTV player |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2836156Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116343699A (en) * | 2023-02-16 | 2023-06-27 | 深圳市羿智科技有限公司 | Display screen driving system |
-
2005
- 2005-06-29 CN CN 200520060399 patent/CN2836156Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116343699A (en) * | 2023-02-16 | 2023-06-27 | 深圳市羿智科技有限公司 | Display screen driving system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN FU JOE ELECTRONIC SCIENCE AND TECHNOLOGY Free format text: FORMER OWNER: FUXU ELECTRONIC CO., LTD., DONGGUAN CITY Effective date: 20080926 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080926 Address after: Guangdong Dongcheng District city of Dongguan Province Zhou Wu Shui Wang Ling Industrial Park Road 113, zip code: 523000 Patentee after: Dongguan futuremedia Electronic Technology Co., Ltd. Address before: No. 3, No. 41, Liuzhou Road, Jincheng village, Changan Town, Guangdong City, Dongguan Province, China: 523852 Patentee before: Dongguan Fuxu Electronics Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 |