CN2567684Y - MP3 visual rereader - Google Patents
MP3 visual rereader Download PDFInfo
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- CN2567684Y CN2567684Y CN 02248100 CN02248100U CN2567684Y CN 2567684 Y CN2567684 Y CN 2567684Y CN 02248100 CN02248100 CN 02248100 CN 02248100 U CN02248100 U CN 02248100U CN 2567684 Y CN2567684 Y CN 2567684Y
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Abstract
The utility model relates to an MP3 visual repeater. The utility model comprises a cabinet (1), a circuit board (2), a power supply (3), a liquid crystal display (4) which is connected with the circuit board (2), and push buttons (5), wherein, the circuit board (2) comprises a central processing unit (21), a memory (22) which is in bidirectional connection with the central processing unit (21), a communication circuit (23), a receiving demoding circuit (28), the push buttons (5), a sound processing circuit (24) and the liquid crystal display (4) which are connected with an output port of the central processing unit (21), and a sound recording circuit (26), a backlight drive circuit (25) and a backlight piece (29) which are connected with the input end of the central processing unit (21); besides, a communication interface (8) is in bidirectional connection with the communication circuit (23). The repeater of the utility model, which is small in volume, can not only play MP3 but also can synchronously display lyrics, achieve following reading contrast, exchange data with a computer and play audio files of different formats, and besides, the utility model can upgrade software instantly so as to add new functions.
Description
Technical field
The utility model relates to a kind of voice record and reproducer, relates in particular to a kind of MP3 and WMA of carrying out and plays, and is suitable for learning a language and the visual language repeater of amusement.
Background technology
At present, common MP3 player can only be play MP3, and function singleness can not synchronously displaying lyrics, can not follow and read contrast, therefore can not satisfy the needs of foreign language studying; And tape type language repeater has a lot of shortcomings: repeatedly change tape, capacity less, bulky, carry inconvenience, synchronously videotex, can't be re-reading by sentence, easy to wear, the easy distortion of sound, function be too simple, can not with the computer swap data, can not use the learning materials that are present in a large number on the internet, and the audio format of playing is single, can't adapt to now constantly upgrade, weed out the old and bring forth the new, the broadcast and the amusement of miscellaneous audio format.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists and provides a kind of multiple functional, durable and volume is little, the MP3 visual language repeater that is convenient for carrying.
For achieving the above object, MP3 visual language repeater of the present utility model comprises casing, be installed in circuit board and the power supply in the casing, LCD and the button that is positioned at the casing surface and is connected with described circuit board, described circuit board comprises: central processing unit, with the two-way storer that is connected of central processing unit, telecommunication circuit, radio reception decoding circuit and button, the sound treatment circuit that is connected with the output port of central processing unit and LCD, the recording circuit that is connected with the input end of central processing unit; Communication interface is connected with telecommunication circuit is two-way.Described central processing unit adopts DSP, USB highly integrated, the single-chip of ADC, DAC, OP, ROM, RAM, DCDC, PLL function, and memory bank then adopts the FLASH chip, shows to have used lattice lcd display.USB control port by central processing unit is drawn USB interface; By the I/O port controlling FM radio chip of central processing unit, and the timing scan keyboard obtains user's input information.Mp3 file and lyrics file are sent to the MP3 visual language repeater and are saved in the memory bank by USB after the computer software time synchronizing.When the user selects mp3 file to play, the mp3 file and the lyrics are taken out from FLASH by MCU, after the MP3 data are sent the DSP decompress(ion), deliver to the AD/DA conversion chip, again through power amplifier output, lyrics data is liquor charging crystal display demonstration synchronously then.In keyboard, there is one to be specifically designed to reading contrast operation's button.The MP3 visual language repeater has added FM radio chip; In software function, add the English-Chinese dictionary module, adopt similar mobile phone input mode inputting English letter.By the renewal of software, reach new, the broadcast of different audio formats makes the user closely follow current frontline technology with the method for minimum cost and most convenient.
Compared with prior art, MP3 visual language repeater of the present utility model has following advantage: volume is little, is convenient for carrying; Can not only play MP3, and can synchronously displaying lyrics, can be with reading contrast, can with the audio file of the new different-format of computer swap data, broadcast, and also add radio and English-Chinese dictionary function; All right real-time upgrading software is to increase new function.
Description of drawings
The description of drawings of digital visual language repeater of the present utility model is as follows:
Fig. 1 is the functional-block diagram of the utility model MP3 visual language repeater;
Fig. 2 is the basic circuit diagram of the utility model MP3 visual language repeater;
Fig. 3 is the profile synoptic diagram of the utility model MP3 visual language repeater;
Fig. 4 is the basic function mode synoptic diagram of the utility model MP3 visual language repeater system.
Below in conjunction with drawings and Examples the utility model is described in further detail.
Embodiment
As shown in Figure 1, MP3 visual language repeater of the present utility model comprises: casing 1, be installed in circuit board 2 and the power supply 3 in the casing 1, LCD 4 and the button 5 that is positioned at casing 1 surface and is connected with described circuit board 2; Described circuit board 2 comprises: central processing unit 21, with the central processing unit 21 two-way storeies that are connected 22, telecommunication circuit 23, radio reception decoding circuit 28, sound treatment circuit 24, LCD 4 and the backlight drive circuit 25 that is connected with the output port of central processing unit 21 and backlight 29, the recording circuit 26 and the microphone 7 thereof that are connected with the input end of central processing unit 21; Described communication interface 8 and 23 two-way connections of telecommunication circuit.Earphone 6 is connected with the input/output terminal of radio reception decoding circuit 28 with sound treatment circuit 24 respectively.
Described button 5 is arranged on the upper surface (Fig. 3) of language repeater housing.Described button 5 comprises: " beginning/time-out ", " menu/DEF ", " sound +/ABC ", " sound-/GHI ", " rewind down ", " F.F. ", " recording/WXYZ ", " EQ/TUV ", " with reading/contrast/PQRS ", " interval A-B/JKL ", " re-reading/MNO " and " withdrawing from " 12 buttons.
Fig. 2 is the basic circuit diagram of the utility model MP3 visual language repeater, because the length of Fig. 2 is too big, it is divided into Fig. 2-1, Fig. 2-2, Fig. 2-3 and Fig. 2-4 four part.Described central processing unit 21 is that model is little process chip U2 of STMP3410, it is integrated DSP digital signal processor, the digital conversion of audio frequency ADC/DAC, OP, DCDC, PLL single-chip, program memory ROM, data-carrier store RAM, USB and I/O port.It is flash memory chip U3 and the U4 of K9F5608UOA-YCBO that described storer 22 adopts models, and chip U3 and U4 and U2 are by FLASH RDY, I00～I07, RE, CE0, CE1, CLE, ALE and the WE terminals are two-way is connected.C0～C3 of described little process chip U2, R0～R2 terminals connect button 5.
Described radio reception demoder 28 contains chip U5, inductance L 7～L9, diode D3, D4, capacitor C 26～C30, C54～C75, resistance R 22, the R40～R50 that model is TEA5767; Chip U5 and little process chip U2 by FMR, FM_L, BUS_EN, FM_DATA, FM_CLK, the FM_WE Wiring port is two-way is connected.
Described sound treatment circuit 24 contains capacitor C 40, C41, C8, C38, C44, C45, resistance R 1～R4, R6～R7, inductance L 2～L4; The left and right sound channels terminals LINE OUT L of described little process chip U2 is connected earphone 6 through C44, L3 with C45, L4 respectively with LINE OUT R.
Described recording circuit 26 is by MIC1 inputting audio signal, and the MIC pin of the little process chip U2 of input is saved in external memory storage 22 again after chip U2 decoding converts voice data to after capacitor C 9 couplings.
Described 30 of the little process chip U2 that states is connected telecommunication circuit 23 and communication interface 8 thereof through resistance R 25, R26 respectively with 31 terminals.
Described backlight drive circuit 25 contains EL chip for driving U1, inductance L 10, resistance R 9 and capacitor C 76～C77; No. 1 leg of chip U1 connects little process chip U2, and it 4 is connected backlight 29 with No. 5 leg.
The principle of work of each functional module of brief description the utility model MP3 visual language repeater:
The DSP of microprocessor (MCU) is the control core of MP3 visual language repeater.Integrated USB in the DSP, I2S, I2C, BOOT ROM, RAM, ADC, DAC, PLL, OP and DCDC etc.Can the dma mode reading external memory.
Display module: MCU can be implemented in character display and image on the LCD display by send order and data to lcd driver.When wanting character display, MCU sends write signal to lcd driver, and R/w puts height, sends display command simultaneously, writes the address of display random access memory earlier, then wanting data presented to write in the display random access memory.The COM on the corresponding LCD of the data of display random access memory and the current potential of SEG line.When COM and SEG line were high level simultaneously, the liquid crystal dots at their intersection point places was lighted.
The voice data input and output: during playback, DSP delivers to the DSP internal RAM to voice data from external memory storage, forms the DAC that audio stream send DSP by DSP decoding back, is exported by power amplifier then.During recording, sound signal is sent to the ADC of DSP, obtains voice data, deliver to DSP, then by behind the dsp code data being saved in external memory storage by microphone.
Whether the keyboard input: set a timer, regularly press with I/O scanning button, if button is pressed, the I/O port can detect low level.Can there be which I/O port to detect low level by judgement and judges which button is pressed.
USB PORT COM: when the user will upgrade the data of MP3 visual language repeater or software, use PORT COM.The host computer of communication is a computer, and slave computer is the MP3 visual language repeater.Crossing USB port by the computer expert gives an order and controls whole communication process fully.
NAND FLASH: the parts of storaging user data.It adopts nonlinear SanDisk chip.Four addresses such as the address Column address Page address Block address NANDaddress of FLASH are formed jointly.Writing, read all of address and data finished by 8 I/O mouths.The order of read-write FLASH is: send the read write command of 1 byte, then write the address of 3 bytes, could read and write the data of 528 bytes then continuously.
Radio: receive frequency range is FM 87MHz～108MHz.Radio adopts digital tuning, can control wireless tuning and lock platform by DSP.
Mu balanced circuit: the voltage about the 1.5V that provides by battery, behind DC-DC, become the burning voltage of 3.3V, offer operating circuit.
The encoding and decoding of all audio formats are finished by dsp software.Upgrading is convenient, can realize playing the audio file of any form in theory.
Fig. 4 is the basic function mode synoptic diagram of MP3 visual language repeater system.
MP3 visual language repeater of the present utility model has following function:
1, can play the MPT file that we define ourselves, promptly play visual mp3 file.Not only song can be listened on one side, the lyrics can also be seen.Very convenient especially for studying English.And can edit played file according to the hobby of oneself with the software that we provide.
2, when playing back music, can use up soon, rewind down, re-reading, with reading contrast.The comparison of pronunciation of oneself and former sound when being used for English learning.Can substitute language repeater.
3, can play common MP3, the WAV music file can also be play wma file.As common music player.
4, have the FM radio, digital tuning, the logical certainly platform of receiving, logical certainly the preservation.Also can manually transfer platform.Can preserve 20 radio station at most, and random additions and deletions channel.
5, can record, use the ADPCM coding, 8K sampling, sound clarity.Record length is long.Even wireless sound also can well be recorded.
6, have the Kingsoft Powerword true man electronic dictionary that pronounces.Have a large vocabulary, pronunciation is special clear.
7, can make electronic hard disc, as long as the user opens player, connect the USB line with computer, computer will be searched driver automatically, and increase the electronics drive, and the user can operate this electronic hard disc as common hard disk of operation or floppy disk then.Very convenient.
8, can online upgrading software.And do not influence user data.In case exploitation has new function, the user can freely enjoy use immediately.
9, especially big LCDs, Chinese interface.Easy and simple to handle, show to come into plain view.
The employed main unit of MP3 visual language repeater of the present utility model, device such as following table.
| Symbol | Title | Model specification |
| U1 | EL drives | SP4423 |
| U2 | Microprocessor | STMP3410 |
| U3 U4 | FLASH | K9F5608U0A-YCB0 |
| U5 | The radio reception decoding chip | TEA5767 |
| SW1～SW12 | Button | SSM-120 |
| MIC1 | Microphone | CZ034HP423 |
| JA1 | Earphone socket | JH3519-030G-INT |
| USB1 | USB1 seat (5PIN) | MNC20-5K5P10 |
| LCD | LCDs | TSE6195 |
| L2～L5 L7～L10 | Inductance | |
| Q1～Q7 | Triode | |
| D1～D4 | Diode | |
| C1～C30、Q35 | Electric capacity | 0.1uF±20％(0603) |
| C31～C75 C77～C79 | Electric capacity | |
| R1～R7 R10～R15 | Resistance | |
| R25～R50 R101～R104 | Resistance | |
| X1、XT1 | Crystal oscillator | 24.576MHZ，32.768KHZ |
Claims (11)
1, a kind of MP3 visual language repeater comprises casing (1), is installed in circuit board (2) and power supply (3) in the casing (1), is positioned at casing (1) is surperficial and be connected with described circuit board (2) LCD (4) and button (5), it is characterized in that:
Described circuit board (2) comprising: central processing unit (21), with the two-way storer that is connected of central processing unit (21) (22), telecommunication circuit (23), radio reception decoding circuit (28) and button (5), the sound treatment circuit (24) that is connected with the output port of central processing unit (21) and LCD (4), the recording circuit (26) that is connected with the input end of central processing unit (21); Communication interface (8) and two-way connection of telecommunication circuit (23).
2, MP3 visual language repeater according to claim 1, it is characterized in that: also comprise the backlight drive circuit (25) and the backlight (29) that are connected with the output terminal of central processing unit (21), the earphone (6) that is connected with the input/output terminal of radio reception decoding circuit (28) and sound treatment circuit (24) respectively, the microphone (7) that is connected with the input end of recording circuit (26).
3, MP3 visual language repeater according to claim 1 and 2 is characterized in that: described central processing unit (21) is integrated DSP digital signal processor, the digital conversion of audio frequency ADC/DAC, OP, DCDC, PLL single-chip, program memory ROM, data-carrier store RAM, USB and I/O port.
4, MP3 visual language repeater according to claim 1 and 2 is characterized in that: described button (5) comprising: " beginning/time-out ", " menu/DEF ", " sound +/ABC ", " sound-/GHI ", " rewind down ", " F.F. ", " recording/WXYZ ", " EQ/TUV ", " with reading/contrast/PQRS ", " interval A-B/JKL ", " re-reading/MNO " and " withdrawing from " 12 buttons.
5, MP3 visual language repeater according to claim 1 and 2, it is characterized in that: described central processing unit (21) is that model is little process chip U2 of STMP3410, it is flash memory chip U3 and the U4 of K9F5608UOA-YCBO that storer (22) adopts model, and described chip U3 and U4 and U2 are by FLASH RDY, I00～I07, RE, CE0, CE1, CLE, ALE and the WE terminals are two-way is connected.
6, MP3 visual language repeater according to claim 3 is characterized in that: described radio reception demoder (28) contains chip U5, inductance L 7～L9, varactor D3, D4, capacitor C 26～C30, C54～C75, resistance R 22, the R40～R50 that model is TEA5767; Chip U5 and little process chip U2 by FM_R, FM_L, BUS_EN, FM_DATA, FM_CLK, the FM_WE Wiring port is two-way is connected.
7, MP3 visual language repeater according to claim 1 is characterized in that: C0～C3 of described little process chip U2, R0～R2 terminals connect button (5).
8, MP3 visual language repeater according to claim 1 is characterized in that: described sound treatment circuit (24) contains capacitor C 40, C41, C8, C38, C44, C45, resistance R 1～R4, R6～R7, inductance L 2～L4; The left and right sound channels terminals LINE OUTL of described little process chip U2 is connected earphone (6) through C44, L3 respectively with LINE OUT R with C45, L4.
9, MP3 visual language repeater according to claim 1, it is characterized in that: described recording circuit (26) is by MIC1 inputting audio signal, the MIC pin of the little process chip U2 of input is saved in external memory storage (22) again after chip U2 decoding converts voice data to after capacitor C 9 couplings.
10, MP3 visual language repeater according to claim 1 is characterized in that: described 30 of the little process chip U2 that states is connected telecommunication circuit (23) and communication interface (8) thereof through resistance R 25, R26 respectively with 31 terminals.
11, MP3 visual language repeater according to claim 1 is characterized in that: described backlight drive circuit (25) contains EL chip for driving U1, inductance L 10, resistance R 9 and capacitor C 76～C77; No. 1 leg of chip U1 connects little process chip U2, and it 4 is connected backlight (29) with No. 5 leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02248100 CN2567684Y (en) | 2002-09-13 | 2002-09-13 | MP3 visual rereader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02248100 CN2567684Y (en) | 2002-09-13 | 2002-09-13 | MP3 visual rereader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2567684Y true CN2567684Y (en) | 2003-08-20 |
Family
ID=33718799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02248100 Expired - Fee Related CN2567684Y (en) | 2002-09-13 | 2002-09-13 | MP3 visual rereader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2567684Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389405C (en) * | 2004-12-27 | 2008-05-21 | 上海乐金广电电子有限公司 | Structure of digital audio file, and method for recording and playing files |
-
2002
- 2002-09-13 CN CN 02248100 patent/CN2567684Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389405C (en) * | 2004-12-27 | 2008-05-21 | 上海乐金广电电子有限公司 | Structure of digital audio file, and method for recording and playing files |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |