CN1295103C - Vehicular video-audio player - Google Patents
Vehicular video-audio player Download PDFInfo
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- CN1295103C CN1295103C CNB2003101081436A CN200310108143A CN1295103C CN 1295103 C CN1295103 C CN 1295103C CN B2003101081436 A CNB2003101081436 A CN B2003101081436A CN 200310108143 A CN200310108143 A CN 200310108143A CN 1295103 C CN1295103 C CN 1295103C
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Abstract
The present invention discloses a novel vehicular video-audio player capable of using a movable hard disk (a U disk) as a video-audio carrier, which comprises the U disk, a selecting key, a control panel, a receiver circuit, a volume control circuit, a power amplifying circuit, a liquid crystal display screen and a loudspeaker. The present invention is characterized in that the present invention also comprises a universal serial bus (USB) interface circuit, a central control and decoding circuit, and an internal storage circuit, wherein the central control and decoding circuit searches and reads video-audio information compressed in the U disk by a USB interface. After the video-audio information is decoded by the central control and decoding circuit, the video-audio information is reduced to video signals and displayed on the liquid crystal display screen. The audio signals obtains power amplification treatment is played by the loudspeaker. Because the present invention uses the U disk as the carrier of video-audio programs and the U disk, the USB interface circuit, the central control and decoding circuit and the existing vehicle audio circuit are organically combined together, the present invention has the advantages of large storage capacitance of video-audio programs, abundant sound sources, no vibration influence and stable playing.
Description
Technical field
The present invention relates to the automobile AV device, especially relate to a kind of novel automobile audio and video player that utilizes removable hard disk (USB flash disk).
Background technology
The audio and video player that existing automobile is used is divided into two big classes: tape player and laser player (being divided into: CD, VCD, DVD etc.).Automobile-used audio and video player is specialized on the automobile and is used, and owing to can produce vibration in the vehicle traveling process, so existing automobile audio and video player has some critical defects: 1, tape player is in technology and the requirement to tonequality, and tape is play owing to lower tone, magnetic head is easily dirty and tape technologies will be tending towards superseded on audio-visual Hi-Fi technique.2, the laser player is owing to be to read data by laser-bounce, and in the machine mechanical drive arranged, so antivibration effect extreme difference can cause the interruption of music in the playing process or picture; The laser disc of the usefulness of playing can can't be play when serious owing to behind the repeated use, cut can occur; Automobile-used CD-audio player (CD player) often adopts the DVD multidisc storage to play as enlarging storage content (the first song of CD disc storage 10-12), and the machine price is high; The life-span of laser head is short.
Summary of the invention
The object of the present invention is to provide a kind of new carrier as the broadcast form, have that the image and sound program storage content is big, source of sound is abundant, be not subjected to vibration effect, play the stable novel automobile audio and video player that utilizes removable hard disk (USB flash disk).
The object of the present invention is achieved like this: the present invention includes removable hard disk, selection key, control panel, receiver circuit, volume control circuit, power amplifier, LCDs and loud speaker, the control button is arranged on the control panel, feature is also to comprise USB (USB) interface circuit, centring control and decoding circuit, the storage inside circuit, press selection key and control button, removable hard disk information is read in selection, centring control and decoding circuit are by the USB circuit search and read the video that compresses in the removable hard disk, audio-frequency information, the video of compression in the removable hard disk, audio-frequency information is after centring control and decoding circuit decoding, be reduced into vision signal and show on LCDs, sound signal carries out playing back by loud speaker behind the power gain through volume control circuit and power amplifier.
The storage inside circuit by flash memory circuit and at random memory circuit form.
The present invention is owing to adopt removable hard disk (USB flash disk) as the song carrier, removable hard disk, USB (USB) interface circuit, centring control and decoding circuit, storage inside circuit and existing auto audio equipment circuit are organically combined, so have following advantage:
1, online video and audio compression form image and sound programs such as (WMV, MP3, WMA) is very abundant, and following carried convenient, so source of sound is abundant;
2, along with development of science and technology, the storage space of USB flash disk can continue to increase, thus in USB flash disk not only the song of storage can get more and more, and can store the multi-section film; (USB flash disk with present 256M is an example, and it can store the image and sound program of 68 first MP3 format or the image and sound program of nearly 300 first Microsoft's Window media compression formats (WMA form), has the USB flash disk of 1G even 10G future.)
3, with the image and sound program of MP3 or the compression of WMA form, can satisfy automobile-used audio-visual requirement fully;
There is not mechanical drive during 4, owing to broadcast, thus be not subjected to vibration effect, and play stable;
5, security of products, stability and stability are high, and storage file is not fragile;
6, low production cost.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is schematic circuit diagram of the present invention.
The specific embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in further detail.
The present invention is by removable hard disk, the USB circuit, centring control and decoding circuit U1, the storage inside circuit, selection key, control panel, receiver circuit, volume control circuit, power amplifier, LCDs and loud speaker are formed, the control button is arranged on the control panel, the USB circuit is provided with the interface that patches removable hard disk, the USB circuit is connected with centring control and decoding circuit by connection lead, centring control and decoding circuit are by connection lead and storage inside circuit, LCDs is connected with volume control circuit, centring control and decoding circuit can be to MP3, WMA, RM (video compression format of Realplayer Media company), the video of AVI forms such as (video compression format) and audio-frequency information decoding, control panel is connected with selection key by connection lead, selection key is connected with receiver circuit with the USB circuit by connection lead, and receiver circuit is connected with volume control circuit successively by connection lead, power amplifier is connected with loud speaker.
The storage inside circuit by flash memory circuit U2 and at random memory circuit U3 form.
The USB circuit is made up of interface J2, resistance R 7-R13, data communication end 2 pin of interface J2 and signal input part 53 pin that meet centring control and decoding circuit U1 after resistance R 7, R8 connect successively, data communication end 3 pin and signal input part 54 pin that meet centring control and decoding circuit U1 after resistance R 9, R10 connect successively, ground connection after ground terminal 4 pin of interface J2 are connected with resistance R 11, resistance R 12 is connected between the common port and ground of resistance R 7, R8, and resistance R 13 is connected between the common port and ground of resistance R 9, R10.
The address end 17-23 of centring control and decoding circuit U1,26-31,34-38 pin (A0-A17) meets the address end 25-18 of flash memory circuit U2 respectively, 8-1,48,17 pin and the address end 23-26 of memory circuit U3 at random, 29-34,22,35 pin, coupling end 36 pin (NC) (No connection) not, assembly is selected address end 20,21 pin (BA0, BA1) (Bank Select address), column address strobe end 17 pin (CAS) (Column address strobe), row address strobe end 18 pin (RAS) (Row address strobe), the quantitative data input of centring control and decoding circuit U1/mouth 125-128,2-6,9-15 pin (DQ0-DQ15) connects quantitative data input/mouth 29 of flash memory circuit U2 respectively, 31,33,35,38,40,42,44,30,32,34,36,39,41,43,45 pin and quantitative data input/mouth 2 of memory circuit U3 at random, 4,5,7,8,10,11,13,42,44,45,47,48,50,51,53 pin, not coupling end 39 pin (NC) of centring control and decoding circuit U1 and not coupling end 16 pin (NC) that meet flash memory circuit U2 after resistance R 14 is connected, quantitative data input/output shielding end 42 pin (UDQM) (Data input/output mask) connect the quantitative data input of memory circuit U3/output shielding end 39 pin (UDQM) at random, clock end 44 pin (CLK) connect clock end 38 pin (CLK) of memory circuit U3 at random, chip select end 46 pin (CS) connect chip select end 19 pin (CS) of memory circuit U3 at random, chip enable end 50 pin (CE#) (Chip Enable) connect chip enable end 26 pin (CE#) of flash memory circuit U2, clock Enable Pin 56 pin (CKE) (Clock enable) connect clock Enable Pin 37 pin (CKE) of memory circuit U3 at random, that writes that Enable Pin 58 pin (WE#) (Write Enable) meet flash memory circuit U2 writes Enable Pin 11 pin (WE#), output enable end 59 pin (OE#) (Output Enable) connect output enable end 28 pin (OE#) of flash memory circuit U2, the audio signal output end 90 of centring control and decoding circuit U1,91 pin respectively with capacitor C 1, connect the left and right sound track signals input end of volume control circuit after the C2 series connection.
Power supply detection and supply circuit are by integrated regulator U4, U5, aerotron Q, diode D, resistance R 1-R6 forms, the common port of power end 83 pin of centring control and decoding circuit U1 and power end 1 pin of collecting electrode that meets aerotron Q after resistance R 6 is connected and interface J2, the base stage of aerotron Q connects power control terminal 124 pin of centring control and decoding circuit U1, the emitter of aerotron Q connects the anode of diode D, the negative electrode of diode D connects power end 64 pin of centring control and decoding circuit U1, power end 72 pin of centring control and decoding circuit U1 successively with resistance R 3, connect the negative electrode of diode D after the R2 series connection, the power end 77 of centring control and decoding circuit U1,81,89 pin successively with resistance R 1, connect the negative electrode of diode D after the R2 series connection, resistance R 4 is attempted by between the collector and emitter of aerotron Q, resistance R 5 is attempted by between the base stage and emitter of aerotron Q, integrated regulator U4, the input end Vin of U5 all connects contact 1 pin of mode of operation selection key SW2, the output end vo ut of integrated regulator U4 connects the power end 7 of centring control and decoding circuit U1,24,41,119 pin, the output end vo ut of integrated regulator U5 connects the collecting electrode of aerotron Q, and the control end SHDN of integrated regulator U5 connects power supply signal control end 123 pin of centring control and decoding circuit U1.
Selection key SW2 is the mode of operation button, and selection key SW2 pulls out contact 1 pin for the portable hard drive play mode is audio-visual mode state, and pulling out contact 2 pin is radio receiver mode.
Control panel by power button SW1, choose and bent form the public termination centring control of resistance R 19, R20 and push button signalling control end 82 pin of decoding circuit U1 by strong S2, time-out by strong S5, resistance R 15-R20 by strong S4, sound field pattern by strong S3, broadcast by strong S1, choosing are bent down.On the selected songs by under strong S1, the selected songs by strong S2, suspend by strong S3, to play by strong S4, sound field pattern be that the portable hard drive mode of operation is controlled button by strong S5.
Use:
1, audio-visual mode: earlier USB (USB) equipment (as the USB devices such as hard-disk cartridge in removable hard disk, charged source) is inserted among the interface J2 of USB circuit, press power button SW1 then, press selection key SW2, enter audio-visual mode state, integrated regulator U4 gets the operating voltage of electric generation centring control and decoding circuit U1, and centring control and decoding circuit U1 start working.Whether centring control and decoding circuit U1 detect by power end 83 pin has universal serial bus device to be connected in the USB circuit, if any, then detect outside universal serial bus device whether the 5V operating voltage is provided by power end 83 pin, as do not provide, then power supply signal control end 123 pin are exported high level, make integrated regulator U5 work, output 5V voltage, while power control terminal 124 pin output low levels, make aerotron Q conducting, 5V voltage is exported to outside universal serial bus device power supply, outside universal serial bus device gets electric work, so corresponding data (video of compression in the outside universal serial bus device, audio-frequency information) the data communication end 2 by interface J2,3 pin are imported the signal input part 53 of centring control and decoding circuit U1 respectively, 54 pin, deposit in flash memory circuit U2 respectively by data bus and address bus as required again, in the memory circuit U3, call during for centring control and decoding circuit U1 broadcast music at random.
When pressing MP3 mode of operation control button, different variations will take place in the voltage on push button signalling control end 82 pin, centring control and decoding circuit U1 be by detecting the situation that these change of voltage judge that respective keys are pressed, thereby make corresponding operatings such as selected songs, playback, time-out, sound field mode converting.Centring control and decoding circuit U1 with the video/audio information of compressing in the removable hard disk deliver to flash memory circuit U2, at random in the memory circuit U3, flash memory circuit U2, the video/audio information of compression delivered in the memory circuit U3 centring control and decoding circuit U1 decoding at random, being reduced into vision signal shows on LCDs, the binaural audio signal that plays back by centring control and decoding circuit U1 decoding is through the output of audio signal output end 90,91 pin, through capacitor C 1, C2 send into that volume control circuit is regulated, power amplifier broadcasts to loud speaker after amplifying.
2, radio reception mode: press the radio reception button, enter the radio-receiving mode state, press frequency modulation button or amplitude modulation button then, enter fm band or AM band, regulate tuning button again, can select the radio station that to listen.
Claims (2)
1, a kind of novel automobile audio and video player, comprise removable hard disk, selection key, control panel, receiver circuit, volume control circuit, power amplifier, LCDs and loud speaker, the control button is arranged on the control panel, control panel is connected with selection key by connection lead, selection key is connected with receiver circuit with the USB circuit by connection lead, receiver circuit is connected with volume control circuit successively by connection lead, power amplifier is connected with loud speaker, it is characterized in that: also comprise the USB circuit, centring control and decoding circuit, the storage inside circuit, the USB circuit is provided with the interface that patches removable hard disk, the USB circuit is connected with centring control and decoding circuit by connection lead, centring control and decoding circuit are by connection lead and storage inside circuit, LCDs is connected with volume control circuit, control panel is connected with selection key by connection lead, and selection key is connected with receiver circuit with the USB circuit by connection lead.Wherein the USB circuit is by connector (J2), resistance (R7-R13) is formed, data communication end (2) pin and the resistance (R7 of connector (J2), R8) connect signal input part (53) pin of centring control and decoding circuit (U1) after the series connection successively, data communication end (3) pin and resistance (R9, R10) connect signal input part (54) pin of centring control and decoding circuit (U1) after the series connection successively, ground connection after ground terminal (4) pin of connector (J2) is connected with resistance (R11), resistance (R12) is connected on resistance (R7, R8) between the common port and ground, resistance (R13) is connected on resistance (R9, R10) between the common port and ground; Address end (the 17-23 of centring control and decoding circuit (U1), 26-31,34-38) pin meets the address end (25-18 of flash memory circuit (U2) respectively, 8-1,48,17) pin and the address end (23-26 of memory circuit (U3) at random, 29-34,22,35) pin, coupling end (36) pin not, assembly is selected address end (20,21) pin, column address strobe end (17) pin, row address strobe end (18) pin, quantitative data input/mouth (125-128 of centring control and decoding circuit (U1), 2-6,9-15) pin connects the quantitative data input/mouth (29 of flash memory circuit (U2) respectively, 31,33,35,38,40,42,44,30,32,34,36,39,41,43,45) pin and the quantitative data input/mouth (2 of memory circuit (U3) at random, 4,5,7,8,10,11,13,42,44,45,47,48,50,51,53) pin, not coupling end (39) pin of centring control and decoding circuit (U1) and not coupling end (16) pin that connects flash memory circuit (U2) after resistance (R14) is connected, quantitative data input/output shielding end (42) pin connects the quantitative data input of memory circuit (U3)/output shielding end (39) pin at random, clock end (44) pin connects clock end (38) pin of memory circuit (U3) at random, chip select end (46) pin connects chip select end (19) pin of memory circuit (U3) at random, chip enable end (50) pin connects chip enable end (26) pin of flash memory circuit (U2), clock Enable Pin (56) pin connects clock Enable Pin (37) pin of memory circuit (U3) at random, that writes that Enable Pin (58) pin connects flash memory circuit (U2) writes Enable Pin (11) pin, output enable end (59) pin connects output enable end (28) pin of flash memory circuit (U2), the audio signal output end (90 of centring control and decoding circuit (U1), 91) pin respectively with electric capacity (C1, C2) connect the left and right sound track signals input end of volume control circuit after the series connection; The storage inside circuit by flash memory circuit (U2) and at random memory circuit (U3) form.
2, novel automobile audio and video player as claimed in claim 1, it is characterized in that: comprise that also power supply detects and supply circuit, power supply detection and supply circuit are by integrated regulator (U4, U5), aerotron (Q), diode (D), resistance (R1-R6) is formed, the common port of power end (83) pin of centring control and decoding circuit (U1) and power end (1) pin of collecting electrode that connects aerotron (Q) after resistance (R6) is connected and connector (J2), the base stage of aerotron (Q) connects power control terminal (124) pin of centring control and decoding circuit (U1), the emitter of aerotron (Q) connects the anode of diode (D), the negative electrode of diode (D) connects power end (64) pin of centring control and decoding circuit (U1), power end (72) pin of centring control and decoding circuit (U1) successively with resistance (R3, R2) connect the negative electrode of diode (D) after the series connection, the power end (77 of centring control and decoding circuit (U1), 81,89) pin successively with resistance (R1, R2) connect the negative electrode of diode (D) after the series connection, resistance (R4) is attempted by between the collector and emitter of aerotron (Q), resistance (R5) is attempted by between the base stage and emitter of aerotron (Q), integrated regulator (U4, U5) input end (Vin) all connects contact (1) pin of mode of operation selection key (SW2), the mouth (Vout) of integrated regulator (U4) connects the power end (7 of centring control and decoding circuit (U1), 24,41,119) pin, the mouth (Vout) of integrated regulator (U5) connects the collecting electrode of aerotron (Q), and the control end (SHDN) of integrated regulator (U5) connects power supply signal control end (123) pin of centring control and decoding circuit (U1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101081436A CN1295103C (en) | 2003-10-21 | 2003-10-21 | Vehicular video-audio player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101081436A CN1295103C (en) | 2003-10-21 | 2003-10-21 | Vehicular video-audio player |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1528621A CN1528621A (en) | 2004-09-15 |
| CN1295103C true CN1295103C (en) | 2007-01-17 |
Family
ID=34304638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101081436A Ceased CN1295103C (en) | 2003-10-21 | 2003-10-21 | Vehicular video-audio player |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1295103C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101366856B1 (en) * | 2007-03-29 | 2014-02-21 | 삼성전자주식회사 | Display apparatus for displaying input video through various connector |
| CN103318303A (en) * | 2013-06-08 | 2013-09-25 | 开平市中铝实业有限公司 | Stereo system for motorcycle |
| CN107979794A (en) * | 2016-10-24 | 2018-05-01 | 惠州市新斯贝克动力科技有限公司 | Mobile audio frequency power-supply system and audio output and charging method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2530844Y (en) * | 2002-01-23 | 2003-01-15 | 杨曙辉 | Vehicle-mounted wireless MP3 receiving playback |
| CN2547562Y (en) * | 2002-05-22 | 2003-04-30 | 智玉奇 | Electronic music player for automobile |
| CN2560178Y (en) * | 2002-07-19 | 2003-07-09 | 黄义涌 | Digital music playback device with F.M transmission function |
-
2003
- 2003-10-21 CN CNB2003101081436A patent/CN1295103C/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2530844Y (en) * | 2002-01-23 | 2003-01-15 | 杨曙辉 | Vehicle-mounted wireless MP3 receiving playback |
| CN2547562Y (en) * | 2002-05-22 | 2003-04-30 | 智玉奇 | Electronic music player for automobile |
| CN2560178Y (en) * | 2002-07-19 | 2003-07-09 | 黄义涌 | Digital music playback device with F.M transmission function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1528621A (en) | 2004-09-15 |
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Decision date of declaring invalidation: 20111228 Decision number of declaring invalidation: 17812 Granted publication date: 20070117 |
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