CN1892882B

CN1892882B - Multi-disc type digital-code automobile sound equipment

Info

Publication number: CN1892882B
Application number: CN2005100409404A
Authority: CN
Inventors: 朱庆平
Original assignee: 朱庆平
Current assignee: Yangzhou Yuanyue Information Technology Research Institute Co., Ltd.
Priority date: 2005-07-08
Filing date: 2005-07-08
Publication date: 2011-07-20
Anticipated expiration: 2025-07-08
Also published as: CN1892882A

Abstract

The digital car audio in multiple disks type includes base unit and movable panel. The base unit is composed of radio module, external antenna, USB interface, SD interface (compatible to MMC card), audio input jack, circuit of audio power amplification, circuit of low frequency power, and one from optical drive, tape drive, or movable hard disk. The movable panel is composed of CPU, MP3 decoder, USB hub, USB interface, audio output circuit, audio output jack, control key set on panel, display screen, and FLASH memory etc. Using number keys on the control key set on panel selects relevant FLASH memory to play MP3 music in FLASH memory just like using CD player with multiple disks. There are USB interfaces capable of connecting to computer directly. FLASH memory set or one FLASH memory can be fetched from the movable panel as a whole or individually to connect to USB interfaces of computer. Functions provided by the digital car audio are accorded with custom of use by most drivers.

Description

Multi-disc type digital-code automobile sound equipment

Technical field

What the present invention relates to is digital-code automobile sound equipment, especially a kind of multi-disc type digital-code automobile sound equipment.

Background technology

At present, along with constantly popularizing of digital product, digital product also begins to enter automotive field, most representative is exactly the MP3 product, existing various MP3 products use on automobile, as: magnetic tape type vehicle mounted MP 3 audio converter, FM vehicle mounted MP 3 transmitter, cassette tape+USB flash disk MP3 player, CD+U dish MP3 player, MP3 hard disk automobile jukeboxs etc. are several, because magnetic tape type vehicle mounted MP 3 audio converter and FM vehicle mounted MP 3 transmitter are by stereo magnetic head conversion of two pass and frequency modulation emission, the mode that receives, the music of MP3 player memory storage is sent into the automobile player to be play, because conversion, the loss that receives and cause tonequality general is a kind of elementary substitute products; Cassette tape+USB flash disk MP3 player and CD+U dish MP3 player are on the basis of cassette recorder or CD player, increased the interface of MP3 playing circuit and USB flash disk, SD card (compatible mmc card), when memory discs such as insertion USB flash disk, the MP3 playing circuit reads the MP3 music from memory disc and plays, because without changing or launching and directly amplification output, so tonequality is fine, can be near the result of broadcast of CD, but storage mediums such as USB flash disk are inserted in the structure of outside, cause USB flash disk to damage easily, and institute's song of depositing is limited, selected songs are also inconvenient, belongs to transitional product; MP3 hard disk automobile jukebox then is the storage medium of large buffer memory portable hard drive as player, use front panel controller or Digiplex, work out playing list, management document, portable hard drive is generally 20G-40G, and capacity is very big, generally can deposit the first song of 5000-10000, but the function of MP3 hard disk automobile jukebox is numerous and diverse, the price height is difficult for popularizing (problem that in fact also has shock-proof effect), uses also inconvenient in the running car; In fact, the production development of automobile player till now, the most the driver to accept and be popular be DVD multidisc CD player product, the DVD multidisc machine is generally the 6-10 dish, be fixed in the luggage case, the CD video disc is packed in last property of driving, has removed use single dish CD player from, in driving, often change the inconvenience of video disc, the driver can select wherein any a dishful of broadcast, the traffic safety that do not influence again easy and simple to handle according to the needs of oneself under steam, but, if as using the DVD multidisc CD player, appreciate the MP3 music, present vehicle mounted MP 3 player all can't be accomplished, and design a kind of multi-disc type digital-code automobile sound equipment, just can address this problem well.

Summary of the invention

Purpose of the present invention just provides a kind of digital-code automobile sound equipment, especially a kind of multi-disc type digital-code automobile sound equipment.This multi-disc type digital-code automobile sound equipment, comprise: two parts of main frame and drop front, main frame is by a kind of composition the in radio reception module, external antenna, USB interface, SD interface (compatible mmc card), audio input jack, audio power amplifying circuit, LF power amplifier and CD drive, tape movement, the portable hard drive; Drop front is by central processing unit and MP3 decoding device, usb hub, USB interface, audio output circuit, audio output jack, panel operating key group, display output circuit, display screen, compositions such as FLASH memory set, it is characterized in that: main frame and drop front two parts for breaking, between have connector to connect, be used for Data transmission be connected power supply, the small panel of host machine part and drop front are partly formed a complete automobile audio panel, on the small panel of main frame, be provided with USB interface, SD interface (compatible mmc card) and audio input jack, also can the fixing disc driver in the main frame, the tape movement, a kind of in the portable hard drive as source of sound, in the drop front part central processing unit is arranged, MP3 decoding device and FLASH memory set, numerical key by panel operating key group, just can be as using the DVD multidisc CD player, select corresponding FLASH storer, play the MP3 music in this FLASH storer, have on the drop front and can connect USB interface of computer, FLASH memory set and FLASH storer also can wholely or single take out in drop front, directly are connected with USB interface of computer.

The design concept of multi-disc type digital-code automobile sound equipment of the present invention is: main frame and drop front two parts for breaking, between have connector to connect, be used for Data transmission be connected power supply, the panel of host machine part shared position on the panel of whole automobile audio is less, partly form a complete automobile audio panel with drop front, formed a personal-machine interactive interface by panel operating key group and associated components, on the small panel of main frame, be provided with USB interface, SD interface (compatible mmc card), audio input jack, SD interface by USB interface and compatible mmc card can insert storage mediums such as USB flash disk, read the music on the storage medium, also the sound signal of exporting on the music source such as MP3 player can be imported by audio input jack, by the audio power amplifying circuit in the main frame, LF power amplifier promotes the internal loudspeaker system and listens to, also can the fixing disc driver in the main frame, the tape movement, a kind of in the portable hard drive as source of sound, by the operating key on the panel, central processing unit is controlled, play CD, tape, the music of MP3 format, to increase the source of sound kind of automobile audio, allow the many a kind of selections of user; The drop front part is controlled the work of each parts by central processing unit and special software, deliver to the decoding that the MP3 decoding device carries out the MP3 data after data in the storage medium are read, and the various instructions of counter plate operating key group, information is handled, exchange, various information are driven display screen work by display output circuit, take out after data are decoded by the MP3 decoding device from the FLASH memory set, deliver to the interior audio power amplifying circuit of main frame through digital-to-analog conversion audio output circuit, LF power amplifier promotes the internal loudspeaker system and listens to, each port of usb hub, be connected to the storer from FLASH-1 to FLASH-N in the FLASH memory set, can store the MP3 music (relevant) about 20 head in each FLASH storer with the size of FLASH storer and mp3 file, 1-N numerical key by panel operating key group just can be as using the DVD multidisc CD player to select the CD video disc, select corresponding FLASH storer, when using single mass storage, corresponding document built-in in the selection memory presss from both sides, play the MP3 music in this FLASH storer or the file, and can go up a head, next operation, its function is identical with DVD multidisc CD player, be connected with computing machine by the USB interface on the drop front, just can duplicate the file in the FLASH memory set with computing machine, paste, operations such as deletion, the FLASH memory set can also wholely or single be operated in drop front with the FLASH storer direct the connection with USB interface of computer of taking-up, there is the coin shape lithium battery inside of drop front, at ordinary times by the direct supply on the automobile, the storage battery charging, can also work as the MP3 player when taking off drop front and use, by the external earphone listoning music of audio output jack.For the user of automobile audio provides convenience.

Multi-disc type digital-code automobile sound equipment of the present invention is reasonable in design, simple in structure, the outward appearance of small panel and latch mechanism on drop front and the main frame, can be designed to various forms, drop front is patched conveniently, reliably, wherein, central processing unit and MP3 decoding device, usb hub can adopt the chip and the circuit of various models as required, the capacity of FLASH memory set and FLASH storer also can be selected for use as required, display output circuit, display screen can be selected LCD as required for use, VFD, all kinds and models such as OLED, audio-frequency power amplifier can use any amplifier circuit and device to form, its circuit structure form also can be varied, generally by volume control circuit, tone control, reverberation, composition such as frequency equalization circuit and power amplification circuit, can regulate volume and high low pitch according to hearer's needs, frequency characteristic and even reverberation effect, because power amplifier has enough undistorted output powers, so, can in car, reach effect on the spot in person.

Among the present invention, software configuration and hardware are corresponding, each hardware components all has corresponding software code, realize various functions by software, hardware, finish various operations by instruction, software generally comprises: primary control program, file system, MP3 decoding, audio conversion, demonstration, storage medium management, resources of chip control, mobile storage agreement, usb data transmission, public module management etc., can adopt different software according to different chips, can use different software languages to write according to the needs of software.

In the textural association of multi-disc type digital-code automobile sound equipment of the present invention, CD drive, tape movement, portable hard drive can be selected for use as required, can not install yet, the radio reception module can also adopt the mode that is integrated in the drop front, as need be by the data of CD drive or portable hard drive output video form, watch video content, host machine part can be installed video decode, D/A conversion, the video drive output circuit is used for being connected video display with video output interface, is provided at the function of video frequency programs such as watching VCD, DVD in the car.

The principle of work of multi-disc type digital-code automobile sound equipment of the present invention is provided in detail by the following drawings and embodiment.

Description of drawings

Fig. 1 is the fundamental diagram of multi-disc type digital-code automobile sound equipment embodiment.

Fig. 2 is the fundamental diagram of multi-disc type digital-code automobile sound equipment second embodiment.

Fig. 3 is the fundamental diagram of multi-disc type digital-code automobile sound equipment the 3rd embodiment.

Fig. 4 is the fundamental diagram that multi-disc type digital-code automobile sound equipment increases the video playback part.

Among the figure: 1, main frame 2, drop front 3, central processing unit and MP3 decoding device 4, audio frequency output 5, USB interface 6, audio frequency output socket 7, FLASH memory set 8, FLASH-N storer 9, FLASH-1 storer 10, display screen 11, usb hub 12, show output 13, panel operating key 14, USB interface 5, radio reception module 16, external antenna 17, portable hard drive 18, SD interface 19, power amplifier 20, set of speakers 21 before in the car, back set of speakers 22 in the car, audio input jack 23, woofer 24 in the car, low-frequency power amplifier 25, CD drive output 26, tape movement output 27, movable FLASH storer 28, interface circuit 29, FLASH chip 30, serial ports or parallel port 31, FLASH storer 32, video display screen 33, video output 34, decoding circuit 35, the D/A change-over circuit

Embodiment

In Fig. 1, main frame (1) is connected by latch mechanism with drop front (2), between the connector Data transmission is arranged and is connected power supply, the panel of main frame (1) part and drop front (2) part are formed a complete automobile audio panel, formed a personal-machine interactive interface by panel operating key group (13) and associated components, the various instructions of counter plate operating key (13) operation and various information drive display screen (10) work by showing output (12), USB interface (5) is arranged on the drop front (2), being used for drop front (2) is connected with computing machine and duplicates, paste, operations such as deletion, audio frequency output socket (6) can insert the earphone listoning music; FLASH memory set (7) in the drop front (2) is made up of to FLASH-N storer (8) FLASH-1 storer (9), 1-N numerical key by panel operating key (13) group just can be as using the DVD multidisc CD player to select the CD video disc, select corresponding FLASH-1 storer (9) to FLASH-N storer (8), the MP3 music data of selected FLASH store memory storage, by delivering to central processing unit and MP3 decoding device (3) is handled in the corresponding port of usb hub (11), after decoding by the MP3 decoding device, deliver to the interior power amplifier (19) of main frame (1) through digital-to-analog conversion audio frequency output (4), set of speakers (20) before low-frequency power amplifier (24) promotes in the car, the internal loudspeaker system that woofer (23) is formed in back set of speakers (21) and the car in the car is listened to, on the small panel of main frame (1), be provided with USB interface (14), SD interface (18), audio input jack (22), SD interface (18) by USB interface (14) and compatible mmc card can insert storage mediums such as USB flash disk, reads music on the storage medium by central processing unit and MP3 decoding device (3); The interface that external antenna (16) are arranged on radio reception module (15) shell is arranged in the main frame (1), also can the fixing disc driver, a kind of in the tape movement, hard disk as source of sound, by CD drive output (25), tape movement output (26), data are delivered to central processing unit to portable hard drive (17) and MP3 decoding device (3) is handled, and plays the music of program of radio station, CD, tape, MP3 format by the panel operating key (13) on the operant activity panel (2); Also the sound signal of exporting on the music source such as MP3 player can be imported by the audio input jack (22) on main frame (1) small panel, be play-overed by power amplifier (19), low-frequency power amplifier (24) in the main frame (1).

In the embodiment shown in Figure 2, in drop front (2), adopt jumbo movable FLASH storer (27) as storage medium, movable FLASH storer (27) is made up of interface circuit (28), FLASH chip (29), by serial ports or parallel port (30) and central processing unit and MP3 decoding device (3) swap data, 1-N numerical key by panel operating key (13) group just can be as using the DVD multidisc CD player to select the CD video disc, select the built-in corresponding document folder in FLASH chip (29) lining, play the MP3 music in this document folder, this function is realized by software; Movable FLASH storer (27) can take out in drop front (2), is connected with computing machine and carries out various data manipulations, and is easy to carry.

In the embodiment shown in fig. 3, in drop front (2), adopt high capacity FLASH storer (30) as storage medium, with central processing unit and MP3 decoding device (3) swap data, 1-N numerical key by panel operating key (13) group just can be as using the DVD multidisc CD player to select the CD video disc, select the built-in corresponding document folder in FLASH storer (30) lining, play the MP3 music in this document folder, this function is realized by software; By the USB interface (5) on the drop front (2), be connected with computing machine and carry out various data manipulations.

In the embodiment of increase video playback part shown in Figure 4, needing fixing disc driver or hard disk is data source, the data of output video form, central processing unit and MP3 decoding device (3) that data are delivered in the drop front (2) are handled, video decode circuit (34) is installed in main frame (1), D/A change-over circuit (35), drive external video display screen (32) work by video output (33), the sound signal of D/A change-over circuit (35) output is delivered to power amplifier (19) through audio frequency output (4) and is promoted speaker system, also can insert earphone by audio frequency output socket (6) listens to, by this embodiment, just can watch VCD in the car for above three kinds of multi-disc type digital-code automobile sound equipments are increased in, the function of video frequency programs such as DVD.

Claims

1. multi-disc type digital-code automobile sound equipment, be made up of main frame and two parts of drop front, host machine part is by a kind of composition the in radio reception module, external antenna, USB interface, SD interface, audio input jack, audio power amplifying circuit, LF power amplifier and CD drive, tape movement, the portable hard drive; The drop front part is by central processing unit and MP3 decoding device, usb hub, USB interface, audio output circuit, audio output jack, panel operating key group, display output circuit, display screen, the FLASH memory set is formed, it is characterized in that: main frame and drop front are divided into two parts, between have connector to connect, be used for Data transmission be connected power supply, the small panel of host machine part and drop front are partly formed a complete automobile audio panel, on the small panel of main frame, be provided with USB interface, SD interface and audio input jack, be used for inserting storage medium, read the music on the storage medium; The sound signal of exporting on the music source is imported by audio input jack, promoted the internal loudspeaker system by the audio power amplifying circuit in the main frame, LF power amplifier and listen to; In the drop front part central processing unit, MP3 decoding device and FLASH memory set are arranged, the radio reception module is integrated in the drop front; Use the FLASH storer, or built-in file takes replaced C D video disc in the single mass storage, 1-N numerical key by Selection Floater operating key group, come the storer from FLASH-1 to FLASH-N in the corresponding selection machine, or built-in corresponding 1-N file in the single mass storage, the external memorizer that connects by interface on the panel, play the music file in this FLASH storer or the file, and a last head, next, the operation of audio, its function is identical with the video disc that uses DVD multidisc CD player to select to play corresponding sequence number; Audio output jack is arranged on the drop front and be connected USB interface of computer, FLASH memory set and FLASH storer can wholely or single take out in drop front, directly are connected with USB interface of computer.

2. multi-disc type digital-code automobile sound equipment according to claim 1, it is characterized in that: the selection numerical key of the operating key group on the FLASH storer in the FLASH memory set and the multi-disc type digital-code automobile sound equipment panel is corresponding one by one, by selecting numerical key to allow corresponding FLASH storer start working, play the music that is kept in this FLASH storer.

3. multi-disc type digital-code automobile sound equipment according to claim 1, it is characterized in that: its software configuration and hardware are corresponding, when using single mass storage, by selecting numerical key to start working, play the music that is kept in this document folder by corresponding file in the mass storage.

4. multi-disc type digital-code automobile sound equipment according to claim 1 is characterized in that: the capacity of FLASH memory set and FLASH storer is selected for use as required.