CN201213071Y - Vehicle-mounted intelligent media player - Google Patents

Abstract

The utility model discloses a vehicle digital intelligent player. The circuit of the player mainly comprises a power supply module, a USB interface controller, an FM radiogram module, an embedded type microprocessor, an LCD display screen, a keyboard, a digital audio decoder, a built-in FLASH memorizer, a DA conversion controller, a power amplifier and an automobile sound interface. The utility model can play and edit song files in the built-in FLASH memorizer, and also can play song files in an exterior USB memory device connected with the USB interface controller, can conveniently realize mutual copy of files in a USB disk and the built-in memorizer, completely cancel an easily damaged mechanical laser head of a traditional disk, greatly improves the shock resistance and the service life of a vehicle host computer, saves the use expense, avoids the defects that the tone can not be ensured when music in the exterior memorizer is played, and the interface between the exterior memorizer and the host computer is easily damaged, facilitates the file management and greatly expands the seeing and hearing enjoyment of people.

Description

The vehicle intelligent media player

Technical field

The utility model belongs to the on-vehicle host equipment technical field, relates to a kind of vehicle intelligent media player of built-in FLASH storer.

Background technology

The vehicle-mounted playback equipment in this area mainly contains three kinds at present.A kind of is vehicle-mounted CD main frame, and its shortcoming is up-to-date expensive and difficult purchase of song band (CD dish); The song capacity of every CD dish is quite limited; The dish that frequently changes that the restriction of capacity causes is a big potential safety hazard in driving; A large amount of CD dishes can take many spaces of automotive storage case; The CD dish is difficult for preserving and damaging easily; Usually cause to play and interrupt by the vibrations that produce in the running car.Another kind is USB flash disk/plug-type on-vehicle host of SD card, and its shortcoming is no internal storage device, can only play the music file in extrapolation USB flash disk/SD card; Main frame must pass through USB interface when switching song, and it is long to expend time in; Outstanding extrapolation memory device influences the overall aesthetics of vehicle console, and the existence of this equipment simultaneously causes the inconvenience of driver's operation, and traffic safety has been buried major hidden danger; Operational control unit is simple and crude, simply selects the song key can not satisfy the user and searches the needs of oneself liking song fast; USB flash disk/SD is stuck in and is subject to vibrations under the vehicle environment, and serviceable life is not long.The third is the vehicle-mounted CD main frame that can insert USB flash disk/SD card, can play CD in or the music file in extrapolation USB flash disk/SD card, this playback equipment has both outside the advantage of above two kinds of main frames at the same time, also possesses the shortcoming of above two kinds of main frames simultaneously.

Summary of the invention

At the problem that existing vehicle-mounted playback equipment exists, the utility model proposes a kind of vehicle intelligent media player that can a large amount of music files of built-in storage.Provide a kind of novel structure, easy to use, can effectively utilize the online music resource and greatly satisfy the vehicle intelligent media player that demand is listened in the high-quality broadcast of user.

The utility model comprises the USB patchcord of playing a main frame and a standard mouth commentaries on classics Mini mouth.It is indoor that the broadcast main frame is installed in car steering, the built-in FLASH storer, and song is stored in the FLASH storer.Play main frame and connect USB flash disk by the USB patchcord, the broadcast main frame both can have been play the song on the external USB flash disk, also can play the song on the internal memory, and support the mutual copy between external USB flash disk and the built-in storage.

The player panel comprises LCD display, Mini USB interface, button three parts composition, and panel construction as shown in Figure 1.

This player structure comprises as shown in Figure 2:

1, power module: comprise power supply input, rectification, output, the output voltage that power module provides comprises 3.3V, 5V, 9V voltage, supplies with control decoder module, USB interface and radio receiver module respectively and uses;

2, FM radio reception module: realize the FM function of radio receiver, support digital tuning, have automatic channel search, deposit the platform function, can preserve 40 platforms at most;

3, USB controller: support USB 2.0 interfaces comprehensively, support the OTG function, the vehicle-mounted media player both can be used as USB device and had been connected to PC, also can be used as the USB main equipment and imported data from equipment such as USB flash disks;

4, embedded microprocessor: be responsible for the overall control of media player;

5, LCD display: adopt the LCD display of dot matrix, support Chinese to show, be used to show the running status and the operational factor of vehicle-mounted media player;

6, keyboard: accept user's input, keyboard can be divided into 3 parts: power key, the switch of controls playing device; Operating key, the operation of controls playing device; Numerical key, the song that will play by the quick selection of numerical key.

7, power amplifier: drive vehicle audio, playing back music;

8, digital audio decoding device: realize decoding, support MP3 format and WMA form to digital media file;

9, DA switching controller: accept the decoded data-signal of digital audio decoding device, convert simulating signal to, output to power amplifier;

10, built-in FLASH storer: preserve song files;

11, automobile audio interface: the interface with automobile audio is provided.

This player has three kinds of mode of operations: play mode, radio-receiving mode, document management mode.

1, play mode: player is operated in play mode following time, embedded microprocessor reads song files from the built-in FLASH storer, being sent to the digital audio decoding device decodes, decoded data are sent to the DA switching controller, convert simulating signal to, drive the vehicle audio playing back music by power amplifier at last;

2, radio-receiving mode: player is operated in radio-receiving mode following time, embedded microprocessor is by the digital tuning part in the SPI interface control radio, set the radio reception frequency, radio receiver module receives the FM FM signal by car antenna, drives vehicle audio by power amplifier and play broadcasting after demodulation;

3, document management mode: player is operated in document management mode following time, embedded microprocessor links to each other with external USB flash disk by the USB controller, support the FAT32 file system, realize the document copying between built-in FLASH storer and the external USB flash disk, and the file delete function.

Compared with prior art, the advantage that has of the utility model vehicle intelligent media player has:

(1) since the support of this player to the browsing of file, delete, operation such as copy, can arbitrarily manage your music file:

(2) internet is highly developed at present, and obtaining of music song file is quite convenient, extensive, can be worried for can not find the CD that oneself likes;

(3) product adopts the inorganic core design, without any mechanical wear and have good seismic resistance, is particularly suitable for vehicle-mountedly, compares the in-vehicle player of CD and USB flash disk formula, and physical life is longer;

(4) owing to carry built-in storage, avoid and to play by USB flash disk, influence overall appearance and U mouth and shake the bad shortcoming of fragile result of broadcast.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is vehicle intelligent media player panel figure.

Fig. 2 is a vehicle intelligent media player structural drawing.

1. power modules among Fig. 2,2.FM radio reception module, 3.USB interface controller, 4. embedded microprocessor, 5.LCD display screen, 6. keyboard, 7. power amplifier, 8. digital audio decoding device, 9.DA switching controller, 10. built-in FLASH storer, 11. automobile audio interfaces.

Embodiment:

Built-in FLASH storage chip in the utility model player is stored digital audio file in the FLASH chip, player can be play-overed the music of storing among the FLASH.The FLASH storage chip is controlled by embedded microprocessor, and the FAT32 file system has been set up in its inside, realizes the management to file.

The utility model has been realized the complete file management function on the basis of built-in storage, comprising:

One, format

Built-in FLASH must advanced row formatization before storage file.The format of FLASH storer is controlled by embedded microprocessor, in formative process, at first according to the definition of FAT32 file system, writes Main Boot Record (MBR) in first page of FLASH, creates file allocation table and blank master catalogue then.

Two, document copying

The utility model player for supporting is held in realizes between built-in FLASH storage chip and the circumscribed USB storage equipment that file copies mutually, and has realized the function of key copy.

Circumscribed USB storage equipment is connected to player by usb interface controller, when file copies built-in FALSH storage chip to from circumscribed USB storage equipment, embedded microprocessor judges that at first what will copy is file or catalogue, if copy is file, then in the built-in FLASH storage chip, create new file, read source file in the circumscribed USB storage equipment by USB interface then, write the built-in FLASH storer; If copy is catalogue, then in the built-in FLASH storage chip, create new catalogue, travel through the source directory in the circumscribed USB storage equipment then, copy the target directory of file in the built-in FLASH storage chip in the source directory successively.

When file copies circumscribed USB storage equipment to from the built-in FLASH storer, embedded microprocessor judges that at first what will copy is file or catalogue, if being file then in circumscribed USB storage equipment, creating new file of copy, read the source file in the built-in FLASH storer, write circumscribed USB storage equipment by USB interface; If copy is catalogue, create new catalogue in circumscribed USB storage equipment, travel through the source directory in the built-in FLASH storage chip then, copy the target directory of file in the circumscribed USB storage equipment in the source directory successively.

Three, browsing file

The utility model player enters the browsing file interface by mode switching key, embedded microprocessor at first reads All Files folder and the file under the root directory in the FLASH storer, by LCD display file information, the user can pass through key browser document or file up and down, if what choose is file, can between the superior and the subordinate's catalogue, switch by right and left key.

Four, file delete

The user selects the file that will delete by key up and down, select files by the deletion of delete key notice embedded microprocessor, embedded microprocessor is the selected docuterm of deletion in the catalogue of FAT32 at first, and the shared sector mark of the file that will delete in file allocation table is use then.

Claims (2)

1, a kind of indoor vehicle intelligent media player of car steering that is installed in is characterized in that vehicle intelligent media player panel is provided with LCD display (5), button (6) and USB interface (3).

2, vehicle intelligent media player according to claim 1 is characterized in that vehicle intelligent media player internal circuit is made up of power module (1), FM radio reception module (2), USB interface (3), embedded microprocessor (4), digital audio decoding device (8) and built-in FLASH storer (10).Its digital audio decoding device (8) links to each other with D/A switching controller (9), and radio receiver module (2) links to each other with power amplifier (7) with D/A switching controller (9), and power amplifier (7) passes to stereo set by automobile audio interface (11) with sound signal.

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