CN2633660Y

CN2633660Y - Vehicle carried MP3 and DVD multifunction video-audio player

Info

Publication number: CN2633660Y
Application number: CN 03207337
Authority: CN
Inventors: 周凯
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-16
Filing date: 2003-08-16
Publication date: 2004-08-18
Anticipated expiration: 2013-08-16

Abstract

A vehicle carried MP3 and DVD multifunction video-audio player belongs to video-audio device, wherein, one end of standard interface of USB is connected with a flash disk or a movable hard disk; the other end of the USB is connected with the main controlling chip; the chip reads file data and classifies the files according to postfixes; the classified files are respectively sent into corresponding decoding chips; and after being decoded, the digital audio signals are connected to the LCD display. The power supply can be got from the plug of the vehicle speaker and then provides power for digital radio circuit and main control chip through the power supply circuit; the audio signal output by the digital radio circuit is amplified by the power amplifier and is then output to the left and right tracks of the vehicle speaker. The utility model not only has the advantages of the prior three generations of vehicle video-audio systems, but also has the functions of MPS; the great downloading ability and the function of storing network video-audio files can greatly expand the video-audio space.

Description

The multi-functional DVD player of vehicle mounted MP 3 and DVD

1, technical field: the multi-functional DVD player of vehicle mounted MP 3 of the present utility model and DVD belongs to the audio and video equipment field, relates in particular to a kind of vehicle-mounted audio and video equipment.

2, background technology: vehicle-mounted audio and video equipment develops into present third generation radio receiver+CD player or VCD machine from first generation radio receiver, second generation radio receiver+cassette tape.In the 21st century of network informationization, existing vehicle-mounted audio and video equipment can not satisfy the higher needs of people to audio-visual aspect.MP3 can conveniently obtain outstanding advantages such as audio files with high tone quality, automatic network and CD disc record that it is equal to CD, now has been widely used on information such as mobile phone, walkman and the amusement electronic product, but also has been not used in MP3 player on the automobile.

3, summary of the invention: the purpose of this utility model is to propose a kind of use USB standard interface, the storage equipment that can external any this kind of tool interface such as the vehicle mounted MP 3 and the multi-functional DVD player of DVD of flash disk, portable hard drive etc.

The purpose of this utility model is achieved in that storage equipment such as the flash disk with USB standard interface one end and this kind of tool interface, connections such as portable hard drive, the other end inserts SPCA514 master control chip by 4 core USB bidirectional data lines, this chip reads flash disk, the file data of portable hard drive storage is also pressed file suffixes name MP3, CDA, DAT, DAT1, VOB, TXT classifies, wherein mp3 file is sent into the SPCA751MP3 decoding chip, the CDA file is sent into the CD decoding chip, respectively after the decoding, the D/A converter of digital audio and video signals incoming audio signal revolving die analog signal, after conversion, by the left and right acoustic channels that exports auto audio equipment after the power amplification circuit amplification to; DAT, DAT1, vob file are sent into CL484VCD decoding chip, SVCD decoding chip and ESS6028DVD decoding chip respectively, respectively after the decoding, digital audio and video signals inserts D/A converter, export the left and right acoustic channels of auto audio equipment again after power amplification circuit amplifies to, vision signal then inserts the video LCD display; The TXT file is sent into the text reading decoding chip, and after decoding, vision signal inserts the video LCD display.Localpower is obtained from the auto audio equipment plug, is respectively digital receiver circuit and SPCA514 master control chip provides power supply by power circuit.The sound signal of digital receiver circuit output exports the left and right acoustic channels of auto audio equipment to after power amplification circuit amplifies.From the radio reception of auto audio equipment front panel function key part control signal is sent into digital receiver circuit, with regard to its functions such as accent platform of may command.

Because carry out such scheme, the multi-functional DVD player of vehicle mounted MP 3 and DVD not only has outside first three advantage for vehicle-mounted audiovisual system, also has the MP3 function concurrently, the function of its mass download and storage network audio/video file can greatly be expanded people's audio-visual space.

4, description of drawings: concrete structure of the present utility model is provided by following drawings and Examples

Fig. 1 is the structured flowchart of vehicle mounted MP 3 and the multi-functional DVD player of DVD

Fig. 2 is the structured flowchart of the multi-functional DVD player simplified way 1 of vehicle mounted MP 3 and DVD

Fig. 3 is the structured flowchart of the multi-functional DVD player simplified way 2 of vehicle mounted MP 3 and DVD

5, the specific embodiment:

Legend: 1, auto audio equipment plug 2, power lead 3, power circuit 4, digital receiver circuit 5,4 core USB bidirectional data lines 6, USB standard interface 7, audio signal wire 8, power amplification circuit 9, master control chip 10, digital signal line 11, auto audio equipment front panel function key 12, D/A converter 13, LCD display 14, MP3 decoding chip 15, CD decoding chip 16, VCD decoding chip 17, SVCD decoding chip 18, DVD decoding chip 19, text reading decoding chip 20, video LCD display 21, video signal cable 22,12V audio-frequency power amplifier 23,7805C three terminal regulator 24, resistance 25, MP3 player 26, vehicle carried mobile phone charger 27, auto audio equipment

Embodiment 1: as shown in Figure 1, obtain 12V voltage from auto audio equipment plug 1, insert power circuit 3 by power lead 2, voltage is reduced to 3V and 5V voltage respectively, insert digital receiver circuit 4 and SPCA514 master control chip 9 by power lead 2 respectively by this circuit.The sound signal of digital receiver circuit 4 outputs is sent into power amplification circuit 8 and is amplified, and this power amplifier inserts the left and right acoustic channels of auto audio equipment plugs 1 by audio signal wire 7.From the radio reception part of auto audio equipment front panel function key 11 control signal is sent into digital receiver circuit 4, with the functions such as accent platform of control figure formula receiver circuit 4.USB standard interface 6 one ends can be connected with storage equipment such as flash disk, the portable hard drive etc. of this kind of tool interface, the other end inserts SPCA514 master control chip 9 by 4 core USB bidirectional data lines 5, and this chip is classified the file of flash disk, portable hard drive storage by following file type:

Be mp3 file, signal is inserted SPCA75 1MP3 decoding chip 14, after this chip decoding, digital audio and video signals is by the D/A converter 12 of digital signal line 10 incoming audio signal revolving die analog signals;

Be the CDA file, signal is inserted CD decoding chip 15, after this chip decoding, digital audio and video signals inserts D/A converter 12 by digital signal line 10;

Be the DAT file, signal is inserted CL484VCD decoding chip 16, after this chip decoding, digital audio and video signals inserts D/A converter by digital signal line 10, and vision signal inserts video LCD display 20 by video signal cable 21;

Be the DAT1 file, signal is inserted SVCD decoding chip 17, after this chip decoding, digital audio and video signals inserts D/A converter by digital signal line 10, and vision signal inserts video LCD display 20 by video signal cable 21;

Be vob file, signal is inserted ESS6028DVD decoding chip 18, after this chip decoding, digital audio and video signals inserts D/A converter by digital signal line 10, and vision signal inserts video LCD display 20 by video signal cable 21;

The above D/A converter 12 is connected with power amplification circuit 8 circuits.

Be the TXT file, signal is inserted text reading decoding chip 19, after this chip decoding, vision signal inserts video LCD display 20 by video signal cable 21.

More than all control signals all insert SPCA514 master control chips 9 by digital signal line 10 by auto audio equipment front panel function key 11.

Embodiment 2: as shown in Figure 2, insert 12V audio-frequency power amplifier 22 and 7805C three terminal regulators 23 by power lead 2 respectively by the 12V power supply of auto audio equipment plug 1 output, respectively as the two power supply.By power lead 2 positive pole is inserted resistance 24 after reducing to 5V voltage by 7805C three terminal regulator 23, the 3V positive source after resistance 24 secondary step-downs inserts the positive pole of MP3 player 25, and the negative pole of the negative pole of MP3 player 25 and aforementioned 12V power supply joins.The sound signal of MP3 player 25 inserts 12V audio-frequency power amplifier left and right acoustic channels by audio signal wire 7 and ground wire.During use, only need closing automobile sound equipment power supply, open the native system power supply and just can play the MP3 music.

Embodiment 3: as shown in Figure 3, the positive pole of vehicle carried mobile phone charger 26 is inserted resistance 24 by power lead 2,3V positive source after resistance 24 secondary step-downs inserts the positive pole of MP3 player 25, negative pole with vehicle carried mobile phone charger 26 passes through the negative pole that power lead 2 inserts MP3 players 25 again, is made for the power supply of MP3 player 25.Existing operating sound equipment of car panel has the circuit input jack, and MP3 can directly link to each other with auto audio equipment 27 with audio signal wire 7; No circuit input jack, can pull down main system of audio, the left and right sides voice band line and the ground wire of volume potentiometer is connected with the insert earphone plug.Utilize a switch that is of little use on the guidance panel, behind the repacking circuit, the conversion of the tape of control main system of audio, MP3, radio reception state prevents to have simultaneously two kinds of playback modes coexist to interfere with each other.

Claims

1, the multi-functional DVD player of a kind of vehicle mounted MP 3 and DVD, it is characterized in that: USB standard interface one end is connected with flash disk or portable hard drive, the other end inserts SPCA514 master control chip by 4 core USB bidirectional data lines, this chip respectively with the SPCA751MP3 decoding chip, the CD decoding chip, the CL484VCD decoding chip, the SVCD decoding chip, the ESS6028DVD decoding chip is connected with text reading decoding chip circuit, the SPCA751MP3 decoding chip, the CD decoding chip respectively with the D/A converter of sound signal revolving die analog signal, power amplification circuit, the left and right acoustic channels sequential line of auto audio equipment connects, the CL484VCD decoding chip, the SVCD decoding chip, the ESS6028DVD decoding chip respectively with the D/A converter of sound signal revolving die analog signal, power amplification circuit, the left and right acoustic channels of auto audio equipment is connected with video LCD display sequential line, the text reading decoding chip is connected with video LCD display circuit, the 12V voltage of obtaining from the auto audio equipment plug inserts power circuit, by this circuit step-down is 3V, the power supply of 5V inserts digital receiver circuit and SPCA514 master control chip respectively, digital receiver circuit and power amplification circuit, the left and right acoustic channels sequential line of auto audio equipment connects, and the control circuit of the radio reception part of auto audio equipment front panel function key is connected with digital receiver circuit circuit.

2, the multi-functional DVD player of vehicle mounted MP 3 as claimed in claim 1 and DVD, it is characterized in that: auto audio equipment plug 12V power supply is connected with the 7805C three terminal regulator with the 12V audio-frequency power amplifier respectively, 5V positive source after the step-down of 7805C three terminal regulator is connected with 150 Ω resistance, the resistance other end is connected with the positive pole of MP3 player, the negative pole of MP3 player is connected with the negative pole of auto audio equipment plug 12V power supply, and the MP3 player is connected with 12V audio-frequency power amplifier left and right acoustic channels circuit.

3, the multi-functional DVD player of vehicle mounted MP 3 as claimed in claim 1 and DVD, it is characterized in that: the positive pole of vehicle carried mobile phone charger is connected with 150 Ω resistance, the resistance other end is connected with the positive pole of MP3 player, the negative pole of vehicle carried mobile phone charger is connected with the negative pole of MP3 player, and MP3 links to each other with operating sound equipment of car panel circuit input jack circuit.

4, the multi-functional DVD player of vehicle mounted MP 3 as claimed in claim 1 and DVD, it is characterized in that: the positive pole of vehicle carried mobile phone charger is connected with 150 Ω resistance, the resistance other end is connected with the positive pole of MP3 player, the negative pole of vehicle carried mobile phone charger is connected with the negative pole of MP3 player, and the left and right sides voice band line of volume potentiometer and ground wire are connected with the insert earphone plug.