CN201576460U

CN201576460U - Portable medium player

Info

Publication number: CN201576460U
Application number: CN2009202842070U
Authority: CN
Inventors: 徐龙; 陈毛安
Original assignee: Jiangsu Hepu Technology Co Ltd
Current assignee: Jiangsu Hepu Technology Co Ltd
Priority date: 2009-12-03
Filing date: 2009-12-03
Publication date: 2010-09-08
Anticipated expiration: 2019-12-03

Abstract

The utility model discloses a portable medium player, which comprises a CPU processor; the periphery of the CPU processor is respectively connected with a debugging circuit, a loudspeaker circuit, a storage circuit, a USB circuit, a LCD circuit and a power supply circuit; the debugging circuit is used for debugging the CPU; the loudspeaker circuit is used for amplifying and outputting audio signal; the LCD circuit is used for displaying interface and figure image information; and the USB circuit is a data transmission interface. The portable medium player of the utility model achieves the following advantages: 1, single chip scheme is applied, the peripheral equipments number is reduced, and the product with small volume and low cost can be developed; 2, the player can perform multi-format coding/decoding to the audio signal; 3, the player can perform multi-format coding/decoding to the video signal; 4, the player can play and process the popular audio and video files of various formats.

Description

A kind of portable electronic device

Technical field

The utility model relates to a kind of multimedia video playing device, particularly can realize a kind of portable electronic device that multi-functional audio frequency and video is handled and play.

Background technology

The iPod MP3 music player of releasing along with Apple is after the world market starts the overbearing tide of selling fast, and the portable electronic device PMP that possesses audio-video playing function that came out in 2003 is considered to the next mobile entertainment device that is worth expectation.

PMP does not specifically define on function, though many manufacturers all are defined as multimedia player with it, but this series products has very big dirigibility in function aspect integrated, can also playing back music except the basic function of watching film, browsing pictures, even portioned product also has video record, online and digital camera functionality concurrently.PMP can pass through USB or 1394 bus transfer data, and quick-downloading audio-visual document is play in equipment, and possesses LCD screen, to satisfy mobile subscriber's audio-visual demand of playing stream media at any time.

For this reason, how to realize that a kind of low-power consumption, function are complete relatively, stable performance, the portable electronic device product of giving full play to the novelty of characteristics own become subject matter.

Summary of the invention

Goal of the invention: technical problem to be solved in the utility model is at the deficiencies in the prior art, and a kind of portable electronic device is provided.

Technical scheme: the utility model discloses a kind of portable electronic device, comprise the CPU processor, the power circuit that is connected with debug circuit, speaker circuit, memory circuit, USB circuit, LCD circuit respectively and is used to power in CPU processor periphery;

Described debug circuit is used to debug CPU;

Described speaker circuit is used for sound signal is amplified output;

Described LCD circuit is used for display interface and Figure and Image;

Described USB circuit is a data transmission interface.

In the utility model, preferably, described debug circuit is the JTAG debug circuit.

In the utility model, preferably, described CPU processor is connected with external device; Described external device comprises key input section and/or LED-backlit illumination section.

In the utility model, preferably, described CPU processor is connected with video output circuit, is used for video image is transferred to display device by video port, and described video output circuit comprises impedance matching circuit and the filter amplification circuit that is connected between CPU processor and the outside TV.

In the utility model, preferably, described CPU processor is connected with the camera circuit, is used for video image acquisition, gives the CPU processor with image data transmission.

In the utility model, preferably, described memory circuit comprises any one in NAND FLASH storer, TF card memory and the SDRAM storer.

In the utility model, preferably, described CPU processor is connected with the FM circuit, is used for receiving broadcast signal, and the signal of being received is passed to the CPU processor, and described FM circuit comprises FM frequency modulation module and antenna.

In the utility model, preferably, described CPU processor is connected with microphone circuit, is used to gather the sound signal of extraneous input.

In the utility model, preferably, described CPU processor is connected with head circuit, is used for audio signal output.

In the utility model, preferably, described power supply is direct supply or lithium ion battery.

Beneficial effect: portable electronic device described in the utility model has following advantage: 1, adopt the single-chip solution, peripherals is few, can develop the product that volume is little, cost is low; 2, can carry out the encoding and decoding of multiple forms such as PCM, ADPCM, AAC, MP3, SPEEX to sound signal; 3, can carry out MJPEG, MPEG4, H.264 wait the encoding and decoding of multiple form vision signal; 4, can play and handle the audio frequency and video file of multiple popular format on the market, as the file of forms such as 3GP, MKV, FLV, WMV, ASF, 3GP, MPG, DAT, MP4.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is done further to specify, above-mentioned and/or otherwise advantage of the present utility model will become apparent.

Fig. 1 is the composition synoptic diagram of the utility model portable electronic device.

Fig. 2 is the FM circuit theory synoptic diagram of the utility model portable electronic device.

Fig. 3 is the TVOUT circuit theory synoptic diagram of the utility model portable electronic device.

Embodiment:

As shown in Figure 1, the utility model discloses a kind of portable electronic device of novelty, comprise a HPC3121 CPU processor 13, around the CPU processor, be connected with speaker circuit 3, head circuit 12, microphone circuit 10, camera (CAMERA) circuit 5, debug circuit 1, LCD circuit 7, external device 2 (key input part, LED-backlit display part), FM circuit 9, TVOUT circuit 4, USB circuit 6, memory circuit 11 and power circuit 8 respectively based on the ARCVDO structure.Described memory circuit comprises NAND FLASH storer, TF card memory and SDRAM storer.Described debug circuit is JTAG (Joint Test Action Group) debug circuit.Described power supply is direct supply or lithium ion battery.Described external device comprises button and LED.All circuit of portable electronic device recited above place in the casing.

In the present embodiment, the principle of work of portable electronic device is as follows:

1.CPU the 13rd, the control core of system is controlled total system.

2. memory circuit 11 comprises NAND FLASH storer, TF card memory and SDRAM storer.

3.CAMERA circuit 5 is responsible for video image acquisition, gives CPU with image data transmission; After CPU handles view data, it is shown or be stored in the storage medium.

4.LCD circuit 7 is responsible for display interface and relational graph image information.

5. Figure 2 shows that the schematic diagram of FM circuit, principle of work is as follows: broadcast message passes to FM module 15 after being received by antenna 14; FM module 15 is carried out broadcast message down coversion, intermediate frequency are amplified, after the AD conversion, is passed to DSP and carry out FM and separate and be in harmonious proportion voice data and handle, and the voice data after the processing becomes the sound signal of simulation after by the DA conversion; Sound signal is delivered to CPU 13 and handles, and is play by CPU 13 control loudspeaker circuit 3 or head circuit 12 at last.

6. Figure 3 shows that the schematic diagram of TVOUT, principle of work is as follows: CPU 13 has the TVOUT function, the analog video signal that CPU 13 is exported is transferred to TV 18 or other display equipment via video port after handling through 75 ohms impedance match circuit 16 and filter amplification circuit 17.

7. by the JTAG debugging interface of JTAG debug circuit 1, can debug CPU 13.

8. external device 2 comprises button, LED etc., can customize accordingly as required.

9. power unit 8 can charge to battery for all circuit provide operation needed various power supplys simultaneously, and the input power supply of power unit is direct supply or lithium ion battery.

10.USB the high speed data transfer that circuit 6 is responsible between player and the PC, data packets for transmission is drawn together audio file and video file etc.

In the circuit of described portable electronic device, it is the HPC3121 chip of Jiangsu and general Science and Technology Ltd. that CPU 13 selects model for use, and the said firm's chip discloses for sale; The HPC3121 chip is based on the cpu chip of ARCVDO structure, and ARCVDO is 32 risc processors of a high-performance, and has 128 SIMD multimedia assisted instructions, is applicable to that Video CODEC uses; ARCVDO is made of 32 risc processors and 128 SIMD vector processors; This chip is 193PIN BGA encapsulation; This chip has AD, DA function, can realize the digital-to-analogue analog to digital conversion to audio-video signal; Has the JTAG debug function; Support USB OTG, SD card agreement, and IIS interface, spi bus, iic bus and serial ports are arranged; Support external connection keyboard, SDRAM and NAND FLASH; Can carry out the encoding and decoding of multiple forms such as PCM, ADPCM, AAC, MP3, SPEEX to sound signal, vision signal is carried out MJPEG, MPEG4, H.264 waited the encoding and decoding of multiple form; Has the TVOUT output function; Has synchronous RF MODEM control interface; Support multiple Starting mode such as SPI FLASH, NAND FLASH, USB, serial ports.This chip has the advantages that cost is low, function is complete, power consumption is little.

It is FM_5767 that the FM circuit module is partly selected model for use, has adopted the scheme of the TEA5767 of PHILIPS company; It is the TPA2005 of TI company that audio-frequency power amplifier is selected model for use; It is the OV7670 of OmniVision company that CAMERA selects model for use.

Present embodiment adopts the single-chip solution, and peripherals is few, can develop the product that volume is little, cost is low, performance is good.

The utility model provides a kind of thinking and method of portable electronic device; the method and the approach of this technical scheme of specific implementation are a lot; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.The all available prior art of each ingredient not clear and definite in the present embodiment is realized.

Claims

1. a portable electronic device is characterized in that, comprises the CPU processor, the power circuit that is connected with debug circuit, speaker circuit, memory circuit, USB circuit, LCD circuit respectively and is used to power in CPU processor periphery;

Described debug circuit is used to debug CPU;

Described speaker circuit is used for sound signal is amplified output;

Described LCD circuit is used for display interface and Figure and Image;

Described USB circuit is a data transmission interface.

2. a kind of portable electronic device according to claim 1 is characterized in that, described debug circuit is the JTAG debug circuit.

3. a kind of portable electronic device according to claim 1 is characterized in that, described CPU processor is connected with external device; Described external device comprises key input section and/or LED-backlit illumination section.

4. a kind of portable electronic device according to claim 1 is characterized in that, described CPU processor is connected with video output circuit, is used for video image is transferred to display device by video port;

Described video output circuit comprises impedance matching circuit and the filter amplification circuit that is connected between CPU processor and the outside TV.

5. a kind of portable electronic device according to claim 1 is characterized in that, described CPU processor is connected with the camera circuit, is used for video image acquisition, gives the CPU processor with image data transmission.

6. a kind of portable electronic device according to claim 1 is characterized in that, described memory circuit comprises NAND FLASH storer, TF card memory and SDRAM storer.

7. a kind of portable electronic device according to claim 1 is characterized in that, described CPU processor is connected with the FM circuit, is used for receiving broadcast signal, and the signal of being received is passed to the CPU processor;

Described FM circuit comprises FM frequency modulation module and antenna.

8. a kind of portable electronic device according to claim 1 is characterized in that, described CPU processor is connected with microphone circuit, is used to gather the sound signal of extraneous input.

9. a kind of portable electronic device according to claim 1 is characterized in that, described CPU processor is connected with head circuit, is used for audio signal output.

10. a kind of portable electronic device according to claim 1 is characterized in that, described power supply is direct supply or lithium ion battery.