CN2702551Y

CN2702551Y - Digital media player

Info

Publication number: CN2702551Y
Application number: CNU2004200452937U
Authority: CN
Inventors: 王成群; 徐英杰
Original assignee: SHENZHEN CONTEL ELECTRONICS TECHNOLOGY Co Ltd
Current assignee: SHENZHEN CONTEL ELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2004-04-26
Filing date: 2004-04-26
Publication date: 2005-05-25
Anticipated expiration: 2014-04-26

Abstract

The utility model relates to a digital media player. In order to solve the problem of single medium format received by the media player and limited range of application, the utility model provides a digital media player which can connect with various input devices and support various medium formats, comprising an input interface, an output interface and an MPEG decoder. The input interface at least comprises a wireless local area network interface and the decoder is MPEG-1, MPEG-2 or MPEG-4 decoder, while the output interface at least comprises a CVBS interface, a DVI interface, etc. The digital media player of the utility model can be connected with PC, HUB, or Internet through LAN or WLAN so as to receive or download desired music, movies, etc. If the output interface is connected with the corresponding acoustics and display equipment, the digital media player can receive and process, and then broadcast corresponding audio and video signals in real time. The entire player has little volume, especially adapting to company and family.

Description

Digital media player

Technical field

The utility model relates to multimedia playing apparatus, more particularly, relates to a kind of digital media player that wired and wireless network transmission technology, compressed video decoder technology and simulation and digital output interface are integrated.

Background technology

Set-top box is a kind of exemplary media player in the prior art, it normally receives the video and audio signal that transmits through cable of cable TV by a cable TV interface, and the video and audio signal here generally is the digital signal of compressed encoding process; This signal is sent to decoder, de-compresses into digital video signal and digital audio and video signals; By corresponding D/A converting circuit digital video signal is reduced to analog video signal again, and digital audio and video signals is reduced to simulated audio signal; Delivering to television set (TV) at last plays.

The main effect of this set-top box is that the digital signal that cable of cable TV transmits is converted to the required analog signal of traditional analog television machine.Its input can only be connected with cable TV network, and the media formats that can receive is more single, can not play the picture, film or the music that are stored in computer or the server.When set-top box and cable of cable TV disconnect when being connected, just can not receive video and audio signal source again, also just can't play any information, so range of application is very limited.

The utility model content

Above-mentioned defective at existing set-top box, the utility model will solve the problem that media formats is more single, range of application is very limited that existing media player can only be connected with cable of cable TV, can receive, and a kind of digital media player that can be connected, can support multiple media formats with multiple external input device is provided.

The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of digital media player, the decoder that comprises microprocessor, input interface, output interface and be used for compressed video and audio signal are carried out decoding processing; Wherein also comprise the remote-control receiving circuit that is connected with described microprocessor, and the remote controller that can send remote signal to described remote-control receiving circuit; Wherein, described input interface comprises a wireless lan interfaces at least, and described decoder is MPEG-1, MPEG-2 or MPEG-4 decoder, and described output interface comprises a CVBS (composite video signal) output interface at least.

In digital media player described in the utility model, described input interface also comprises USB general-purpose interface, cable LAN interface, be used for from these three kinds of input interfaces of card reader of storage card reading of data one or more.

Described output interface also comprises one or more in DVI (digital video) interface, Y/C light tone separation interface, these three kinds of video output interfaces of YPbPr component output interface.Also comprise in 2 channel stereo output interfaces, digital audio optical fiber output interface, these three kinds of audio output interfaces of the coaxial output interface of digital audio one or more simultaneously.

In digital media player described in the utility model,, also comprise the control panel circuit that is connected with described microprocessor for the ease of also controlling under the situation of remote controller not having.

Integrated multiple input interface in the digital media player of the present utility model, particularly be provided with wireless lan interfaces, can receive the digital video signal of outside input by wireless mode, comprise VCD, DVD, DIVX, XVID digital video signal and CD, MP3, the WMA audio signal of MPEG-1, MPEG-2 and MPEG-4 form.Simultaneously, its multiple output interface can be used for to different equipment output audio and vision signal.Digital media player of the present utility model can connect PC by USB interface, also can connect PC or HUB (hub), also can further be connected to the Internet with browsing page or download audio frequency, video or image data by wired or wireless local area network (LAN); Its output interface is connected to corresponding sound equipment and display device, can receives, handle and play corresponding audio frequency and/or vision signal in real time.Whole player volume is small and exquisite, is particularly suitable for company and family and uses.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the theory diagram of the utility model digital media player;

Fig. 2 is the circuit block diagram of digital media player in preferred embodiment of the utility model;

Fig. 3 is the decomposition texture schematic diagram of digital media player in preferred embodiment of the utility model;

Fig. 4 is the rear board schematic diagram of digital media player shown in Fig. 3, wherein shows a plurality of input/output interfaces.

Embodiment

Shown in the frame of broken lines of Fig. 1, in the digital media player of the present utility model, comprise a microprocessor and a mpeg decoder, when specifically implementing, can adopt the chip of an integrated microprocessor and mpeg decoder.Described mpeg decoder can be decoded to digital signals such as its MPEG-1 that receives, MPEG-2 or MPEG-4, and simultaneously, wherein integrated TV encoder can be output again behind the analog video signal with decoded digital video signal processing.As seen, the Voice ﹠ Video signal of exportable respective digital of this decoder and simulation.

As can be seen from Figure 1, this digital media player has four kinds of input interfaces, is respectively: 1) USB general-purpose interface specifically can be USB1.1 or USB2.0 general-purpose interface, it can be connected with external personal computer (PC), to receive required digital audio and vision signal; 2) Internet lan interfaces (LAN), it can directly be connected with PC, also can be connected with other PC or server by HUB, perhaps with Internet connection, to receive required digital audio and vision signal; 3) wireless lan interfaces (WLAN) specifically can be IEEE802.11b or IEEE802.11g, and it can directly be connected with PC, also can be connected with other PC or server by HUB, perhaps with Internet connection, to receive required digital audio and vision signal; 4) card reader, it can be connected with the storage card that uses in the device such as digital camera, and for example CF card, SD card, SM card, mmc card or SONY memory stick etc. are to read static state or dynamic video data wherein.

As seen, digital media player of the present utility model can be connected with external equipment by multiple input interface, to receive required audio or video signal.

As can be seen from Figure 1, this digital media player has four kinds of video output interfaces, is respectively:

1) CVBS interface is used to export composite video signal, and this is a kind of basic analog video signal that is applicable to the common simulation television set.

2) Y/C light tone separation interface, the analog video signal that its exportable light tone is separated can be connected to the S terminal of television set;

3) YPbPr component output interface;

4) DVI interface, its direct output digital video signal can be directly connected to Digital Television or other digital video display device.

As can be seen from Figure 1, also be provided with simulation and two kinds of audio output interfaces of numeral in this digital media player, wherein, the analogue audio frequency output interface is 2 channel stereo output interfaces, and the digital audio output interface can be optical fiber output interface or coaxial output interface.As seen, digital media player of the present utility model can be connected with external equipment by multiple output interface, with to relevant sound equipment and display device output audio and vision signal.

For the ease of the user this digital media player is controlled, be provided with one therein and shake the control receiving circuit, and send remote signal to described remote-control receiving circuit by the remote controller that is independent of this digital media player on the structure.In addition,, also be provided with the control panel circuit,, also can finish some main controlled function by control button wherein for the ease of also controlling under the situation of remote controller not having.

The output interface of the utility model digital media player is connected to corresponding stereo set, can plays various digital musics, can support audio formats such as MP3, AC3, LPCM, WAV, WMA, and can be used as an internet radio.

In addition, also available digital media player of the present utility model is browsed digital picture or movie.For example directly with the picture in the computer, film or music to television set, because television screen is more much bigger than computer display, so viewing effect also can be much better; This digital media player can be supported picture formats such as JPEG, GIF, TIF, BMP, PNG, and supports MPEG1/2/4, DIVX, video formats such as Xvid, RMP4; Also support Doby 5.1 surround sound effect and high definition televisions.

In addition, also available digital media player of the present utility model comes browsing page, if be connected to the Internet by the High Speed Network winding thread, then can download required music and film, the available television machine is as display at this moment, and the user can be recumbent on a sofa comfily fully and operate.

In preferred embodiment of the utility model, the circuit of digital media player as shown in Figure 2, wherein, decoder adopts the EM8550/EM8551 chip, wherein integrated mpeg decode, microprocessor (MCU), television encoder functions such as (TV ENCODER); Right upper portion is the radio network interface (PCMCIA) of band card reader, is that wired network interface (RJ45), left side topmost are USB interface under it that this three has constituted four kinds of input interfaces of whole player.SDRAM below the wired network interface and FLASH are the program storage and the internal memories of decoder.Under USB interface various output interfaces, from top to bottom be successively: the output of analogue audio frequency left and right sound channels, the output of digital audio optical fiber, the coaxial output of digital audio, composite video output, the output of S terminal, component Y, Pb, Pr output, VGA (Video Graphics Array) output and the output of DVI digital video.

In preferred embodiment of the utility model, the structure of digital media player as shown in Figure 3 and Figure 4, as can be seen from Figure 3, whole player is made up of the radio network interface 4 of upper casing 2, lower casing 6, front panel 1, rear board 5, the printed circuit board (PCB) 3 that has related circuit and band card reader.

There is shown each input/output interface of this player in rear board signal shown in Figure 4, be successively from left to right: the output of DVI digital video, component Y, Pb, Pr output, the output of S terminal, composite video output, the output of analogue audio frequency left and right sound channels, the coaxial output of digital audio, the output of digital audio optical fiber, wired network interface, USB interface, and power input interface.

Claims

1, a kind of digital media player, the decoder that comprises microprocessor, input interface, output interface and be used for compressed video and audio signal are carried out decoding processing; It is characterized in that,

Also comprise the remote-control receiving circuit that is connected with described microprocessor, and the remote controller that can send remote signal to described remote-control receiving circuit; Wherein, described input interface comprises a wireless lan interfaces at least, and described decoder is MPEG-1, MPEG-2 or MPEG-4 decoder, and described output interface comprises a CVBS (composite video signal) output interface at least.

2, digital media player according to claim 1 is characterized in that, described input interface also comprises wired lan interfaces (LAN).

3, digital media player according to claim 2 is characterized in that, described input interface also comprises the USB general-purpose interface.

4, digital media player according to claim 3 is characterized in that, described input interface also comprises the card reader that is used for from the storage card reading of data.

5, digital media player according to claim 4 is characterized in that, described card reader and described wireless lan interfaces integrate.

According to each described digital media player among the claim 1-5, it is characterized in that 6, described output interface also comprises DVI (digital visual interface).

7, digital media player according to claim 6 is characterized in that, described output interface also comprises Y/C light tone separation interface.

8, digital media player according to claim 7 is characterized in that, described output interface also comprises YPbPr component output interface.

9, digital media player according to claim 8, it is characterized in that, described output interface also comprises audio output interface, and described audio output interface can be one or more in analogue audio frequency 2 channel stereo output interfaces, digital audio optical fiber output interface or the coaxial output interface of digital audio.

10, according to each described digital media player among the claim 1-5, it is characterized in that, also comprise the control panel circuit that is connected with described microprocessor, and described microprocessor and decoder are integrated in the same chip.