CN2774022Y

CN2774022Y - Digital medium adapter

Info

Publication number: CN2774022Y
Application number: CN 200420097898
Authority: CN
Inventors: 李玉军; 丁倩
Original assignee: Hisense Group Co Ltd
Current assignee: Hisense Group Co Ltd
Priority date: 2004-11-26
Filing date: 2004-11-26
Publication date: 2006-04-19
Anticipated expiration: 2014-11-26

Abstract

The utility model relates to a digital medium adapter which belongs to the technical field of information household appliances and comprises a casing and an electronic circuit, wherein the electronic circuit comprises an embedded processor, a memory, a Host PC communication module, a USB module, a remote controller module, an audio module, a video module, a user interface module and a power module, wherein the embedded processor is respectively connected with the memory, the Host PC communication module, the USB module, the remote controller module, the audio module, the video module and the user interface module; the power module supplies power for the electronic circuit.; the embedded processor adopts a PXA250 of the Intel corporation; the memory adopts a FLASH of 2M and an SDRAM of 16M; the Host PC communication module comprises two parts, i.e., an 802.11b module and an Ethernet controller; a control chip of the Ethernet controller is an LAN91C96. The utility model can enable colorful multimedia resources in PCs and on the internet to be exhibited through the large screens of TVs and the multimedia effect of home theaters and enable people to enjoy media streams which have the advantages of lower cost, abundant contents and various forms.

Description

DMA

Technical field

The utility model belongs to the IT-applied household appliances field, more particularly relates to the design of the DMA of sharing the netcast that reaches Media Stream that is used for family's audio and video resources.

Background technology

At present, the family multi-media amusement is generally by legacy equipments such as DVD player, TVs.These functions of the equipments are single, flexibility is little, more and more can not satisfy the demands.PC and internet information amount are big, and very strong amusement function is arranged, but owing to lack shortcomings such as large scale display, complicated operation, often are not suitable for home entertaining.Therefore,, show, just become a kind of very real user's request and comparatively ideal technical scheme by the large scale display of TV and the multimedia effect of home theater colourful multimedia resource in PC and the Internet.

Summary of the invention

The purpose of this utility model, just be to overcome above-mentioned shortcoming and defect, a kind of DMA is provided, it can be colourful multimedia resource in PC and the Internet, show by the large scale display of TV and the multimedia effect of home theater, obtain the Media Stream that content is very abundant, form is very various with lower cost and enjoy, satisfy the demand in user and market.

The utility model uses Intel flush bonding processor PXA250 and IEEE802.11b radio network technique, obtain audio-video frequency media stream file on the PC by UPnP intelligence interconnection agreement, and convert the audio frequency and video output signal of standard to, export to traditional family multi-media equipment.

In order to achieve the above object, the utility model comprises casing and is installed in electronic circuit in the casing.Electronic circuit comprises flush bonding processor and the memory that is connected with flush bonding processor respectively, with Host PC communication module, USB module, remote controller module, audio-frequency module, video module, Subscriber Interface Module SIM with to the power module of above-mentioned circuit supply.

Flush bonding processor adopts the PXA250 of Intel Company, and memory is the FLASH of 2M and the SDRAM of 16M.Comprise 802.11b module and ethernet controller two parts with Host PC communication module.

The PXA250 processor of Intel Company is a very advanced flush bonding processor.It adopts XScale core, dominant frequency 400M, Intel medium treatment technology, low-power consumption.Has abundant Peripheral Interface: AC97 audio interface, I2C audio interface, USB Client controller, two High Speed UART interfaces etc.The work of this processor mainly contains: audio decoder processing, video decode processing, video demonstration processing, Ethernet or 802.11b processing, operating system, instruction are obtained.2M FLASH memory is used for boot, operating system and application storage; 16M SDRAM memory is used for the operation of operating system and application program.

And Host PC communication module is used for the data communication between DMA and the Host PC, gives media filter the resource transmission on the PC.This module comprises 802.11b module and ethernet control chip two parts.The resource transmission that is placed on the PC equipment is given on the equipment such as TV, sound equipment, is a kind of convenient mode with WLAN communication, therefore of the present utility model the PC communication interface is mainly adopted the 802.11b technology; And, also provide Ethernet interface for the user who tends to use the Ethernet transmission means.Ethernet control chip is LAN91C96.

The USB module is used for the configuration of DMA.Because media filter carries out network service and will carry out some network parameter settings, and it does not have keyboard or other user input device easily, therefore need be connected to it on the PC and be provided with, therefore provide USB Client interface, finish configuration so that connect PC.

Remote controller module is used for the control to DMA.The utility model provides the infrared remote control receiver module, and remote controller control is its major control mode, and controlled content comprises menu selection, audio frequency and video etc.

Audio-frequency module is used for the decoding of audio stream, and decoded signal is changed into high fidelity simulation line-out voltage.Concrete function is: write buffering, quiet, acquisition audio frequency parameter.

Video module: be used for display video still image and graphic user interface.The utility model adopts video scalar and flicker filtering technique that high-resolution PC image is converted into the television image of low resolution, and exports the vision signal that meets corresponding television signal standards NTSC, PAL, SECAM.Concrete function is: write image, obtain and be provided with chromaticity diagram, cls (monochrome), blank demonstration (no video signal), obtain and be provided with luminance video, obtain and be provided with the video contrast, obtain and be provided with video parameter etc. to video equipment.

Subscriber Interface Module SIM is used for the control of DMA.Front panel of the present utility model provides button and LED, can control the voice playing of equipment.Be mainly used in DMA when not being connected on the display devices such as TV the user to the control of adapter.

Power module provides power supply to DMA and foregoing circuit, have+5V ,+output of 3.3V two-way.

The utility model can be colourful multimedia resource in PC and the Internet, show by the large scale display of TV and the multimedia effect of home theater, obtain the Media Stream that content is very abundant, form is very various with lower cost and enjoy, satisfy the demand in user and market.It can be widely used in family, the hotels and other places.

Description of drawings

Fig. 1 is a functional-block diagram of the present utility model.

Fig. 2 and Fig. 3 are the circuit diagram of flush bonding processor PXA250 and interface thereof.

Fig. 4 is the circuit diagram of LAN91C96 ethernet control chip and interface thereof.

Embodiment

Embodiment 1.A kind of DMA is consulted Fig. 1～Fig. 4.It comprises casing and is installed in electronic circuit in the casing.Electronic circuit comprises flush bonding processor (1) and the SDRAM memory (2) that is connected with flush bonding processor (1) respectively and FLASH memory (3), Host PC communication module (4), USB module (5), remote controller module (6), audio-frequency module (7), video module (8), Subscriber Interface Module SIM (10) and to the power module (9) of above-mentioned circuit supply.Flush bonding processor (1) adopts the PXA250 of Intel Company, and memory is the FLASH (3) of 2M and the SDRAM (2) of 16M.Host PC communication module (4) comprises 802.11b module and ethernet control chip two parts.Ethernet control chip is LAN91C96.

During use, at first should PC start and operation DMA Host PC software be connected the utility model and carry out the network parameter setting to it by the USB mouth, make DMA carry out wireless or Ethernet is interconnected with PC.Setting completed, disconnects connecting.This step is necessary when using Digital Media to make orchestration for the first time only.Then the utility model is connected on the TV by the audio frequency and video line, and connects two device power supply (DPS)s.Again the utility model is searched corresponding Host PC equipment by wireless or Ethernet, set up network and connect.Then can obtain graphic user interface, and demonstration outputs on the TV from Host PC.Also can receive the Infrared remote controller signal, be transferred to PC, carry out menu selection and control.Just conversion of signals is become the analog audio-video signal after the Media Stream of PC transmission decoded, export by TV.

Fig. 2 and Fig. 3 show flush bonding processor PXA250 (1) and interface thereof, and Fig. 4 shows LAN91C96 ethernet control chip (4) and interface thereof.

Embodiment 1 can show colourful multimedia resource in PC and the Internet by the large scale display of TV and the multimedia effect of home theater, obtain the Media Stream that content is very abundant, form is very various with lower cost and enjoy.It can be widely used in family, the hotels and other places.

Claims

1. DMA, it comprises casing and is installed in electronic circuit in the casing, it is characterized in that said electronic circuit comprises flush bonding processor and the memory that is connected with flush bonding processor respectively, Host PC communication module, USB module, remote controller module, audio-frequency module, video module, Subscriber Interface Module SIM and to the power module of above-mentioned circuit supply.

2. according to the described DMA of claim 1, it is characterized in that said flush bonding processor adopts the PXA250 of Intel Company, memory is the FLASH of 2M and the SDRAM of 16M.

3. according to claim 1 or 2 described DMAs, it is characterized in that said HostPC communication module comprises 802.11b module and ethernet control chip two parts.

4. according to the described DMA of claim 3, it is characterized in that said ethernet control chip is LAN91C96.