CN201340668Y - Multimedia classroom courseware playing minimum system - Google Patents

Abstract

The utility model discloses a multimedia classroom courseware playing minimum system which comprises a control module, a VGA interface, a memory module, a USB module, an audio output module, a power supply management module, other modules such as a reset circuit, an oscillating circuit and the like, and expansion modules. The control module which is a main control component of equipment has the functions of recognizing a U disk as well as file formats in the U disk, and controlling the playing of files, and the like; the VGA interface is a display connector which is used for connecting a projector, so as to project a document courseware onto a large screen; the memory module is used for managing a memory in a system memory module; the USB module can exert the function of USB HOST; the audio output module is connected with an audio output port in an external manner; the power supply management module is used for managing power supply needed by the system; other modules include a system reset module, a real-time clock module and the like; and the expansion modules include debugging or spare interface modules and the like. The modules are connected by buses, and then connected with a controller module by bus interfaces. The multimedia classroom courseware playing minimum system achieves obvious progresses in three indexes including volume, weight and energy consumption.

Description

A kind of multimedia classroom courseware playing minimum system

Technical field

The utility model relates to a kind of media play system, especially relates to a kind of multimedia classroom courseware playing minimum system.

Background technology

Existing multi-media classroom playback equipment, mainly be with desktop PC or notebook as main frame, connect projector by control desk and output on the elecscreen.There are some drawbacks in this system configuration method:

(1) existing multimedia teaching facility has been wasted many soft, hardware resources.Complete relatively software is installed all for each classroom is equipped with a host computer by general school, and price does not wait for from 0.5 to 10,000 yuan.

(2) some school is that every teacher has joined notebook computer, and last class hour takes.The function majority of this computer just is used for playing courseware, has brought very big burden to teacher's working.Different notebook computers before class wants teacher oneself to connect projector, meets unmatched problem through regular meeting, and projection can not put influence on class, and the teaching accident takes place.

(3) how many schools the whole nation has, and how many multi-media classrooms are arranged again, the depreciation of equipment, corrupted, maintenance etc., and its appropriate litigation fees is considerable.

The embedded computer system technology is the surprising new computer technique of speed of development in recent years, and to be applied as purpose, having software and hardware can reduce, the low characteristics of small and exquisite, portable cost, and successful Application is at aspects such as mobile phone, Medical Instruments.Can design desktop PC or notebook computer that a kind of product replaces multi-media classroom, realize document courseware playing function? answer is sure.

Summary of the invention

The purpose of this utility model is to realize that a kind of multi-media classroom document courseware playing minimum system replaces the desktop PC or the notebook computer of traditional multi-media classroom, save software and hardware resources, price is lower than 1/5th of former investment, and ultimate system is non-maintaining, improves system stability.

To achieve these goals, the utility model is taked following technical scheme,

The composition of the utility model each several part, its connection and the function that is realized are as follows:

(1) control module: like the central processing unit of desk-top computer, be the equipment master control unit, can discern the file layout in USB flash disk, the identification USB flash disk, and the functions such as broadcast of control documents;

(2) VGA interface: Display connector.Be used to connect projector, so that the document courseware is rendered on the giant-screen;

(3) memory module: management is the storer in the memory module, as SDRAM, SRAM and Flash (NAND type or NOR type).

(4) USB module: enable USB HOST function, as the keyboard of the mouse of USB, USB and USB flash disk etc.

(5) audio frequency output module: external audio frequency delivery outlet.

(6) power management module: the power supply required to system manages.

(7) other module such as reset circuit, oscillatory circuit: system reset, the time real time clock etc.

(8) expansion module: debugging or spare interface module etc.

Each module connects by bus, links to each other with control diemaker piece through bus interface again.

3, beneficial effect

The utility model is to utilize the computer science new technology, it is embedded system technology, make every effort to replace hardware devices such as former multi-media classroom desk-top computer or notebook, according to product design scheme and flow process, soft, hardware are reduced the back form a minimum system, can realize the document courseware playing function that present all classroom multimedia systems are finished.

This utility model invention product, volume, weight and three indexs of energy consumption are little all to have tangible progress to comparing with original computer system, average price is 1/5 to 1/10 of original computer system, realized that software is non-maintaining, freed and carried the teacher that computer package bears a heavy burden and goes to work everyday, reached the advanced design theory of " environmental protection ".

Description of drawings

Fig. 1 is a functional module structure synoptic diagram of the present utility model.

Embodiment

The hardware system part has been selected Samsung Sumsung 2410 core microprocessors chips, and core board adopts the design of six laminates, and area is 6.78cm*4.32cm, by 200PIN DDR sdram interface all resources is drawn.Can select need not (during exploitation must) for integrated CS8900A 10M Ethernet card chip on the core board.Simultaneously, FLASH can select the NAND FLASH of IM, 2M, 4M NOR FLASH or 8M, 16M, 32M, 64M, 128M; The capacity of SDRAM can be chosen as 16M, 32M, 64M, 128M byte.

Core board provides VGA interface, two SP2 interfaces, two USB serial ports, Ethernet interface, SPEAKER, MIC, USB HOST, USB DEVICE, MULTI-ICE JTAG and AD interfaces, also has LCD/ touch screen interface, ide interface, bus interface and expansion mouth.Wherein SP2 interface, Ethernet interface, MULTI-ICE JTAG, AD interface, LCD/ touch screen interface, ide interface, bus interface and expansion mouth can directly be reduced, keep (being used for debugging) when USB HOST, USB DEVICE interface exploitation, finished product can remove, two USB keep, mouse interface as USB, another external USB flash disk.

Peripheral VGA interface is used to connect the projector of classroom multimedia system, and the document courseware is projected on the projection screen.A USB mouth connects mouse, the control when carrying out the broadcast of document courseware, and another USB mouth connects USB flash disk.

Claims (2)

1, a kind of multimedia classroom courseware playing minimum system comprises, audio frequency output module, power management module, reset circuit module, oscillatory circuit module is characterized in that, also comprise

Control module is used to discern the broadcast of file and control documents;

The VGA interface is used for Display connector;

It is the storer of memory module that memory module is used for managing;

The USB module is used to enable USB HOST function;

Each module connects by bus, links to each other with control diemaker piece through bus interface again.

2, a kind of multimedia classroom courseware playing minimum system according to claim 1 is characterized in that, described storer can be SDRAM or SRAM or Flash.

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