CN2257043Y - Single board computer display screen with editing function - Google Patents

Abstract

The utility model relates to a programmable single board computer display screen, which belongs to the technical field of electronic display technology and has the programming function. The programmable single board computer display screen is provided with a mouse device, a character symbol dot matrix database chip and a power down data storage circuit used for displaying characters, symbols and figures, and can realize the input of the letter symbols, make a word and draw pictures.

Description

Can edit the single-chip microcomputer display screen

The utility model belongs to the electronic display technology field, is specifically related to a kind of single-chip microcomputer display screen of editing.

In information age now, display technique is the important means that diffuses information, and at present, computer display screen can be divided into two kinds from control mode, and a kind of is microcomputer control, and a kind of is Single-chip Controlling.Microcomputer-controlled computer display screen, the editor of literal, symbol, figure is by means of microcomputer, and this display screen investment is big, and the ratio of performance to price is low.Monolithic processor controlled computer display screen does not have editting function, and the input of literal, symbol, figure needs certain auxiliary device and technology, and the extent of spreading amd application is little.

The purpose of this utility model is exactly the problem at above existence, and designing is not a kind ofly having under the microcomputer-controlled condition, can realize literal, symbol input, coinage, mapping, and the displayable single-chip microcomputer display screen of editing.

The purpose of this utility model is achieved through the following technical solutions: with single-chip microcomputer as control center, add program storage, data-carrier store, the I/O expansion interface circuit, keyboard circuit, driving circuit, dot matrix display screen, the power down data storage circuitry, mouse apparatus, letter symbol dot array data storehouse chip and corresponding program constitute can edit the single-chip microcomputer display screen.Mouse apparatus and keyboard be as editor's man machine interface, and letter symbol dot array data storehouse chip is used for depositing fixing by the edit file data, and the power down data storage circuitry is used for depositing the information data that edits and the information data of coinage mapping.Angle is changed mouse apparatus or change in displacement converts corresponding pulse change or data variation to, single-chip microcomputer is accepted pulse or data, can realize the variation of display screen show state, the variation of this show state, can be moving of show label, also can be the search of display message.Mouse apparatus can be the wired connection mode with being connected of single-chip microcomputer, also can be the wireless remote control mode, wired connection mode mouse apparatus comprises mechanical rotation or move-light conversion device, light-power conversion circuit, wireless remote control mode mouse apparatus comprise mechanical rotation or move-light conversion device, light-power conversion circuit, digital coding and radiating circuit, reception and decoding circuit.The power down data storage circuitry is used for preserving the information data of the information data that edits and coinage mapping, has not losing property of power down, the power down data storage circuitry can adopt the electrically erasable programmable ROM chip, also can adopt the static data storer to add backup battery and constitute.Letter symbol dot array data storehouse chip can adopt mask ROM or optic erasable read only storer or electrically erasable programmable ROM, be used for depositing the dot array data of various letter symbols, these data have non-volatile, and deposit by certain rule, single-chip microcomputer reads required data by the I/O expansion interface circuit.The realization of letter symbol input can utilize mouse to search required letter easily to the phonetic alphabet literal, by the keyboard input, non-phonetic alphabet literal is needed to carry out the substep search by certain rule.The realization of coinage mapping function is to utilize mouse apparatus, " point " is moved form certain font or figure, imports by keyboard again.

Advantage of the present utility model is: system configuration is little, and ratio of performance to price height need not microcomputer, can realize literal, symbol input, but and the coinage mapping, can show by certain display mode.Simple to operation.The utility model is for the small display screen particularly suitable.

Fig. 1 is for can edit single-chip microcomputer display screen system theory diagram.

Fig. 2 can edit single-chip microcomputer display screen schematic diagram for embodiment wireless remote control mode mouse apparatus.

Fig. 3 can edit monolithic for embodiment wireless remote control mode mouse apparatus, machine display screen flow chart.

Among the figure, IC1, IC2-l, IC2-n, IC3-1, IC3-m, IC4, IC5 ... IC15 is an integrated circuit.IR-LED is an infrarede emitting diode, and PD is an infrared receiving tube, and G1, G2, G3, G4 are photosensitive tube.

Further specify the utility model below in conjunction with drawings and Examples, embodiment can edit the single-chip microcomputer display screen for wireless remote control mode mouse apparatus, is mainly used to show Chinese character, and dot matrix display screen is the LED light emitting diode (LED) display screen.IC1 is a singlechip chip, can adopt 8031, and IC14 is a program storage, and IC15 is a data-carrier store, and IC11 is a latch.IC2-l, IC2-n are parallel delivery outlet, and IC3-1, IC3-m are driving circuit, are used for display screen arrange and drive.IC4 is a code translator, and its output is through the demonstration of Darlington transistor control row.Display screen can be divided into 16 row, and some row only show delegation at every turn, and the method that adopts scanning to refresh realizes.IC5 is the static data storer, IC6 is a supervisory circuit, IC5, IC6 and reserve battery constitute the power down data storage circuitry, the Vdd voltage of IC6 just often, the V0 of IC6 links Vdd in inside, and CE0 links CEI, when the voltage of IC6 descended, the V0 of IC6 linked VB in inside, and CE0 becomes high level, thereby guarantee that IC5 does not cut off the power supply, single-chip microcomputer also can not occur error in data is write IC5.Mouse apparatus and keyboard adopt the wireless remote control mode, and mechanical rotation-light conversion device resolves into the roating sphere velocity of rotation infrared pulse pace of change of any two or one directions in the coordinate system four direction " x axle forward, x axle oppositely, y axle forward, y axle reverse ".Infrared light pulse changes and to convert level to by photosensitive tube and change, and photosensitive tube output and keyboard coding have constituted the digital coding of IC7, and IC7 is the coding integrated circuit, and IC7 launches geocoding and digital coding with IR-LED emission infrared light pulse.PD receives infrared light, after IC9 receives detection IC8 is delivered in pulse, and IC8 is a decoding integrated circuit, and when IC8 was consistent with the IC7 geocoding, IC8 just had the digital coding output that solves.IC7, IC8 can adopt coder and decoder ic UM3758-108A.The output of IC8 is sent into IC1 through IC10.IC13 is a letter symbol dot array data storehouse chip, and its address is provided by IC12, and data output is sent into IC1 through IC10.IC10, IC12 can adopt 8255 for parallel input and output expansion mouth.The input of Chinese character can adopt Chinese phonetic alphabet search procedure to search required Chinese character, imports by keyboard again.Chinese phonetic alphabet search procedure is that Chinese phonetic alphabet syllable (about 408 kinds) is arranged in certain sequence, utilizes mouse first letter of search earlier, searches for the Chinese phonetic alphabet syllable with this beginning of letter again, and then searches for the Chinese character of this Chinese phonetic alphabet syllable correspondence.

Claims (4)

1, a kind of single-chip microcomputer display screen of editing, form by single-chip microcomputer, program storage, data-carrier store, I/o expansion interface circuit, keyboard circuit, driving circuit, dot matrix display screen, it is characterized in that to edit the single-chip microcomputer display screen and be provided with mouse apparatus, letter symbol dot array data storehouse chip, power down data storage circuitry, can edit the single-chip microcomputer display screen and have editting function.

2, the single-chip microcomputer display screen of editing according to claim 1 is characterized in that people--the machine interface of mouse apparatus as editor, and mouse apparatus can be the wired connection mode, also can be the wireless remote control mode.

3, the single-chip microcomputer display screen of editing according to claim 1, it is characterized in that letter symbol dot array data storehouse chip is used for depositing fixing by the edit file data, letter symbol dot array data storehouse chip can adopt mask ROM or optic erasable read only storer or electrically erasable programmable ROM.

4, the single-chip microcomputer display screen of editing according to claim 1, it is characterized in that the power down data storage circuitry is used for depositing the information data that edits, the power down data storage circuitry can adopt electrically erasable programmable ROM or static data storer to add the backup battery formation.

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