CN102360253A

CN102360253A - Handwriting pen of light emitting diode (LED) dot-matrix writing display screen

Info

Publication number: CN102360253A
Application number: CN2011103374347A
Authority: CN
Inventors: 管存忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-01
Filing date: 2011-11-01
Publication date: 2012-02-22

Abstract

The invention discloses a handwriting pen of a light emitting diode (LED) dot-matrix writing display screen. The handwriting pen is wirelessly connected with a controller of the dot-matrix writing display screen through an infrared ray and comprises a pen body, a photosensitive transistor, a singlechip, an infrared emission tube and a battery, wherein the singlechip is respectively connected with the infrared emission tube, the photosensitive transistor and the battery; and the singlechip is used for processing a handwriting track signal which is input by the photosensitive transistor during the contact with an LED and controlling the infrared emission tube to emit the handwriting track signal. By changing the wired connection of the handwriting pen into the wireless connection of the handwriting pen, the LED dot-matrix writing display screen ensures that the displayed contents can be conveniently and flexibly edited and revised; and by arranging a plurality of keys on the handwriting pen, the handwriting pen can be used as an infrared remote controller and is simple in structure, low in cost and suitable for batch production.

Description

A kind of LED dot matrix is write the writing pencil of display screen

Technical field

the present invention relates to a kind of LED dot matrix and write display screen, particularly relate to the writing pencil that a kind of LED dot matrix is write display screen.

Background technology

are present, and the connection that the LED dot matrix is write the writing pencil of display screen is a wired connection, and just writing pencil directly is connected with the controller of display screen through signal wire.For example; One Chinese patent application numbers 201010119780.3; Application publication number CN101788866A, on 07 28th, 2010 Shen Qing Publication day, the writing pencil in " a kind of LED dot matrix display screen " that patent of invention is announced based on handwriting input; Similarly reported in literature is a lot of, and its advantage is all very familiar.But, the writing pencil of wired connection, flexibly inconvenient during use.

Summary of the invention

the objective of the invention is to, and provide a kind of LED dot matrix to write the writing pencil of display screen, and this writing pencil is through the controller wireless connections of infrared ray and dot matrix display screen.

For realizing above-mentioned purpose, technical scheme of the present invention is following:

a kind of LED dot matrix is write the writing pencil of display screen, comprises handwriting and photistor; Be used to import the handwriting tracks signal on the said display screen; Wherein, also comprise single-chip microcomputer, infrared transmitting tube and battery; Said single-chip microcomputer is connected with said infrared transmitting tube, said photistor and said battery respectively, and said single-chip microcomputer is used to handle the handwriting tracks signal of said photistor input and controls said infrared transmitting tube and launch hand-written trajectory signal.

are preferred, also have been connected a transistor, the emissive power that is used to amplify said infrared transmitting tube between said single-chip microcomputer and the infrared transmitting tube.

are preferred, and said single-chip microcomputer also is connected with a plurality of operating keys respectively, is used for remote control and expanded function.

Beneficial effect of the present invention:

the present invention is through being arranged on the infrared transmitting tube on the writing pencil; The handwriting tracks signal is transmitted to the controller of LED dot matrix display screen; Realized wireless connections, made the LED dot matrix display screen more convenient flexible when editor and modification displaying contents; Preferably, the last a plurality of operating keys that are provided with of the present invention can expanded function, as using as IR remote controller, and also simple in structure, cost is low, is fit to produce in batches.

Description of drawings

Fig. 1 is the writing pencil outside drawing that a kind of LED dot matrix is write display screen;

Fig. 2 is the cut-open view of writing pencil shown in Figure 1;

Fig. 3 is a kind of circuit theory diagrams of Fig. 1 and Fig. 2 writing pencil;

Fig. 4 is Fig. 1 and the preferred circuit theory diagrams of Fig. 2 writing pencil;

Fig. 5 is the preferred another kind of circuit theory diagrams of Fig. 1 and Fig. 2 writing pencil.

Embodiment

are in order to further specify principle of the present invention and structure; Combine accompanying drawing to a preferred embodiment of the present invention will be described in detail at present; Yet said embodiment is merely the usefulness that furnishes an explanation and explain, can not be used for limiting scope of patent protection of the present invention.

The writing pencil of display screen is write like Fig. 1, Fig. 2, a kind of LED dot matrix shown in Figure 3 in , comprises handwriting 1 and photistor 2; Be used to import the handwriting tracks signal on the said display screen (figure does not show); Wherein, also comprise single-chip microcomputer 7, infrared transmitting tube 8 and battery 3; Pin P1.2, P1.4, VDD and the VSS of said single-chip microcomputer 7 is connected with said battery 3 with the positive pole of said infrared transmitting tube 8, the collector of said photistor 2 respectively; The positive pole of this battery 3 is connected with the pin VDD of single-chip microcomputer 7, and the negative pole of said battery 3 is connected with the pin VSS of single-chip microcomputer 7, the negative pole of infrared transmitting tube 8 and the emitter of photistor 2 respectively; Said single-chip microcomputer 7 is used to handle the handwriting tracks signal and the hand-written trajectory signal of said infrared transmitting tube 8 emissions of control of said photistor 2 inputs; The scanning bright spot signal that has only displaying contents on the general LED dot matrix display screen; And the LED dot matrix is write display screen also is provided with demonstration of X axle and the demonstration of Y axle when editor and modification displaying contents scanning bright spot signal; When the photistor that is provided with on the writing pencil 2 touches certain LED on the display screen; The scanning bright spot signal that the X axle that receives shows and the Y axle shows is exactly the handwriting tracks signal; Photistor 2 is phototriodes of 3DU7 model; Single-chip microcomputer 7 is paster single-chip microcomputers of W79E822A model; Infrared transmitting tube 8 is that peak wavelength is the infrared transmitting tube of 3mm specification for the 940nm diameter; Battery 3 is chargeable 3.6V cellular li-ion batteries, and writing pencil is provided with the charging inlet (figure does not show) of battery 3.

are as shown in Figure 4, and are preferred, better for the handwriting tracks signal effect that makes infrared transmitting tube 8 emissions, increased the paster triode 5 that amplifies 8550 models of infrared power; The collector of this triode 5 is connected with the positive pole of infrared transmitting tube 8, and the base stage of triode 5 is connected with the pin P1.2 of single-chip microcomputer 7 through resistance 6, and the emitter of triode 5 is connected through the positive pole of resistance 4 with battery 3.

are as shown in Figure 5, and are preferred, increased operating key 9,10,11,12,13,14,15,16,17; One end pin of said operating key 9,10,11,12,13,14,15,16,17 is connected with pin P1.3, P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6 and the P0.7 of single-chip microcomputer 7 respectively; The other end pin of said operating key 9,10,11,12,13,14,15,16,17 is connected with the negative pole of battery 3 jointly, is used for remote control and expanded function.

said embodiment advantage and beneficial effect are; Through being arranged on the infrared transmitting tube on the writing pencil; The handwriting tracks signal is transmitted to the controller that the LED dot matrix shields, has realized wireless connections, make display screen more convenient flexible when editor and modification displaying contents.Preferably, a plurality of operating keys that said embodiment is provided with can expanded function, as using as IR remote controller, and also simple in structure, cost is low, is fit to produce in batches.

above just embodiment of this invention of describing; Various not illustrating constitutes restriction to the essence of an invention content; Under the those of ordinary skill of technical field after having read instructions can to before described embodiment make an amendment or be out of shape, all should be regarded as belonging to protection scope of the present invention.

Claims

1. a LED dot matrix is write the writing pencil of display screen; Comprise that handwriting and photistor are used to import the handwriting tracks signal on the said display screen; It is characterized in that: also comprise; Single-chip microcomputer, infrared transmitting tube and battery, said single-chip microcomputer are connected with said infrared transmitting tube, said photistor and said battery respectively, and said single-chip microcomputer is used to handle the handwriting tracks signal of said photistor input and controls said infrared transmitting tube and launch hand-written trajectory signal.

2. a kind of LED dot matrix according to claim 1 is write the writing pencil of display screen, it is characterized in that: also be connected a transistor, the emissive power that is used to amplify said infrared transmitting tube between said single-chip microcomputer and the infrared transmitting tube.

3. a kind of LED dot matrix according to claim 1 and 2 is write the writing pencil of display screen, it is characterized in that: said single-chip microcomputer also is connected with a plurality of operating keys respectively, is used for remote control and expanded function.