Braille character display device and communication terminal with this device

Abstract

A braille display device for a communication terminal and a communication terminal which uses the device are provided, the device comprises a plurality of contact groups which are used for displaying single braille character, each contact comprises a boss outwall which encloses to form a hollow cavity and has a bossing portion at one end for partly covering the opening of the cavity; an electromagnet which is arranged at bottom of the cavity; an electrode which is connected with the electromagnet to apply unidirectional voltage to the electromagnet; a permanent magnet arranged in the cavity and on the electromagnet which has a boss at one side being opposite to the opening of the cavity; a resetting device which applies a resetting force to the permanent magnet to make the permanent magnet pressed on the electromagnet; when the electromagnet is applied unidirectional voltage by the electrode, the electromagnet generates a magnetic force which is repellent with the permanent magnet to push the permanent magnet upward, make the boss extruded out of the opening of the cavity. Thereby, information can be acquired through touching without needing help of sound devices.

Description

technical field [0001] The invention relates to a braille display device applied to a communication terminal and a communication terminal with the braille display device. Background technique [0002] With the rapid development of mobile communication, portable phones or various portable terminals can meet people's communication needs anytime and anywhere, and have become an indispensable communication tool for people. People frequently use short messages to exchange various information. At present, the short message service has reached 30 billion monthly sending volume in the world. But when we send text messages easily and casually, the vast number of visually impaired people cannot use modern communication services as conveniently as we do, and cannot communicate with the outside world conveniently and quickly, especially short message exchanges. [0003] In order to solve the problem of short message communication barriers for the majority of visually impaired people, ...

AI Technical Summary

Problems solved by technology

[0005] Whether it is "Blind Assisting SMS" or the method provided by CN1752903A, voice assistance is required, and the privacy of short message communication cannot be fully guaranteed

In addition, since the content of the voice cannot be heard clearly in noisy places, the communication terminal used by the blind using the voice output method is not convenient for blind friends to use in public places.

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