Device for inputting characters

Abstract

The device composed of only one pushbutton can input a character among 1-9, A-Z by one time of operation of pushing the pushbutton. The device includes a mechanical motion set and an electric signal conversion set. Button in the mechanical motion set can be moved in up, down, left and right directions as well as can control additive switch. One time of operation of pushing button can generate sequence of electric signal from multiple switchers. The electric signal conversion set converts switch sequence to electric signals, which represent characters. The invention is applicable to input device of hand held devices such as handset, PDA etc.

Description

Technical field [0001] The invention relates to a character input device, in particular to a character input device used in handheld devices such as mobile phones and PDAs. Background technique [0002] At present, general mobile phones use numeric keyboards as character input, and there are three problems: 1. The data keyboard has a large area. The data keyboard generally has twelve keys 0-9, *, #. If the area is less than 2×2CM, the fingers cannot be accurately positioned because of the small distance between the keys, and incorrect keys may appear. If the keyboard area is large, the volume of the phone must be larger and the screen smaller. 2. People with general skills need to look at the position of the fingers and the keyboard with their eyes to input characters correctly. If you don’t look at it with your eyes, it’s easy to enter wrong characters. Blind typing can only be achieved after a period of practice, so it is inconvenient for people with general skills to operate. ...

AI Technical Summary

Problems solved by technology

[0002] At present, general mobile phones use numeric keypads as character input, and there are three problems: one, the area of ​​the data keypad is relatively large

It is easy to enter wrong characters if you don't look with your eyes

Touch typing can only be achieved after a period of practice, so it is inconvenient for people with ordinary skills to operate

3. When entering A-Z letters, you need to press the key repeatedly

If it is used for a large number of character input, such as: the input of 11-digit long phone number, dozens of buttons are required, and the input efficiency is very low

[0005] In 1990, landline telephones generally adopted the rotary dial dialing method to output pulses for the input of telephone numbers. The electric switch was driven inside the rotary dial, but this kind of telephone dial dial can only turn in one direction, because there are 10 numbers, and the dial is in one direction. There must be ten positions and 10 numerical values ​​corresponding to the dialing, so that the dialing speed is slower

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