Photoelectric keyboard

A keyboard and photoelectric technology, applied in the field of input devices, can solve the problems of high production cost, large power consumption, high energy consumption, etc., and achieve the effect of low manufacturing cost, simple structure and high sensitivity

Inactive Publication Date: 2006-11-08
郭超逸
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage of this product is that the production cost is too high, and it consumes a lot of power. The ordinary battery can only last for 2 hours. the popularity of

Method used

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Embodiment Construction

[0033] according to figure 1 Shown, be the structural representation of photoelectric keyboard of the present invention, photoelectric keyboard of the present invention comprises key symbol body 5, sensor array 1 and keyboard encoder 2; 1 The optical sensing device used is an infrared sensor, which captures the tapping action and sends out a blocking signal. When a tapping action is detected, all other tapping actions are invalid; the function of the keyboard encoder 2 is to detect the sensor The received occlusion signal is converted into a serial code, and the serial code is buffered, and various parameters of the keyboard are adjusted, and transmitted to the host 4 through the communication interface 3, and the control signal sent by the host 4 can be received; the keyboard encoder 2 It also includes a scanning controller 21 for controlling the scanning process of the sensor array.

[0034] The sensor array 1 is shaped like a window frame. According to different scanning m...

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Abstract

This invention relates to a photoelectric keyboard including a key symbol body, a keyboard encoder and a sensor array arranged on the outer edge of the symbol body and composed of an emitting head of the sensor and a corresponding receiving head at the relative edge of the sensor, in which, the emitting head and the receiving head form an optical path between them when working, fingers click the symbol labels on the keys to result in shading of the optical path and generate shelter signals, the keyboard encoder also includes a scan controller for controlling the scanning mode of the sensor array and converts the shading signals detected by the sensor to a serial keyboard encoding to store it and adjusts the parameters of the keyboard to transmit them to the CPU via the communication interface.

Description

technical field [0001] The invention relates to an input device, in particular to a photoelectric keyboard which adopts an optical sensing method and captures the tapping action of a finger to perform an input function. Background technique [0002] Looking at the input devices that appear now, they can be roughly divided into four types: mobile phone digital keyboards, handwriting touch screens, folding mechanical keyboards, and virtual keyboards. Their characteristics are as follows: [0003] Numeric keyboard and handwriting touch screen: have been widely used, but their common problem is that the input speed is too slow, and must have a certain physical space, and can only achieve an input rate of about 20 words / minute. [0004] Folding mechanical keyboard: It can be unfolded into a notebook keyboard to obtain an ideal input speed of about 40 characters per minute. However, since the principle is based on the compression of the existing keyboard, it is impossible to make ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/02
Inventor 郭超逸
Owner 郭超逸
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