Non-contact holographic keyboard apparatus with function of secrecy, sanitation

Abstract

The invention discloses a confidential, cleaning function non-contact holographic keyboard device, including virtual region, control unit, and display device, and virtual region forming a surface and including a number of virtual buttons, and the control unit connecting with the display device, around the virtual region installed with multiple pairs mutual matching launch sensors and receiving sensors, and in each pair launch sensor and receiving sensor, the receiving sensor receives the signal issued by the launch sensor, and the receiving sensor output connecting with the control unit, and the launch sensors of the arbitrary two pairs launch sensors and receiving sensors issues the signals at the junction corresponding to a virtual button of the said virtual region, and one output signal of the control unit respectively drives each launch sensors through a signal amplification driver circuit. Due to the above circuit structure, the invention has advantages of high safe performance, non-contact, clean health, long life, and others.

Description

technical field [0001] The invention relates to a keyboard device, in particular to a non-contact holographic keyboard device with functions of keeping secret and keeping clean. Background technique [0002] At present, the keyboards on the market are generally contactable, and they are all-round visible. Due to the limitation of the number of times of use, this type of keyboard is not conducive to use in some environments that require cleanliness or confidentiality, and is not suitable for use in harsh environments. If it is used in an environment, such as a chemical workshop, it is easy to corrode the above-mentioned keyboard and accelerate its aging. Some optical keyboards have also appeared on the market, and the keyboard image is projected on a plane, which can reduce the damage to it in harsh environments, but these optical keyboards are also contact keys, and the keyboard is also polluted during operation. At present, the so-called sealed "durable" keyboards on the m...

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