Intelligent desk and digital signal processing method

Abstract

The invention relates to an intelligent desk and a digital signal processing method. The structure of the intelligent desk is that: a signature flat panel (1) is arranged on the intelligent desk; a liquid crystal flat panel display (2) and a liquid crystal display drive board (3) are sequentially arranged below the intelligent desk; four three-dimensional force sensors (4) are fixed at four corners below the signature flat panel (1) through four fixing adapter plates (5); and a digital signal processing plate (6) is fixed above the central position of a base flat panel (7) by internal hexagonal positioning holes (8) on two sides. In the digital signal processing method for the intelligent desk, the digital signal processing plate (6) digitally processes acquired analogue three-dimensional force information, performs digital smooth filtering processing to reduce the influence of interference noises, and performs data fusion processing on data to obtain the three-dimensional force vector information and real-time track coordinates of a contact point of a pen point; and calculated coordinate information is displayed to achieve the real-time visual feedback effects of a writing process.

Description

technical field [0001] The invention relates to the fields of computer information and automation electronics, in particular to an intelligent desk and a digital signal processing method. Background technique [0002] Smart desks, also known as digital desks, digital desktops or smart desktops, are named DigitalDesk, DeskTop or InteractiveDesk in English literature. service equipment or devices. [0003] Traditional desks, such as office desks, conference tables, and student desks, are only used as office or support equipment, and people need to frequently switch between physical paper and electronic computers placed on the desktop to complete the corresponding tasks. The task, taking the office contract as an example, people need to complete the electronic version of the contract revision through the computer placed on the desk in advance, after confirming that it is correct, then print the electronic contract into a paper document, and then hand it over to the relevant T...

AI Technical Summary

Problems solved by technology

[0009] The handwriting intelligent operation function realized in the existing desks is completed through touch devices. Typical touch technologies include infrared, surface ultrasonic, piezoresistive and piezocapacitive, etc., but these technologies all have response speed. Insufficient, low positioning accuracy, etc. In addition, touch input devices based on piezoresistive or piezocapacitive designs also have special requirements for handwriting operations, which generally require special pens or input tools to better complete The entire handwriting operation process, while the infrared or surface ultrasonic touch input methods are easily affected by other frequency waves, resulting in frequent misoperations in handwriting operations. These factors greatly affect the effectiveness of handwriting operations;

[0010] Existing touch technology has a serious deficiency in realizing the handwriting operation function, especially in the process of handwriting input, handwriting information, especially handwriting force information acquisition, because the existing touch principle can only obtain the coordinate position of handwriting information, and the real handwriting process is essentially a force operation process that contains physical characteristics or biological mechanisms. The handwriting position information is the trace information left after the handwriting force interacts with the contact surface. This implicit handwriting force information It cannot be obtained from existing desks;

[0011] The existing desks have shortcomings in the visual feedback effect of handwriting input, that is, the existing desks can only complete functions such as handwriting input and handwriting correction, but cannot reflect the different visual effects of handwriting caused by the different force of the writer. Feedback effects, especially the visual effects of different writers' writing, that is, the existing desks cannot reflect a personalized writing process

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