Air mouse and method and device for controlling mouse pointer movement

Abstract

The invention discloses an air mouse and a method and a device for controlling the movement of a mouse pointer. The air mouse comprises at least one kind of inertia device, wherein the inertia device comprises a gravity acceleration sensor; and the method for controlling the movement of the mouse pointer comprises the following steps of: setting a report rate of the air mouse based on a vector sum of acceleration output values of various sensing axes of the gravity acceleration sensor; determining a space coordinate of the air mouse; correspondingly converting the determined space coordinate or variation thereof into a coordinate of the mouse pointer or variation thereof; and outputting the coordinate of the mouse pointer or the variation thereof at the set report rate so as to control the movement of the mouse pointer. By the technical scheme, the report rate can be dynamically adjusted according to actual movement conditions of the air mouse, so that the movement of the mouse pointer is controlled.

Description

technical field [0001] The invention relates to the field of positioning technology, in particular to an air mouse and a method and device for controlling the movement of the mouse pointer. Background technique [0002] At present, the positioning of the computer mouse pointer is mostly realized by optical sensors or laser sensors. These sensors are all based on the principle of physical optics, so that the sensors need to be realized by platforms such as desktops. But in many occasions, such as in computer multimedia teaching, users want to manipulate the mouse pointer in the air or realize multimedia TV playback, web browsing and other applications by manipulating the mouse pointer in the air, which cannot be realized only by using traditional sensors, so the air mouse Came into being. The air mouse is an input device that operates the screen cursor (mouse pointer) like a traditional mouse, but it does not need to be placed on any plane, and the mouse pointer can be contr...

AI Technical Summary

Problems solved by technology

However, in the prior art, either the gyro sensor measures the angular velocity of its sensitive axis and then uses the integral operation to obtain the tilt angle to determine the spatial coordinate change of the air mouse, or the acceleration sensor measures the acceleration components of each sensitive axis and then through inverse triangulation Obtaining the inclination angle by the function operation to determine the spatial coordinate change of the air mouse requires complex operations (integral operations, inverse trigonometric function operations, etc.), and most of these operations involve floating-point operations, which is very important for the processing and control of the air mouse. For chips, such as microcontrollers (MCU, Micro Control Unit), if you choose an MCU with relatively weak processing capabilities, due to its limited processing capabilities, it will consume more resources when performing complex and large-scale calculations, resulting in processing The speed is slow, it is difficult for the air mouse to output data at a high reporting rate, and it has high power consumption. If an MCU with stronger processing capability is selected, the cost will increase

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