Device and method for detecting movement using proximity sensor

Abstract

A device for detecting movement for detecting the movement of an object on a touch area comprises: three or more proximity sensors, which are two-dimensionally and separately arranged on the touch area, each of the proximity sensors for measuring electric scalars which correspond to the distance to the object on the touch area; and a control unit for calculating the vector of a second touch position, which is modified in relation to a first touch position, using a first electric scalar and a second electric scalar that are measured with a predetermined time difference therebetween, thereby calculating the movement of the object in terms of the vector to generate a movement signal.

Description

technical field [0001] The present invention relates to a movement detection device and a movement detection method, and in particular to a movement detection device and a movement detection method which calculate the movement of an object with a relative vector relative to a reference point using a proximity sensor and generate a movement signal. Background technique [0002] Generally, a personal portable terminal such as a mobile phone or a PDA (Personal Digital Assistants, personal digital assistant) adopts a user interface using a keypad (keypad). Specifically, a conventional personal portable terminal has a keypad composed of a plurality of keys for inputting numbers and characters, and the user is allowed to input a telephone number, characters, etc. through the keys of the keypad. [0003] Recently, with the popularization of wireless network services, personal portable terminals are also using a Windows operating system (such as Windows CE) that supports a GUI (Grap...

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Problems solved by technology

[0006] Although there is a light pointing device for changing the direction in a personal portable terminal, it is difficult to ensure a certain thickness and lens barrel if the light pointing device is to ensure the path of light movement, so it is difficult to achieve a specific thickness and length. Adding a mechanism for detecting pressing has the disadvantage that the structure becomes quite complicated

Also, in the light pointing device, components such as a light source for irradiating light to a subject, an image sensor for analyzing light, and a prism as an optical path for guiding light reflected from a subject to the image sensor are also used. Became the reason for increasing the thickness of the personal portable terminal itself

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