Puck-type pointing apparatus, pointing system, and pointing method

Abstract

The present invention discloses a puck-type pointing apparatus, a pointing system, and a pointing method. The apparatus comprises: a movement-sensing unit which senses an object that is brought into contact with a puck and moved, and outputs a movement sensed signal; a first filter unit which receives the movement sensed signal, filters the received signal to remove noise, and outputs a first puck movement signal which is delayed by a first period of time; a second filter unit which receives the movement sensed signal, filters the received signal to remove noise, and outputs a second puck movement signal which is delayed by a second period of time shorter than said first period of time; and a puck movement signal transfer unit which transfers or cuts off the first puck movement signal in response to the second puck movement signal according to the movement information. The present invention can easily detect the point in time when the object contacts the puck and stops the movement of the puck in the event the puck moves and returns to the original position thereof when the object is removed from the puck, thereby preventing an erroneous operation of the pointing apparatus caused by the continuous movement of a cursor.

Description

technical field [0001] The present invention relates to a pointer device, a pointer system and a pointer method, in particular to a rubber disc type that can quickly and accurately move the position of the cursor (cursor) on a display connected to the pointer device according to the position information of the rubber disc. (puck-type) pointing devices, pointing systems, and pointing methods. Background technique [0002] Conventional pointing devices used to control the position of a cursor on a display include arrow keys, function keys, mice, track balls, Joysticks, touch screens, light pens, tablets, and other similar devices. [0003] Although these past pointing devices are generally able to meet a variety of applications, the pointing devices must operate in a limited workspace and conform to electronic devices (such as laptop computers (laptop computers), personal digital assistants (personal digital assistants, PDAs), Given the form factor of wired or wireless telep...

AI Technical Summary

Problems solved by technology

However, even when the user's finger leaves the rubber puck after moving the rubber puck to return the rubber puck to the original position, the pointing device cannot accurately detect the contact of the rubber puck and the point when the movement stops. t0, this is the time T2 required for the attenuation of the rubber puck movement signal mov due to the time T1 that needs to be delayed by the filter unit 15 and the characteristics of the filter output

[0042] So far it has been assumed that the rubber puck is floating so that contact with the rubber puck results in increased capacitance, but since the rubber puck is connected to ground potential, a quivering touch of the cursor is necessarily required In time, the noise in the motion detection signal m_det may also be reduced

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