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Automatic Switching system for contact-free input device and contact input device.

IP.com Disclosure Number: IPCOM000132128D
Original Publication Date: 2005-Dec-02
Included in the Prior Art Database: 2005-Dec-02
Document File: 1 page(s) / 42K

Publishing Venue

IBM

Abstract

Disclosed is a system for the distinction of an input device type (a contact free or a contact device) and an autocratical process of input data from the input device which a user intended to use as a correct input data. Using the disclosed system, a computer which has both a contact input device like a touch panel and a contact-free input device like a digitizer can recognize which input device is used correctly.

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Automatic Switching system for contact -free input device and contact input device .

Disclosed is a system for the distinction of an input device type (a contact free or a contact device) and an autocratical process of input data from the input device which a user intended to use as a correct input data. Using the disclosed system, a computer which has both a contact input device like a touch panel and a contact-free input device like a digitizer can recognize which input device is used correctly.

This system consists of a touch panel, an electromagnetic resonance digitizer, an input data decision processor( Decision Processor) and a CPU. The touch panel, contact device, is operated by a finger, and the digitizer, contact-free device, is operated by a pen which is designed for the digitizer.

The digitizer has "a hovering function" that can detect the X-Y coordinate of the pen position even if the pen is not contacted to the touch panel and just hovering on the touch panel . And it has an output signal (Detection signal) that turns to be active when the pen is located in the detectable area.

When Decision Processor receives Detection signal, it judges that the pen is approaching and the user is going to write with a pen. Therefore, even if the pen is just hovering on the touch panel, it is not going to send the touch panel position coordinate to the CPU and only to send the pen position coordinate to the CPU.

Using this system, if users touch the touch panel to wr...