Method and system for digital pen assembly

Abstract

A receiving unit for receiving an acoustic signal from a digital pen, comprises: a housing; at least two ultrasound receivers, for receiving ultrasound signals from the digital pen, the ultrasound receivers comprising electret microphones, the electret microphones being located in location holes in the housing; and an electric circuit connected to said electret microphones, to extract ultrasound signals received by the ultrasound receivers. An attachment device may removably attach the receiving unit to another item.

Description

RELATED APPLICATION / S[0001]This application is a divisional of U.S. patent application Ser. No. 11 / 884,894 filed on Aug. 22, 2007, which is a National Phase of PCT Patent Application No. PCT / IL2006 / 000373 filed on Mar. 23, 2006, which claims priority of U.S. Provisional Patent Application No. 60 / 664,202 filed on Mar. 23, 2005. The contents of the above applications are incorporated herein by reference.FIELD AND BACKGROUND OF THE INVENTION[0002]The present invention relates to acoustic positioning methods, and more particularly, but not exclusively to a method and an apparatus for data entry using an acoustic signal transmitting pen input device.[0003]Digital writing instruments, interchangeably referred to herein as Digital Pens, regardless of whether they actually write on paper, can be used to capture pen strokes on paper and digitize them.[0004]For example, with a digital pen, pen strokes may be converted by handwriting recognition software to a digitally stored record of the wri...

AI Technical Summary

Problems solved by technology

However, there are inherent problems in current acoustical technology and in the implementation of the current acoustical technology in digital pens, such as the digital pens described in the patents cited hereinabove.

Among the disadvantages of current acoustic technology are: lack of accuracy, lack of multi-devices support, high power consumption, etc.

The problems have implications on the mechanical design of existing data entry using an acoustic impulse transmitting devices.

Apart from that, there are manufacturing problems related to the assembly of the acoustic transmitter and its incorporation in a digital pen or the like.

For instance, such problems may arise in connecting an acoustic transmitter to a flexible printed circuit board (PCB).

There are also marketing issues, such as differentiation between products by changing their appearance, while keeping the functional parts the same.

Images