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Pre-loaded force sensor

a force sensor and pre-loaded technology, applied in the field of interactive paper and printing systems, can solve the problems of prohibitively difficult positioning of force sensors and replaceable cartridges with sufficient accuracy, and commercially impractical for mass produced articles, so as to avoid the need to remove the force sensor, increase the capacity, and reduce the effect of force sensor removal

Inactive Publication Date: 2006-02-09
SILVERBROOK RES PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] By keeping the input member biased against the load bearing structure of the sensor, accurately mounting the sensor next to the input member is no longer an issue. The biasing mechanism can be a simple spring structure while still providing a suitably consistent biasing force. Such a mechanism has relatively low production costs and avoids the need to adhere to fine tolerances.
[0102] By configuring the pen chassis and cartridge so that it can be inserted and removed from the side rather than through the ends, the capacity of the cartridge can be significantly increased. An enlarged section between the ends of the ink cartridge increases the capacity while allowing the relatively thin ends to be supported at the nib molding and opposing end of the pen chassis. In a Netpage pen, inserting the cartridge from the side avoids the need to remove the force sensor when replacing the cartridge. Again, the thinner sections at each end of the cartridge allow it to engage a ball point nib supported in the nib molding and directly engage the force sensor at the other end, while the enlarged middle portion increases the ink capacity.

Problems solved by technology

With a full span movement of sensor being relatively small (typically less than 50 microns), positioning the force sensor and the replaceable cartridge with sufficiently accuracy can be prohibitively difficult and commercially impractical for a mass produced article.

Method used

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Examples

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Embodiment Construction

[0160] As discussed above, the invention is well suited for incorporation in the Assignee's Netpage system. In light of this, the invention has been described as a component of a broader Netpage architecture. However, it will be readily appreciated that electronic styli have much broader application in many different fields. Accordingly, the present invention is not restricted to a Netpage context.

Netpage Surface Coding

Introduction

[0161] This section defines a surface coding used by the Netpage system (described in co-pending application Docket No. NPS110US as well as many of the other cross referenced documents listed above) to imbue otherwise passive surfaces with interactivity in conjunction with Netpage sensing devices (described below).

[0162] When interacting with a Netpage coded surface, a Netpage sensing device generates a digital ink stream which indicates both the identity of the surface region relative to which the sensing device is moving, and the absolute path of th...

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PUM

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Abstract

A force sensor comprising: a load bearing structure for contact with an input member subject to a force to be sensed; a sensor circuit for converting a force applied to the load bearing structure into a signal indicative of the force; and, a pre-load bias assembly for engaging the input member to bias it against the load bearing structure.

Description

FIELD OF THE INVENTION [0001] The present invention relates to the fields of interactive paper, printing systems, computer publishing, computer applications, human-computer interfaces using styli with force sensors and information appliances. CO-PENDING REFERENCESNPS101USNPS108USNPS110USCROSS-REFERENCES10 / 81562110 / 81561210 / 81563010 / 81563710 / 81563810 / 81564010 / 81564210 / 81564310 / 81564410 / 81561810 / 81563910 / 81563510 / 81564710 / 81563410 / 81563210 / 81563110 / 81564810 / 81564110 / 81564510 / 81564610 / 81561710 / 81562010 / 81561510 / 81561310 / 81563310 / 81561910 / 81561610 / 81561410 / 81563610 / 81564911 / 04165011 / 04165111 / 04165211 / 04164911 / 04161011 / 04160911 / 04162611 / 04162711 / 04162411 / 04162511 / 04155611 / 04158011 / 04172311 / 04169811 / 04164810 / 81560910 / 81562710 / 81562610 / 81561010 / 81561110 / 81562310 / 81562210 / 81562910 / 81562510 / 81562410 / 81562810 / 91337510 / 91337310 / 91337410 / 91337210 / 91337710 / 91337810 / 91338010 / 91337910 / 91337610 / 91338110 / 986402IRB013US11 / 17281511 / 17281410 / 40987610 / 40984810 / 40984511 / 08476911 / 08474211 / 08480609 / 575197...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G09G5/00G02B30/27
CPCG02B26/06G02B27/017G02B2027/0123G06F3/0321G02B2027/0187G06F3/011G06F3/013G02B2027/014G02B27/0093H04N13/344G02B30/27G06F3/03545
Inventor UNDERWOOD, MATTHEW JOHNKING, TOBIN ALLENLAPSTUN, PAULSILVERBROOK, KIA
Owner SILVERBROOK RES PTY LTD
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