Computer graphics processing and selective visual display system – Display peripheral interface input device – Stylus
Reexamination Certificate
1997-12-23
2001-01-30
Saras, Steven J. (Department: 2775)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Stylus
C178S019010
Reexamination Certificate
active
06181329
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to tracking the position of a writing instrument, and more specifically, to calibrating a system that tracks the position of writing instrument.
BACKGROUND OF THE INVENTION
In the prior art, a number of input devices exist that allow a user to provide input to a computer or similar device. Typically, these input devices (i.e., a mouse, a touch sensitive screen or pad) are physically connected to the computer and do not allow a user to simply write the input as he or she would with a writing instrument such as a pen or a pencil. For some activities, such as sending a facsimile (faxing) or making an entry in an appointment book, it would be simpler for a user to write out a message or entry as he or she would with a writing instrument that is not physically connected to the computer rather than use prior art input devices to create a message for faxing or to enter an appointment.
In order to provide the user with a writing instrument as an input device, a system for tracking position(s) of a writing instrument must be provided. This system monitors movements of the writing instrument and converts these movements into a representation of the user input. The better the tracking system, the more accurately the user input is received. However, because the writing instrument may be used in many different environments where conditions such as altitude and temperature vary, the tracking system to track the position of the writing instrument may not perform accurately, resulting in the receipt of incorrect input. Therefore, it is desirable to calibrate the writing instrument for the environment in which the writing instrument is used.
SUMMARY OF THE INVENTION
A method and apparatus for calibrating a system that tracks the position of a writing instrument is disclosed. Multiple sensors generate outputs based on a position of the writing instrument. Sensor readings are obtained for multiple predefined positions of the writing instrument. A mapping of sensor outputs to writing instrument positions is generated based on the sensor readings at the predefined positions.
REFERENCES:
patent: Re. 29765 (1978-09-01), Crane et al.
patent: D. 362663 (1995-09-01), Nguyen
patent: 3906444 (1975-09-01), Crane et al.
patent: 3915015 (1975-10-01), Crane et al.
patent: 4241409 (1980-12-01), Nolf
patent: 4345239 (1982-08-01), Elliott
patent: 4468694 (1984-08-01), Edgar
patent: 4513437 (1985-04-01), Chainer et al.
patent: 4545018 (1985-10-01), Clements et al.
patent: 4561105 (1985-12-01), Crane et al.
patent: 4646073 (1987-02-01), Fukunaga et al.
patent: 4731857 (1988-03-01), Tappert
patent: 4737773 (1988-04-01), Kobayashi
patent: 4751741 (1988-06-01), Mochinaga et al.
patent: 4787051 (1988-11-01), Olson
patent: 4806707 (1989-02-01), Landmeier
patent: 4856077 (1989-08-01), Rothfjell
patent: 4883926 (1989-11-01), Baldwin
patent: 4988981 (1991-01-01), Zimmerman et al.
patent: 5022086 (1991-06-01), Crane et al.
patent: 5025314 (1991-06-01), Tang et al.
patent: 5027115 (1991-06-01), Sato et al.
patent: 5159321 (1992-10-01), Masaki et al.
patent: 5164585 (1992-11-01), Lieu
patent: 5181181 (1993-01-01), Glynn
patent: 5215397 (1993-06-01), Taguchi et al.
patent: 5226091 (1993-07-01), Howell et al.
patent: 5227622 (1993-07-01), Suzuki
patent: 5239292 (1993-08-01), Willan
patent: 5247137 (1993-09-01), Epperson
patent: 5294792 (1994-03-01), Lewis et al.
patent: 5296871 (1994-03-01), Paley
patent: 5371516 (1994-12-01), Toyoda et al.
patent: 5396265 (1995-03-01), Ulrich et al.
patent: 5408382 (1995-04-01), Schultz et al.
patent: 5414227 (1995-05-01), Schubert et al.
patent: 5434371 (1995-07-01), Brooks
patent: 5436792 (1995-07-01), Leman et al.
patent: 5440326 (1995-08-01), Quinn
patent: 5444192 (1995-08-01), Shetye et al.
patent: 5471226 (1995-11-01), Suzuki et al.
patent: 5477012 (1995-12-01), Sekendur
patent: 5506605 (1996-04-01), Paley
patent: 5512892 (1996-04-01), Corballis et al.
patent: 5517579 (1996-05-01), Baron et al.
patent: 5526018 (1996-06-01), Fisher
patent: 5548092 (1996-08-01), Shriver
patent: 5570109 (1996-10-01), Jenson
patent: 5583323 (1996-12-01), Zurstadt et al.
patent: 5587558 (1996-12-01), Matsushima
patent: 5587560 (1996-12-01), Crooks et al.
patent: 5657054 (1997-08-01), Files et al.
patent: 5751276 (1998-05-01), Shih
patent: 5777898 (1998-07-01), Teterwalk
patent: 5902968 (1999-05-01), Sato et al.
patent: 5953683 (1999-09-01), Hansen et al.
patent: WO 93/08542 (1993-04-01), None
patent: WO 94/09447 (1994-04-01), None
patent: WO 94/18663 (1994-08-01), None
patent: WO 95/21436 (1995-08-01), None
patent: WO 96/14633 (1996-05-01), None
“Digital pen recalls what it has written”—by Michele Clarke—Magazine article.
“Atypical mice and related devices”, Computer, IEEE Computer Society, Jun. 1995, vol. 28, No. 6, Product Reviews, pp. 92 and 94.
1997 International Conference on Communications, Chicago, ILL, USA.—“Electronic Blackboard Will Travel”—by GP Torok—pp. 19.1-5, 19.1-23 through 19.1-25.
Aeropoint User's Guide—Creative Lab—copyright Oct. 1994—pp. 1-1 and 1-3.
“The DataPen” User's Guide—Primax Electronics Ltd.—p. 1.
Angelo Michael
Stork David G.
Wolff Gregory J.
Bell Paul A.
Blakely , Sokoloff, Taylor & Zafman LLP
Ricoh & Company, Ltd.
Saras Steven J.
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