Advanced frequency calibration

Details Advanced frequency calibration Advanced frequency calibration

2007-01-03

2011-12-27

Wang, Quan-Zhen (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S178000, C178S018060, C178S019070, C324S519000, C324S674000, C324S675000, C324S667000

Reexamination Certificate

active

08085247

ABSTRACT:
An oscillating signal of relatively precise frequency is generated by tuning an oscillator using an external stable oscillating source as a reference. Calibration logic is included to compare a signal from the local oscillator to the reference signal and vary the local signal to a desired frequency. In one embodiment, a binary search algorithm is used to tune the local oscillator. The local oscillating signal can be sent to one or more circuits including at least one sensor of a touch sensitive panel for detecting touch events.

REFERENCES:
patent: 4630217 (1986-12-01), Smith et al.
patent: 5483201 (1996-01-01), Bortolini
patent: 5483261 (1996-01-01), Yasutake
patent: 5488204 (1996-01-01), Mead et al.
patent: 5790107 (1998-08-01), Kasser et al.
patent: 5801340 (1998-09-01), Peter
patent: 5825352 (1998-10-01), Bisset et al.
patent: 5835079 (1998-11-01), Shieh
patent: 5854450 (1998-12-01), Kent
patent: 5880411 (1999-03-01), Gillespie et al.
patent: 6184871 (2001-02-01), Teres et al.
patent: 6188391 (2001-02-01), Seely et al.
patent: 6310610 (2001-10-01), Beaton et al.
patent: 6323846 (2001-11-01), Westerman et al.
patent: 6583676 (2003-06-01), Krah et al.
patent: 6690387 (2004-02-01), Zimmerman et al.
patent: 6968017 (2005-11-01), Nielsen
patent: 7015894 (2006-03-01), Morohoshi
patent: 7095922 (2006-08-01), Fukuyama et al.
patent: 7139530 (2006-11-01), Kusbel
patent: 7184064 (2007-02-01), Zimmerman et al.
patent: 7663607 (2010-02-01), Hotelling et al.
patent: 7859522 (2010-12-01), Takahashi et al.
patent: 2003/0164820 (2003-09-01), Kent
patent: 2006/0026521 (2006-02-01), Hotelling et al.
patent: 2006/0097991 (2006-05-01), Hotelling et al.
patent: 2006/0197753 (2006-09-01), Hotelling
patent: 2008/0088594 (2008-04-01), Liu et al.
patent: 2008/0157882 (2008-07-01), Krah
patent: 2008/0158172 (2008-07-01), Hotelling et al.
patent: 2000-163031 (2000-06-01), None
patent: 2002-342033 (2002-11-01), None
Lee, S.K. et al. (Apr. 1985). “A Multi-Touch Three Dimensional Touch-Sensitive Tablet,”Proceedings of CHI: ACM Conference on Human Factors in Computing Systems, pp. 21-25.
Rubine, D.H. (Dec. 1991). “The Automatic Recognition of Gestures,” CMU-CS-91-202, Submitted in Partial Fulfillment of the Requirements of the Degree of Doctor of Philosophy in Computer Science at Carnegie Mellon University, 285 pages.
Rubine, D.H. (May 1992). “Combining Gestures and Direct Manipulation,” CHI '92, pp. 659-660.
Westerman, W. (Spring 1999). “Hand Tracking, Finger Identification, and Chordic Manipulation on a Multi-Touch Surface,” A Dissertation Submitted to the Faculty of the University of Delaware in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Electrical Engineering, 364 pages.

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