| US 7,463,250 B2 | ||
| System for determining the rotational orientation of a sensing device | ||
| Paul Lapstun, Balmain (Australia); and Kia Silverbrook, Balmain (Australia) | ||
| Assigned to Silverbrook Research Pty Ltd, Balmain, New South Wales (Australia) | ||
| Filed on Jun. 06, 2005, as Appl. No. 11/144,840. | ||
| Application 11/144840 is a continuation of application No. 09/722088, filed on Nov. 25, 2000, granted, now 7,105,753. | ||
| Application 09/722088 is a continuation in part of application No. 09/575168, filed on May 23, 2000, granted, now 6,737,591. | ||
| Claims priority of application No. PQ0559 (AU), filed on May 25, 1999; application No. PQ1312 (AU), filed on Jun. 30, 1999; and application No. PQ1313 (AU), filed on Jun. 30, 1999. | ||
| Prior Publication US 2005/0225541 A1, Oct. 13, 2005 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G06F 3/033 (2006.01) | ||
| U.S. Cl. 345—179 [345/173; 345/176; 178/18.03; 178/19.01; 178/19.05] | 21 Claims |
| 1. A system comprising a sensing device and a surface having coded data disposed thereon, the system being arranged for determining
at least two dimensions of the rotational orientation of the sensing device relative to the surface, wherein:
the coded data is indicative, when sensed by the sensing device, of the at least two dimensions of the rotational orientation
of the sensing device; and
the sensing device includes:
an orientation sensor configured to generate, when positioned or moved relative to the surface, using at least some of the
coded data, orientation data indicative of the at least two dimensions of the orientation of the sensing device relative to
the surface; and
a transmitter for transmitting the orientation data to a computer system.
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