| US 7,353,112 B2 | ||
| Input system based on a three-dimensional inertial navigation system and trajectory estimation method thereof | ||
| Eun-seok Choi, Gangnam-gu (Korea, Republic of); Dong-yoon Kim, Seodaemun-gu (Korea, Republic of); Won-chul Bang, Sungnam-si (Korea, Republic of); Wook Chang, Gangnam-gu (Korea, Republic of); and Kyoung-ho Kang, Yongin-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., Suwon-si (Korea, Republic of) | ||
| Filed on Mar. 17, 2004, as Appl. No. 10/802,056. | ||
| Claims priority of application No. 10-2003-0016779 (KR), filed on Mar. 18, 2003. | ||
| Prior Publication US 2004/0236500 A1, Nov. 25, 2004 | ||
| Int. Cl. G01P 15/00 (2006.01) | ||
| U.S. Cl. 701—220 [73/1.38] | 22 Claims |
| 1. An input system based on a three-dimensional inertial navigation system and having an input part and a host device, and
for detecting motion position information corresponding to three-dimensional motions of the input part and outputting the
detected motion position information to the host device, comprising:
acceleration sensors for outputting pre-motion acceleration information, motion acceleration information, and post-motion
acceleration information;
a rotation angle information estimation-computing portion for estimating motion rotation angle information Φ, θ, and Ψ through
a predetermined computing process based on the outputted pre-motion acceleration information and post-motion acceleration
information;
a conversion-computing unit for calculating the motion position information based on the estimated motion rotation angle information
and the outputted motion acceleration information; and
an optimal plane-computing unit for projecting the motion position information onto an optimal plane.
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