| 摘要 |
A relative positioning system enabling a user to return to a starting position or some other point on the user's path. The system may include an array of accelerometers. The output from the accelerometers may be integrated to quantify movement of the array. The various movements of the array may be reconstructed to determine a net two or three dimensional translation. The current location of the array may be compared to a reference point to derive at trajectory directing the user to the reference point, such as an originating point. The trajectory may be continuously or periodically updated. Applications may include various displays presenting images, numbers, pointers, paths, vectors, or data by digital screens, watch faces, or other devices integrated with or remote from the processor calculating the vector back to the point of origin. |
| 主权项 |
1. A user-portable, self-contained, homing apparatus comprising:
a processor; memory operably connected to the processor; an array of accelerometers oriented to detect acceleration in at least two of transverse, longitudinal, and lateral directions; the array operably connected to the processor to deliver a signal substantially continually to the processor; and the processor substantially continually calculating, based exclusively on the signal, a direction to a fixed point. |
