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다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0405087 (1995-03-16) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 371 인용 특허 : 0 |
A microcomputer-assisted position finding system that integrates GPS data, dead reckoning sensors, and digital maps into a low-cost, self-contained navigation instrument is disclosed. A built-in radio frequency transponder allows individual positions to be monitored by a central coordinating facilit
A microcomputer-assisted position finding system that integrates GPS data, dead reckoning sensors, and digital maps into a low-cost, self-contained navigation instrument is disclosed. A built-in radio frequency transponder allows individual positions to be monitored by a central coordinating facility. Unique dead reckoning sensors and features are disclosed for ground speed/distance measurement and computer-aided position fixes.
A method of determining displacement of a user on foot, the method comprising the following steps: generating a set of accelerations corresponding to foot impacts of the user on a surface; determining a peak acceleration in the set of accelerations; comparing the peak acceleration to a predetermined
A method of determining displacement of a user on foot, the method comprising the following steps: generating a set of accelerations corresponding to foot impacts of the user on a surface; determining a peak acceleration in the set of accelerations; comparing the peak acceleration to a predetermined minimum threshold value; comparing, if the peak acceleration is above the predetermined minimum threshold value, a period of time from a previously detected footstep to the determined peak acceleration; determining whether the period of time is greater than a predetermined minimum threshold period of time; storing the determined peak acceleration as a detected footstep, if the period of time is determined to be greater than the predetermined minimum threshold period of time; and multiplying stored detected footsteps by a scale factor to thereby determine the displacement of the user on foot.
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