System and method for detection of motion
US6964640B2 · kind B2 · utility
11Cited by
48References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2003 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Jan 22, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
As part of the present invention, a motion detector for detecting motion inside of a body may include a first oscillator to produce an electrical scanning signal and a second oscillator to produce an electrical Doppler signal. A vibrating element may vibrate in response to the scanning and Doppler signals. A vibration transducer may receive vibrations reflected from a structure inside the body and may convert the reflected vibrations into an electrical signal. Doppler shifts between the transmitted and received vibrations may be used to estimate the velocity of the structure inside the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.