Portable radio signal detecting system
US5534872A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1994 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Jun 22, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a radio signal detecting system, an antenna is rotatably mounted on a wrist watch type case, and this antenna is manually rotated to receive a radio signal reflected from a target to be distance-measured every time the antenna is rotated by a preselected rotation angle. The reflected radio signal is digitally converted into field strength data, or distance data. These field strength data, or distance data are sequentially stored into a memory circuit in correspondence with the rotation angle of the antenna. Since the data stored into the memory circuit at every rotation angle for the antenna are displayed on a liquid crystal display unit, the radio signal detecting system can be made compact and operated under low power consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.