GPS receiver powered by interface signals
US5848376A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Nov 13, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A Global Positioning System (GPS) receiving apparatus that is powered by a control or data interface signal from a computing apparatus. The GPS receiving apparatus includes a GPS receiver for receiving GPS satellite signals and providing GPS-derived location information and a converter for converting the interface signal to operating power signal for operating the GPS receiver. Optionally, the GPS receiver includes a power controller for controlling a duty cycle of the operating power in the GPS receiver in order to not exceed the power available from the interface signal. The interface signal is transmitted according to an interface standard such as RS232, RS422, or PC parallel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.