Device for transmitting signals by radio and cable between a central control and recording system and data acquisition devices
US4979152A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1983 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Dec 22, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a data acquisition for seismic exploration, where the terrain is rugged or includes natural features which prohibit satisfactory radio communication between a central control and recording system and a plurality of seismic data signal acquisition devices, a relay element and a transmission cable are provided so that those acquisition devices which are not capable of satisfactory radio communication with the central control and recording system communicate instead with the relay element either by transmission cable or radio transmission and the relay element in turn communicates with the central control and recording system either by radio transmission or transmission cable, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.