Combinatorial coded telemetry in MWD
US4908804A · kind A · utility
40Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Jun 28, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4902
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A unipolar, RZ, constant width pulse telemetry is achieved in the combinatorial set, or any desired subset of pulse sequences thereof. Each input datum W is in one-to-one correspondence with a particular pulse sequence and the correspondence of datum with pulse sequence and vice versa is implemented by any selected ordering of the pulse sequences of the combinatorial set together with a successive comparison of the magnitude of the datum with the cumulative combinatorial capacity of the set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.