Encoded echo-ranging signal generator
US3958214A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1963 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Jul 19, 1983 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04K1/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
1. An encoded echo-ranging signal generator comprising in combination; PA1 A digital shift register having a plurality of binary encoded stages, PA1 A shift pulse generator coupled to said digital shift register for the tiy shifting thereof, PA1 An anti-coincidence circuit having a pair of inputs and an output with one of said inputs being connected to a predetermined stage of said digital shaft register and the other input thereof coupled to the output of said digital shift register and with the output thereof connected to the input of said digital shaft register, to randomly recirculate through said register the binary contents of said encoded stages, PA1 An echo-ranging system coupled to the output of said digital shift register, PA1 And a digital message encoder coupled to said digital shift register for the respective binary bit encoding of each stage thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.