Differential signal decoder
US4467253A · kind A · utility
0Cited by
7References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1982 |
| Grant date | Aug 21, 1984 |
| Priority date | — |
| Expiry date | Jan 5, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59688
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A decoder decodes and accurately scales so-called "tribit" servo signals after the receipt of only one tribit pattern without the use of A.G.C. by storing the peak values of the position indicating pulses the capacitors in first and second peak-and-hold circuits and thereafter discharging both capacitors with the same time constant, activating a sample-and-hold circuit to hold the value of the output of a difference amplifier at the instant when the output of a summing amplifier falls below a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.