Scanner amplitude stabilization system
US4630223A · kind A · utility
24Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1984 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Mar 5, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1219
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Circuitry for controlling the amplitude of a self-resonant scanner including a first means for measuring the time to complete a number of full cycle scanner movements, a second means for measuring the time to complete a number of movements between a first fixed point and a second fixed point in the scan path and logic means using such time measurements to determine whether the scanner amplitude is greater or less than a desired amplitude and providing digital information to produce an analog signal for controlling the scanner amplitude to reduce any difference from the desired amplitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.