Digital-analog conversion for shaft encoders
US4496936A · kind A · utility
9Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1982 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Jun 4, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06J1/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for producing an analog signal--having a relative amplitude that is indicative of the direction and rate of rotation of a shaft--from a pair of pulse streams provided by a shaft encoder coupled to the shaft. The invention includes circuitry for comparing the phase relationship between the signals to determine direction, for generating a digital pulse of a fixed pulse-width for each pulse contained in one of the pulse streams, and integrating the time or inverted form of the digital pulse, depending upon the determined direction, to produce the analog signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.