Synchro/digital converter
Abstract
Abstract A SYNCHRO TO DIGITAL CONVERTER CAPABLE OF GENERATING ANGLE, SINE, AND COSINE INFORMATION IN DIGITAL WHOLE NUMBER AND INCREMENTAL FORM. SYNCHRO SIGNALS APPLIED TO THE CONVERTER ARE FIRST TRANSFORMED TO AC ANALOG FORM AND THEREAFTER TO DC ANALOG FORM. A DIGITAL COMPUTATION MEANS, SUCH AS A DIFFERENTIAL ANALYZER OR STORED PROGRAM COMPUTER, SUBSEQUENTLY OPERATES ON THE SIGNALS TO YIELD THE DESIRED INFORMATION. THE COMPUTATION MEANS IMPLEMENTS A TRIGONOMETRIC IDENTIFY AND PROVIDES AN ERROR SIGNAL WHICH IS USED TO VARY THE OUTPUT UNTIL THE ERROR IS REDUCED TO ZERO. THE COMPUTATION MEANS AUTOMATICALY COMPENSATES FOR ANY SCALE FACTOR ERRORS INTRODUCED IN THE ANALOG PORTION OF THE CONVERTER PRIOR TO THE COMPUTATION MEANS.
Inventors
- 👤 Gilbert P Hyatt
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |