US3400391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolation device
Assignee: Carl Zeiss AG
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Filing: 1964-10-29
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Granted: 1968-09-03
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Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Rantsch Kurt
- 👤 Trotscher Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:15
CPC Classifications
H; H03; H03M; H03M1/00; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; H03K; H03K5/00; H03K5/22; H03K5/26; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37296; H03M1/12; H03M1/20; H03M1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN AN INTERPOLATION DEVICE FOR THE DIGITAL INTERPOLATION OF MEASURING VALUES WHICH ARE SUPPLIED BY A LENGTH OR ANGLE MEASURING INSTRUMENT, A SIGNAL IMPARTING DEVICE INCLUDING MEANS FOR PRODUCING TWO SEPARATE SINUSOIDAL PRIMARY SIGNALS WHICH ARE PHASE DISPLACED ABOUT 90* A CATHODE RAY TUBE HAVING A DEFLECTION SYSTEM AND A PICTURE SCREEN, MEANS FOR AMPLIFYING SAID PRIMARY SIGNALS AND FEEDING THE SAME TO SAID DEFLECTION SYSTEM OF SAID CATHODE RAY TUBE, SAID DEFLECTION SYSTEM BEING SO ARRANGED THAT THE ELECTRON BEAM IN SAID CATHODE RAY TUBE ROTATES CONTINUOUSLY ONCE IN A COMPLETE CLOSED PATH DURING EACH SIGNAL PERIOD OF SAID PRIMARY SIGNALS AND PRODUCES AN ANNULAR LUMINOUS IMAGE ON SAID PICTURE SCREEN, SCREEN MEAN ASSOCIATED WITH SAID PICTURE SCREEN AND COMPOSED OF LIGHT TRANSMISSIVE AND OPAQUE ZONES FOR SUBDIVIDING SAID ANNULAR IMAGE INTO DISCRETE INTERPOLATION STEPS AND SECONDARY SIGNALS ADAPTED TO BE USED FOR DIGITAL INDICATION.
Claim 2
Dependent Claim
146 words
IN AN INTERPOLATION DEVICE FOR THE DIGITAL INTERPOLATION OF MEASURING VALUES WHICH ARE SUPPLIED BY A LENGTH OR ANGLE MEASURING INSTRUMENT, A SIGNAL IMPARTING DEVICE INCLUDING MEANS FOR PRODUCING TWO SEPARATE SINUSOIDAL PRIMARY SIGNALS WHICH ARE PHASE DISPLACED ABOUT 90* A CATHODE RAY TUBE HAVING A DEFLECTION SYSTEM AND A PICTURE SCREEN, MEANS FOR AMPLIFYING SAID PRIMARY SIGNALS AND FEEDING THE SAME TO SAID DEFLECTION SYSTEM OF SAID CATHODE RAY TUBE, SAID DEFLECTION SYSTEM BEING SO ARRANGED THAT THE ELECTRON BEAM IN SAID CATHODE RAY TUBE ROTATES CONTINUOUSLY ONCE IN A COMPLETE CLOSED PATH DURING EACH SIGNAL PERIOD OF SAID PRIMARY SIGNALS AND PRODUCES AN ANNULAR LUMINOUS IMAGE ON SAID PICTURE SCREEN, SCREEN MEAN ASSOCIATED WITH SAID PICTURE SCREEN AND COMPOSED OF LIGHT TRANSMISSIVE AND OPAQUE ZONES FOR SUBDIVIDING SAID ANNULAR IMAGE INTO DISCRETE INTERPOLATION STEPS AND SECONDARY SIGNALS ADAPTED TO BE USED FOR DIGITAL INDICATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |