US3283133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the optical cross-correlation of two functions
Assignee: Geophysical Research Corp
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Filing: 1963-01-09
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Granted: 1966-11-01
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Expires: 1983-01-09
Abstract
No abstract record available.
Inventors
- 👤 Harold S Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:50
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/36; G01V1/37; G01V1/375; G06; G06E; G06E3/00; G06E3/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE METHOD OF OPTICALLY CROSS-CORRELATING TWO FUNCTIONS COMPRISING PREPARING TWO DUAL TRACK VARIABLE DENSITY FILM STRIP REPRESENTATIONS, EACH OF SAID STRIPS HAVING A FIRST AND SECOND TRACK RELATING TO A DIFFERENT ONE OF SAID FUNCTIONS WITH THE CORRESPONDING PORTIONS OF THE FIRST AND SECOND TRACKS AS DEFINED BY THE FUNCTION BEING ALIGNED WITH RESPECT TO ONE ANOTHER, EACH OF SAID STRIPS ALIGNED THE DENSITY OF THE FIRST TRACK IN DIRECT PROPORTION TO AND THE DENSITY OF A SECOND TRACK IN INVERSE PROPORTION TO A DIFFERENT ONE OF SAID FUNCTIONS, PLACING SAID FILM STRIPS IN OVERLYING RELATION, PASSING LIGHT THROUGH SAID OVERLYING FILM STRIPS, MOVING ONE OF SAID FILM STRIPS OVER THE OTHER WHILE IN SAID OVERLYING RELATION, AND RECORDING THE LIGHT TRANSMITTED THROUGH SAID STRIPS DURING SAID MOTION, AS A FUNCTION OF THE RELATIVE DISPLACEMENT BETWEEN SAID STRIPS.
Claim 2
Independent Claim
138 words
THE METHOD OF OPTICALLY CROSS-CORRELATING TWO FUNCTIONS COMPRISING PREPARING TWO DUAL TRACK VARIABLE DENSITY FILM STRIP REPRESENTATIONS, EACH OF SAID STRIPS HAVING A FIRST AND SECOND TRACK RELATING TO A DIFFERENT ONE OF SAID FUNCTIONS WITH THE CORRESPONDING PORTIONS OF THE FIRST AND SECOND TRACKS AS DEFINED BY THE FUNCTION BEING ALIGNED WITH RESPECT TO ONE ANOTHER, EACH OF SAID STRIPS ALIGNED THE DENSITY OF THE FIRST TRACK IN DIRECT PROPORTION TO AND THE DENSITY OF A SECOND TRACK IN INVERSE PROPORTION TO A DIFFERENT ONE OF SAID FUNCTIONS, PLACING SAID FILM STRIPS IN OVERLYING RELATION, PASSING LIGHT THROUGH SAID OVERLYING FILM STRIPS, MOVING ONE OF SAID FILM STRIPS OVER THE OTHER WHILE IN SAID OVERLYING RELATION, AND RECORDING THE LIGHT TRANSMITTED THROUGH SAID STRIPS DURING SAID MOTION, AS A FUNCTION OF THE RELATIVE DISPLACEMENT BETWEEN SAID STRIPS.
References Cited (Backward Citations)
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Cited
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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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |