US3620591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical processing of data
Assignee: Atlantic Richfield Co
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Filing: 1969-07-22
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Granted: 1971-11-16
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Expires: 1989-07-22
Abstract
Abstract A method and apparatus for optically processing seismic or other data by spatial filtering in order to discriminate against optical noise and enhance recoverable information. Optical elements acting on the seismic signals are mounted in special assemblies and rotated at different angular velocities with respect to one another. A series of partial exposures are made of the output information at selected time intervals and added to give a composite exposure. Also disclosed is a preferred process for preparing spatial filters by photographic reduction.
Inventors
- 👤 Emmet D Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:15
CPC Classifications
G; G06; G06E; G06E3/00; G06E3/001; G02; G02B; G02B27/00; G02B27/42; G02B27/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A method for optically processing signals by spatial filtering comprising synchronously rotating the optical elements acting on the signals at different angular velocities, recording a partial exposure of the output information at each of a preselected number of incremental rotational steps, and adding the resulting partial exposures to produce a composite exposure characterized by an improved signal to optical noise ratio.
Claim 2
Independent Claim
61 words
A method for optically processing signals by spatial filtering comprising synchronously rotating the optical elements acting on the signals at different angular velocities, recording a partial exposure of the output information at each of a preselected number of incremental rotational steps, and adding the resulting partial exposures to produce a composite exposure characterized by an improved signal to optical noise ratio.
Claim 3
Independent Claim
61 words
A method for optically processing signals by spatial filtering comprising synchronously rotating the optical elements acting on the signals at different angular velocities, discontinuing rotation at predetermined time intervals, recording a partial exposure of the output information at each rotational pause, and adding the resulting partial exposures to produce a composite exposure characterized by an improved signal to optical noise ratio.
Claim 4
Independent Claim
61 words
A method for optically processing signals by spatial filtering comprising synchronously rotating the optical elements acting on the signals at different angular velocities, discontinuing rotation at predetermined time intervals, recording a partial exposure of the output information at each rotational pause, and adding the resulting partial exposures to produce a composite exposure characterized by an improved signal to optical noise ratio.
Claim 5
Dependent Claim
100 words
In apparatus for optically processing signals by spatial filtering having a source of coherent light, a photographic shutter, a transparency containing input information, vArious optical elements, and image detector means, the improvement comprising automatic cocking and release means connected to said shutter, rotatable mounts for certain of said optical elements, synchronous motors for driving each of said mounts, first and second rotary switch means for actuating said cocking and release means and said synchronous motors, an electric motor for synchronously rotating said first and second switch means, and an interval timer to shut off said apparatus after a predetermined time.
Claim 6
Dependent Claim
100 words
In apparatus for optically processing signals by spatial filtering having a source of coherent light, a photographic shutter, a transparency containing input information, vArious optical elements, and image detector means, the improvement comprising automatic cocking and release means connected to said shutter, rotatable mounts for certain of said optical elements, synchronous motors for driving each of said mounts, first and second rotary switch means for actuating said cocking and release means and said synchronous motors, an electric motor for synchronously rotating said first and second switch means, and an interval timer to shut off said apparatus after a predetermined time.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |