Patent US3793506A successfully refreshed from Google Patents.
US3793506A
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Navigational process and device for path control
Assignee: Safran Aircraft Engines SAS
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Filing: 1965-07-21
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Granted: 1974-02-19
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Expires: 1985-07-21
Abstract
Abstract A contour map reading and recording process wherein different colors, voltages, design characteristics or other physical features are imparted to increasing and decreasing altitude sections of the map as discriminated along a selected reading direction across it, said different physical features being sensed while moving across said map along said reading direction and translated into binary-coded data to be stored in a memory.
Inventors
- 👤 J Deschamps
- 👤 J Durand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:15
CPC Classifications
G; G06; G06T; G06T17/00; G06T17/05; G01; G01C; G01C21/00; G01C21/005; G06T1/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A process for automatically recording binary-coded data representative of the relief of a surveyed terrain designed as a contour map, said process comprising the steps of: selecting a reading direction across said contour map, discriminating thereon, along said direction, increasing altitude sections from decreasing altitude sections, imparting different physical features to said increasing altitude sections and to said decreasing altitude sections, sensing said different physical features while moving across said contour map along said reading direction, translating said sensed different physical features into binarycoded data by emitting one binary digit upon an increasing altitude being sensed and the other binary digit upon a decreasing altitude being sensed, and storing said binary-coded data.
Claim 2
Dependent Claim
112 words
A process for automatically recording binary-coded data representative of the relief of a surveyed terrain designed as a contour map, said process comprising the steps of: selecting a reading direction across said contour map, discriminating thereon, along said direction, increasing altitude sections from decreasing altitude sections, imparting different physical features to said increasing altitude sections and to said decreasing altitude sections, sensing said different physical features while moving across said contour map along said reading direction, translating said sensed different physical features into binarycoded data by emitting one binary digit upon an increasing altitude being sensed and the other binary digit upon a decreasing altitude being sensed, and storing said binary-coded data.
Claim 3
Dependent Claim
13 words
A process as claimed in claim 1, wherein said physical features are tints.
Claim 4
Dependent Claim
32 words
A process as claimed in claim 2, wherein said tints are black and white, one of these two tints being applied to increasing altitude sections and the other to decreasing altitude sections.
Claim 5
Dependent Claim
56 words
A process as claimed in claim 3, comprising the steps of designing in black and white a plurality of different contour mAps of the same surveyed terrain in accordance with a plurality of different reading directions, photographing said contour maps, reproducing the photographs thus obtained in the form of a microfilm, and reading the micro-photographs thereon.
Claim 6
Dependent Claim
25 words
A process as claimed in claim 4, wherein the step of reading the micro-photographs is carried out by the so-called ''''flying-spot'''' cathode ray tube scanning.
Claim 7
Dependent Claim
27 words
A process as claimed in claim 1, wherein said physical features are bias voltages of varying magnitudes according as the altitudes designed on said contour map vary.
Claim 8
Dependent Claim
34 words
A process as claimed in claim 6, wherein said contour map is a printed circuit with electric conductive lines representing contour lines of the map, and said bias voltages are applied to said lines.
References Cited (Backward Citations)
US3038656A
Cited
US2876562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |