US3792423A
Expired / Lapsed
US
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Isometric imaging system
Assignee: United States Atomic Energy Commission
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Filing: 1972-05-24
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Granted: 1974-02-12
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Expires: 1992-05-24
Abstract
Abstract An isometric imaging system for effecting the projection of a three-dimensional coordinate system onto the horizontal and vertical plane of a conventional display scope is provided. The system provides for displaying both spatial and depth information by the novel transformation of the time coordinates of the scanned field, which contains the object, to the horizontal and vertical coordinates of the display scope. In one embodiment a novel sample and hold circuit is provided for processing data on tapes at playback factors greater than 10.
Inventors
- 👤 F Becker
- 👤 R Trantow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/88; G01S15/89; G01S15/8906; G01S15/8977; G01N; G01N29/00; G01N29/04; G01N29/06; G01N29/0609; G01N29/0645
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
An isometric imaging system for displaying a viewed object comprising: a. means for generating and detecting signals incident to and reflected from said object; b. means for generating X, Y, and Z output voltages corresponding to the coordinate position of said object; c. means for electronically generating coordinates corresponding to an isometric projection of said object from said X, Y, and Z output voltages; d. means for varying the angular perspective of said isometric projection; e. means for displaying said isometric projection; and f. means for magnetically recording and playing back the signals corresponding to the isometric projection of said object, so that in conjunction with said means for varying the angular perspective of said isometric projection, alternate angular perspectives can be readily displayed.
Claim 2
Dependent Claim
124 words
An isometric imaging system for displaying a viewed object comprising: a. means for generating and detecting signals incident to and reflected from said object; b. means for generating X, Y, and Z output voltages corresponding to the coordinate position of said object; c. means for electronically generating coordinates corresponding to an isometric projection of said object from said X, Y, and Z output voltages; d. means for varying the angular perspective of said isometric projection; e. means for displaying said isometric projection; and f. means for magnetically recording and playing back the signals corresponding to the isometric projection of said object, so that in conjunction with said means for varying the angular perspective of said isometric projection, alternate angular perspectives can be readily displayed.
Claim 3
Dependent Claim
121 words
The apparatus of claim 1 wherein: a. said means for generating and detecting signals comprises an ultrasonic transmitter-receiver, transducer, and an X-Y scanner; b. said means for electronically generating an isometric projection and said means for varying the angular perspective of said projection comprises an electronic circuit adapted to receive said X, Y, and Z axis voltages, to transform same into X'', Y'' coordinates by the formulas: X'' X cosine theta + Y sine theta Y'' (Y cosine theta ) sine phi + Z cos phi where theta is rotation of the X, Y, axis and phi is the tilt of the Z axis, and further adapted to provide variation of angular perspective by varying the parameTers theta and phi .
Claim 4
Dependent Claim
206 words
The apparatus of claim 2 wherein said electronic circuit for generating an isometric projection and varying the angular perspective of said projection comprises: a. a sine-cosine potentiometer for analogically generating the functions negative sine theta and negative cosine theta ; b. a second sine-cosine potentiometer for analogically generating the functions cosine phi and negative sine phi ; c. an operational amplifier for inverting said negative sine theta function to produce the function sine theta ; d. a plurality of multiplier means electrically connected to said sine-cosine potentiometers, said operational amplifier, and said X, Y, and Z voltages to generate the functions negative Y sine theta , negative X cosine theta , sine theta , negative Y cosine theta , and negative Z cosine phi ; e. a summing operational amplifier electrically connected to said functions negative Y sine theta and negative X cosine theta to generate the function X'' X cosine theta + Y sine theta ; and f. further operational amplifier and multiplier means electrically connected to said functions X sine theta , negative Y cosine theta , negative sine phi and negative Z cosine phi to generate the function Y'' (Y cosine theta -X sine theta ) sine phi + Z cos phi .
References Cited (Backward Citations)
US3044058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |