← Back to Patent Explorer
US3701581A Expired / Lapsed US ⏱️ 0.0 years remaining

Stereoscopic enhancement of pictorial displays

Assignee: General Electric Co
•
Filing: 1971-11-15
•
Granted: 1972-10-31
•
Expires: 1991-11-15
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract METHODS AND APPARATUS ARE DESCRIBED FOR ENHANCING THE STEREOSCOPIC INFORMATION CONTENT OF A TWO-DIMENSIONAL DISPLAY SURFACE SO THAT STEREOSCOPIC INFORMATION IS PERCEIVED WITH THE REALISM OF THE ORIGINAL SCENE. THE APPARATUS INCLUDES A STEREOGRAPHIC FRAME SURROUNDING THE DISPLAY AND SPACED THEREFROM. THE FRAME, INCLUDING MEANS FOR DECREASING THE SCENE BRIGHTNESS AT A NON-LINEAR RATE, DISASSOCIATES THE DISPLAY FROM THE SURROUNDING ENVIRON- MENT BY DEFOCUSING THE EDGE OF THE FRAME SO THAT IT IS DIFFICULT FOR THE MIND OF THE VIEWER TO DETERMINE THE DISTANCE "D" BETWEEN THE FRAME AND THE DISPLAY SURFACE. SUITABLE SPACINGS D RANGE BETWEEN APPROXIMATELY W/40 AND W/5, WHERE W IS EQUAL TO THE WIDTH OF THE DISPLAY SURFACE.

Inventors

  • 👤 John L Henkes Jr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 09:52
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60; G02; G02B; G02B30/00; G02B30/40

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-10-31 1976-05-01 1976-10-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-31 1980-05-01 1980-10-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-31 1984-05-01 1984-10-31 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag