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US4170771A Expired / Lapsed US ⏱️ 0.0 years remaining

Orthogonal active-passive array pair matrix display

Assignee: United States Department of the Army
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Filing: 1978-03-28
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Granted: 1979-10-09
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Expires: 1998-03-28
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Abstract

Abstract An orthogonal active-passive array pair matrix display comprised of two oogonal one-dimensional array displays. The output from an active display, which is formed of parallel individually controlled light emitting lines, is seen through a passive display, which is formed of parallel individually controlled light controlling lines. The passive light controlling lines are orthogonal to the active light emitting lines.

Inventors

  • 👤 Vincent T. Bly

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 22:12
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/3406; G09G3/342; H; H05; H05B; H05B33/00; H05B33/12; G09G2300/00; G09G2300/02; G09G2300/023; G09G2310/00; G09G2310/02; G09G2310/024

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 363 words
An orthogonal active-passive array pair display comprising: a transparent dielectric optical coupling means; a one-dimensional active display having parallel light emitting lines on an input side of said transparent dielectric optical coupling means with the output emissions of each of said parallel light emitting lines being separately controllable by enabling voltages applied thereto; a one-dimensional passive display having parallel light controlling lines on an output side of said transparent dielectric optical coupling means that are orthogonal to said parallel light emitting lines with the transmission of each of said parallel light controlling lines being separately controllable by enabling voltages applied thereto in which the output emissions of said active display are seen by said passive display through said transparent dielectric optical coupling means; and a control electronic means for accepting video-type input signals and for modifying said video-type input signals therein for separately controlling the enabling voltages applied to said active display and to said passive display by providing a preferred scan mode of the enabling voltages applied to individual lines of said parallel light emitting lines and said parallel light controlling lines in which each video line is applied to one individual line of said parallel light emitting lines of said active display and to all of said parallel light controlling lines of said passive display through first and second serial-to-parallel converter arrays that simultaneously control all of said passive display lines by performing serial-to-parallel conversions on selected individual line scan video signals into a plurality of parallel converter elements that are serial-to-parallel stored in one of said first or second serial-to-parallel arrays while the other of said first or second serial-to-parallel converter arrays simultaneously parallel dump other selected individual line scan video signals upon which serial-to-parallel conversions had been performed on a previous video scan line wherein parallel dumping is into the gates of a plurality of parallel transistors of a compatible transistor array that gate enabling voltages to said passive display parallel light controlling lines and alternately repeating the serial-to-parallel conversions and parallel dumping between said first and second serial-to-parallel converter arrays of selected individual line scan video signals in order to display information contained in said video-type input signals.
Claim 2
Dependent Claim 363 words
An orthogonal active-passive array pair display comprising: a transparent dielectric optical coupling means; a one-dimensional active display having parallel light emitting lines on an input side of said transparent dielectric optical coupling means with the output emissions of each of said parallel light emitting lines being separately controllable by enabling voltages applied thereto; a one-dimensional passive display having parallel light controlling lines on an output side of said transparent dielectric optical coupling means that are orthogonal to said parallel light emitting lines with the transmission of each of said parallel light controlling lines being separately controllable by enabling voltages applied thereto in which the output emissions of said active display are seen by said passive display through said transparent dielectric optical coupling means; and a control electronic means for accepting video-type input signals and for modifying said video-type input signals therein for separately controlling the enabling voltages applied to said active display and to said passive display by providing a preferred scan mode of the enabling voltages applied to individual lines of said parallel light emitting lines and said parallel light controlling lines in which each video line is applied to one individual line of said parallel light emitting lines of said active display and to all of said parallel light controlling lines of said passive display through first and second serial-to-parallel converter arrays that simultaneously control all of said passive display lines by performing serial-to-parallel conversions on selected individual line scan video signals into a plurality of parallel converter elements that are serial-to-parallel stored in one of said first or second serial-to-parallel arrays while the other of said first or second serial-to-parallel converter arrays simultaneously parallel dump other selected individual line scan video signals upon which serial-to-parallel conversions had been performed on a previous video scan line wherein parallel dumping is into the gates of a plurality of parallel transistors of a compatible transistor array that gate enabling voltages to said passive display parallel light controlling lines and alternately repeating the serial-to-parallel conversions and parallel dumping between said first and second serial-to-parallel converter arrays of selected individual line scan video signals in order to display information contained in said video-type input signals.
Claim 3
Dependent Claim 18 words
A display as set forth in claim 1 wherein said optical coupling means is a fiber optic faceplate.
Claim 4
Dependent Claim 19 words
A display as set forth in claim 1 wherein said optical coupling means is a flat clear dielectric layer.
Claim 5
Dependent Claim 25 words
A display as set forth in claim 1 wherein said optical coupling means is relay lens that images the active display onto the passive display.
Claim 6
Dependent Claim 21 words
A display as set forth in claim 1 wherein said active display parallel light emitting lines are made of electroluminescent material.
Claim 7
Dependent Claim 27 words
A display as set forth in claim 1 wherein said active display parallel light emitting lines are an array of light emitting diodes with one-dimensional end-fed lightguides.
Claim 8
Dependent Claim 22 words
A display as set forth in claim 1 wherein said passive display parallel light controlling lines are electro-optic variable transmission optical filters.
Claim 9
Dependent Claim 19 words
A display as set forth in claim 1 wherein said passive display parallel light controlling lines are liquid crystals.
Claim 10
Dependent Claim 17 words
A display as set forth in claim 1 wherein said preferred scan mode is by random access.
Claim 11
Dependent Claim 16 words
A display as set forth in claim 1 wherein said preferred scan mode is by line-at-a-time.

References Cited (Backward Citations)

US3718382A Cited
US3882490A Cited
US3811751A Cited
US3869195A Cited
US3950078A Cited
US4054368A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-10-08 1983-04-09 1983-10-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-10-08 1987-04-09 1987-10-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-10-08 1991-04-09 1991-10-09 $7700.00 Window Closed / Lapsed

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