US5376979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projector mountable light valve display
Assignee: Kopin Corp
•
Filing: 1993-08-13
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Granted: 1994-12-27
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Expires: 2013-08-13
Abstract
Abstract A housing is mountable on a carousel slide projector. The housing contains a movable light valve slide assembly that is coupled to a video signal source. The light valve slide assembly is movable between a position within the housing and a position outside the housing. When mounted on the slide projector, the light valve slide assembly can be moved into the projection chamber of the slide projector. The video signal source transmits a video signal to the light valve slide assembly, where the video signal is converted to a drive signal to actuate pixels on the light valve. The light valve thus generates a video image that is projected onto a viewing surface. Preferably the light valve is an active matrix liquid crystal display.
Inventors
- 👤 Matthew Zavracky
- 👤 Stephen Offsey
- 👤 David Chastain
- 👤 Michel Arney
- 👤 Benjamin Beck
- 👤 Gregory Hunter
- 👤 Kevin O'Connor
- 👤 Alan Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:32
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; A; A61; A61B; A61B3/00; A61B3/10; A61B3/113; G; G02; G02B; G02B27/00; G02B27/0093; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/30; G09G3/34; G09G3/36; H04; H04N; H04N5/00; H04N5/74; H04N5/7416; H04N5/7441; H04N9/00; H04N9/12; H04N9/31; H04N9/3141; H10; H10D; H10D30/00; H10D30/60; H10D30/67; H10D30/6758; G02B27/01; G02B2027/0192; G02B2027/0198; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/13454; G02F1/136; G02F1/13613; G02F1/1362; G02F1/136209; G09G2300/00; G09G2300/02; G09G2300/023; G09G2300/08; G09G2300/0809; G09G2300/0842; G09G2310/00; G09G2310/02; G09G2310/0243; G09G2310/0259; G09G2320/00; G09G2320/02; G09G2320/0233; G09G2320/04; G09G2320/041; G09G2320/043; G09G2340/00; G09G2340/04; G09G2340/0464; G09G2370/00; G09G2370/04; G09G2370/042; G09G3/2007; G09G3/2014; G09G3/3607; G09G3/3611; G09G3/3614; G09G3/3648; H04N5/66; H04N5/70; H04N5/7475; H04N5/7491; H10D30/6704; H10D30/6708; H10D30/6713; H10P; H10P72/00; H10P72/70; H10P72/74; H10P72/743
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
57 words
A housing for a slide projector mounted light valve display comprising: a housing having a securing mechanism to secure the housing to the slide projector; and a light valve slide assembly movable between a first position within the housing and a second position outside the housing in response to a slide ejection cycle of the slide projector.
Claim 2
Dependent Claim
57 words
A housing for a slide projector mounted light valve display comprising: a housing having a securing mechanism to secure the housing to the slide projector; and a light valve slide assembly movable between a first position within the housing and a second position outside the housing in response to a slide ejection cycle of the slide projector.
Claim 3
Dependent Claim
17 words
The housing of claim 1 wherein the securing mechanism registers to a spindle of the slide projector.
Claim 4
Dependent Claim
18 words
The housing of claim 1 wherein the securing mechanism registers to a frame tab of the slide projector.
Claim 5
Dependent Claim
18 words
The housing of claim 1 wherein the light valve slide assembly includes an active matrix liquid crystal display.
Claim 6
Dependent Claim
30 words
The housing of claim 1 further comprising a movement switching mechanism registered to the light valve slide assembly and actuated by movement of an ejector arm of the slide projector.
Claim 7
Dependent Claim
16 words
The housing of claim 5 wherein the movement switching mechanism is actuable by a manual control.
Claim 8
Dependent Claim
22 words
The housing of claim 1 further comprising a video interface coupled between the active matrix slide assembly and a remote video source.
Claim 9
Dependent Claim
16 words
The housing of claim 7 wherein the video source is a computer, which generates video images.
Claim 10
Dependent Claim
14 words
The housing of claim 7 wherein the video source generates a composite video signal.
Claim 11
Dependent Claim
24 words
The housing of claim 7 further comprising a remote control receiver, the video source being responsive to remote control signals received by the receiver.
Claim 12
Dependent Claim
14 words
The housing of claim 10 wherein the remote control receiver comprises an infrared detector.
Claim 13
Dependent Claim
80 words
A housing for a slide projector mounted light valve display comprising: a housing adapted to be positioned on a slide projector assembly; a light valve slide assembly movable through an aperture in the housing between a first position within the housing and a second position outside the housing; and a switching mechanism for controlling movement of the light valve slide assembly between the first position and the second position in response to a slide ejection cycle of the slide projector.
Claim 14
Dependent Claim
80 words
A housing for a slide projector mounted light valve display comprising: a housing adapted to be positioned on a slide projector assembly; a light valve slide assembly movable through an aperture in the housing between a first position within the housing and a second position outside the housing; and a switching mechanism for controlling movement of the light valve slide assembly between the first position and the second position in response to a slide ejection cycle of the slide projector.
Claim 15
Dependent Claim
18 words
The housing of claim 12 wherein the light valve slide assembly includes an active matrix liquid crystal display.
Claim 16
Dependent Claim
20 words
The housing of claim 12 wherein the switching mechanism is automatically actuated in response to operation of the slide projector.
Claim 17
Independent Claim
56 words
A method of operating a slide projector mounted light valve display comprising the steps of: securing a light valve housing to a slide projector; and moving a light valve slide assembly between a first position within the housing and a second position outside the housing in response to a slide ejection cycle of the slide projector.
Claim 18
Independent Claim
56 words
A method of operating a slide projector mounted light valve display comprising the steps of: securing a light valve housing to a slide projector; and moving a light valve slide assembly between a first position within the housing and a second position outside the housing in response to a slide ejection cycle of the slide projector.
Claim 19
Dependent Claim
20 words
The method of claim 15 wherein the securing step comprises registering the housing on a spindle of the slide projector.
Claim 20
Dependent Claim
36 words
The method of claim 15 wherein the moving step comprises operating the slide projector to move the light valve slide assembly from the first position to a position in a projection chamber of the slide projector.
Claim 21
Dependent Claim
35 words
The method of claim 15 the moving step comprises operating the slide projector to move the light valve slide assembly from a position in a projection chamber of the slide projector to the first position.
Claim 22
Independent Claim
71 words
A method of operating a slide projector mounted light valve display comprising the steps of: securing a light valve housing to a slide projector; securing a light valve slide assembly to a latch mechanism when in a first position within the housing; and moving the light valve slide assembly between the first position and a second position outside the housing in response to a slide ejection cycle of the slide projector.
Claim 23
Independent Claim
71 words
A method of operating a slide projector mounted light valve display comprising the steps of: securing a light valve housing to a slide projector; securing a light valve slide assembly to a latch mechanism when in a first position within the housing; and moving the light valve slide assembly between the first position and a second position outside the housing in response to a slide ejection cycle of the slide projector.
Claim 24
Dependent Claim
31 words
The method of claim 19 further comprising the step of alternately releasing and securing the light valve slide assembly to the latch mechanism in automatic response to successive slide ejection cycles.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-26 | 1998-06-27 | 1998-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-26 | 2002-06-27 | 2002-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-26 | 2006-06-27 | 2006-12-27 | $7700.00 | Window Closed / Lapsed |