US4400725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Picture display-image pickup apparatus
Assignee: Individual
•
Filing: 1982-02-08
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Granted: 1983-08-23
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Expires: 2002-02-08
Abstract
Abstract A picture display-image pickup apparatus for visual communication includes a picture display device and an image pickup device. The display device and pickup device are arranged on a substantially common optical axis directing to a talker.
Inventors
- 👤 Suzuyo Tanigaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:27
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/14; H04N7/141; H04N7/142; H04N7/144
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
A picture display-image pickup apparatus for visual communication comprising a display element made of a transillumination controllable material, the transparency and opaqueness of which may be controlled in accordance with an applied electric field, used in a picture display device which is arranged to face a talker, said picture display device further comprising an image pickup device, said image pickup device being arranged inside of and on the common optical axis of said display device.
Claim 2
Dependent Claim
75 words
A picture display-image pickup apparatus for visual communication comprising a display element made of a transillumination controllable material, the transparency and opaqueness of which may be controlled in accordance with an applied electric field, used in a picture display device which is arranged to face a talker, said picture display device further comprising an image pickup device, said image pickup device being arranged inside of and on the common optical axis of said display device.
Claim 3
Dependent Claim
22 words
An apparatus according to claim 1, wherein a condensing lens is interposed between said picture display device and said image pickup device.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1 wherein said image pickup device is a vidicon.
Claim 5
Dependent Claim
12 words
The apparatus of claim 1 wherein said material is a liquid crystal.
Claim 6
Dependent Claim
10 words
The apparatus of claim 1 wherein said material is PLZT.
Claim 7
Dependent Claim
10 words
The apparatus of claim 1 wherein said material is EC.
Claim 8
Dependent Claim
33 words
An apparatus according to claim 1, wherein the image pickup device is a solid state image sensing element of the class comprising an array of individual sensing elements arranged in an X-Y matrix.
Claim 9
Dependent Claim
24 words
An apparatus according to claim 7, wherein a condensing lens is interposed between said picture display device and said solid state image sensing element.
Claim 10
Dependent Claim
30 words
An apparatus according to claim 7, wherein said picture display device and said solid state image sensing device are made to contact each other thereby to form a unitary structure.
Claim 11
Dependent Claim
10 words
The apparatus of claim 7 wherein said elements are CCDs.
Claim 12
Dependent Claim
10 words
The apparatus of claim 7 wherein said elements are BBDs.
Claim 13
Dependent Claim
10 words
The apparatus of claim 7 wherein said elements are photodiodes.
Claim 14
Dependent Claim
15 words
The apparatus of claim 7 wherein said image pickup device is an image orthicon tube.
Claim 15
Dependent Claim
42 words
An apparatus according to claim 1 or 7, wherein said picture display device includes two transparent plates, a liquid crystal sandwitched in between and a plurality of transparent electrodes formed horizontally and vertically on the inner sides of said transparent plates, respectively.
Claim 16
Dependent Claim
70 words
An apparatus according to claim 1 or 7, wherein said apparatus includes control means for controlling said picture display device and image pickup device such that said display device turns transparent after said transillumination controllable material is controlled into opaque to display a picture and the talker's image passes through said transparent display device to reach said pickup device which is operated during the transparent condition of said display device.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |