US3658402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hologram graphic data tablet
Assignee: NEC Corp
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Filing: 1970-06-30
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Granted: 1972-04-25
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Expires: 1990-06-30
Abstract
Abstract A holographic tablet device comprises a recording plate on which an array of holograms is arranged. Each hologram has coded positional information therein corresponding to its location on the plate. The recording plate is illuminated with a collimated monochromatic or substantially monochromatic beam by an indicating device. Diffracted beams are thereby produced corresponding to which of the holograms have been illuminated. The diffracted beams are detected and corresponding binary signals are produced. Also disclosed is an arrangement for maintaining a desired constant angle between the illuminating device and the recording plate.
Inventors
- 👤 Nobuo Nishida
- 👤 Mitsuhito Sakaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:36
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/042; G03; G03H; G03H1/00; G03H1/22; G03H1/2286; G03H1/26; G03H1/30; G06F3/0304; G06F3/0317; G06F3/0321; G06V; G06V10/00; G06V10/88; G06V10/89; G06V10/893; G06V10/895; G03H2223/00; G03H2223/16
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
146 words
A tablet device comprising at least one sheet of recording plates having an array of holograms thereon, each of said holograms having coded positional information corresponding to the position of the hologram recorded therein, drawing means movable along a locus of an arbitrary pattern on said sheet and which includes means for indicating selected ones of said holograms corresponding to the arbitrary movement of said drawing means and means for illuminating a collimated, substantially monochromic beam onto said holograms, means arranged in a predetermined direction with respect to said recording plate for detecting diffracted beams in accordance with said coded information from the illuminated ones of said holograms during the movement of said drawing means, and means coupled to said detecting means for identifying coded signals corresponding to said coded information, whereby an information signal relating to said pattern described by said drawing means is obtained.
Claim 2
Dependent Claim
146 words
A tablet device comprising at least one sheet of recording plates having an array of holograms thereon, each of said holograms having coded positional information corresponding to the position of the hologram recorded therein, drawing means movable along a locus of an arbitrary pattern on said sheet and which includes means for indicating selected ones of said holograms corresponding to the arbitrary movement of said drawing means and means for illuminating a collimated, substantially monochromic beam onto said holograms, means arranged in a predetermined direction with respect to said recording plate for detecting diffracted beams in accordance with said coded information from the illuminated ones of said holograms during the movement of said drawing means, and means coupled to said detecting means for identifying coded signals corresponding to said coded information, whereby an information signal relating to said pattern described by said drawing means is obtained.
Claim 3
Dependent Claim
26 words
The tablet device of claim 1, in which said recording plate consists of a number of small holograms in which two-dimensional coded information is respectively recorded.
Claim 4
Dependent Claim
68 words
The tablet device of claim 1, in which there are two of said recording plates arranged in close contact with one another, each of said plates including a plurality of slit-like holograms, each of said holograms recording one-dimensional coded information corresponding to the position of said slit-like hologram, the holograms in one of said plates being arranged substantially perpendicular to the holograms in the other of said plates.
Claim 5
Dependent Claim
26 words
The tablet device of claim 3, further comprising a coherent light source, and light guide means extending from said coherent light source to said illuminating means.
Claim 6
Dependent Claim
17 words
The tablet device of claim 4, in which said light guide means is a flexible optical fiber.
Claim 7
Dependent Claim
26 words
The tablet device of claim 1, further comprising a coherent light source, and light guide mEans extending from said coherent light source to said illuminating means.
Claim 8
Dependent Claim
17 words
The tablet device of claim 6, in which said light guide means is a flexible optical fiber.
Claim 9
Dependent Claim
24 words
The tablet device of claim 1, further comprising a photochromic plate positioned adjacent said recording plate for displaying the locus of said drawing means.
Claim 10
Dependent Claim
49 words
The tablet device of claim 8, further comprising an infrared light source for bleaching said photochromic plate, a source of monochromatic light, an ultraviolet light source, and first and second light guide means respectively extending between said monochromatic light source and said ultraviolet light source and said indicating means.
Claim 11
Dependent Claim
25 words
The tablet device of claim 1, further comprising means for maintaining said beam at a predetermined angle of incidence with respect to said recording plate.
Claim 12
Dependent Claim
25 words
The tablet device of claim 10, in which said beam angle maintaining means comprises cooperating magnetic means on said indicating means and said illuminating means.
Claim 13
Dependent Claim
58 words
The tablet device of claim 10, in which said beam angle maintaining means comprises first and second guide means held at a constant angle with respect to each other, said illuminating means being slidably mounted on one of said guide means, and said one of said guide means being slidably mounted on the other of said guide means.
Claim 14
Dependent Claim
20 words
The tablet device of claim 12, further comprising cooperating magnetic means carried by said indicating means and said illuminating means.
Claim 15
Dependent Claim
45 words
The tablet device of claim 10, in which said beam angle maintaining means comprises drawing means for tracing a predetermined locus, and means mechanically linking said drawing means and said illuminating means so that the locus of the latter corresponds to that of the former.
Claim 16
Dependent Claim
14 words
The tablet device of claim 14, in which said linking means comprises a pantograph.
Claim 17
Dependent Claim
22 words
The tablet device of claim 1, further comprising a light source for providing said substantially monochromatic beam mounted in said drawing means.
Claim 18
Dependent Claim
20 words
The tablet device of claim 16, further comprising lens means also mounted in said drawing means for collimating said beam.
Claim 19
Dependent Claim
46 words
A recording plate for use in providing positional information in binary form, said plate comprising an array of holograms formed thereon, each of said holograms containing coded positional information in at least one dimension corresponding to the respective position of the individual hologram in said array.
Claim 20
Dependent Claim
46 words
A recording plate for use in providing positional information in binary form, said plate comprising an array of holograms formed thereon, each of said holograms containing coded positional information in at least one dimension corresponding to the respective position of the individual hologram in said array.
References Cited (Backward Citations)
US197885A
Cited
US3542448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |