US4472737A
Expired / Lapsed
US
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Stereographic tomogram observing apparatus
Assignee: Toshiba Corp
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Filing: 1982-08-31
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Granted: 1984-09-18
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Expires: 2002-08-31
Abstract
Abstract A stereographic tomogram observing apparatus comprises a memory for storing tomographic picture data of a specific part of internal tissue of the object, a reading device for reading out the tomographic picture data, a projecting type CRT for projecting light beams at intensities corresponding to tomographic picture data read out by the reading device, a picture reproducing device made up of a plurality of tomographic picture reproducing screens arranged in parallel and for reproducing corresponding tomographic pictures, and a switching circuit for making the tomographic picture data read out correspond to the screen for reproducing the tomographic picture data.
Inventors
- 👤 Kenji Iwasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
H; H04; H04N; H04N13/00; H04N13/30; H04N13/388; H04N13/395; G; G02; G02B; G02B30/00; G02B30/50; G02B30/52
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
126 words
A stereographic tomogram observing apparatus comprising: memory means for storing tomographic picture data of cross sections of said object arranged in parallel at given intervals; means for reading out said tomographic picture data in a given sequence and at given time intervals; projecting means for converting tomographic picture data read out by said reading means into a light signal at an intensity according to said tomographic picture image; picture reproducing means made up of a plurality of tomographic picture reproducing units arranged in parallel for reproducing tomographic pictures according to the light signals projected from said projecting means; and selecting means for selecting said individual tomographic picture reproducing units in said picture reproducing means according to said tomographic picture data read out by said reading means.
Claim 2
Dependent Claim
126 words
A stereographic tomogram observing apparatus comprising: memory means for storing tomographic picture data of cross sections of said object arranged in parallel at given intervals; means for reading out said tomographic picture data in a given sequence and at given time intervals; projecting means for converting tomographic picture data read out by said reading means into a light signal at an intensity according to said tomographic picture image; picture reproducing means made up of a plurality of tomographic picture reproducing units arranged in parallel for reproducing tomographic pictures according to the light signals projected from said projecting means; and selecting means for selecting said individual tomographic picture reproducing units in said picture reproducing means according to said tomographic picture data read out by said reading means.
Claim 3
Dependent Claim
51 words
A stereographic tomogram observing apparatus according to claim 1, wherein said tomographic picture reproducing units include a couple of transparent plate members disposed in parallel, transparent electrodes formed on the surfaces of said transparent plate members which face each other, and light scattering means filling a space between said transparent electrodes.
Claim 4
Dependent Claim
74 words
A stereographic tomogram observing apparatus according to claim 1, wherein said picture reproducing means includes a plurality of transparent members arranged in parallel, transparent electrodes provided only on the inner surface of said transparent plate members on both the outermost sides of the plurality of said transparent plate members and attached to both sides of said remaining transparent plate members, and light scattering means filling a space between said adjacent and opposite transparent electrodes.
Claim 5
Dependent Claim
48 words
A stereographic tomogram observing apparatus according to claim 1, wherein said picture reproducing means includes a plurality of rotating transparent discs mounted in parallel to and along a rotating shaft, and picture reproducing units provided on said rotating discs and displaced at given angles about said rotating shaft.
Claim 6
Dependent Claim
49 words
A stereographic tomogram observing apparatus according to claim 1, wherein a plurality of said projecting means are provided, focal distances of said projecting means are made different by means of lenses, and said focal distances are made to correspond to different picture reproducing units of said picture reproducing means.
Claim 7
Dependent Claim
63 words
A stereographic tomogram observing apparatus according to claim 1, wherein said projecting means includes at least one laser generating means, modulating means for modulating the laser beam from said laser generating means by the tomographic picture data read out by said reading means, and deflecting means for scanning the output laser beam from said modulating means to project it said picture reproducing means.
Claim 8
Dependent Claim
20 words
A stereographic tomogram observing apparatus according to claim 2 or 3, wherein said light scattering means is Nematic liquid crystal.
Claim 9
Dependent Claim
18 words
A stereographic tomogram observing apparatus according to claim 3, wherein said light scattering means is Cholesteric liquid crystal.
Claim 10
Dependent Claim
20 words
A stereographic tomogram observing apparatus according to claim 2 or 3, wherein said light scattering means is Smetic liquid crystal.
Claim 11
Dependent Claim
18 words
A stereographic tomogram observing apparatus according to claim 2 or 3, wherein said light scattering means in PLZT.
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) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |