US4297009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image storage and display
Assignee: Technicare Corp
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Filing: 1980-01-11
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Granted: 1981-10-27
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Expires: 2000-01-11
Abstract
Abstract Images and respectively associated timing marks are arrayed, as phototransparencies, about a disk. The disk is rotated and the timing marks are sensed. Display occurs either in two-dimensional fashion, such as in a television system, or in three-dimensional fashion such as in a semitransparent full image projection. Associated logic circuitry determines whether the full 3-D transparency is to be produced, in which case all images on the disk are to be illuminated, or whether swim through will occur, either on an image at a time or on a "ham slice" projection basis.
Inventors
- 👤 Reuben S. Mezrich
- 👤 Alec Colleoni
- 👤 David J. Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:45
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/08; G03B23/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
220 words
In a system employing a rotatable, disk-type phototransparency record of a plurality of sequentially associated images, said disk having said plurality of images sequentially, circumferentially disposed about a center of rotation, each image having a respectively associated reference timing indicium on said disk, a system for displaying said images comprising: (a) a projection system for selectively, intermittently illuminating a zone of said disk through which said images pass upon disk rotation; (b) means for displaying images on said disk which are so illuminated; (c) means for sensing the rate of disk rotation and the position of specific ones of said images thereon by detecting movement of said indicia past a given point; (d) means, responsive to said means for sensing, for generating a first pulse signal representative of frequency of said detected movement, and a second pulse signal representative of full disk rotations; (e) first counter means, incremented by said first pulse signal and reset by said second pulse signal, for developing a first count; (f) second counter means incremented by select pulses of said second pulse signal, for developing a second count; and (g) comparator means, responsive to said first and second counter means, for energizing said projection system to illuminate a given number of next occurring images in said zone, after said first count equals said second count.
Claim 2
Dependent Claim
220 words
In a system employing a rotatable, disk-type phototransparency record of a plurality of sequentially associated images, said disk having said plurality of images sequentially, circumferentially disposed about a center of rotation, each image having a respectively associated reference timing indicium on said disk, a system for displaying said images comprising: (a) a projection system for selectively, intermittently illuminating a zone of said disk through which said images pass upon disk rotation; (b) means for displaying images on said disk which are so illuminated; (c) means for sensing the rate of disk rotation and the position of specific ones of said images thereon by detecting movement of said indicia past a given point; (d) means, responsive to said means for sensing, for generating a first pulse signal representative of frequency of said detected movement, and a second pulse signal representative of full disk rotations; (e) first counter means, incremented by said first pulse signal and reset by said second pulse signal, for developing a first count; (f) second counter means incremented by select pulses of said second pulse signal, for developing a second count; and (g) comparator means, responsive to said first and second counter means, for energizing said projection system to illuminate a given number of next occurring images in said zone, after said first count equals said second count.
Claim 3
Dependent Claim
24 words
A system as disclosed in claim 1 and further including manually operable switch means for temporarily disabling further incrementing of said second counter means.
Claim 4
Dependent Claim
37 words
A system as disclosed in claim 1 wherein said second counter means is an automatically recirculating up/down counter, counting back and forth through a predetermined range of said second count under control of said second pulse signal.
Claim 5
Dependent Claim
23 words
A system as described in claim 3 wherein said predetermined range is equal to the total number of images stored on said disk.
Claim 6
Dependent Claim
72 words
A system as described in claim 1 wherein said second counter means comprises: (a) a third counter, repeatably counting down from a specified initial count to zero, in response to said second pulse signal; (b) manually operated means for establishing said specified initial count; and (c) fourth counter means, incremented upon each occurrence of a given reference count of said third counter, the count in said fourth counter being said second count.
Claim 7
Dependent Claim
37 words
A system as described in claim 5, wherein said fourth counter means is an automatically recirculating up/down counter, counting back and forth through a predetermined range of said second count under control of said second pulse signal.
Claim 8
Dependent Claim
23 words
A system as described in claim 6, wherein said predetermined range is equal to the total number of images stored on said disk.
Claim 9
Dependent Claim
78 words
A system as described in claim 1 wherein said comparator means comprises: (a) fifth counter means, for repeatably counting from a given reference count to zero in response to said first pulse signal; (b) comparator means for generating an enabling signal each time said first count is equal to said second count; and (c) means, enabled by said enabling signal, for energizing said projection system once for each count of the next cycle of said fifth counter means.
Claim 10
Dependent Claim
23 words
A system as described in claim 8 wherein said reference count is equal to the total number of images stored on said disk.
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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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |