Patent US3879117A successfully refreshed from Google Patents.
US3879117A
Expired / Lapsed
US
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Apparatus for the visual display of inscriptions on transparencies
Assignee: Individual
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Filing: 1973-10-02
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Granted: 1975-04-22
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Expires: 1993-10-02
Abstract
Abstract Device for projecting transparencies which bear sections of magnetic tapes having recorded thereon binary digital words representative of alphanumerical characters. During projection, the binary words are converted into visual characters by a ''''digital-image'''' converter. The device can sort transparencies by comparing the digital words recorded thereon to given sorting words. The rate of the electronic part of the device is synchronized with the velocity of the movement of the transparencies when they travel from their feed position to their projection position.
Inventors
- 👤 Jean J Damlamian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:50
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06; G06; G06K; G06K17/00; G06K17/0016
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A device for projecting a transparency carrying a magnetic tape section having magnetically recorded thereon binary digital words representative of alphanumerical characters, said device comprising: means for imparting to the transparency a constant velocity movement from a feed position to a projection position; means for writing or reading said binary digital words during said movement and for visualizing the corresponding alphanumerical characters including a magnetic head means cooperating with said magnetic tape section during said movement; a writing-in register; a reading-out register; each of said writing-in register and reading-out register connected to said magnetic head means; a binary-word to alphanumerical character converter connected to said reading-out register, a visual display panel connected to said converter; and, a pulse-clock generator synchronized with said movement imparting means and controlling said registers and said converter.
Claim 2
Independent Claim
132 words
A device for projecting a transparency carrying a magnetic tape section having magnetically recorded thereon binary digital words representative of alphanumerical characters, said device comprising: means for imparting to the transparency a constant velocity movement from a feed position to a projection position; means for writing or reading said binary digital words during said movement and for visualizing the corresponding alphanumerical characters including a magnetic head means cooperating with said magnetic tape section during said movement; a writing-in register; a reading-out register; each of said writing-in register and reading-out register connected to said magnetic head means; a binary-word to alphanumerical character converter connected to said reading-out register, a visual display panel connected to said converter; and, a pulse-clock generator synchronized with said movement imparting means and controlling said registers and said converter.
Claim 3
Independent Claim
132 words
A device for projecting a transparency carrying a magnetic tape section having magnetically recorded thereon binary digital words representative of alphanumerical characters, said device comprising: means for imparting to the transparency a constant velocity movement from a feed position to a projection position; means for writing or reading said binary digital words during said movement and for visualizing the corresponding alphanumerical characters including a magnetic head means co-operating with said magnetic tape section during said movement; a writing-in register; a reading-out register; each of said writing-in register and reading-out register connected to said magnetic head means; a binary-word to alphanumerical character converter connected to said reading-out register, a visual display panel connected to said converter; and, a pulse-clock generator synchronized with said movement imparting means and controlling said registers and said converter.
Claim 4
Independent Claim
132 words
A device for projecting a transparency carrying a magnetic tape section having magnetically recorded thereon binary digital words representative of alphanumerical characters, said device comprising: means for imparting to the transparency a constant velocity movement from a feed position to a projection position; means for writing or reading said binary digital words during said movement and for visualizing the corresponding alphanumerical characters including a magnetic head means co-operating with said magnetic tape section during said movement; a writing-in register; a reading-out register; each of said writing-in register and reading-out register connected to said magnetic head means; a binary-word to alphanumerical character converter connected to said reading-out register, a visual display panel connected to said converter; and, a pulse-clock generator synchronized with said movement imparting means and controlling said registers and said converter.
Claim 5
Dependent Claim
27 words
A device according to claim 1 wherein said character converter is a digital-image converter converting the binary-word signals of the reading-out register into visual matrix character signals.
Claim 6
Dependent Claim
16 words
A device according to claim 1 wherein said visual display panel is a crystal display panel.
Claim 7
Dependent Claim
105 words
A device according to claim 1 including a sorting means for sorting a transparency according to the binary digital words recorded thereon after the transparency undergoes a constant velocity movement from the feed position to a sorting position and further including means for entering in the writing-in register given sorting digital words and comparator means for comparing said given sorting words to the digital words recorded on the transparency and for selecting the movement from the feed position to the projecting position when the compared words are different and the movement from the feed position to the sorting position when the compared words are identical.
Claim 8
Dependent Claim
79 words
A device according to claim 1 wherein said magnetic-tape section of the transparency comprises two tracks, and said magnetic head means comprises a first magnetic head co-operating with one of said tracks for writing or reading binary digital words coded in a first non-return to zero inverted code and a second magnetic head co-operating with the other track for writing or reading binary digital words coded in a second non-return to zero inverted code complementary of the first code.
References Cited (Backward Citations)
US3704451A
Cited
US3824008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |