US3781875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical arrangement of the television generator
Assignee: Datavision Inc
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Filing: 1971-10-04
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Granted: 1973-12-25
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Expires: 1991-10-04
Abstract
Abstract A television character generator is provided with a housing and keyboard arrangement in which the video signal generating circuitry is located directly beneath the keyboard. The keyboard, which is a mercury switch operated encoding keyboard, and video signal generating circuitry are mounted on a folding frame which can be unfolded to provide ready access to the keyboard and circuitry.
Inventors
- 👤 W King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:33
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; H; H01; H01H; H01H29/00; H01H29/004
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
164 words
A television character generator for producing alphanumeric characters on the screen of at least one external television monitor comprising a casing, a first plate mounted in said casing, a keyboard mounted on said first plate in said casing having a plurality of keys including means to generate character signals representing different alphanumeric characters in response to the actuation of each of said keys, video character generating means mounted in said casing responsive to said character signals to generate a video signal which when applied to said television monitor will produce on a screen of said monitior the alphanumeric characters represented by said character signals, a second plate mounted in said casing beneath said first plate generally parallel to said first plate and adjacent to said first plate, said video character generating means beIng in the form of interconnected integrated circuits mounted on said second plate beneath said keyboard, all television monitors responsive to said video signal being external to and apart from said casing.
Claim 2
Dependent Claim
164 words
A television character generator for producing alphanumeric characters on the screen of at least one external television monitor comprising a casing, a first plate mounted in said casing, a keyboard mounted on said first plate in said casing having a plurality of keys including means to generate character signals representing different alphanumeric characters in response to the actuation of each of said keys, video character generating means mounted in said casing responsive to said character signals to generate a video signal which when applied to said television monitor will produce on a screen of said monitior the alphanumeric characters represented by said character signals, a second plate mounted in said casing beneath said first plate generally parallel to said first plate and adjacent to said first plate, said video character generating means beIng in the form of interconnected integrated circuits mounted on said second plate beneath said keyboard, all television monitors responsive to said video signal being external to and apart from said casing.
Claim 3
Dependent Claim
43 words
A television character generator as recited in claim 1, wherein said keyboard includes a plurality of mercury switches, one corresponding to and actuated by each of said keys, and means responsive to the actuation of said mercury switches to generate said character signals.
Claim 4
Dependent Claim
118 words
A keyboard responsive apparatus comprising a casing, a first plate mounted in said casing, a second plate mounted in said casing hinged to said first plate on one side and hinged to said casing on the side, a keyboard mounted on said first plate having a plurality of keys including means to generate character signals representing different alphanumeric characters in response to the actuation of said keys, circuitry means responsive to and acting upon said character signals mounted on said second plate, said second plate being beneath said first plate in said casing whereby said first and second plates can be folded out of said casing by pivoting upon the hinged connections between said plates and said casing.
Claim 5
Dependent Claim
118 words
A keyboard responsive apparatus comprising a casing, a first plate mounted in said casing, a second plate mounted in said casing hinged to said first plate on one side and hinged to said casing on the side, a keyboard mounted on said first plate having a plurality of keys including means to generate character signals representing different alphanumeric characters in response to the actuation of said keys, circuitry means responsive to and acting upon said character signals mounted on said second plate, said second plate being beneath said first plate in said casing whereby said first and second plates can be folded out of said casing by pivoting upon the hinged connections between said plates and said casing.
Claim 6
Dependent Claim
41 words
A keyboard responsive apparatus as recited in claim 3, wherein said hinged connections between said plates and said casing are constructed so that said plates can be balanced in a stable position extending generally vertically from said frame without external support.
Claim 7
Dependent Claim
104 words
A keyboard responsive apparatus as recited in claim 3, wherein said first plate is mounted upon and bridges between a first pair of parallel bars, said second plate is mounted upon and bridges between a second pair of parallel bars pivotally connected at one end of said first pair of bars and pivotally connected at the other end to a third pair of bars fixed to the bottom of said casing, said second plate resting upon said third pair of bars and said first pair of bars resting upon said second plate when said bars and said plates are folded up in said casing.
Claim 8
Dependent Claim
38 words
A keyboard responsive apparatus as recited in claim 5, wherein the top surface of said third parallel bars is canted at an angle relative to the bottom of said casing whereby said keyboard is canted at said angle.
Claim 9
Dependent Claim
180 words
A television character generator for producing alphanumeric characters on the screen of at least one external television monitor comprising a casing, a first plate mounted in said casing, a keyboard mounted on said first plate in said casing having a plurality of keys including means to generate character signals representing different alphanumeric characters in response to the actuation of each of said keys, a second plate hinged to said first plate on one side and hinged to said casing on the other side, video character generating means mounted on said second plate in said casing beneath said keyboard responsive to said character signals to generate a video signal which when applied to said television monitor will produce on the screen of said monitor the alphanumeric characters represented by said character signals, said second plate being beneath said first plate in said casing whereby said first and second plates can be folded out of said casing by pivoting on the hinge connection between said plates and said casing, all television monitors responsive to said video signals being external to said casing.
Claim 10
Dependent Claim
180 words
A television character generator for producing alphanumeric characters on the screen of at least one external television monitor comprising a casing, a first plate mounted in said casing, a keyboard mounted on said first plate in said casing having a plurality of keys including means to generate character signals representing different alphanumeric characters in response to the actuation of each of said keys, a second plate hinged to said first plate on one side and hinged to said casing on the other side, video character generating means mounted on said second plate in said casing beneath said keyboard responsive to said character signals to generate a video signal which when applied to said television monitor will produce on the screen of said monitor the alphanumeric characters represented by said character signals, said second plate being beneath said first plate in said casing whereby said first and second plates can be folded out of said casing by pivoting on the hinge connection between said plates and said casing, all television monitors responsive to said video signals being external to said casing.
Claim 11
Dependent Claim
42 words
A television character generator as recited in claim 7, wherein the hinged connections between said plates and said casing are constructed so that said plates can be balanced in a stable unfolded position extending generally vertically from said casing without external support.
Claim 12
Dependent Claim
107 words
A television character generator as recited in claim 7, wherein said first plate is mounted upon and bridges between a first pair of parallel bars, said second plate is mounted upon and bridges between a second pair of parallel bars pivotally connected at one end of said first pair of bars and pivotally connected at the other end to a third pair of pArallel bars fixed to the bottom of said casing; said second plate resting directly upon said third pair of bars and said first pair of bars resting directly upon said second plate when said bars and said plates are folded up in said casing.
Claim 13
Dependent Claim
41 words
A television character generator as recited in claim 9, wherein the top surface of said third parallel bars is canted at an angle with respect to the bottom of said casing, whereby said keyboard is canted at that said same angle.
References Cited (Backward Citations)
US3413610A
Cited
US3588838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |