US3585627A
Expired / Lapsed
US
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Character generator
Assignee: Raytheon Co
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Filing: 1967-09-01
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Granted: 1971-06-15
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Expires: 1987-09-01
Abstract
Abstract A high-speed character generator which employs single resistors for storing character stroke information and which employs alternating low-speed current mode commutators to alternately drive a two-phase, high-speed current mode commutator.
Inventors
- 👤 Daryl J Christopher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:56
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/06; G09G1/08; G09G1/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
103 words
A high-speed character generator comprising: character selection code input means for receiving character stroke selection information; character selection decoding means connected to said input means for selecting the desired character strokes; analog storage means for storing the resistance value corresponding to the character stroke selected by said decoding means; alternating first and second commutating means for alternately receiving character stroke generation currents derived from said storage means; third commutating means for alternately receiving and switching character stroke currents derived from said first and second commutating means; and synchronizing means including means for controlling the operation of said first, second and third commutating means.
Claim 2
Dependent Claim
103 words
A high-speed character generator comprising: character selection code input means for receiving character stroke selection information; character selection decoding means connected to said input means for selecting the desired character strokes; analog storage means for storing the resistance value corresponding to the character stroke selected by said decoding means; alternating first and second commutating means for alternately receiving character stroke generation currents derived from said storage means; third commutating means for alternately receiving and switching character stroke currents derived from said first and second commutating means; and synchronizing means including means for controlling the operation of said first, second and third commutating means.
Claim 3
Dependent Claim
25 words
A character generator as set forth in claim 1 wherein: said analog storage means includes a plurality of parallel-connected resistors for storing character stroke information.
Claim 4
Dependent Claim
135 words
A character generator comprising: a plurality of character selection code input lines for receiving characteR stroke selection information; character selection decoding means connected to said input lines for selecting the desired character strokes; analog storage means including a plurality of resistors each of which, when connected to a constant voltage by said decoding means, conducts a current, the value of which current is uniquely determined by the particular resistor to which said decoding means is connected; a plurality of commutators connected to said analog storage means for alternately receiving character stroke generation currents derived from said analog storage means; an additional commutator for alternately receiving and switching information derived from said plurality of commutators; and clocking and control logic circuitry for synchronizing and controlling the operation of said plurality of commutators with said additional commutator.
Claim 5
Dependent Claim
135 words
A character generator comprising: a plurality of character selection code input lines for receiving characteR stroke selection information; character selection decoding means connected to said input lines for selecting the desired character strokes; analog storage means including a plurality of resistors each of which, when connected to a constant voltage by said decoding means, conducts a current, the value of which current is uniquely determined by the particular resistor to which said decoding means is connected; a plurality of commutators connected to said analog storage means for alternately receiving character stroke generation currents derived from said analog storage means; an additional commutator for alternately receiving and switching information derived from said plurality of commutators; and clocking and control logic circuitry for synchronizing and controlling the operation of said plurality of commutators with said additional commutator.
Claim 6
Dependent Claim
25 words
A character generator as set forth in claim 3 including display means coupled to the output of said additional commutator for displaying the generated characters.
Claim 7
Dependent Claim
198 words
A character generator comprising: a plurality of character selection code input lines for receiving character stroke selection information; a character selection decoder connected to said input lines for selecting the desired character stroke selection information; phase A and B analog means each including a plurality of parallel-connected resistors for conversion of the character stroke selection information selected by said decoder into a plurality of character stroke generation currents; phase A and phase B commutators operable at a first speed each including a plurality of switches, each switch being connected to a corresponding resistor of said analog means, said commutators alternately receiving character stroke generation currents derived from said analog means; an additional commutator operable at a second speed connected to each of said phase A and phase B commutators for alternately receiving and switching character stroke generation currents derived from said phase A and phase B commutators, wherein said second speed is greater than said first speed; synchronizing means including means for controlling the operation of said commutators said synchronizing means and said controlling means including clocking and control logic circuitry respectively; and display means coupled to the output of said additional commutator for displaying the generated character.
Claim 8
Dependent Claim
198 words
A character generator comprising: a plurality of character selection code input lines for receiving character stroke selection information; a character selection decoder connected to said input lines for selecting the desired character stroke selection information; phase A and B analog means each including a plurality of parallel-connected resistors for conversion of the character stroke selection information selected by said decoder into a plurality of character stroke generation currents; phase A and phase B commutators operable at a first speed each including a plurality of switches, each switch being connected to a corresponding resistor of said analog means, said commutators alternately receiving character stroke generation currents derived from said analog means; an additional commutator operable at a second speed connected to each of said phase A and phase B commutators for alternately receiving and switching character stroke generation currents derived from said phase A and phase B commutators, wherein said second speed is greater than said first speed; synchronizing means including means for controlling the operation of said commutators said synchronizing means and said controlling means including clocking and control logic circuitry respectively; and display means coupled to the output of said additional commutator for displaying the generated character.
Claim 9
Dependent Claim
85 words
A character generator comprising: character selection code input means for receiving character stroke selection information; switchable analog conversion means for converting the character selection code to a plurality of stroke generation signals; alternating first and second commutation means for alternately receiving stroke generation signals derived from the switchable analog conversion means; third commutating means for alternately receiving and switching signals derived from said first and second commutating means; and synchronizing means including means for controlling the operation of said first, second and third commutating means.
Claim 10
Dependent Claim
85 words
A character generator comprising: character selection code input means for receiving character stroke selection information; switchable analog conversion means for converting the character selection code to a plurality of stroke generation signals; alternating first and second commutation means for alternately receiving stroke generation signals derived from the switchable analog conversion means; third commutating means for alternately receiving and switching signals derived from said first and second commutating means; and synchronizing means including means for controlling the operation of said first, second and third commutating means.
Claim 11
Dependent Claim
28 words
A character generator in accordance with claim 6, wherein said switchable analog conversion means includes a plurality of parallel-connected resistors for converting stroke selection information into analog currents.
Claim 12
Dependent Claim
97 words
An alphanumeric display comprising: input means for receiving visual informational pattern selection information; decoding means connected to said input means for selecting the desired information pattern; storage means for storing data selected by said decoding means; means for alternately receiving visual informational pattern data derived from said storage means, including at least first and second commutating means; means for alternately receiving and switching the output derived from said means for alternately receiving visual informational pattern data, including at least third commutating means; and synchroNizing means including means for controlling the operation of each of said commutating means.
Claim 13
Dependent Claim
97 words
An alphanumeric display comprising: input means for receiving visual informational pattern selection information; decoding means connected to said input means for selecting the desired information pattern; storage means for storing data selected by said decoding means; means for alternately receiving visual informational pattern data derived from said storage means, including at least first and second commutating means; means for alternately receiving and switching the output derived from said means for alternately receiving visual informational pattern data, including at least third commutating means; and synchroNizing means including means for controlling the operation of each of said commutating means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |