US4032796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logic dot-and gate circuits
Assignee: Samsung Electronics Co Ltd
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Filing: 1976-03-26
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Granted: 1977-06-28
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Expires: 1996-03-26
Abstract
Abstract A logic family is provided capable of accomplishing a logic function for each transistor used, i.e. one transistor per logic gate. A plurality of logic gate types are shown, each capable of a different logic function. These logic gate types can be connected with one another to provide the "DOT--AND" logic function.
Inventors
- 👤 David E. Fulkerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:20
CPC Classifications
H; H10; H10D; H10D89/00; H10D89/10; H03; H03K; H03K19/00; H03K19/01; H03K19/013; H03K19/02; H03K19/08; H03K19/082
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
A circuit for performing logical functions including a "DOT--AND" function, said circuit comprising: a non-inverting bipolar transistor having a non-inverting transistor base, a non-inverting transistor collector and a plurality of non-inverting transistor emitters therein, said non-inverting transistor emitters, including a first non-inverting transistor emitter, being inputs to receive signals from sources of signals excepting those said non-inverting transistor emitters which are directly connected to said non-inverting transistor base including a second non-inverting transistor emitter so connected; an inverting bipolar transistor having an inverting transistor collector, inverting transistor emitter and a plurality of inverting transistor bases therein, said inverting transistor bases being inputs to receive signals from sources of signals, said inverting transistor collector being directly connected to said non-inverting transistor collector; and a first resistor connected between said non-inverting transistor base and a first terminal means adapted for connection to a voltage source, whereby a logic gate circuit capable of performing said "DOT--AND" function is provided.
Claim 2
Dependent Claim
156 words
A circuit for performing logical functions including a "DOT--AND" function, said circuit comprising: a non-inverting bipolar transistor having a non-inverting transistor base, a non-inverting transistor collector and a plurality of non-inverting transistor emitters therein, said non-inverting transistor emitters, including a first non-inverting transistor emitter, being inputs to receive signals from sources of signals excepting those said non-inverting transistor emitters which are directly connected to said non-inverting transistor base including a second non-inverting transistor emitter so connected; an inverting bipolar transistor having an inverting transistor collector, inverting transistor emitter and a plurality of inverting transistor bases therein, said inverting transistor bases being inputs to receive signals from sources of signals, said inverting transistor collector being directly connected to said non-inverting transistor collector; and a first resistor connected between said non-inverting transistor base and a first terminal means adapted for connection to a voltage source, whereby a logic gate circuit capable of performing said "DOT--AND" function is provided.
Claim 3
Dependent Claim
28 words
The circuit of claim 1 wherein a second resistor is connected between said non-inverting transistor collector and a second terminal means adapted for connection to a voltage source.
Claim 4
Dependent Claim
28 words
The circuit of claim 1 wherein a third resistor is connected between said inverting transistor emitter and a third terminal means adapted for connection to a voltage source.
Claim 5
Dependent Claim
16 words
The circuit of claim 2 wherein said second terminal means is also said first terminal means.
Claim 6
Dependent Claim
28 words
The circuit of claim 2 wherein a third resistor is connected between said inverting transistor emitter and a third terminal means adapted for connection to a voltage source.
Claim 7
Dependent Claim
16 words
The circuit of claim 5 wherein said second terminal means is also said first terminal means.
Claim 8
Dependent Claim
23 words
The circuit of claim 5 wherein a Schottky diode is connected from one of said inverting transistor bases to said inverting transistor collector.
References Cited (Backward Citations)
US3233125A
Cited
US3414783A
Cited
US3560761A
Cited
US3571616A
Cited
US3699362A
Cited
US3790817A
Cited
US3751680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |