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Patent US3618046A successfully refreshed from Google Patents.
US3618046A
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US
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Bilevel semiconductor memory circuit with high-speed word driver
Assignee: Cogar Corp
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Filing: 1970-03-09
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Granted: 1971-11-02
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Expires: 1990-03-09
Abstract
Abstract This disclosure relates to a semiconductor memory circuit wherein the word drive signal increases the power of the circuit as it enables selection. A high-speed word driver increases the speed of the storage element''s response to the word drive signal. The increased power is achieved by effectively reducing an impedance in the collector power supply circuit upon the appearance of the word drive signal. The increased response speed is achieved by means of a parallel connection of the word drive signal directly to the storage elements of the memory circuit.
Inventors
- 👤 Richard W Bryant
- 👤 George K Tu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:50
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/41; G11C11/411; G11C11/4116; H; H03; H03K; H03K3/00; H03K3/01; H03K3/012; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/288; H03K3/35; H10; H10D; H10D84/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
36 words
A semiconductor memory circuit in accordance with claim 1 wherein said word drive signal means supplying current to collectors and a high voltage to emitters of said pair of transistor devices comprises a dual-emitter transistor device.
Claim 2
Dependent Claim
57 words
A semiconductor memory circuit in accordance with claim 2 wherein said word drive signal means supplying a high voltage to emitters of said pair of transistor devices comprises a diode, the anode of said diode being connected to said dual-emitter transistor device, the cathode of said diode being connected to emitters of said pair oF transistor devices.
Claim 3
Dependent Claim
31 words
A semiconductor memory circuit in accordance with claim 1 wherein said pair of transistor devices connected to each other in a bistable multivibrator configuration comprises a pair of dual-emitter transistor devices.
Claim 4
Dependent Claim
32 words
A semiconductor memory circuit in accordance with claim 4 wherein one emitter of each of said pair of dual-emitter transistor devices being connected in common and to said word drive signal means.
Claim 5
Dependent Claim
40 words
A semiconductor memory circuit in accordance with claim 5 wherein said word drive signal means comprises a dual-emitter transistor device and a diode connected between said dual-emitter transistor device and said common emitter of said pair of dual-emitter transistor devices.
Claim 6
Dependent Claim
31 words
A semiconductor memory circuit in accordance with claim 6 wherein said bit and sense lines being identical lines connected to the noncommon emitters of the said pair of dual-emitter transistor devices.
Claim 7
Dependent Claim
36 words
A semiconductor memory circuit in accordance with claim 6 including an impedance located between each of said collectors of said pair of dual-emitter transistor devices and said dual-emitter transistor device of said word drive signal means.
Claim 8
Dependent Claim
30 words
A semiconductor memory circuit in accordance with claim 8 including an impedance located between ground and a common node of said common emitter of said pair of dual-emitter transistor devices.
Claim 9
Dependent Claim
36 words
A semiconductor memory circuit in accordance with claim 9 including an impedance connected between a voltage supply and a common node located between each said impedance of said collectors of said pair of dual-emitter transistor devices.
References Cited (Backward Citations)
US3423737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |