Static information storage and retrieval – Read/write circuit – For complementary information
Patent
1979-12-27
1981-11-24
Hecker, Stuart N.
Static information storage and retrieval
Read/write circuit
For complementary information
365154, G11C 700, G11C 1140
Patent
active
043028233
ABSTRACT:
A sensing system is provided for a memory cell having first and second transistors with first and second diffusion capacitances, respectively, storing unequal amounts of charge which are coupled to first and second bit lines, respectively. The cell is preferably a four device integrated injection logic or merged transistor logic bipolar cell. The charges represent stored information and are maintained in a standby condition by maintaining a charge on the bit lines. When the information is to be sensed, the bit lines are discharged through the cell to enhance the charge difference in the diffusion capacitances. The charge now stored in the diffusion capacitances is transferred onto the bit lines and detected by a differential sensing circuit connected between the first and second bit lines to which are connected first and second equal valued resistors, respectively. The charge in the diffusion capacitances which results after enhancement may be transferred onto the bit lines by discharging the bit lines through the two resistors or by pulsing up the diffusion capacitances from a terminal remote from the bit lines to force the charge onto the bit lines.
REFERENCES:
patent: 3736477 (1973-05-01), Berger et al.
patent: 3815106 (1974-06-01), Wiedmann
patent: 3816758 (1974-06-01), Berger et al.
patent: 3863229 (1975-01-01), Gersbach
patent: 4021786 (1977-05-01), Peterson
patent: 4027176 (1977-05-01), Heuber et al.
patent: 4032902 (1977-06-01), Herndon
patent: 4081697 (1978-03-01), Nakano
Mayumi et al, "A 25-ns Read Access Bipolar 1K bit TTL RAM", IEEE Journal of Solid-State Circuits, 10/74, pp. 283-284.
Berger et al, "Merged-Transistor Logic (MTL)-A Low-Cost Bipolar Logic Concept", _IEEE Jour. of Solid-State Circuits, vol. SC-7, No. 5, 10/72, pp. 340-346.
Ayling, "Differential Signal Phase Sensing and Latching Detector", IBM Tech. Disc. Bul., vol. 14, No. 6, 11/71, p. 1674.
Cordaro et al., "Amoeba Sense Amplifier and Regenerator", IBM Tech. Disc. Bul., vol. 21, No. 4, 9/78, pp. 1479-1482.
Gersbach John E.
Kim Ick W.
Zehle Adolf M.
Hecker Stuart N.
International Business Machines Corp.
Limanek Stephen J.
LandOfFree
Differential charge sensing system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential charge sensing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential charge sensing system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2178219