Static information storage and retrieval – Read only systems – With override
Patent
1982-12-29
1983-11-29
Hecker, Stuart N.
Static information storage and retrieval
Read only systems
With override
365156, G11C 1700, G11C 1140
Patent
active
044184018
ABSTRACT:
An asymmetric RAM cell is disclosed which will have a predictable initial storage state when pulsed drain voltage is turned on and yet after the initial turn-on interval, will operate in a symmetric fashion storing either binary ones or zeros. Thus, an initial prestored set of information can be permanently provided in a memory array made up of such cells, by orienting each individual cell at the time of manufacture so as to selectively represent either a binary one or zero. This is illustrated in the FIGURE where the upper cell has a first state by virtue of its orientation and the lower cell has a second, opposite state by virtue of its relative opposite orientation. When the array is turned on, the upper cell will have the opposite binary state from the lower cell. Thereafter, each cell can be respectively switched for storing ones and zeros in a normal RAM operating mode.
REFERENCES:
patent: 3662351 (1972-05-01), Ho et al.
patent: 3755793 (1973-08-01), Ho et al.
patent: 3798621 (1974-03-01), Baitlinger et al.
patent: 3801967 (1974-04-01), Berger et al.
patent: 3820086 (1974-06-01), Ho et al.
patent: 3820088 (1974-06-01), Hadni et al.
patent: 4149268 (1979-04-01), Waters
patent: 4207615 (1980-06-01), Mar
patent: 4289982 (1981-09-01), Smith
Balasubramanian et al., "Monolithic Storage Cell Having Inherent Latent Image Memory Operation", IBM Tech. Disc. Bul., vol. 17, No. 12, 5/75, pp. 3634-3635.
Hecker Stuart N.
Hoel John E.
IBM Corporation
LandOfFree
Latent image ram cell does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Latent image ram cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Latent image ram cell will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-610336