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Browse Prior Art Database

Information Shifting Scheme

IP.com Disclosure Number: IPCOM000078672D
Original Publication Date: 1973-Feb-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Berger, HH: AUTHOR [+2]

Abstract

A symmetrical flip-flop is employed for detecting binary information, utilizing switches S1, S2 between each of the cross-coupling nodes and a proper reference voltage (preferably ground), so that the flip-flop is inactivated when the switches are on. The information signal differences applied to the nodes, cause the flip-flop to assume the state defined by the signal difference when switches S1, S2 are opened.

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Information Shifting Scheme

A symmetrical flip-flop is employed for detecting binary information, utilizing switches S1, S2 between each of the cross-coupling nodes and a proper reference voltage (preferably ground), so that the flip-flop is inactivated when the switches are on. The information signal differences applied to the nodes, cause the flip-flop to assume the state defined by the signal difference when switches S1, S2 are opened.

To form a shift register bit element, two of these flip-flops with switches S1, S2 are connected as shown in the drawing. Information is shifted from the master to the slave by opening flip-flop switches S1 and by charging the internal nodes of the slave flip-flop. The symmetry of this flip-flop is affected by the current difference through the decoupling elements shown as diodes D. This current difference depends on the state of the master flip-flop. Switches S2 are closed at about the same time as switches S1 are opened, to inactivate the master flip-flop after information transfer. For the next shifting cycle information is shifted from the slave flip-flop to the succeeding master flip-flop.

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