US3178694A - Shift register - Google Patents

Shift register Download PDF

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Publication number
US3178694A
US3178694A US360167A US36016764A US3178694A US 3178694 A US3178694 A US 3178694A US 360167 A US360167 A US 360167A US 36016764 A US36016764 A US 36016764A US 3178694 A US3178694 A US 3178694A
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US
United States
Prior art keywords
core
cores
aperture
flux
advance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US360167A
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English (en)
Inventor
John C Mallinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Corp
Original Assignee
AMP Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL267695D priority Critical patent/NL267695A/xx
Priority to GB28756/61A priority patent/GB923538A/en
Priority to CH972061A priority patent/CH396098A/de
Priority to FR871122A priority patent/FR1297694A/fr
Application filed by AMP Inc filed Critical AMP Inc
Priority to US360167A priority patent/US3178694A/en
Application granted granted Critical
Publication of US3178694A publication Critical patent/US3178694A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
    • G11C19/06—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using structures with a number of apertures or magnetic loops, e.g. transfluxors laddic

Definitions

  • An object of, theinvention is to provide: a magnetic core memory" and signalztranslatingdevice havingximproved performance and operation over 'a widestempera lure. range.
  • Anotherobject is-to. simplify the'wiringof' a shift register.
  • i v i A-further object is to providea v.wiring'scheme for:a shift register "which lessens the electrical. drive require-- ments of the register.
  • This shift register circuit is much more.-stable.and. re-' liable inits operation than earlier shift registers. but. even so it has certain limitations.
  • Each coupling windingbe tween two successivecores has-no blocking diode hit and thus would permit an advancedrive pulse applied to. a succeeding core to act adversely on the preceding.
  • the: cores are provided with a holdwinding in'addition to the-drive windings.
  • the hold .winding is inseries with the'advancewindings and serves to apply, to the proper'cores intheregister, when an'advance pulse is applied.
  • This arrangement works quite well but'thenneedi-for the hold windingimposes an important restriction. For'best' operation. of thetregister there shouldbe unity turns-ratio between'the hold. andzadvance windings. hold. windingmust be threaded. through the minor output apertures of the cores and because ihESQQPGHUI'CSIfiIB small (about the size of a pin) only a limited number of turns of the holdwinding can bethreadedthrough.
  • FIGURE 'l is a schematic representation. of'a shift register embodyingifeatures of the invention.
  • FIGURE 2. is a. wiring :diagram of the shift register
  • FIGURES 3 1,'b, c, d and e are diagramsshowing the conditions of the magnetic lines: of'fliix: inrthevarious cores ofthe register after "each successive drive pulse;
  • shift register x can-be generally thecsame'as for the one'disclosed in'rtheaforesaid patent.
  • the :fiiSti O'core designatedby numeral 11,.
  • Each of theminor apertures 13,171and 22 of the cores 1 shown; receives threeaturns of a prime windingq24- which after "passing through all of the minor apertures makes a.
  • coupling loop 16 encircles the outer leg of the core at minor aperture 13 and the inner leg at minor aperture 17 of core 18 in the relative senses indicated.
  • a one-to-one turns ratio in the coupling loop can be used, but two-to-one ratio as shown, insures that the flux switched about minor aperture 13 will cause the same amount of flux to be switched about aperture 17, and so on. Thus, there will be no loss in the amount of flux transferred from core to core along the register.
  • This coupling loop configuration prevents an advance pulse applied to a core from feeding flux backward through a coupling loop, whilst still permitting forward fiux transfer.
  • the lines of flux about minor aperture 17, as indicated in FIGURE 3c will be in the set state, that is, the flux in the inner leg will be up or counter-clockwise, and the flux in the outer leg down or clockwise. Priming causes the flux to reverse about minor aperture 17, as indicated in FIGURE 31!, and now the flux in the inner leg is down or clockwise.
  • a shift register circuit for transferring binary intelligence in a controlled manner comprising a plurality of multia-perture magnetic cores each having a major aperture and a minor aperture, the said cores being divided into odd and even groups and threaded by a drive circuit capable of applying drive current to said cores to advance intelligence along said register through turns linking said cores and experiencing said drive current, the said circuit including a first advance winding threading the major apertures of the cores of one group in a sense to apply clockwise magnetomotive force with respect to the major aperture thereof, a second advance winding threading the major apertures of the cores of the other group in a sense to apply a clockwise magnetomotive force to the core material with respect to the major aperture thereof, a prime winding threading in series by several turns the minor apertures of the cores of both groups in a sense to apply magnetomotive force in a counterclockwise sense relative to said core major aperture and then in series by a lesser number of turns threading the major apertures of the cores of both groups in a sense

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  • For Increasing The Reliability Of Semiconductor Memories (AREA)
  • Coils Or Transformers For Communication (AREA)
US360167A 1960-08-19 1964-04-10 Shift register Expired - Lifetime US3178694A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL267695D NL267695A (enrdf_load_stackoverflow) 1960-08-19
GB28756/61A GB923538A (en) 1960-08-19 1961-08-09 Magnetic core memory device
CH972061A CH396098A (de) 1960-08-19 1961-08-17 Verschieberegister mit einer Anzahl Magnetkernen
FR871122A FR1297694A (fr) 1960-08-19 1961-08-18 Dispositif mémoratif à noyaux magnétiques
US360167A US3178694A (en) 1960-08-19 1964-04-10 Shift register

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5069560A 1960-08-19 1960-08-19
US360167A US3178694A (en) 1960-08-19 1964-04-10 Shift register

Publications (1)

Publication Number Publication Date
US3178694A true US3178694A (en) 1965-04-13

Family

ID=26728554

Family Applications (1)

Application Number Title Priority Date Filing Date
US360167A Expired - Lifetime US3178694A (en) 1960-08-19 1964-04-10 Shift register

Country Status (4)

Country Link
US (1) US3178694A (enrdf_load_stackoverflow)
CH (1) CH396098A (enrdf_load_stackoverflow)
GB (1) GB923538A (enrdf_load_stackoverflow)
NL (1) NL267695A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349380A (en) * 1963-08-30 1967-10-24 Amp Inc Circuit for multi-aperture magentic core devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349380A (en) * 1963-08-30 1967-10-24 Amp Inc Circuit for multi-aperture magentic core devices

Also Published As

Publication number Publication date
CH396098A (de) 1965-07-31
GB923538A (en) 1963-04-10
NL267695A (enrdf_load_stackoverflow)

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