US3588850A - Conductor path arrangement for fixed value storer - Google Patents

Conductor path arrangement for fixed value storer Download PDF

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Publication number
US3588850A
US3588850A US781159A US3588850DA US3588850A US 3588850 A US3588850 A US 3588850A US 781159 A US781159 A US 781159A US 3588850D A US3588850D A US 3588850DA US 3588850 A US3588850 A US 3588850A
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US
United States
Prior art keywords
transformer
rows
sections
conductor
conductor path
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
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US781159A
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English (en)
Inventor
Gunther Rapp
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens Corp
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Filing date
Publication date
Priority claimed from DE19671549066 external-priority patent/DE1549066B1/de
Application filed by Siemens Corp filed Critical Siemens Corp
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Publication of US3588850A publication Critical patent/US3588850A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
    • G11C17/02—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using magnetic or inductive elements

Definitions

  • ABSTRACT A fixed value storer for transformer cores, in which the transformer cores extend through openings in a sheet-form carrier which is provided with conductor paths for control, the configuration ofthe conductor paths determining the stored-in information by the particular magnetic linkages to the transformer cores.
  • This invention relates to magnetic memories and more particularly to information storers which employ magnetic couplings between reading windings andtransformers for determining the information content of the storers.
  • each transformer core is connected or not connected magnetically with one conductor path.
  • the information is stored in the sheet by the above techniques wherein the allocated transformer core may or 'may not be magnetically coupled to the conductor path.
  • the conductor path is correspondingly interrupted.
  • a logical 0" may be stored if the conductor path is interrupted in such a way that the drive current in the path which constitutes a reading winding flows outside and around the leg of the transformer core.
  • logical l may be stored if the conductor path is interrupted in such a way that the drive current can flow only between the legs of the transformer.
  • the form of the reading signals depends not only on the flux caused by the current in the transformer cores, since there exists a magnetic coupling to the immediately adjacent conductor paths and transformers.
  • the transformer rows are mainly influenced with interference effect by the adjacent conductor paths and adjacent transformer rows, respectively.
  • the consequences of such interfering couplings are that the reading signals of the transformer rows which are not adjacent each other are different from those of the transformer rows which are adjacent each other.
  • a disadvantage in evaluating the reading signals resides in the phase displacement which can exist between the reading signals of the transformer rows wherein the rows are not adjacent but somewhat coupled, and wherein the rows are adjacent and have a greater coupling.
  • the amplitudes of the reading signals are not uniform due to interfering couplings.
  • each sheet-formed carrier consists of two sections containing conductor paths and that for the magnetic decoupling of the transformers the adjacent conductor paths of the sections are driven in such a way that the drive current in these conductor paths flows in the same direction.
  • FIG. I is a schematic representation of a fixed value storer known in the prior art.
  • FIG. 2 is a schematic representation of a fixed value storer provided in accordance with the present invention.
  • FIG. 1 there is represented a fixed value storer wherein the form of the reading signals; in addition to depending upon the flux caused by the current in the transformer cores, also depends upon the particular magnetic couplings between the conductor paths and transformers.
  • the transformer cores (not shown) have their legs extending through pairs of vertically adjacent holes H provided in a carrier A.
  • the transformers rows RI and R4 are illustrated as being primarily in fluenced with interference effect by the adjacent conductor paths and the transformer rows R2 and R3, respectively, while the rows R2 and R3 are magnetically coupled with their respective conductor paths and transformer rows R1, R3 and R2, R4, respectively.
  • the consequences of these magnetic couplings are that the reading signals of the transformer rows R1 and R4 have a different form of those of the transformer rows R2 and R3.
  • the phase displacement which is provided due to such couplings between the reading signals of the transformer rows R1 and R4 and of the rows R2 and R3 is disad vantageous in evaluating the output signals.
  • the magnetic cross-couplings provide for a decrease in the amplitude of the reading signals.
  • the magnetic field of the conductor paths assigned to the transformer rows R1 and R3 interfere with the useful flux of the transformers in the transformer row R2.
  • current flow through the conductor paths assigned to the transformer rows R2 and R4 interfere with the useful flux of the transformers in the transformer row R3. Due to these flux interferences, the reading signals taken off at the reading windings of the transformers of rows R2 and R3 have a different shape than those taken off by the reading windings of the transformers of rows R1 and R4.
  • each sheet-formed character comprises a plurality of sections in which the conductor paths have a particular configuration which provides for a decoupling of the transformers.
  • FIG. 2 wherein a sheet-formed carrier 13 is provided into two sections S1 and S2.
  • Each section S1 and S2 consists of two conductor paths section L1, L2 and L3, L4, respectively.
  • the conductor sections Ll-L4 are connected in series.
  • the storing of information is provided as discussed with regard to the prior art apparatus.
  • the reading winding is wound onto one of the legs of the transforms (also not shown).
  • a drive current I is sent through the conductor paths. 1n the transformer cores which are magnetically coupled through the conductor path there arises a magnetic flux which induces a voltage in the corresponding reading windings. On this useful voltage there is heterodyned an interference voltage due to flux from the adjoining transformers and conductor sections, which interference flux distorts the reading signals.
  • the form of the signals read is therefore determined solely by the magnetic relations within the sections S1, S2. Since, however, it has already been stated that the reciprocal magnetic coupling of the transformer rows within the sections S1, S2 is the same, the form of the signals read from the reading windings of the transformer rows is the same.
  • the conductor path sections are connected in series.
  • the conductor path loop as viewed from the terminal points, in the section S1 runs in opposite direction than in the section S2 (see the arrows in FIG.
  • a fixed value storer of the type wherein the legs of transformer cores extend through openings of sheet-formed carriers, on which carriers are provided conductive path sections selectively embracing legs of the transformer cores to selectively store information
  • the improvement therein comprising the provision of a plurality of carrier sections each of which contains two of said conductor path sections connected in series circuit such that current in one of said two conductor path sections flows in the opposite direction with respect to the same current in the other of said two conductor path sections, and wherein the adjacent conductor path sections of adjacent carrier sections are disposed and connected in series such that the current through said adjacent conductor path sections is in the same direction to effect a magnetic decoupling between said adjacent carrier sections and between their associated transformer cores.

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US781159A 1967-12-12 1968-12-04 Conductor path arrangement for fixed value storer Expired - Lifetime US3588850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671549066 DE1549066B1 (de) 1967-12-12 1967-12-12 Festwertspeicher

Publications (1)

Publication Number Publication Date
US3588850A true US3588850A (en) 1971-06-28

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ID=5676617

Family Applications (1)

Application Number Title Priority Date Filing Date
US781159A Expired - Lifetime US3588850A (en) 1967-12-12 1968-12-04 Conductor path arrangement for fixed value storer

Country Status (3)

Country Link
US (1) US3588850A (enrdf_load_stackoverflow)
FR (1) FR1593401A (enrdf_load_stackoverflow)
GB (1) GB1234260A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
GB1234260A (enrdf_load_stackoverflow) 1971-06-03
FR1593401A (enrdf_load_stackoverflow) 1970-05-25

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