US3230610A - Core matrix assembly - Google Patents

Core matrix assembly Download PDF

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Publication number
US3230610A
US3230610A US422069A US42206964A US3230610A US 3230610 A US3230610 A US 3230610A US 422069 A US422069 A US 422069A US 42206964 A US42206964 A US 42206964A US 3230610 A US3230610 A US 3230610A
Authority
US
United States
Prior art keywords
tubes
apertures
cores
members
core matrix
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
US422069A
Other languages
English (en)
Inventor
Otto A Gutwin
Kurt R Grebe
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 NL268537D priority Critical patent/NL268537A/xx
Priority to GB30254/61A priority patent/GB975674A/en
Priority to FR871803A priority patent/FR1298774A/fr
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to US422069A priority patent/US3230610A/en
Application granted granted Critical
Publication of US3230610A publication Critical patent/US3230610A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49069—Data storage inductor or core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49799—Providing transitory integral holding or handling portion

Definitions

  • Magnetic core memory matrices employed in electronis computers must be capable of operating at high speeds in storing and reading out the information retained therein.
  • One of the major efforts in the art has been to increase the speed of such memories and yet maintain fabrication costs at a minimum.
  • a general approach to the problem has been to alter the properties of the cores employed. Since it has been recognized that the cycle time of a memory is dependent upon the coercive force, switching parameter and total flux switched in an individual core, the material with which the cores are fabricated have been altered to exhibit a different coercive force, and/or better switching parameters.
  • a core matrix assembly according to this invention, comprises a non-magnetizable base plate having a plurality of apertured members integrally mounted thereon.
  • the members define a flux path about each aperture therein and are made of magnetic material exhibiting different states of stable flux remanence with the members so mounted on the base plate that the central axis of the apertures thereof are parallel to the plane of the base plate.
  • Each member has a given thickness while each aperture therein has a given diameter.
  • the spacing between members is then determined by the diameter of the apertures and the thickness of the members so that a straight line access is available through the aperture of one member and apertures of suceeding members whose central axes are not in alignment with one another.
  • the arrangement of apertures may be considered to be in columns and rows, and the straight line r erred to is described by a line drawn through one aperture of a given row and column and the apertures of successive columns and rows.
  • Each of the individual apertures and the material surrounding them represents an individual core, with the cores integrally held to the base plate to eliminate handling difficulties and provide a heat sink therefor while the package presents a convenient structure for threading purposes.
  • Another object of this invention is to provide an improved core matrix structure wherein the cores are very small and conveniently presented for threading operations.
  • Still another object of this invention is to provide an improved core matrix structure wherein the cores are rigidly supported for ease of handling and conveniently presented for threading purposes.
  • Still another object at this invention is to provide a novel core matrix structure wherein the size of the cores employed is materially reduced as compared to existing cores and conveniently presented for threading operations while rigidly supported for ease of handling and provided with a heat sink for cooling thereof.
  • FIG. 1 is a top view of a matrix structure in one phase of its fabrication.
  • FIG. 2 is a top view of a matrix structure according to one embodiment of this invention.
  • FIG. 3 is a front view of a matrix structure according to this invention.
  • FIG. 1 A top view of an assembly in one phase of its fabrication according to this invention is shown in the FIG. 1.
  • a non-magnetizab-le base plate 10 made up of a ceramic or glass material having fastened thereto tubes 12a-12h.
  • the tubes 12 are made of magnetic material such as ferrite which exhibits different stable states of remanent magnetization, commonly known in the art as rectangular loop material.
  • the tubes 12 are fastened to the base plate 10 and to each other by any suitable means such as glyptol-thyolite, quartz cement or a glass-like epoxy resin.
  • Each of the tubes 12 are preferably fabricated by an extrusion technique and in a preferred embodiment have an outside diameter of 0.018 inch and an inside diameter of 0.013 inch.
  • the assembly of FIG. 1 is then subjected to a cutting step wherein the tubes 12 are sliced into segments by means of an ultrasonic cutter or diamond saw, with the material between desired segments removed.
  • each member 14 has a thickness of 0.010 inch and is separated from adjacent members by a distance of approximately 0.020 inch.
  • each member 14 having a thickness of 0.010 inch with a separation of 0.020 inch between members, the structure presents a convenient package for threading techniques.
  • a plurality of vertical drive lines Y are threaded through the apertures 16 of the members 14 with each drive line Y individually threaded through the apertures 16 in a vertical column.
  • the drive lines Y may then be considered as the column drive lines in a conventional memory matrix.
  • a plurality of X drive lines are provided with the drive lines X considered as the horizontal or row drive lines of a conventional matrix.
  • Each drive line X threads the apertures 16 of the different members 14 in a diagonal fashion. Due to the diameter of each of the apertures 16 and the thickness of the members 14, the distance between the members 14 is so chosen that the apertures 1:: describe a straight line in a diagonal direction, thereby presenting easy access thereto for threading of the X drive lines.
  • a method for constructing a row by column ferrite memory array comprising the steps of:
  • a method for constructing a row by column ferrite memory array comprising the steps of:
  • a method for constructing a row by column ferrite memory array comprising the steps of:

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Magnetic Heads (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US422069A 1960-08-29 1964-12-21 Core matrix assembly Expired - Lifetime US3230610A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL268537D NL268537A (forum.php) 1960-08-29
GB30254/61A GB975674A (en) 1960-08-29 1961-08-22 Core matrix assembly
FR871803A FR1298774A (fr) 1960-08-29 1961-08-29 Assemblage de matrice de noyaux magnétiques
US422069A US3230610A (en) 1960-08-29 1964-12-21 Core matrix assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5243960A 1960-08-29 1960-08-29
US422069A US3230610A (en) 1960-08-29 1964-12-21 Core matrix assembly

Publications (1)

Publication Number Publication Date
US3230610A true US3230610A (en) 1966-01-25

Family

ID=26730599

Family Applications (1)

Application Number Title Priority Date Filing Date
US422069A Expired - Lifetime US3230610A (en) 1960-08-29 1964-12-21 Core matrix assembly

Country Status (3)

Country Link
US (1) US3230610A (forum.php)
GB (1) GB975674A (forum.php)
NL (1) NL268537A (forum.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3506976A (en) * 1967-06-12 1970-04-14 Sperry Rand Corp Synthetic monolithic ferrite array
US3872454A (en) * 1973-12-13 1975-03-18 Electronic Memories & Magnetic Skewed core matrix

Non-Patent Citations (1)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3506976A (en) * 1967-06-12 1970-04-14 Sperry Rand Corp Synthetic monolithic ferrite array
US3872454A (en) * 1973-12-13 1975-03-18 Electronic Memories & Magnetic Skewed core matrix

Also Published As

Publication number Publication date
GB975674A (en) 1964-11-18
NL268537A (forum.php)

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