公开(公告)号：DE1202332B

公开(公告)日：1965-10-07

申请号：DEJ0023939

申请日：1963-06-25

Applicant: IBM

Inventor： BARTKUS EDWARD ALFRED ,  ELFANT ROBERT FREDERICK ,  GREBE KURT RUDOLPH ,  MAZZEO NICHOLAS JOSEPH

IPC: G11C7/02 ,  G11C11/06

Abstract: 1,023,627. Magnetic storage devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 26, 1964 [Nov. 21, 1963], No. 43506/64. Addition to 998,891. Heading H3B. [Also in Division H1] The tubular storage device described in the parent Specification is modified by the use of hole pairs for the conductors B in the form of two parallel slits 18 arranged longitudinally of the tube 12, each conductor B being made of strip material. The tube is formed by a magnetic U-shaped trough 14 and a magnetic closure plate 16, the same or different materials being used. The magnetization characteristic of the magnetic material need not be rectangular.

公开(公告)号：DE1256694B

公开(公告)日：1967-12-21

申请号：DEJ0026415

申请日：1964-08-17

Applicant: IBM

Inventor： ELFANT ROBERT FREDERICK

IPC: G11C11/06

Abstract: 1,056,789. Circuits employing bi-stable magnetic elements. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 11, 1964 [Aug. 19, 1963], No. 32645/64. Heading H3B. [Also in Division H1] Information is stored in a magnetic memory element by remanent fluxes having the same orientation but different distributions. Element 10 has a wire W for generating a first magnetic field and a wire B connected to generators 28, 30 for supplying both positive and negative pulses thereto. However, as described, the device is capable of use with pulses of only one polarity to permit a uni-polar output to be produced, as claimed in Specification 1,004,932, and four different read-write cycles for generating unipolar outputs are described each being preceded by a positive clearing pulse on wire W. In the first a " 0 " is written by a positive pulse on wire W and a " 1 " is written by positive pulses on both wires W and B, the B pulse having a smaller amplitude than the W pulse and terminating after it. This causes some of the lines of flux 34 to traverse the magnetic core material above wire B, as at 36 (Fig. 4c, not shown). For read-out a positive pulse of lower energy content, but possibly greater amplitude or duration, than the write pulse is applied to wire W to disturb flux lines 36 and generate an output pulse in wire B when a " 1" is stored, without destroying the information. In the second arrangement the same pulses are applied to wire W but to store a "1 " a negative pulse is applied to wire B. The sense of the output pulse during readout is then reversed. The third arrangement uses a negative pulse on wire W for storing a "0," combined with a positive B pulse for storing a "1." The write pulse on wire W has a lower energy content than the clear pulse. The negative read pulse applied to wire W may have a greater energy content than the write pulse but should not exceed the energy of the clear pulse. The fourth arrangement is similar but uses a negative pulse on wire B for storing a " 1." For producing a bi-polar output a " 0 " and " 1 " are stored using positive and negative pulses on wire B in conjunction with the write pulse. It is stated that element 10 may consist of non-remanent material overlaid with a remanent layer. A magnet matrix store is described.

公开(公告)号：DE1268674B

公开(公告)日：1968-05-22

申请号：DE1268674

申请日：1964-11-14

Applicant: IBM

Inventor： JUN LAWRENCE RICHARDSON BICKFO ,  ELFANT ROBERT FREDERICK

IPC: G11C7/02 ,  G11C11/06 ,  G11C11/02

Abstract: 1,023,627. Magnetic storage devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 26, 1964 [Nov. 21, 1963], No. 43506/64. Addition to 998,891. Heading H3B. [Also in Division H1] The tubular storage device described in the parent Specification is modified by the use of hole pairs for the conductors B in the form of two parallel slits 18 arranged longitudinally of the tube 12, each conductor B being made of strip material. The tube is formed by a magnetic U-shaped trough 14 and a magnetic closure plate 16, the same or different materials being used. The magnetization characteristic of the magnetic material need not be rectangular.

公开(公告)号：DE1186509B

公开(公告)日：1965-02-04

申请号：DEJ0023925

申请日：1963-06-22

Applicant: IBM

Inventor： ELFANT ROBERT FREDERICK ,  GREBE KURT RUDOLPH

IPC: G11C7/02 ,  G11C11/06

Abstract: 1,023,627. Magnetic storage devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 26, 1964 [Nov. 21, 1963], No. 43506/64. Addition to 998,891. Heading H3B. [Also in Division H1] The tubular storage device described in the parent Specification is modified by the use of hole pairs for the conductors B in the form of two parallel slits 18 arranged longitudinally of the tube 12, each conductor B being made of strip material. The tube is formed by a magnetic U-shaped trough 14 and a magnetic closure plate 16, the same or different materials being used. The magnetization characteristic of the magnetic material need not be rectangular.