Patents Represented by Attorney, Agent or Law Firm Herbert M. Shapiro
  • Magnetic bubble detector
    Patent number: 4019177
    Abstract: A permalloy magnetic bubble detector employing a number of chevron elements in a detector stage of a bubble expansion detector is improved by the reduction in cross section of the legs of the chevron elements in strategic locations.
    Type: Grant
    Filed: March 10, 1976
    Date of Patent: April 19, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Terence John Nelson
  • Magnetic bubble propagate arrangement
    Patent number: 4014009
    Abstract: Improved magnetic bubble memory operation is achieved with an asymmetric half-disc design for a propagate pattern operative to move the bubbles in a "field-access" mode of operation. The pattern ensures the continuous presence of a elongated supportive magnetic pole geometry for the bubbles during operation.
    Type: Grant
    Filed: November 5, 1975
    Date of Patent: March 22, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Peter Istvan Bonyhard, Yu-Ssu Chen, James Lanson Smith
  • Magnetic bubble replicator
    Patent number: 4012726
    Abstract: An improved magnetic bubble replicator is characterized by relatively high bias and phase margins. Both the orientation of a replicate conductor with respect to a permalloy replicator element and the shape of the replicator element are shown to be important in determining those margins. Such replicators are typically employed to produce an image of a bubble pattern in a channel adjacent a plurality of closed loop paths in which the bubble pattern moves.
    Type: Grant
    Filed: December 23, 1975
    Date of Patent: March 15, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Peter Istvan Bonyhard, James Lanson Smith
  • Magnetic bubble signal generator
    Patent number: 4010454
    Abstract: A magnetic memory including a number of magnetic bubble recirculating loops and a common channel controls the frequency of signals generated by flip-flops connected to a bubble detector in the common channel. A choice of two-out-of-seven loops for bubble storage permits the control of the flip-flops in a manner to provide a multi-frequency output useful for TOUCH-TONE telephone dialing operation.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: March 1, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Andrew Henry Bobeck, Irynej Danylchuk
  • Magnetic bubble, field-access memory having offset propagate element design
    Patent number: 4007447
    Abstract: A magnetic bubble, field-access memory with a relatively high packing density is achieved by offsetting the elements of one leg of a recirculating loop with respect to the elements of the other. Beneficial loop turn geometries are allowed also by the offset design.
    Type: Grant
    Filed: July 1, 1975
    Date of Patent: February 8, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Andrew Henry Bobeck
  • Magnetic bubble memory organization
    Patent number: 4007453
    Abstract: A magnetic bubble memory operative in the field-access mode is organized with separate read and write major channels accessing the same plurality of minor loops. The permalloy elements characteristic of field-access bubble memories define a novel swap function at each position at which data is moved between a stage of the write major channel and the associated minor loop. Improved data rates are achieved.
    Type: Grant
    Filed: March 31, 1975
    Date of Patent: February 8, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Peter Istvan Bonyhard, Yu-Ssu Chen, James Lanson Smith
  • Magnetic bubble, field-access assembly
    Patent number: 3996574
    Abstract: A dual-in-line package (DIP) for a bubble memory is achieved by mounting the bubble chip in a cantilevered position in the plane of a rigid conductor arrangement which is interconnected to a DIP base. The lead track arrangement forms a rigid support for the chip fixing the chip in a position for receiving the orthogonal coils which characteristically supply the rotating field for field-access bubble operation.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: December 7, 1976
    Assignees: Western Electric Company, Inc., Bell Telephone Laboratories, Incorporated
    Inventors: Andrew Henry Bobeck, Bruce Hamilton McGahey, William Martin Melbert, Jr., Terry Brice Prince, Martin James Stevenson