Patents Represented by Attorney George E. Roush
  • Patent number: 3983332
    Abstract: Conference call provisions are incorporated in a Time Division Multiplex (TDM) signalling exchange wherein the signals are summed energywise and transmitted to a receiving subscriber set without subtracting the signal from that subscriber set and any tendency toward regeneration is obviated by filtered signal reconstruction in conjunction with sample-and-hold signal reconstruction of the TDM signalling system. Simple low-pass, high-pass and band-shaping filters are adequate for the purpose.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: September 28, 1976
    Assignee: International Business Machines Corporation
    Inventor: Michael Allen Patten
  • Patent number: 3965408
    Abstract: Standard configuration a.c. power transformer core sections are combined with standard configuration solenoid winding sections to provide a saturable core transformer which is arranged to be driven into saturation by applied alternating and direct current energy with the control of variations in flux changes up to saturation exercised by the direct current flow. A center tapped primary winding is arranged on an I-shaped stack of transformer iron laminations for full-wave excitation. A C-shaped stack of laminations is arranged adjacent to the I-shaped stack and separated by an air gap whereby the primary winding also serves as an input filter choke. The core structure is completed by an E-shaped stack of laminations arranged adjacent to the I-shaped stack and separated by another air gap. Two solenoid windings are arranged on the outer legs of the E-shaped stack and connected to a capacitor for resonating the overall ferroresonant transformer circuit arrangement.
    Type: Grant
    Filed: December 16, 1974
    Date of Patent: June 22, 1976
    Assignee: International Business Machines Corporation
    Inventors: Hobart Atsushi Higuchi, Lawrence Paul Trubell
  • Patent number: 3959604
    Abstract: Calling signals for tone-frequency telephone calling and like communications systems are generated in digital form. For the eight tone frequencies used in American telephone systems, a group of about 50 bits (average) for each tone is stored in an electronic store in delta modulation data form. Circuitry according to the invention is arranged for repetitively reproducing the contents of the store to produce a substantially continuous waveform. Bits for one high frequency band tone and one low frequency band tone are selectively reproduced and applied to a delta demodulation circuit for producing the desired tone-frequency analog signal. In a basic embodiment, start-stop operation is used for producing a calling signal for a single switching operation. A continuously operating tone frequency generating circuit embodiment is arranged for producing a multiple of continuously available tone signalling outputs.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: May 25, 1976
    Assignee: International Business Machines Corporation
    Inventors: Harley Monroe Newsom, Michael Allen Patten
  • Patent number: 3947816
    Abstract: An omnidirectional optical system is arranged for scanning bar coded labels passing a rectangular scanning window with a plurality of interlaced scans in a plurality of differing directions whereby the labels are completely scanned irrespective of orientation. The interlaced and plural directive scanning rays are generated by directing a beam of light, from a laser or like light source, onto a rotating multi-faceted mirror for deflecting the light beam in a line extending in a given direction. A set of fixed mirrors is positioned to deflect the light beam in a number of laterally displaced scanning segments all parallel to the line extending in the given direction. A pair of fixed end mirrors are arranged for reflecting the light from half of the segments back onto the other half of the segments to provide the intersecting scanning pattern.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: March 30, 1976
    Assignee: International Business Machines Corporation
    Inventor: Melbourne Edward Rabedeau