Patents by Inventor Carl M. Schneider

Carl M. Schneider has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electronic telephone system including interexchange trunk repeaters for traffic with other systems
    Patent number: 4105872
    Abstract: An electronic telephone switching system is described having peripheral units including a plurality of subscriber and line circuits, a plurality of trunk and tie line circuits, at least one attendant line circuit, a plurality of signaling tone receivers, and a plurality of link control circuits. Switching is carried out by a one wire speech path switching matrix and a one wire tone switching matrix. The system is centrally controlled and includes a central processing unit, a program memory, a scratch pad memory and a customer memory. Information, commands and addresses are communicated between the peripheral units and the central control and within the central control via bus lines. The bus lines between the peripheral units and the central control transmit data with lower rise time pulses than the bus lines interconnecting the components of the central control.
    Type: Grant
    Filed: March 1, 1977
    Date of Patent: August 8, 1978
    Assignee: Siemens Aktiengesellschaft
    Inventors: James L. Parise, Carl M. Schneider, John F. Farrell
  • Electronic telephone switching system comprising a speech-path switching matrix and tone-connecting matrix and employing electronic crosspoint switching devices
    Patent number: 4105875
    Abstract: An electronic telephone switching system is described having peripheral units including a plurality of subscriber and line circuit, a plurality of trunk and tie line circuits, at least one attendant line circuit, a plurality of signaling tone receivers, and a plurality of link control circuits. Switching is carried out by a one wire speech path switching matrix and a one wire tone switching matrix. The system is centrally controlled and includes a central processing unit, a program memory, a scratch pad memory and a customer memory. Information, commands and addresses are communicated between the peripheral units and the central control and within the central control via bus lines. The bus lines between the peripheral units and the central control transmit data with lower rise time pulses than the bus lines interconnecting the components of the central control.
    Type: Grant
    Filed: March 1, 1977
    Date of Patent: August 8, 1978
    Assignee: Siemens Aktiengesellschaft
    Inventors: Carl M. Schneider, Frederick W. Schimmel, John F. Farrell