Patents by Inventor Johannes Drayyer

Johannes Drayyer 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).

  • Controller for a multistage space switching network
    Patent number: 4610011
    Abstract: This invention is a cost efficient controller for a space switching network for high voltage applications. This controller is operated by a CPU which provides for generating a minimal number of control signals for a multistage space switching network. For a space switching network of N stages, the present controller generates N+1 control signals for operating the space switching function. The CPU of this controller is adaptable to implementation via a microprocessor CPU. The present controller arrangement may be also employed for conventional non-high voltage space switching applications.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: September 2, 1986
    Assignee: GTE Communication Systems Corporation
    Inventor: Johannes Drayyer