Patents by Inventor Sigmar Grutzmann

Sigmar Grutzmann 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).

  • Patent number: 4276642
    Abstract: A process is disclosed for frame synchronization in a time division multiplex system which, while ensuring a high degree of synchronization reliability, requires only a small transmission capacity. In accordance with the invention, before a synchronous state is reached, a synchronization alarm (SA=1) is given and the recognition of two consecutive synchronizing words (100010) defines the beginning of a test period (P). If synchronizing words (100010) are constantly received during this test period (P), the synchronization alarm (SA=1) is disconnected. If only one single synchronizing word (100010) is not recognized during the test period (P), the synchronization alarm continues. Commencing from the synchronous state, the synchronization alarm is given if a plurality of synchronizing words are not recognized (FIGS. 3 to 6).
    Type: Grant
    Filed: March 6, 1979
    Date of Patent: June 30, 1981
    Assignee: Siemens Aktiengesellschaft
    Inventors: Joachim Siglow, Sigmar Grutzmann, Erwin Schenk