Patents by Inventor Edwin R. Tarmain

Edwin R. Tarmain 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: 4183054
    Abstract: A television communication system distributes plural VSB digitally encoded TV channels via an optical transmission link to one or more distribution terminals. At the headend the frequency band of each of the VSB signals is shifted down to baseband and transmitted in digital format. At each station along the network, the digitized baseband VSB television signal is converted into analog format and then reshifted through an up-converter to its original IF band so as to be compatible with the television receiver circuitry of the subscribers served by the distribution station. Advantageously, the present invention may employ optical communication techniques for coupling the digitally encoded frequency-shifted VSB television signals between stations. To maintain signal strength and quality, repeater units may be located in the optical communication link.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: January 8, 1980
    Assignee: Harris Corporation
    Inventors: Charles R. Patisaul, Fred R. McDevitt, Edwin R. Tarmain, Donald G. Monteith