Patents by Inventor Eric M. Aker

Eric M. Aker 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).

  • Single-wire data transmission system having bidirectional data synchronization, and D.C. power for remote units
    Patent number: 4477896
    Abstract: A communication system is described in which information may be simultaneously transmitted in both directions over a single common wire between a base unit and a plurality of remote units. The information from the remote units is sent in the form of time divided multiplexed current pulses and the information from the base units is sent in the form of time divided voltage pulses. Optionally, the voltage signals ride on top of a D.C. potential which is extracted at the remoted units to power them.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: October 16, 1984
    Inventor: Eric M. Aker