Patents by Inventor Steve Douglas Thatcher

Steve Douglas Thatcher 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: 4112380
    Abstract: This invention relates to a clock sequencing apparatus which allows for clock stoppage at the end of a particular clock sequence without a false decoding of clock pulses at the beginning of what would have been the next clock sequence. This result is accomplished by providing a multi-state sequential apparatus having more states than clock phases. The apparatus will detect a stop condition on the last clock phase of a clock sequence and instead of changing to the state associated with the first clock phase of the next clock sequence, it will instead change state to one or more additional "dead time" states which will allow other logic circuitry to discontinue gating of the clock phases before the apparatus returns to the state associated with the first phase of the next clock sequence. The apparatus will then remain at the state associated with the first phase of the next clock sequence until the clock is restarted and the process is repeated.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: September 5, 1978
    Assignee: Sperry Rand Corporation
    Inventor: Steve Douglas Thatcher