Patents by Inventor Francis K. Allen

Francis K. Allen 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: 4218758
    Abstract: Parallel binary data from a data source are processed for serialization by circuitry including parallel data registers, a clock ring that provides four phases, and a two phase counter which is operated so that the two phases are in quadrature to each other, and each of its two phases changes count value only once for each complete cycle of the four phase clock ring. The counter has two sets of output signals which are used to select pairs of parallel bits in one of two data registers. The selected bits from the data registers are sampled in serial time by a phase clock pulse from the clock ring, interleaved and processed to form a stream of serialized data bits.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: August 19, 1980
    Assignee: International Business Machines Corporation
    Inventors: Francis K. Allen, Victor H. Chin