Patents by Inventor Srikumar R. Chandran

Srikumar R. Chandran 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: 5068854
    Abstract: Error detection of digital data transmitted on an optic link is accomplished by creating, before transmission, a check code comprising check bits that correspond to spaced one of the data bits forming the plurality of bits. The check code is then transmitted with the plurality of bits to a receiver, where the plurality of bits are used to create an error code in the same manner as the check code, the error and check codes compare, and an indication of error generated when a miscompare is detected.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: November 26, 1991
    Assignee: Cupertino, California U.S.A.
    Inventors: Srikumar R. Chandran, Franco E. Mau, Steven A. Jan
  • Patent number: 4700346
    Abstract: A digital logic circuit and method for synchronizing the leading edges skewed true-complement signal pair. The circuit is comprised of two similar, interconnected circuit halves, each of which includes three D flip-flop stages. The outputs from the second D flip-flop stages from the two circuit halves are applied to the two inputs of two identical logic gates, such that the signal pair is synchronously transmitted to a pair of output gates through a third D flip-flop stage in each circuit half. The second D flip-flop stages also prevent metastable states from reaching the synchronizer output. Metastable states may result if the input setup time is violated for the first D flip-flop stages. The third D flip-flop stage in each circuit half also eliminates any signal irregularities generated in the logic circuitry from appearing on the synchronizer output lines.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: October 13, 1987
    Assignee: Tandem Computers Incorporated
    Inventors: Srikumar R. Chandran, Mark S. Walker