Patents by Inventor Alexander Laidlaw Richardson

Alexander Laidlaw Richardson 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: 3981440
    Abstract: An apparatus is provided for detecting digital pulses or pulse intervals and any combination thereof. Logic means is provided wherein the complement of the interval to be measured is loaded into a digital counter, and certain states of this counter are decoded to set and reset, respectively, an in-bin flip-flop. Operation is initiated when a digital input is received. If the interval to be measured terminates while the in-bin flip-flop is set, an output is generated indicating that a "hit" has been scored and the parameters of the measurement can be read out. Code words stored in a memory provide the specific parameters of measurement, and particular portions of the code words are employed depending on the desired mode of operation.
    Type: Grant
    Filed: September 25, 1974
    Date of Patent: September 21, 1976
    Assignee: International Telephone and Telegraph Corporation
    Inventor: Alexander Laidlaw Richardson