Patents by Inventor Nan-Lei Wang

Nan-Lei Wang 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: 5304864
    Abstract: An electronic circuit is provided for comparing a plurality of input signals and indicating and/or selecting the maximum or minimum signal from the input set. The plurality of input signals are amplified, logarithmically compressed, and buffered by a corresponding plurality of simple transistor circuits, which are substantially identical. The buffered input signals are provided to a high resolution multiple input comparator circuit. The comparator circuit comprises a two-stage emitter-coupled comparator and a single stage inverter-amplifier. In the first comparator stage, strong input signals share the bias current but all the weak signals drop out. The inverter-amplifier stage amplifies the differences between the strong signals that survive the first comparison stage. The second stage comparator determines the strongest of the few remaining signals.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: April 19, 1994
    Assignee: Rockwell International Corporation
    Inventors: John H. Hong, Nan-Lei Wang