Patents Assigned to Circuits & Systems Inc.
  • Electronic weighing apparatus utilizing surface acoustic waves
    Patent number: 6448513
    Abstract: A weighing apparatus includes a SAW oscillator and a “push oscillator” to force the SAW oscillator into a desired mode of operation. A SAW temperature oscillator and a thermistor are also provided. The frequency of the “push oscillator” is made immune to temperature changes by generating it via a mixer mixing the SAW temperature oscillator with an adjustable fixed frequency oscillator. Long term stability of the SAW temperature oscillator is achieved by periodic calibration with the thermistor.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: September 10, 2002
    Assignee: Circuits & Systems Inc.
    Inventors: Vyacheslav D. Kats, Arnold S. Gordon