Patents by Inventor Herve J. F. Marie

Herve J. F. Marie 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).

  • Analog-to-digital converting device with a constant differential non-linearity
    Patent number: 6285308
    Abstract: The present invention relates to a converting device for converting an analog input signal Vin into a digital output signal OUT, whose gain is equal to the ratio between the values of the output and input signals, comprising: a resistor ladder LAD intended to generate reference voltages, and a plurality of amplifiers A, intended to compare the input signal Vin with the reference voltages. According to the invention, the converting device includes adjusting means for making the gain of the amplifiers and the gain of the converting device proportional to each other. The invention enables to ensure that the differential non-linearity of the converting device remains constant and thus that its behavior does not change when its gain varies.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: September 4, 2001
    Assignee: U.S. Philips Corporation
    Inventors: William Thies, Herve J. F. Marie