Patents by Inventor Daniel Jose Francois Lommer

Daniel Jose Francois Lommer 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).

  • Frequency demodulator for a FSK data transmission system
    Patent number: 3980961
    Abstract: Frequency demodulator for a frequency-shift-keying data transmission system, which demodulator comprises, in cascade, a monostable circuit, a lowpass filter and a voltage comparator to which a threshold voltage is applied. The demodulator further comprises a switch which is operated by the monostable circuit and supplies to the lowpass filter either one or the other of two voltages derived from the same supply source and having different polarities. The threshold voltage is fixed at zero and in order to correct the bias distortion one of the said two voltages is adjusted.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: September 14, 1976
    Assignee: Telecommunications Radioelectriques et Telephoniques T.R.T.
    Inventors: Loic Bernard Yves Guidoux, Daniel Jose Francois Lommer