Patents by Inventor Johannes Wilhelmus Glasbergen

Johannes Wilhelmus Glasbergen 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).

  • Pulse code transmitter and receiver designed to produce uniform transfer characteristics in the face of component variations
    Patent number: 4039950
    Abstract: A pulse code modulation transmission device comprising a transmitter and a receiver each being provided with a dynamic control circuit and a modulator built up of a first controlled current source circuit supplying a supply current for a difference amplifier which is controlled by output pulses from the transmitter and incorporating in its two output circuits pnp current mirror circuits whose outputs are connected to the output of a modulator directly and through a precision polarity reversing circuit, respectively. The control input of the first current source circuit is coupled to the output of the dynamic control circuit as well as to the input of a fourth current source circuit arranged in parallel therewith whose output is connected in the manner of a feedback through a pnp-current mirror circuit to a npn-current mirror circuit whose output is coupled to the output of the dynamic control circuit.
    Type: Grant
    Filed: December 10, 1975
    Date of Patent: August 2, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Johannes Wilhelmus Glasbergen