Patents Represented by Attorney Bernard Fronzblau

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  • Circuit arrangement with electronically controllable transfer characteristic
    Patent number: 4439739
    Abstract: A low-noise bass-control device, which is digitally controllable in a simple manner, comprises an amplifier having an output connected to the series arrangement of a capacitor and a tapped resistor chain. The taps on said resistor chain are connected to an inverting input of the amplifier via a first switch and to the output of the control device via a second switch.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: March 27, 1984
    Assignee: U.S. Philips Corporation
    Inventors: Ernst A. Kilian, Wilhelm Graffenberger, Eise C. Dijkmans, Rudy J. van de Plassche