1
Andreas Menkhoff, Herbert Alrutz: Filter combination for sampling rate conversion. Micronas Intermetall, Arthur L Buchanan Ingersoll PC Plevy, October 24, 2000: US06137349 (35 worldwide citation)

A filter combination for sampling rate conversion is disclosed comprising a series combination of: an input low-pass filter (1) whose attenuation characteristic (tp1) has at least one first attenuation value (a1) in the vicinity of one-half and 1.5 times the frequency of a digitization clock (f1); a ...


2
Andreas Menkhoff, Franz Otto Witte: Method for encryption or decryption using finite group operations. Micronas Intermetall, Duane Morris, November 6, 2001: US06314187 (34 worldwide citation)

The invention relates to a method for encrypting or decrypting a sequence of successive data words in a data communications device, the method comprising executing an algorithm in which a sequence of quasi-random encryption words is generated from predetermined start values by performing operations ...


3
Andreas Menkhoff, Ulrich Theus: Clock generator for generating a system clock causing minimal electromagnetic interference. Deutsche ITT, Plevy & Associates, December 16, 1997: US05699005 (26 worldwide citation)

A clock generator circuit for clock controlled electronic devices, which causes minimal electromagnetic interference in adjacent electronic equipment. The clock generator circuit includes a clock source for generating a basic clock signal having a predetermined frequency. The basic clock signal defi ...


4
Andreas Menkhoff: Equalizer for digitized signals. Deutsche ITT, Plevy & Associates, February 3, 1998: US05714918 (19 worldwide citation)

In an equalizer with n number of frequency ranges for digitized signals in which by means of n-1 cascaded filter circuits containing parallel connected digital low-pass filters and digital high pass filters whose respective frequency responses are linked by complementary transfer functions. A desire ...


5
Bernhard Engl, Andreas Menkhoff: Analog-to-digital converter circuit. Infineon Technologies, Marshall Gerstein & Borun, September 16, 2003: US06621431 (16 worldwide citation)

An analog-to-digital converter circuit including an analog-to-digital converter and calibrating circuit, preferably in the form of a digital logic, for the auto-calibration of the analog-to-digital converter. This configuration produces a very high quality analog-to-digital converter with a very low ...


6
Andreas Menkhoff: Facility for reducing a data rate. December 19, 2000: US06163787 (10 worldwide citation)

A facility for reducing the data rate of a data sequence (d1) is provided, including a switchable filter device (1) which delivers first output values (dn) after a sampling intervals in a first state and second output values (dm) after a +1 sampling intervals in a second state, and which has at leas ...


7
Andreas Menkhoff, Miodrag Temerinac, Franz Otto Witte, Martin Winterer: Method for digital interpolation. Deutsche ITT, Plevy & Associates, February 10, 1998: US05717618 (10 worldwide citation)

An improved method for digital interpolation of signals for a second interpolation filter is disclosed which permits a high signal/noise ratio with a minimum amount of circuitry for an overall system comprising first and second interpolation filters. The method for digital interpolation of signals r ...


8
Andreas Menkhoff: Clock generator for generating a system clock causing little electromagnetic interference. Micronas Semiconductor Holding, Arthur L Plevy, July 27, 1999: US05929683 (9 worldwide citation)

A clock generator serves to generate a stable frequency system clock for a clock-controlled electronic device. To ensure that the system clock causes only little electromagnetic interference to nearby electronic equipment, the system clock is modulated with respect to a reference clock by means of a ...


9
Stefan Fechtel, Andreas Menkhoff: Weighting circuit for a multi-carrier signal receiver. Infineon Technologies, Jenkins Wilson Taylor & Hunt P A, July 16, 2013: US08488687 (8 worldwide citation)

The invention relates to a weighting circuit for a receiver (1), which is designed to receive a multi-carrier signal consisting of carrier signals. According to the invention, the carrier signals are weighted by the weighting circuit (18) in such a way that the parasitic signal energy has the same i ...


10
Andreas Menkhoff, Klaus Heberle: Iterative interpolator. Deutsche ITT, Plevy & Associates, April 14, 1998: US05740089 (4 worldwide citation)

An iterative interpolator permits linear interpolation between a first known value and second known value, which are defined by n-coordinate values in an n-dimensional coordinate system. An intermediate value to be interpolated is defined by n-1 intermediate values. By an interval nesting process in ...