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 ...