Heidelberger Druckmaschinen Ag

Pmdtechnologies Gmbh

Pmdtechnologies Ag

Gretag-macbeth Ag

Robert Lange

Peter Ehbets

Frank Schumann

Wolfgang Geissler

Frank Muth

Christopher Riegel

Loris De Vries

Manfred Schneider

Werner Huber

Peter Elter

Martin Albrecht

Torsten Gollewski

Thorsten Ringbeck

Holger Heβ

Bernd Buxbaum

Holger Heß

The present invention relates to an apparatus for determining an intensity and/or a phase of intensity modulation of an intensity-modulated electromagnetic radiation signal, having a detector and imaging optics for imaging an intensity-modulated radiation signal onto the detector. In comparison with this, the present invention addresses the problem of providing an apparatus for reducing scattered light influences on an intensity and/or phase determination of the intensity modulation of an intensity-modulated electromagnetic radiation signal. In order to solve this problem, the invention proposes configuring the apparatus of the type mentioned at the outset in such a manner that said apparatus has at least one scattered light reference pixel, which is arranged outside an imaging section of the imaging optics and is set up in such a manner that said pixel records measured values for an intensity-modulated scattered light signal during operation, and a determination device which is set up in such a manner that said determination device processes measured values from at least one pixel in a pixel matrix of the detector inside the imaging section as a first data input and measured values from at least one scattered light reference pixel as a second data input during operation in such a manner that said determination device determines a corrected intensity of the intensity-modulated radiation signal and/or a corrected relative phase between the intensity modulation of the intensity-modulated radiation signal and a reference signal at least for the pixel inside the imaging section and provides said intensity and/or phase as a data output.

Scattered light reference pixel

A method for operating a time-of-flight camera including a time-of-flight sensor comprising an array of time-of-flight pixels with at least two integration nodes, wherein in a 3D mode the time-of-flight sensor and an illumination means are operated by means of a modulation signal and on the basis of the charges accumulated at the integration nodes distance values are determined, characterized in that in a power saving mode the time-of-flight sensor is operated with a control signal for motion detection, the frequency of which is lower than a lowest frequency of the modulation signal for a distance determination in the 3D mode, wherein an object motion is determined based on a differential value at the integration nodes is provided.

Time-of-flight camera with motion detection

A method and device for detecting the amplitude and/or the phase position of an intensity-modulated signal, including the following: detecting an instant value of the intensity-modulated signal and of a first reference signal with a frequency differing from the intensity-modulated signal; mixing the first reference signal with the intensity-modulated signal to obtain a mixed-signal value; detecting an instant value of a second reference signal with a frequency differing from both the previously detected signals and of a third reference signal of the same frequency but phase-shifted from the second reference signal; mixing the mixed-signal value with the second reference signal to yield a first measurement value; mixing the mixed-signal value with the third reference signal to yield a second measurement signal value; and calculating the amplitude and/or phase position from the two measurement signal values.

Method and device for delay-sensitive measurement of a signal

Spectral, densitometric, or color measured values are detected on sheet printing materials during the printing process in a sheet-fed printing press. The measured values are determined on sheets as they are moving through the printing press and the measured values are used in real-time by a computer to control parameters for controlling the printing process in the sheet-fed printing press.

Inline measurement and closed loop control method in printing machines

A printing press for processing sheet printing materials includes at least one printing unit, a computer and a measuring device for monitoring printing quality during a printing process. The measuring device has a sensing device for measuring by color or spectrally to register the printing material. At least one sheet-guiding element leads the sheet printing material past the sensing device. A measuring device for monitoring printing quality during a printing process in a printing press for processing sheet printing materials, is also provided.

Printing press and device for the inline monitoring of printing quality in sheet-fed offset printing presses

Growing community of inventors

Netphen, Germany

Robert Lange