Abstract:
A photodetector arrangement having adjustable output, comprises a photodetector (1) having an array of pixels wherein each pixel (10, 12, 14, 16). The pixels are arranged to convert electromagnetic radiation into an analog detection data signal, respectively. A readout circuit (2) is coupled to the photodetector (1) and comprises a receiving component (22) and a combining component (21). The receiving component (22) is arranged to read out detection data signals, to select at least one detection data signal depending on a control signal and to adjust gain and polarity of the selected detection data signal. The combining component (21) is arranged to combine the detection data signals into one or more output signals to be provided at one or more output terminals (211, 212, 213, 214, 215). A control unit (4) is coupled to the readout circuit (2) via a control terminal (216) and is arranged to provide the control signal at the readout circuit (2) depending on a set of instructions.
Abstract:
An image display device comprises a display panel, a casing to hold the display panel, a moving bar provided at the casing and configured to be movable in a first direction while overlapping the display panel, a calibration sensor at the moving bar to be movable in a second direction perpendicular to the first direction and to obtain calibration information related to the display panel, and a controller to control the display panel based on the obtained calibration information.
Abstract:
The present invention relates to a method for calibrating the colour of a colour monitor with LED backlighting, in which at least one area of an image displayed on the colour monitor (1) is remotely measured in a spatially resolved manner using a colour sensor (7) in the form of an image or line sensor, deviations of measured colour values from desired colour values are determined in a spatially resolved manner, and LED backlighting of the colour monitor (1) is controlled in order to locally correct the deviations. When the colour sensor (7) is integrated into the remote control (2) of a colour TV, the user only suitably orients the remote control (2) with respect to the TV, as a result of which the colour sensor (7) records a test image (3) of the colour TV and evaluates said image in order to determine colour corrections. The method makes it possible to easily calibrate the colour of a colour TV ex works or directly with the user.
Abstract:
It relates to a method for measuring at least one of light intensity and colour in at least one modulated image, the method comprising the steps of: a) detecting a modulation pattern of the modulated image(s); and b) synchronizing a measurement of the intensity and/or colour with the detected modulation pattern. It also relates to a corresponding device.
Abstract:
Ein Verfahren zum Kalibrieren eines Monitors (12, 14), weist folgende Schritte auf: - Positionieren eines Sensors (26) zum Messen einer Lichtgröße (I) auf dem Bildschirm, welcher Sensor (26) eine Montagevorrichtung (30) aufweist, die zum lösbaren Fixieren des Sensors an einem Monitor (12, 14) dergestalt ausgebildet ist, dass mittels des Sensors (26) im fixierten Zustand die Lichtgröße (I) eines Bildschirms (36) des Monitors (12, 14) messbar ist, - Anzeigen von Bildern auf dem Bildschirm (36), so dass aus einer mit einem Sensor (26) gemessenen Lichtgröße die Position (P1) des Sensors (26) auf dem Bildschirm (36) ermittelbar ist, - Erfassen eines Signals des Sensors (26) in Abhängigkeit von der Zeit, - Ermitteln einer Position (P1) des Sensors (26) auf dem Bildschirm (36) aus dem Signal und - Ermitteln zumindest einer Lichtgröße (I) des Bildschirms (36) an der Position (P1).
Abstract:
Eine Vorrichtung zur Halterung eines mobilen Farbmessgeräts an einem Messobjekt, insbesondere einem Monitor, umfasst einen flexiblen schlauchförmigen Traggurt (G), der wenigstens teilweise mit einem körnigen Beschwerungsmaterial befüllt und mit einem Befestigungsorgan (1) zur Anbringung am Farbmessgerät (MD) ausgestattet ist. Die Haltevorrichtung umfasst ferner eine mit Mess- und Bedienungsöffnungen ausgestattete Tasche (T) zur Aufnahme des mobilen Farbmessgeräts (MD), wobei der Traggurt (G) an der Tasche (T) befestigt ist. Der Traggurt (G) ist im Wesentlichen als geschlossene Schlaufe ausgebildet und ist mit einem Klettverschluss zur Längenverstellung ausgestattet. Die Haltevorrichtung erlaubt die einfache und bequeme Positionierung des Messgeräts am Monitor und dient gleichzeitig auch noch als Tragriemen.
Abstract:
A system and method for identifying primary color chromaticity coordinates of a red, green and blue light sources includes a tristimulus filter the receives the combined light generated by the light sources. The light sources are preferably a group of red, green and blue light emitting diodes. A processor is configured to generate a plurality of test control signals that sets a desired intensity value for each of the red, green and blue LEDs. Based on these test control signals, the system is configured to measure three sets of chromaticity coordinates corresponding to the combined light generated by these red, green and blue LEDs. The processor thereafter calculates the color chromaticity coordinates of the LEDs, based on the measured coordinates of the combined light, and the intensity values of the LEDs, and the intensity values of the combined light. This calculation in accordance with one embodiment of the invention is accomplished by solving a matrix equation. Once the color coordinates of the individual light sources is uniquely calculated, the system measures the intensity values of light for each of the light sources that is necessary to provide a combined light with a desired color chromaticity coordinates. These intensity values can be used in a feedback control circuit to maintain the desired combined light as the LEDs change their characteristics from batch to batch or over time.