Infineon Technologies Ag

Armin Josef Schoenlieb

Hannes Plank

Markus Dielacher

Martin Flatscher

Robert Lobnik

Heinrich Guenther Heiss

David Lugitsch

Caterina Nahler

Norbert Druml

Josef Steinbaeck

Timucin Karaca

Sebastian Krell

A display device is provided. The display device includes a plurality of first light-emitting elements configured to emit light for displaying an optical image on a front side of the display device. Additionally, the display device includes at least one second light-emitting element configured to emit infrared light for illuminating a scene in front of the front side of the display device.

Display device and electronic device including the display device

A method for time-of-flight sensing is provided. The method includes for at least one pixel position performing at least one continuous wave measurement to obtain at least one first measurement value for the pixel position. Further, the method includes performing at least one coded modulation measurement to obtain at least one second measurement value for the pixel position. The method additionally includes determining an estimate of a distance value of the pixel position based on the at least one first measurement value and the at least one second measurement value using a mapping function.

Time-of-flight sensing using continuous wave and coded modulation measurements

An electronic device is provided. The electronic device includes a display device configured to display an optical image on a front side of the display device. Further, the electronic device includes at least one sensor configured to measure electromagnetic radiation received from a scene in front of the front side of the display device. The display device includes a first display region using a first display technology and exhibiting a first transmissivity for the electromagnetic radiation. The display device further includes a second display region using a second display technology and exhibiting a second transmissivity for the electromagnetic radiation. The first transmissivity is higher than the second transmissivity. The at least one sensor is arranged on a back side of the display device and faces the first display region.

Electronic device

An imaging system includes an illumination element for emitting light and an imaging sensor having at least one photo-sensitive element that includes a first element with a modifiable first charge level and a second element with a modifiable second charge level. Control circuitry is configured to, during a first phase, control the illumination element to emit light towards a scene and drive the photo-sensitive element such that charge carriers generated in the photo-sensitive element by light received from the scene modify the first charge level. The control circuitry is configured to, during a second phase, control the illumination element to pause emission of the light and drive the photo-sensitive element such that charge carriers generated in the photo-sensitive element by light received modify the second charge level, and to generate a gray-scale image of the scene based on the first and second charge levels.

Method and imaging system for generating a gray-scale image

A method for determining a reflectivity value indicating a reflectivity of an object is provided. The method includes performing a Time-of-Flight (ToF) measurement using a ToF sensor. A correlation function of the ToF measurement increases over distance within a measurement range of the ToF sensor such that an output value of the ToF sensor for the ToF measurement is independent of the distance between the ToF sensor and the object. The method further includes determining the reflectivity value based on the output value of the ToF sensor for the ToF measurement.

Method and apparatus for determining a reflectivity value indicating a reflectivity of an object

Examples relate to a method, an apparatus and a computer program for determining distance information based on Time of Flight (ToF) sensor data. The method includes obtaining the ToF sensor data, determining one or more saturated regions within the ToF sensor data, determining distance information for one or more boundary regions located adjacent to the one or more saturated regions based on the ToF sensor data, and determining distance information for at least a part of the one or more saturated regions based on the distance information of the one or more boundary regions.

Time of flight sensor module, method, apparatus and computer program for determining distance information based on time of flight sensor data

Provided is a method for compensating light reflections from a cover of a time-of-flight camera in an image of a scene that is sensed by the time-of-flight camera. The method includes receiving the image of the scene from the time-of-flight camera. Further, the method includes modifying the image of the scene using a reference image to obtain a compensated image of the scene. Pixels of the reference image indicate reference values exclusively related to light reflections from the cover of the time-of-flight camera. Additionally, the method includes outputting the compensated image.

Methods and apparatuses for compensating light reflections from a cover of a time-of-flight camera

An electronic device is provided. The electronic device includes: a display device including a plurality of light-emitting elements for displaying an optical image on a front side of the display device; an illumination element integrated into the display device and configured to emit light for illuminating a scene in front of the front side of the display device; an optical sensor configured to sense reflections of the light from the scene; an optical transmitter configured to transmit an optical control signal encoded with control information for controlling light emission by the illumination element; and an optical receiver integrated into the display device and configured to receive the optical control signal and generate an electrical control signal based on the optical control signal. The electronic device further includes a driver circuit integrated into the display device and configured to drive the illumination element based on the electrical control signal.

Electronic device and method for an electronic device

A method for compensating stray light caused by an object in a scene that is sensed by a time-of-flight camera is provided. The method includes receiving an image of the scene from the time-of-flight camera. Further, the method includes controlling the time-of-flight camera to capture a reference image of the scene using a code modulated signal for illumination such that a measurement range of the time-of-flight camera is limited to a distance range around the object. The method additionally includes modifying the image of the scene or an image derived therefrom using the reference image to obtain a compensated image of the scene. The method includes outputting the compensated image.

Method and apparatus for compensating stray light caused by an object in a scene that is sensed by a time-of-flight camera

Techniques for simultaneous time-of-flight (ToF) measurement and information signal transmission. An information signal is superimposed on a series of light pulses by emitting the series of light pulses in groups of N regularly-spaced pulses and selectively varying time intervals between successive groups of pulses, such that the resulting varying time intervals between successive groups of emitted pulses are indicative of values of the information signal. Pixels configured to demodulate received light using a pulsed reference signal derived from the modulating signal are controlled to generate pixel signal values, each being indicative of a time-of-flight from the ToF measurement device to an object and back. This controlling comprises varying time intervals between successive groups of reference signal pulses in the same way time intervals between the emitted pulses are varied, so that the superimposition of the information signal has no effect on the ToF measurements.

Simultaneous data transmission and depth image recording with time-of-flight cameras

Distance ambiguities arising from indirect time-of-flight (ToF) measurements are resolved by using additional information from two or more coded-modulation measurements. An indirect ToF measurement is performed for a pixel of an image processor, to obtain a value indicative of an apparent distance to an imaged object or scene. First and second coded-modulation measurements are also performed, using respective combination of modulation code and reference signals, such that correlation peaks corresponding to these measurements overlap and cover respective first and second adjoining ranges of distances to imaged objects. First and second mask values are determined from the correlation values obtained from the coded-modulation measurements and are used to determine whether the value indicating the apparent distance indicates an actual distance within the first range of distances or within the second range of distances.

Resolving distance measurement ambiguities using coded-modulation phase image frames

Examples relate to a method for determining distance information of an object using a Time of Flight (ToF) system and to a ToF system. The method includes emitting modulated light towards the object using a light source. The method includes measuring a reflection of the modulated light using a ToF sensor module. The reflection of the modulated light is generated by successive reflections of the modulated light by the object and by an additional reflective surface. The method includes determining the distance information of the object based on the measured reflection of the modulated light.

Time of flight system and method including successive reflections of modulated light by an object and by an additional reflective surface for determining distance information of the object using a time of flight system

An example method for performing depth measurements with an image sensor comprises, for at least a first pixel, performing one or more continuous-wave phase measurements for the first pixel and performing a coded-modulation measurement for the first pixel. The method further comprises determining a mask value for the first pixel, based on the coded-modulation measurement, and applying the mask value to a distance value calculated from the one or more continuous-wave phase measurements, to obtain a masked distance value for the first pixel that has no ambiguity due to phase wrapping.

Filtering continuous-wave time-of-flight measurements, based on coded modulation images

A method for determining relative motion between a time-of-flight camera and an object in a scene sensed by the time-of-flight camera is provided. The method includes receiving at least two sets of raw images of the scene from the time-of-flight camera, each set including at least one raw image. The raw images are based on correlations of a modulated reference signal and measurement signals of the time-of-flight camera. The measurement signals are based on a modulated light signal emitted by the object. The method includes determining, for each set of raw images, a value indicating a respective phase difference between the modulated light and reference signals based on the respective set of raw images, and determining information about relative motion between the time-of-flight camera and object based on the values indicating the phase differences. The method includes outputting the information about relative motion between the time-of-flight camera and the object.

Method and apparatus for determining relative motion between a time-of-flight camera and an object in a scene sensed by the time-of-flight camera

Examples relate to a method, an apparatus and a computer program for detecting a presence of airborne particles. A reference measurement of an environment of a depth image sensor module is obtained. The reference measurement is based on a measurement of modulated light in a first time interval. The modulated light is reflected by features of the environment of the depth image sensor module. A subsequent measurement of modulated light is obtained in a second time interval. The presence of the airborne particles is detected based on the subsequent measurement of the modulated light, by using the reference measurement performed in the first time interval to disregard all or part of the features of the environment of the depth image sensor module. A signal indicative of one or more properties of the detected airborne particles is generated based on the detected presence of the airborne particles.

Growing community of inventors

Seiersberg-Pirka, Austria

Armin Josef Schoenlieb