Abstract: 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.

Abstract: An implementation of a method for pixel binning in a time-of-flight sensor, includes receiving a first readout signal from a first column of a pixel array of the time-of-flight sensor and receiving a second readout signal from a second column of the pixel array. The method further includes combining the first readout signal and the second readout signal to obtain a common analog signal useable to determine a distance based on at least two pixels of the time-of-flight sensor.

Abstract: Time-of-flight (TOF) systems and techniques whereby a first exposure obtains pixel measurements for a first subset of pixels of a pixel array, using a first reference signal. For a second exposure, the first subset of the pixels, e.g., every second line of the pixel array, are set to a “hold” state, so that values obtained from the first measurement are maintained. A second exposure using a second reference signal is performed for a second subset of the pixels. The first and second reference signals may have different phase shifts relative to a signal modulating an optical signal being measured. The result is an array of pixels in which the first and second subsets hold results of the first and second exposures, respectively. These pixel values can then be read out all at once, with certain calculations being performed directly as pixel values are read from the pixel array.

Abstract: 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.

Abstract: 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.

Abstract: An electronic device includes a display device having light-emitting elements for displaying an optical image on a front side of the display device, and at least one illumination element configured to emit light for illuminating a scene in front of the front side of the display device. The display device is arranged between the at least one illumination element and the scene and includes a first display region exhibiting a first transmissivity for the light emitted by the at least one illumination element and a second display region exhibiting a second transmissivity for the light emitted by the at least one illumination element. The first transmissivity is higher than the second transmissivity. At least one optical element arranged between the at least one illumination element and the display device is configured to focus the light emitted by the at least one illumination element through the first display region.

Abstract: 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.

Abstract: An example time-of-flight device may include an emitter component configured to emit a plurality of modulated signals toward an object during a transmission window, wherein the plurality of modulated signals emitted during the transmission window are to be used to determine a single distance measurement associated with the object and the time-of-flight device.

Abstract: A method for characterizing a time-of-flight sensor and/or a cover covering the time-of-flight sensor is provided. The method includes performing at least one coded modulation measurement with the time-of-flight sensor for obtaining measurement data for light reflected from the cover back to the time-of-flight sensor. A measurement range of the time-of-flight sensor is configured to end shortly after the cover for the at least one coded modulation measurement. Further, the method includes determining characterization data based on the measurement data, wherein the characterization data indicate a quantity related to the time-of-flight sensor and/or the cover.

Abstract: A time-of-flight (TOF) sensor includes an array of pixels. Each pixel includes: a differential pixel configured to output a differential voltage signal between first and second nodes, based on an electrical modulation signal applied to different regions of the differential pixel and an incoming correlated light signal; a first readout circuit coupled to the first node; a second readout circuit coupled to the second node; and a compensation circuit coupled to the first and second readout circuits and configured to compensate for offset caused by incoming uncorrelated light. Each readout circuit has a storage device configured to be discharged by photo current during an exposure phase, sensed during a readout phase and recharged during a reset phase. Recharging of each storage device is controlled by a single reset transistor included in each compensation circuit or by one or more global reset transistors located outside the array of pixels.

Abstract: A time-of-flight (TOF) sensor includes an array of pixels. Each pixel includes: a differential pixel configured to output a differential voltage signal between first and second nodes, based on an electrical modulation signal applied to different regions of the differential pixel and an incoming correlated light signal; a first readout circuit coupled to the first node; a second readout circuit coupled to the second node; and a compensation circuit coupled to the first and second readout circuits and configured to compensate for offset caused by incoming uncorrelated light. Each readout circuit has a storage device configured to be discharged by photo current during an exposure phase, sensed during a readout phase and recharged during a reset phase. Recharging of each storage device is controlled by a single reset transistor included in each compensation circuit or by one or more global reset transistors located outside the array of pixels.

Abstract: An example time-of-flight device may include an emitter component configured to emit a plurality of modulated signals toward an object during a transmission window, wherein the plurality of modulated signals emitted during the transmission window are to be used to determine a single distance measurement associated with the object and the time-of-flight device.

Abstract: Time-of-flight (TOF) systems and techniques whereby a first exposure obtains pixel measurements for a first subset of pixels of a pixel array, using a first reference signal. For a second exposure, the first subset of the pixels, e.g., every second line of the pixel array, are set to a “hold” state, so that values obtained from the first measurement are maintained. A second exposure using a second reference signal is performed for a second subset of the pixels. The first and second reference signals may have different phase shifts relative to a signal modulating an optical signal being measured. The result is an array of pixels in which the first and second subsets hold results of the first and second exposures, respectively. These pixel values can then be read out all at once, with certain calculations being performed directly as pixel values are read from the pixel array.

Abstract: An imaging system may comprise a plurality of pixels to selectively operate in a first operating mode or a second operating mode. When operating in the first operating mode, the plurality of pixels is binned during an exposure phase such that an output during a readout phase corresponds to a summed photocurrent that is a sum of a plurality of concurrent photocurrents, each corresponding to one of the plurality of pixels. When operating in the second operating mode, the plurality of pixels is not binned during the exposure phase such that an output during the readout phase corresponds to a set of separate photocurrents, each corresponding to one of a set of the plurality of pixels.

Abstract: An imaging system may include a modulation component to provide a modulation signal. The imaging system may include an illumination component to receive the modulation signal and emit a modulated optical signal based on the modulation signal, and provide an electrical illumination signal. The electrical illumination signal may be an electrical representation of the modulated optical signal emitted by the illumination component. The imaging system may include an electrical mixer to receive the electrical illumination signal and the modulation signal, multiply the electrical illumination signal and the modulation signal in order to form a mixed signal, filter the mixed signal in order to form a filtered mixed signal, and output, based on the filtered mixed signal, a calibration signal associated with calibrating the imaging system.

Abstract: An apparatus, having a transmitted light power/energy monitor configured to monitor transmitted power/energy of light transmitted by a light source, and a controller configured to determine and control a maximum transmit light time based on the transmitted light power/energy and a transmit light power/energy threshold based on time.

Abstract: An imaging system may comprise a plurality of pixels to selectively operate in a first operating mode or a second operating mode. When operating in the first operating mode, the plurality of pixels is binned during an exposure phase such that an output during a readout phase corresponds to a summed photocurrent that is a sum of a plurality of concurrent photocurrents, each corresponding to one of the plurality of pixels. When operating in the second operating mode, the plurality of pixels is not binned during the exposure phase such that an output during the readout phase corresponds to a set of separate photocurrents, each corresponding to one of a set of the plurality of pixels.

Abstract: An imaging system may include a modulation component to provide a modulation signal. The imaging system may include an illumination component to receive the modulation signal and emit a modulated optical signal based on the modulation signal, and provide an electrical illumination signal. The electrical illumination signal may be an electrical representation of the modulated optical signal emitted by the illumination component. The imaging system may include an electrical mixer to receive the electrical illumination signal and the modulation signal, multiply the electrical illumination signal and the modulation signal in order to form a mixed signal, filter the mixed signal in order to form a filtered mixed signal, and output, based on the filtered mixed signal, a calibration signal associated with calibrating the imaging system.

Abstract: Representative implementations of devices and techniques provide adaptable settings for imaging devices and systems. Operating modes may be defined based on whether movement is detected within a predetermined area. One or more parameters of illumination or modulation may be dynamically adjusted based on the present operating mode.

Abstract: An apparatus, having a transmitted light power/energy monitor configured to monitor transmitted power/energy of light transmitted by a light source, and a controller configured to determine and control a maximum transmit light time based on the transmitted light power/energy and a transmit light power/energy threshold based on time.