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公开(公告)号:US20160041264A1
公开(公告)日:2016-02-11
申请号:US14812003
申请日:2015-07-29
Applicant: Infineon Technologies AG
Inventor: Markus Dielacher , Martin Flatscher , Michael Mark , Josef Prainsack
CPC classification number: G01S17/10 , G01S7/4865 , G01S7/4915 , G01S7/497 , G01S17/36 , G01S17/89 , H04N5/33
Abstract: An apparatus includes a detector circuit configured to receive a modulated electromagnetic wave signal from an illumination source and to provide a detection signal having a frequency dependent on a modulation frequency of the modulated electromagnetic wave signal. The apparatus further includes a reference circuit configured to generate a reference signal based on the detection signal. The apparatus further includes a sensor circuit configured to generate based on the reference signal a sensor signal based on reflected modulated electromagnetic waves emitted by the illumination source and reflected by an object. The apparatus further includes a processing circuit configured to determine distance information related to the object based on the sensor signal.
Abstract translation: 一种装置包括:检测器电路,被配置为从照明源接收经调制的电磁波信号,并提供具有取决于调制的电磁波信号的调制频率的频率的检测信号。 该装置还包括被配置为基于检测信号产生参考信号的参考电路。 该装置还包括传感器电路,其被配置为基于参考信号生成基于由照明源发射并被物体反射的反射调制电磁波的传感器信号。 该装置还包括处理电路,其被配置为基于传感器信号来确定与对象相关的距离信息。
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公开(公告)号:US20140312233A1
公开(公告)日:2014-10-23
申请号:US13866461
申请日:2013-04-19
Applicant: INFINEON TECHNOLOGIES AG
Inventor: Michael Mark , Markus Dielacher , Martin Flatscher , Josef Prainsack
CPC classification number: H05B33/0845 , G01J1/46 , G01J5/10 , H05B33/0842
Abstract: Some aspects of the present disclosure provide system and method of operation of a driving circuit for a light emitting element in a Time-of-Flight (ToF) camera. A DC-DC converter is configured to emit a constant current, and is coupled in parallel to a first modulation switch configured to connect the driving circuit to ground. The first modulation switch is further configured to alternate connections between the current source and ground at a frequency in a desired range of operation to produce an AC current. In some embodiments, an RC circuit element is coupled to an output electrode of the light emitting element and configured to apply a reverse bias to decrease turn-off time of the light emitting element. In some embodiments, a second modulation switch is coupled to the output electrode and configured to apply the reverse bias across the light emitting element. Other systems and methods are also disclosed.
Abstract translation: 本公开的一些方面提供了用于飞行时间(ToF)照相机中的发光元件的驱动电路的操作系统和方法。 DC-DC转换器被配置为发射恒定电流,并且并联耦合到被配置为将驱动电路连接到地的第一调制开关。 第一调制开关还被配置为以期望的操作范围内的频率在电流源和地之间交替连接以产生AC电流。 在一些实施例中,RC电路元件耦合到发光元件的输出电极并被配置为施加反向偏压以减少发光元件的关断时间。 在一些实施例中,第二调制开关耦合到输出电极并且被配置为跨越发光元件施加反向偏置。 还公开了其它系统和方法。
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公开(公告)号:US11506763B2
公开(公告)日:2022-11-22
申请号:US16176817
申请日:2018-10-31
Applicant: Infineon Technologies AG
Inventor: Markus Dielacher , Martin Flatscher , Robert Lobnik , Hartwig Unterassinger
IPC: G01S7/4865 , G01S7/4863 , G01S17/10
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.
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公开(公告)号:US20220149016A1
公开(公告)日:2022-05-12
申请号:US17524023
申请日:2021-11-11
Applicant: Infineon Technologies AG
Inventor: Hannes Plank , Markus Dielacher , Martin Flatscher , Heinrich Guenther Heiss , Robert Lobnik , Armin Josef Schoenlieb
IPC: H01L25/075 , G01S17/08 , G01S7/481 , H01S5/42
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.
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公开(公告)号:US11275176B2
公开(公告)日:2022-03-15
申请号:US16182286
申请日:2018-11-06
Applicant: Infineon Technologies AG
Inventor: Markus Dielacher , Martin Flatscher , Stefan Gansinger , Robert Lobnik
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. The time-of-flight device may include a control component configured to cause, via the emitter component, emission of a first modulated signal and emission of a second modulated signal, of the plurality of modulated signals, toward the object, wherein the first modulated signal is emitted during a first portion of the transmission window and has a first phase of a plurality of preconfigured phases, and wherein the second modulated signal is emitted during a second portion of the transmission window and has a second phase of the plurality of preconfigured phases; and cause, using the emission of the first modulated signal and the emission of the second modulated signal during the transmission window, an emulation of a transmission of a measurement signal that has a measurement phase defined based on the first phase and the second phase, wherein the measurement phase is different from the first phase and the second phase.
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公开(公告)号:US20210382153A1
公开(公告)日:2021-12-09
申请号:US17339472
申请日:2021-06-04
Applicant: Infineon Technologies AG
Inventor: Markus Dielacher , Martin Flatscher , Hannes Plank , Armin Josef Schoenlieb
IPC: G01S7/497 , G01S17/894 , G01S7/4865 , G01S17/26 , G01S7/481
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.
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公开(公告)号:US10575384B2
公开(公告)日:2020-02-25
申请号:US15790520
申请日:2017-10-23
Applicant: Infineon Technologies AG
Inventor: Markus Dielacher , Martin Flatscher , Thomas Gigl , Robert Lobnik , Michael Stadler
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.
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公开(公告)号:US20190124748A1
公开(公告)日:2019-04-25
申请号:US15790520
申请日:2017-10-23
Applicant: Infineon Technologies AG
Inventor: Markus Dielacher , Martin Flatscher , Thomas Gigl , Robert Lobnik , Michael Stadler
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.
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公开(公告)号:US10142572B2
公开(公告)日:2018-11-27
申请号:US15196615
申请日:2016-06-29
Applicant: Infineon Technologies AG
Inventor: Markus Dielacher , Martin Flatscher , Stefan Gansinger , Michael Mark , Josef Prainsack , Hartwig Unterassinger
Abstract: The present disclosure relates to an imaging apparatus. The imaging apparatus comprises a pixel array. The pixel array comprises a first pixel comprising a first radiation-sensitive region and at least one associated charge storage region for collecting electrical charges from the first radiation-sensitive region. The pixel array also comprises a second pixel comprising a second radiation-sensitive region and at least one associated charge storage region for collecting electrical charges from the second radiation-sensitive region. Furthermore, the imaging apparatus comprises control circuitry configured to generate a common compensation signal being common to the first and second pixels. The common compensation signal mitigates a saturation of the respective charge storage regions of the first and second pixels.
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公开(公告)号:US10101453B2
公开(公告)日:2018-10-16
申请号:US14812003
申请日:2015-07-29
Applicant: Infineon Technologies AG
Inventor: Markus Dielacher , Martin Flatscher , Michael Mark , Josef Prainsack
Abstract: An apparatus includes a detector circuit configured to receive a modulated electromagnetic wave signal from an illumination source and to provide a detection signal having a frequency dependent on a modulation frequency of the modulated electromagnetic wave signal. The apparatus further includes a reference circuit configured to generate a reference signal based on the detection signal. The apparatus further includes a sensor circuit configured to generate based on the reference signal a sensor signal based on reflected modulated electromagnetic waves emitted by the illumination source and reflected by an object. The apparatus further includes a processing circuit configured to determine distance information related to the object based on the sensor signal.
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