PHOTOSITE CIRCUIT USING SWITCHED OPERATIONAL PHASES

    公开(公告)号:US20240334078A1

    公开(公告)日:2024-10-03

    申请号:US18699933

    申请日:2021-10-19

    申请人: TriEye Ltd.

    IPC分类号: H04N25/50 H04N25/77 H04N25/78

    CPC分类号: H04N25/50 H04N25/77 H04N25/78

    摘要: Techniques are disclosed to accurately measure the integration or accumulation of charge measured by photosite readout circuitry due to a photodiode generated current, which is generated by a photodiode as a result of impinging light reflected onto the photodiode that forms part of an imaging sensor. The techniques described herein address shortcomings of photosite operation by using a series of sequential switching states that function to maintain the charge accumulated during idle sampling times between active detection windows.

    Systems and methods for compensating for dark current in a photodetecting device

    公开(公告)号:US11665447B2

    公开(公告)日:2023-05-30

    申请号:US17202544

    申请日:2021-03-16

    申请人: TriEye Ltd.

    IPC分类号: H04N25/63 H04N5/33 H04N25/633

    CPC分类号: H04N25/63 H04N5/33 H04N25/633

    摘要: Systems and methods for imaging in the short wave infrared (SWIR), photodetectors with low dark current and associated circuits for reducing dark currents and methods for generating image information based on data of a photodetector array. A SWIR imaging system may include a pulsed illumination source operative to emit radiation pulses in the SWIR band towards a target resulting in reflected radiation from the target; (b) an imaging receiver including a plurality of Ge PDs operative to detect the reflected SWIR radiation and a controller, operative to control activation of the receiver for an integration time during which the accumulated dark current noise does not exceed the time independent readout noise.

    ELECTRONIC INTEGRATION CIRCUIT HAVING OFFSET AND COLLECTED CHARGE REDUCTION CIRCUITRIES AND ASSOCIATED METHODS

    公开(公告)号:US20230396223A1

    公开(公告)日:2023-12-07

    申请号:US18254607

    申请日:2022-06-05

    申请人: TriEye Ltd.

    IPC分类号: H03F3/45

    CPC分类号: H03F3/45475 H03F2200/375

    摘要: An integrator having an offset evaluation circuit and a collected charge reduction circuitry and method for using the integrator. The integrator includes an amplifier, operable to amplify an input signal, an integration capacitor for collecting charge indicative of a level of the input signal and an offset capacitor. The offset evaluation circuit is operable to charge the offset capacitor with charge corresponding to an offset voltage of the amplifier and the collected charge reduction circuitry is operable to collect charge resulting from disconnection of the offset evaluation circuit, thereby reducing an amount of charge and associated noise input to the amplifier.

    Photosite circuit using switched operational phases

    公开(公告)号:US12133004B2

    公开(公告)日:2024-10-29

    申请号:US18699933

    申请日:2021-10-19

    申请人: TriEye Ltd.

    IPC分类号: H04N25/50 H04N25/77 H04N25/78

    CPC分类号: H04N25/50 H04N25/77 H04N25/78

    摘要: Techniques are disclosed to accurately measure the integration or accumulation of charge measured by photosite readout circuitry due to a photodiode generated current, which is generated by a photodiode as a result of impinging light reflected onto the photodiode that forms part of an imaging sensor. The techniques described herein address shortcomings of photosite operation by using a series of sequential switching states that function to maintain the charge accumulated during idle sampling times between active detection windows.

    Electronic integration circuit having offset and collected charge reduction circuitries and associated methods

    公开(公告)号:US11923815B2

    公开(公告)日:2024-03-05

    申请号:US18254607

    申请日:2022-06-05

    申请人: TriEye Ltd.

    IPC分类号: H03F3/45

    CPC分类号: H03F3/45475 H03F2200/375

    摘要: An integrator having an offset evaluation circuit and a collected charge reduction circuitry and method for using the integrator. The integrator includes an amplifier, operable to amplify an input signal, an integration capacitor for collecting charge indicative of a level of the input signal and an offset capacitor. The offset evaluation circuit is operable to charge the offset capacitor with charge corresponding to an offset voltage of the amplifier and the collected charge reduction circuitry is operable to collect charge resulting from disconnection of the offset evaluation circuit, thereby reducing an amount of charge and associated noise input to the amplifier.

    SYSTEMS AND METHODS FOR COMPENSATING FOR DARK CURRENT IN A PHOTODETECTING DEVICE

    公开(公告)号:US20210227156A1

    公开(公告)日:2021-07-22

    申请号:US17202544

    申请日:2021-03-16

    申请人: TriEye Ltd.

    IPC分类号: H04N5/361 H04N5/369 H04N5/33

    摘要: Systems and methods for imaging in the short wave infrared (SWIR), photodetectors with low dark current and associated circuits for reducing dark currents and methods for generating image information based on data of a photodetector array. A SWIR imaging system may include a pulsed illumination source operative to emit radiation pulses in the SWIR band towards a target resulting in reflected radiation from the target; (b) an imaging receiver including a plurality of Ge PDs operative to detect the reflected SWIR radiation and a controller, operative to control activation of the receiver for an integration time during which the accumulated dark current noise does not exceed the time independent readout noise.