HIGH SPEED ROLLING IMAGE SENSOR WITH ADM ARCHITECTURE AND METHOD OF IMPLEMENTING THEREOF

    公开(公告)号:US20170180663A1

    公开(公告)日:2017-06-22

    申请号:US14979058

    申请日:2015-12-22

    IPC分类号: H04N5/378 H04N5/353 H04N5/374

    摘要: High speed rolling image sensor includes pixel array disposed in first semiconductor die, readout circuits disposed in second semiconductor die and conductors. Pixel array is partitioned into pixel sub-arrays (PSAs). Each of the PSAs includes a plurality of pixels. Pixel groups include pixels that are non-contiguous, non-overlapping and distinct. Each pixel group includes pixels from different PSAs. Each pixel group is coupled to a corresponding analog-to-digital converter and memory unit tiles (ADMs) respectively included in readout circuits. ADMs respectively include (i) analog-to-digital (ADC) circuits that convert the image data from pixel groups from analog to digital to obtain ADC outputs, and (ii) memory units to store ADC outputs. Conductors are coupling pixel array to ADMs. Conductors include number of conductors per column of pixel array. Number of conductors per column of pixel array may be equal to number of pixels in PSA arranged in same column. Other embodiments are described.

    Digital unit cell with bidirectional ripple counter

    公开(公告)号:US09674471B1

    公开(公告)日:2017-06-06

    申请号:US15079631

    申请日:2016-03-24

    申请人: RAYTHEON COMPANY

    摘要: Aspects and embodiments are directed to a digital unit cell comprising an integrator circuit, a dynamic comparator configured to compare an integration voltage of the integrator circuit with a reference voltage, provide a first pulse signal each time the integration voltage is less than the reference voltage, and provide a second pulse signal each time the integration voltage exceeds the reference voltage, a multiplexer configured to receive a count direction control signal, and a counter element configured to increment a count value each time the first pulse signal or the second pulse signal is received, wherein the multiplexer is configured to couple a first output of the dynamic comparator to the counter element when the count direction control signal is in a first state, and to couple a second output of the dynamic comparator to the counter element when the count direction control signal is in a second state.

    Imaging apparatus and imaging system

    公开(公告)号:US09648262B2

    公开(公告)日:2017-05-09

    申请号:US15349797

    申请日:2016-11-11

    摘要: Because a conventionally known imaging apparatus includes a buffer element for each signal processing circuit, the number of buffer elements increases in proportion to the number of signal processing circuits. The delayed supply of a drive signal within a group of a plurality of signal processing circuits may require the operation timing margin to be set longer. In other words, the operational speed is hard to increase. First buffer circuits connected in series and second buffer circuits connected in parallel with the first buffer circuits are provided, and one second buffer circuit supplies a drive signal to a plurality of signal processing units.

    Current to frequency converter
    70.
    发明授权

    公开(公告)号:US09647655B2

    公开(公告)日:2017-05-09

    申请号:US14670628

    申请日:2015-03-27

    申请人: RAYTHEON COMPANY

    IPC分类号: H03K7/06 H04N5/3745 H04N5/357

    摘要: According to one aspect, embodiments herein provide a current to frequency converter comprising a node configured to be coupled to a photodetector and to receive a photo-current from the photodetector, a capacitor having a first terminal and a second terminal and configured to accumulate electrical charge derived from the photo-current on the first terminal and the second terminal, a switch network configured to selectively couple one of the first terminal and the second terminal to the node, and a Master-Slave (MS) Flip Flop (FF) coupled to the switch network and configured to operate the switch network to toggle which of the first terminal and the second terminal is coupled to the node based on a voltage at the node.