IMAGE SENSORS AND IMAGE PROCESSING SYSTEMS USING MULTILEVEL SIGNALING TECHNIQUES

    公开(公告)号:US20200077042A1

    公开(公告)日:2020-03-05

    申请号:US16678384

    申请日:2019-11-08

    Abstract: An image sensor includes a pixel array configured to generate a plurality of pixel signals, an analog to digital converter circuit coupled to the pixel array and configured to generate respective digital codes responsive to respective ones of the pixel signals, a plurality of memories, respective ones of which are configured to store respective bits of the digital codes, a signal processing circuit coupled to a plurality of memories and configured to generate analog signals responsive to the stored bits, each of the analog signals corresponding to multiple ones of the stored bits, and a comparator circuit configured to compare the analog signals to respective ones of a plurality of reference signals to generate digital signals corresponding to the multiple ones of the stored bits. Related image processing systems and methods are also described.

    Image sensor and driving method thereof

    公开(公告)号:US11336845B2

    公开(公告)日:2022-05-17

    申请号:US16745508

    申请日:2020-01-17

    Abstract: An image sensor includes a first unit pixel including a first sub-pixel and a second sub-pixel, a second unit pixel including a third sub-pixel and a fourth sub-pixel, a timing controller configured to apply a first effective integration time to the first sub-pixel and the fourth sub-pixel, such that a first sensing signal and a fourth sensing signal are generated from the first sub-pixel and the fourth sub-pixel, respectively, and to apply a second effective integration time shorter than the first effective integration time to the second sub-pixel and the third sub-pixel, such that a second sensing signal and a third sensing signal are generated from the second sub-pixel and the third sub-pixel, respectively, and an analog-to-digital converter configured to perform an averaging operation on the first sensing signal and the fourth sensing signal or on the second sensing signal and the third sensing signal.

    Electronic device and image binning method thereof

    公开(公告)号:US12069385B2

    公开(公告)日:2024-08-20

    申请号:US17342912

    申请日:2021-06-09

    CPC classification number: H04N25/46 H04N23/84 H04N25/772

    Abstract: An electronic device includes a pixel array that outputs a raw image including color pixels and specific pixels, a logic circuit that outputs a first binned image by performing first binning on pixels in a row direction for each unit kernel of the raw image, and a processor that outputs a second binned image by performing second binning on the first binned image. When a unit kernel includes at least one of the specific pixels, a column to which the at least one specific pixel belongs is read out at a readout timing different from a readout timing of a column to which none of the specific pixels belong and undergoes the first binning. The second binning combines a third binned image of the column to which none of the specific pixels belong with a fourth binned image of the column to which the at least one specific pixel belongs.

    Image sensors and image processing systems using multilevel signaling techniques

    公开(公告)号:US11277579B2

    公开(公告)日:2022-03-15

    申请号:US16678384

    申请日:2019-11-08

    Abstract: An image sensor includes a pixel array configured to generate a plurality of pixel signals, an analog to digital converter circuit coupled to the pixel array and configured to generate respective digital codes responsive to respective ones of the pixel signals, a plurality of memories, respective ones of which are configured to store respective bits of the digital codes, a signal processing circuit coupled to a plurality of memories and configured to generate analog signals responsive to the stored bits, each of the analog signals corresponding to multiple ones of the stored bits, and a comparator circuit configured to compare the analog signals to respective ones of a plurality of reference signals to generate digital signals corresponding to the multiple ones of the stored bits. Related image processing systems and methods are also described.

    Analog-to-digital converter, image sensor including the same, and image processing device including the image sensor
    8.
    发明授权
    Analog-to-digital converter, image sensor including the same, and image processing device including the image sensor 有权
    模数转换器,包括其的图像传感器和包括图像传感器的图像处理装置

    公开(公告)号:US09369144B2

    公开(公告)日:2016-06-14

    申请号:US14327047

    申请日:2014-07-09

    CPC classification number: H03M1/12 H03M1/18 H04N5/378

    Abstract: An analog-to-digital converter includes a gain amplification unit configured to receive a pixel signal at a first node and to amplify a gain of the pixel signal, a first capacitor connected between the first node and a second node, an amplifier configured to receive and amplify a signal output from the gain amplification unit and the first capacitor, and a conversion circuit configured to convert an output signal of the amplifier to a digital signal based on a reference signal and output the digital signal as a first output signal.

    Abstract translation: 模数转换器包括:增益放大单元,被配置为在第一节点处接收像素信号并放大像素信号的增益;连接在第一节点和第二节点之间的第一电容器,被配置为接收 并且放大从增益放大单元和第一电容器输出的信号,以及转换电路,被配置为基于参考信号将放大器的输出信号转换为数字信号,并将数字信号作为第一输出信号输出。

    Programmable gain amplifier and devices including the same
    9.
    发明授权
    Programmable gain amplifier and devices including the same 有权
    可编程增益放大器和包括其的器件

    公开(公告)号:US09148600B2

    公开(公告)日:2015-09-29

    申请号:US14295711

    申请日:2014-06-04

    CPC classification number: H04N5/37457 H03G1/0088 H03G3/001 H04N5/378

    Abstract: A programmable gain amplifier includes a sampling circuit, a source follower, a first capacitor and an error amplifier. The sampling circuit is configured to perform correlated double sampling on an input signal using a reference voltage. The first capacitor is connected between the sampling circuit and the source follower. The error amplifier is connected between an input terminal of the source follower and an output terminal of the source follower. The error amplifier is configured to reset a voltage of the output terminal of the source follower to the reference voltage during a source follower reset operation.

    Abstract translation: 可编程增益放大器包括采样电路,源极跟随器,第一电容器和误差放大器。 采样电路被配置为使用参考电压对输入信号执行相关双采样。 第一个电容器连接在采样电路和源极跟随器之间。 误差放大器连接在源极跟随器的输入端子和源极跟随器的输出端子之间。 误差放大器被配置为在源极跟随器复位操作期间将源极跟随器的输出端子的电压复位到参考电压。

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