公开(公告)号：US06191408B1

公开(公告)日：2001-02-20

申请号：US09293468

申请日：1999-04-13

申请人： Sukeyuki Shinotsuka ,  Katsuhiko Takebe ,  Toshiaki Tanaka ,  Toshio Imai

发明人： Sukeyuki Shinotsuka ,  Katsuhiko Takebe ,  Toshiaki Tanaka ,  Toshio Imai

IPC分类号： H01L3114

CPC分类号： H04N5/35518

摘要： A photosensor signal processing apparatus is used in combination with an image sensor comprised of a matrix of pixels or photosensors capable of producing an output as a linear function and a logarithmic function of incident illumination. The apparatus includes a correction data storage device which stores therein a set of data about the respective photosensors for the correction of individual outputs of the photosensors, and a correcting device for correcting the respective output values of the photosensors on the basis of the correction data. Thus, even when the individual outputs of the photosensors generate have different characteristics, the output characteristic variation between the photosensors are corrected such that the output characteristics of all the photosensors agree with a reference output characteristic. A fixed pattern noise resulting from the pixel-to-pixel output characteristic variation can be suppressed.

摘要翻译： 光传感器信号处理装置与由能够产生作为线性函数的输出和入射照明的对数函数的像素矩阵或光电传感器组成的图像传感器组合使用。 该装置包括校正数据存储装置，其中存储有关用于校正光电传感器的各个输出的相应光电传感器的一组数据;以及校正装置，用于根据校正数据校正光电传感器的相应输出值。 因此，即使产生光电传感器的各个输出具有不同的特性，校正光电传感器之间的输出特性变化，使得所有光电传感器的输出特性与参考输出特性一致。 可以抑制由像素到像素输出特性变化产生的固定图案噪声。

公开(公告)号：US06396048B1

公开(公告)日：2002-05-28

申请号：US09462443

申请日：2000-04-25

申请人： Michael Schanz ,  Bedrich Hosticka ,  Christian Nitta

发明人： Michael Schanz ,  Bedrich Hosticka ,  Christian Nitta

IPC分类号： H01L3114

CPC分类号： H04N5/243 ,  H04N5/20

摘要： An optical detector has at least one image sensor element that generates an image sensor element output signal according to the illumination incident on the element. A readout amplifier for the one or each image sensor element is switchable between a plurality of amplification stages for amplifying the respective image sensor element output signal. An amplification switch is provided for comparing the image sensor element output signal with at least one given threshold value before the signal is amplified by the readout amplifier and for switching between the amplification stages of the readout amplifier depending on the result of the comparison. The optical detector has a first output signal indicating the amplified image sensor element output signal and a second output signal indicating the amplification stage to which the amplifier is switched.

摘要翻译： 光学检测器具有至少一个图像传感器元件，其根据入射在元件上的照明产生图像传感器元件输出信号。 用于一个或每个图像传感器元件的读出放大器可在多个用于放大各个图像传感器元件输出信号的放大级之间切换。 提供放大开关，用于在信号被读出放大器放大之前将图像传感器元件输出信号与至少一个给定阈值进行比较，并根据比较结果在读出放大器的放大级之间进行切换。 光检测器具有指示放大的图像传感器元件输出信号的第一输出信号和指示放大器切换到的放大级的第二输出信号。