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    • 2. 发明授权
    • Solid-state imaging device, semiconductor integrated circuit, and signal processing method
    • 固态成像装置,半导体集成电路和信号处理方法
    • US07791524B2
    • 2010-09-07
    • US12388105
    • 2009-02-18
    • Shigetaka KasugaYoshihisa KatoTakahiko MurataTakayoshi Yamada
    • Shigetaka KasugaYoshihisa KatoTakahiko MurataTakayoshi Yamada
    • H03M1/12
    • H04N5/378H04N5/3742
    • A solid-state imaging device includes: pixel circuits arranged in a matrix which perform photoelectric conversion on received light; and an AD conversion unit converting the resultant signal voltage of the photoelectric conversion. The AD conversion unit includes: a reference voltage generation unit generating plural reference voltages which are different from each other within a possible range for a signal voltage; a most significant bit conversion unit that identifies a voltage section including the signal voltage from among the voltage sections each having a corresponding one of the reference voltages as a base point and determines the identified result as the value of the most significant bit of the digital signal; and a least significant bit conversion unit that converts, into the least significant bit of the digital signal, the difference voltage between the signal voltage and the reference voltage as the base point of the identified voltage section.
    • 固态成像装置包括:以接收光进行光电转换的矩阵状的像素电路; 以及转换所得到的光电转换信号电压的AD转换单元。 AD转换单元包括:在信号电压的可能范围内产生彼此不同的多个参考电压的参考电压产生单元; 一个最高有效位转换单元,其识别包括每个具有对应的一个参考电压的电压部分中的信号电压的电压部分作为基点,并将所识别的结果确定为数字信号的最高有效位的值 ; 以及最低有效位转换单元,其将所述信号电压和所述参考电压之间的差电压转换为所述数字信号的最低有效位作为所识别的电压部分的基点。
    • 5. 发明授权
    • Solid-state imaging device comprising a holding circuit and driving method thereof
    • 固态成像装置,包括保持电路及其驱动方法
    • US08817143B2
    • 2014-08-26
    • US13271466
    • 2011-10-12
    • Takahiko MurataTakayoshi YamadaYoshihisa KatoShigetaka Kasuga
    • Takahiko MurataTakayoshi YamadaYoshihisa KatoShigetaka Kasuga
    • H04N3/14H04N5/217
    • H04N5/361H01L27/14643H04N5/3742H04N5/3745
    • A plurality of pixel circuits arranged in rows and columns, and each of which outputs an electric signal according to an amount of received light; a first column signal line provided for each of the columns, and for sequentially transferring the electric signals from said pixel circuits in a corresponding column; and a holding circuit provided for each of the pixel circuits in each column, and which holds the electric signal transferred through the column signal line in the corresponding column are provided. A holding circuit includes a first capacitor which holds a first electric signal of the corresponding pixel circuit in a reset state; and a second capacitor which holds a second electric signal after the corresponding pixel circuit receives light. A difference circuit calculates a difference between two electric signals held by the first capacitor and the second capacitor in a same holding circuit.
    • 多个以行和列排列的像素电路,每个像素电路根据接收的光量输出电信号; 为每个列提供的第一列信号线,并且用于从相应列中的所述像素电路顺序传送电信号; 并且提供为每列中的每个像素电路提供并保持通过相应列中的列信号线传送的电信号的保持电路。 保持电路包括:第一电容器,其将相应像素电路的第一电信号保持在复位状态; 以及在相应的像素电路接收光之后保持第二电信号的第二电容器。 差分电路在相同的保持电路中计算由第一电容器和第二电容器保持的两个电信号之间的差。
    • 6. 发明授权
    • Solid-state imaging device, AD converter, and AD converting method
    • 固态成像装置,AD转换器和AD转换方法
    • US07683817B2
    • 2010-03-23
    • US12104128
    • 2008-04-16
    • Takahiko MurataShigetaka KasugaTakayoshi Yamada
    • Takahiko MurataShigetaka KasugaTakayoshi Yamada
    • H03M1/34
    • H03M1/144H03M1/1225H03M1/146H03M1/362H04N5/335
    • The present invention provides a solid-state imaging device which can output a digital signal at a high speed without using a high-speed clock. The solid-state imaging device includes light receiving elements provided in an array and generating signal voltages based on light intensity of received light and AD converters each of which is provided in each of columns in the array. Each of the AD converters includes: a reference voltage generating unit (10) generating reference voltages; comparators (11a through 11c) comparing in parallel a current signal voltage which is one of signal voltages generated by the light receiving elements in the respective matrix columns with the reference voltages generated by the reference voltage generating unit; a digital signal generating circuit (23) generating a digital signal showing a result of the comparison and outputting the digital signal out of the AD converter.
    • 本发明提供了一种可以在不使用高速时钟的情况下高速输出数字信号的固态成像装置。 固态成像装置包括设置在阵列中的光接收元件,并且基于接收光的光强度产生信号电压,并且每个AD转换器设置在阵列中的每列中。 每个AD转换器包括:产生参考电压的参考电压产生单元(10) 比较器(11a至11c)将作为由各个矩阵列中的光接收元件产生的信号电压之一的电流信号电压与由参考电压产生单元产生的参考电压并联进行比较; 产生表示比较结果的数字信号的数字信号发生电路(23),并将数字信号从AD转换器输出。
    • 9. 发明申请
    • SOLID-STATE IMAGING DEVICE FOR HIGH-SPEED PHOTOGRAPHY
    • 用于高速摄影的固态成像装置
    • US20070109433A1
    • 2007-05-17
    • US11558670
    • 2006-11-10
    • Takayoshi YamadaTakumi YamaguchiTakahiko MurataShigetaka Kasuga
    • Takayoshi YamadaTakumi YamaguchiTakahiko MurataShigetaka Kasuga
    • H04N5/335
    • H04N5/335H04N5/232H04N5/374H04N5/37452
    • A solid-state imaging device for high-speed photography includes an imaging element area in which a plurality of pixel portions having photodetectors for photography are disposed in a matrix form. The solid-state imaging device generates image data by capturing pixel information obtained from the photodetectors for photography. The solid-state imaging device for high-speed photography further includes: a change detection element that detects a change in an amount of incident light, which is disposed in the imaging element area or at a predetermined position surrounding the imaging element area; and a controller that controls starting or stopping of capturing of pixel information obtained from the photodetectors for photography in accordance with a trigger signal based on a detection signal output from the change detection element. Since the photographing can be started in accordance with the generation of a phenomenon, the phenomenon can be recorded with reliability, and an excellent power-saving capability also can be provided.
    • 用于高速摄影的固态成像装置包括其中具有用于摄影的光电检测器的多个像素部分以矩阵形式布置的成像元件区域。 固态成像装置通过捕获从用于摄影的光电检测器获得的像素信息来生成图像数据。 用于高速摄影的固态成像装置还包括:变化检测元件,其检测设置在成像元件区域或围绕成像元件区域的预定位置处的入射光量的变化; 以及控制器,其基于从变化检测元件输出的检测信号,根据触发信号,控制从用于摄影的光电检测器获得的像素信息的拍摄的开始或停止。 由于可以根据现象的产生开始拍摄,因此可以可靠地记录现象,并且还可以提供优异的节电能力。