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1. 发明授权

US5231503A Image sensor apparatus with noise cancellation circuitry 失效
标题翻译：具有噪声消除电路的图像传感器装置
公开(公告)号：US5231503A
公开(公告)日：1993-07-27
申请号：US735526
申请日：1991-07-26
申请人： Youichi Nagatake , Kouichi Matsumoto , Kazuo Yamamoto , Koichi Kitamura
发明人： Youichi Nagatake , Kouichi Matsumoto , Kazuo Yamamoto , Koichi Kitamura
IPC分类号： H04N5/357 , H04N5/361 , H04N5/365 , H04N5/369
CPC分类号： H04N5/3658 , H04N5/3575 , H04N5/361
摘要： An image sensor apparatus includes a matrix array of optical/electrical conversion elements, switching elements for taking out electric charge stored on the conversion elements, and drive circuits for driving the switching elements thereby to take out image signals from the conversion elements in parallel. A matrix array of noise signal retaining circuits is provided on output sides of the conversion elements for temporarily retaining in parallel, as noise signals, signals produced while the optical/electrical conversion elements are not being driven. Subtracting circuits are provided for subtracting from the parallel image signals in parallel the noise signals retained in the noise signal retaining circuits. A multiplexer converts the parallel output signals from the subtracting circuits into a serial signal in a predetermined sequence. Thus, the image sensor apparatus temporarily retains in parallel the parallel noise signals produced as a result of fluctuations in the characteristics of circuit elements, and cancels out with the subtracting circuits substantially the same noise which is contained in the image signals output from the conversion elements.
摘要翻译：图像传感器装置包括光/电转换元件的矩阵阵列，用于取出存储在转换元件上的电荷的开关元件，以及用于驱动开关元件的驱动电路，从而并行地从转换元件中取出图像信号。噪声信号保持电路的矩阵阵列设置在转换元件的输出侧，用于在光/电转换元件未被驱动时产生的信号作为噪声信号并行暂时保持。提供减法电路用于并行地从并行图像信号中减去保留在噪声信号保持电路中的噪声信号。多路复用器将来自减法电路的并行输出信号以预定的顺序转换为串行信号。因此，图像传感器装置暂时并行地保持由于电路元件的特性的波动而产生的并行噪声信号，并且使用与从转换元件输出的图像信号中包含的基本上相同的噪声的减法电路来抵消。

2. 发明授权

US5335092A Contact type image sensor 失效
标题翻译：接触式图像传感器
公开(公告)号：US5335092A
公开(公告)日：1994-08-02
申请号：US982419
申请日：1992-11-27
申请人： Koichi Kitamura , Hidenori Mimura , Kazuo Yamamoto , Yasumitsu Ohta , Kazuyoshi Sai , Youichi Nagatake
发明人： Koichi Kitamura , Hidenori Mimura , Kazuo Yamamoto , Yasumitsu Ohta , Kazuyoshi Sai , Youichi Nagatake
IPC分类号： H04N3/15 , H04N1/04
CPC分类号： H04N3/1581
摘要： A contact type image sensor including a plurality of photodiodes for converting a light signal into an electric signal according to the intensity of the light and a plurality of blocking diodes, arranged in either a back-to-back or a front-to-front connection with the photodiodes, for functioning as switching elements to have the information stored on the photodiodes read out, and adapted to be driven by a matrix drive system. For a back-to-back connection of the blocking diodes and photodiodes, a control circuit maintains the potential difference between cathodes of the photodiodes at zero volts at all times. Similarly, for a front-to-front connection of the blocking diodes and photodiodes, a control/drive circuit maintains the potential difference between the anodes of the photodiodes at zero volts at all times. Since the potential difference between the cathodes (for the back-to-back connection) or anodes (for the front-to-front connection) of all of the photodiodes is always maintained at zero volts, crosstalk at crossover portions between output lines connected to the photodiodes is reduced.
摘要翻译：一种接触型图像传感器，包括用于根据光的强度将光信号转换为电信号的多个光电二极管和多个阻塞二极管，其布置成背对背或前后连接与光电二极管一起用作开关元件以使存储在光电二极管上的信息被读出，并且适于由矩阵驱动系统驱动。对于阻塞二极管和光电二极管的背对背连接，控制电路始终保持在零伏特的光电二极管的阴极之间的电位差。类似地，对于阻塞二极管和光电二极管的前到前连接，控制/驱动电路始终保持在零伏特的光电二极管的阳极之间的电位差。由于所有光电二极管的阴极（用于背靠背连接）或阳极（用于前后连接）之间的电位差总是保持在零伏特，所以连接到输出线之间的交叉部分处的串扰光电二极管减少。

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