公开(公告)号：US07721169B2

公开(公告)日：2010-05-18

申请号：US10367130

申请日：2003-02-14

申请人： Masahiro Yokomichi ,  Satoshi Machida ,  Yoshihiro Shibuya ,  Yukito Kawahara ,  Minoru Ariyama

发明人： Masahiro Yokomichi ,  Satoshi Machida ,  Yoshihiro Shibuya ,  Yukito Kawahara ,  Minoru Ariyama

IPC分类号： G01R31/28 ,  H04N1/46

CPC分类号： H04N5/3742 ,  G11C2029/3202 ,  H04N5/343

摘要： A scanning circuit has path switches connected between a plurality of data flip-flop circuits of the scanning circuit for sequentially reading an output signal in synchronism with a clock. A plurality of control signal lines select the path switches to arbitrarily skip reading of the flip-flop circuits that do not require the scanning circuit and always fix a potential of the skipped data flip-flop circuit. Only the arbitrary data is read, and in the case where unnecessary data exists, reading is skipped, to thereby increase the read rate.

摘要翻译： 扫描电路具有连接在扫描电路的多个数据触发器电路之间的路径开关，用于与时钟同步地顺序读取输出信号。 多个控制信号线选择路径切换以任意地跳过不需要扫描电路的触发电路的读取，并且始终固定跳过的数据触发器电路的电位。 仅读取任意数据，并且在存在不必要的数据的情况下，跳过读取，从而增加读取速率。

公开(公告)号：US06643038B1

公开(公告)日：2003-11-04

申请号：US09482808

申请日：2000-01-13

申请人： Yukito Kawahara ,  Satoshi Machida ,  Masahiro Yokomichi

发明人： Yukito Kawahara ,  Satoshi Machida ,  Masahiro Yokomichi

IPC分类号： H04N146

CPC分类号： H04N1/486

摘要： A low-priced contact type color image sensor formed without the need to provide color filters on a linear image sensor. The color filters are formed on a surface of a document side of a transparent protective glass in direct contact with a document for flattening the light irradiation surface, such that the pitch thereof is equal to that of light receiving elements of a linear image sensor.

摘要翻译： 低成本的接触式彩色图像传感器，不需要在线性图像传感器上提供彩色滤光片。 彩色滤光片形成在与用于使光照射面平坦化的文件直接接触的透明保护玻璃的原稿侧的表面上，使得其间距等于线状图像传感器的光接收元件的间距。

公开(公告)号：US06285047B1

公开(公告)日：2001-09-04

申请号：US08618919

申请日：1996-03-20

申请人： Satoshi Machida ,  Yukito Kawahara ,  Masahiro Yokomichi ,  Yoshikazu Kojima ,  Noritoshi Ando

发明人： Satoshi Machida ,  Yukito Kawahara ,  Masahiro Yokomichi ,  Yoshikazu Kojima ,  Noritoshi Ando

IPC分类号： H01L31062

CPC分类号： H01L27/14632 ,  H01L27/14621 ,  H01L27/14645 ,  H01L27/14687

摘要： A linear image sensor IC comprising a plurality of switching circuits each connected to a plurality of light receiving elements in series; scanning circuits for sequentially switching said switching circuits; and driving circuits for operating said scanning circuits, wherein a LOCOS isolation layer is formed between an edge in the main scanning direction of the linear image sensor IC which is closest to an array of the light receiving elements and a light receiving portion of the light receiving element. The inventive image sensor IC is mounted by devising so that the circuit can be put into a thin and long pattern in the scanning direction, so that the chip having a width thinner than a thickness thereof which had been beyond expectation by the prior art can be realized. The use of this very thin IC allows a compact IC assembling substrate having less fluctuation among ICs to be manufactured at low cost. Even more, it becomes possible to mount ICs readily on a cylindrical substrate which had been also difficult in the past. Thereby, electronic devices such as a compact and low cost multi-chip type image sensor or multi-chip type thermal head can be realized. Accordingly, it becomes possible to bring down the cost thereof, which had been difficult in the past, and to realize a low cost facsimile.

摘要翻译： 一种线性图像传感器IC，包括多个开关电路，每个开关电路串联连接到多个光接收元件; 用于顺序地切换所述开关电路的扫描电路; 以及用于操作所述扫描电路的驱动电路，其中在最接近光接收元件的阵列的线性图像传感器IC的主扫描方向上的边缘和光接收的光接收部分之间形成LOCOS隔离层 元件。 通过设计安装本发明的图像传感器IC，使得电路可以沿扫描方向成为薄且长的图案，使得具有比现有技术超出预期的厚度的芯片的厚度可以是 实现了 使用这种非常薄的IC允许以低成本制造IC之间具有较小波动的紧凑型IC组装衬底。 更进一步地，可以将IC容易地安装在过去也是困难的圆筒形基板上。 因此，可以实现诸如紧凑且低成本的多芯片型图像传感器或多芯片型热敏头之类的电子设备。 因此，可以降低过去困难的成本，实现低成本的传真。

公开(公告)号：US06803957B1

公开(公告)日：2004-10-12

申请号：US09237230

申请日：1999-01-26

申请人： Satoshi Machida ,  Masahiro Yokomichi ,  Yukito Kawahara

发明人： Satoshi Machida ,  Masahiro Yokomichi ,  Yukito Kawahara

IPC分类号： H04N5335

CPC分类号： H04N5/3597 ,  H04N5/3692 ,  H04N5/374

摘要： To eliminate after-image due to residual charges to provide an output form that is easy to obtain effective on-light output. The outputs of photo-diodes 1 are read out as sequential signal outputs on a common signal line 15 through connected amplifiers 3, and two states of before and after resetting the photo-diodes 1 are outputted in order for each light receiving element.

摘要翻译： 为了消除由于残留电荷引起的后期图像，以提供容易获得有效的on-light输出的输出形式。 光电二极管1的输出通过连​​接的放大器3作为公共信号线15上的顺序信号输出读出，并且为了每个光接收元件依次输出复位光电二极管1之前和之后的两个状态。

公开(公告)号：US06545776B1

公开(公告)日：2003-04-08

申请号：US09191888

申请日：1998-11-13

申请人： Satoshi Machida ,  Yukito Kawahara ,  Masahiro Yokomichi

发明人： Satoshi Machida ,  Yukito Kawahara ,  Masahiro Yokomichi

IPC分类号： H04N104

CPC分类号： H04N5/378 ,  H04N5/3597

摘要： According to the present invention, there is provided an image sensor for receiving light reflected from an original copy on which the light has been irradiated and for converting the received light into electrical signals, the image sensor having a simple configuration, no residual image, a small fluctuation in the dark outputs, and a good S/N ratio. In order to achieve such an image sensor, an output terminal of a photodiode is reset to a constant voltage, and an image signal output of the photodiode and the reference voltage output immediately after the photodiode is reset are performed succeedingly, using a clamping circuit.

摘要翻译： 根据本发明，提供了一种图像传感器，用于接收从其中已经照射光的原始副本反射的光并将接收的光转换为电信号，图像传感器具有简单的配置，无残留图像， 暗输出波动小，S / N比好。 为了实现这样的图像传感器，光电二极管的输出端子被复位为恒定电压，并且使用钳位电路，继续执行光电二极管的图像信号输出和紧接着光电二极管复位后的基准电压输出。

公开(公告)号：US06327057B1

公开(公告)日：2001-12-04

申请号：US09082521

申请日：1998-05-21

申请人： Yukito Kawahara ,  Satoshi Machida ,  Masahiro Yokomichi

发明人： Yukito Kawahara ,  Satoshi Machida ,  Masahiro Yokomichi

IPC分类号： H04N104

CPC分类号： H04N5/23241 ,  H04N5/3692

摘要： To reduce current consumption in a contact type linear image sensor of a multi-chip form, a control circuit controls a clock buffer circuit of the device so that the clock buffer is activated only when a picture signal from a corresponding linear image sensor IC is output. The control circuit inputs a control signal, operates the clock buffer, and drives a shift register when a picture signal is to be read out.

摘要翻译： 为了减少多芯片形式的接触式线性图像传感器中的电流消耗，控制电路控制器件的时钟缓冲电路，使得时钟缓冲器仅在来自相应的线性图像传感器IC的图像信号被输出时被激活 。 控制电路输入控制信号，操作时钟缓冲器，并且当读出图像信号时驱动移位寄存器。

公开(公告)号：US06429413B1

公开(公告)日：2002-08-06

申请号：US09421596

申请日：1999-10-20

申请人： Yukito Kawahara ,  Satoshi Machida ,  Masahiro Yokomichi ,  Kenji Yoshida

发明人： Yukito Kawahara ,  Satoshi Machida ,  Masahiro Yokomichi ,  Kenji Yoshida

IPC分类号： H01L2714

CPC分类号： H04N5/2175

摘要： To eliminate a residual image due to residual charge in an image sensor circuit and provide an effective bright-time output, the image sensor is provided with a reset switch connected to a photodiode. After the potential of the photodiode is held through a first amplifier in two holding circuits as an image signal and an initial signal, the initial signal and the image signal are sequentially output through a second amplifier. By resetting the photodiode to a desired potential to produce an initial signal, a residual image can be eliminated.

摘要翻译： 为了消除由于图像传感器电路中的剩余电荷引起的残留图像并提供有效的亮时输出，图像传感器设置有连接到光电二极管的复位开关。 在通过作为图像信号和初始信号的两个保持电路中的第一放大器保持光电二极管的电位之后，通过第二放大器依次输出初始信号和图像信号。 通过将光电二极管复位到期望的电位以产生初始信号，可以消除残留图像。

公开(公告)号：US06303919B1

公开(公告)日：2001-10-16

申请号：US09299467

申请日：1999-04-26

申请人： Masahiro Yokomichi ,  Yukito Kawahara ,  Satoshi Machida ,  Tooru Shimizu

发明人： Masahiro Yokomichi ,  Yukito Kawahara ,  Satoshi Machida ,  Tooru Shimizu

IPC分类号： H01L27148

CPC分类号： H01L27/14609 ,  H01L27/14623

摘要： A light receiving element is provided with a phototransistor and a light receiving MOS diode proximate thereto and having a gate electrode covering a portion of the base region of the phototransistor. The gate electrode permits transmission of a portion of received light. The light receiving MOS diode forms an inversion layer in a substrate adjacent the base of a phototransistor during the time photo charges are stored, and generated photo charges are stored in the inversion region and the base region of the phototransistor. During the storage state, the potential of the inversion region and the base region of the phototransistor is limited, so that the intensity of an electric field applied to an insulating film between the electrode and the semiconductor substrate is 0.7 MV/cm or less. Alternatively, the potential of the electrode in a waiting state is fixed or made floating, so that an electric field is not applied, and recombination at the surface of the semiconductor substrate is made stable.

摘要翻译： 光接收元件设置有光电晶体管和靠近其的光接收MOS二极管，并且具有覆盖光电晶体管的基极区域的一部分的栅电极。 栅电极允许传输一部分接收的光。 光接收MOS二极管在存储光电荷的时间期间在与光电晶体管的基极相邻的基板中形成反转层，并且产生的光电荷存储在光电晶体管的反转区域和基极区域中。 在存储状态期间，光电晶体管的反转区域和基极区域的电位受到限制，使得施加到电极和半导体衬底之间的绝缘膜的电场强度为0.7MV / cm以下。 或者，处于等待状态的电极的电位固定或浮置，使得不施加电场，并使半导体衬底的表面的复合稳定。

公开(公告)号：US06618086B1

公开(公告)日：2003-09-09

申请号：US09065994

申请日：1998-04-24

申请人： Yukito Kawahara ,  Tooru Shimizu ,  Satoshi Machida ,  Masahiro Yokomichi

发明人： Yukito Kawahara ,  Tooru Shimizu ,  Satoshi Machida ,  Masahiro Yokomichi

IPC分类号： H04N314

CPC分类号： H04N5/3597 ,  H01L27/14643 ,  H04N5/3692

摘要： A linear image sensor using phototransistors as light receiving elements has improved after-image characteristics and reduced production costs by providing a light-receiving MOS diode proximate each photosensor, placing the MOS diode in an inversion state during the accumulation of photo-charge so that the accumulated photo-charge is accumulated at a base region of the phototransistors, placing the MOS diode in an accumulating state during a reset operation to return the phototransistors to an initial state after a readout operation has been performed, so that residual charge without reading out is transferred to the base region of the phototransistors and an after-image caused by residual charge is reduced through an emitter of the phototransistors.

摘要翻译： 使用光电晶体管作为光接收元件的线性图像传感器通过在每个光电传感器附近设置光接收MOS二极管，在光电荷累积期间将MOS二极管置于反转状态，从而具有改进的后图像特性并降低了生产成本， 在光电晶体管的基极区积累积累的光电荷，在复位动作期间将MOS二极管置于累积状态，在读出操作后将光电晶体管返回到初始状态，使得没有读出的残留电荷为 转移到光电晶体管的基极区域，并且通过光电晶体管的发射极减少由剩余电荷引起的后图像。

公开(公告)号：US5619345A

公开(公告)日：1997-04-08

申请号：US731741

申请日：1991-07-16

申请人： Satoshi Machida ,  Yukito Kawahara ,  Hiroshi Mukainakano ,  Masahiro Yokomichi

发明人： Satoshi Machida ,  Yukito Kawahara ,  Hiroshi Mukainakano ,  Masahiro Yokomichi

IPC分类号： H04N1/028 ,  H01L27/146 ,  H04N1/193 ,  H04N1/04

CPC分类号： H04N1/1903 ,  H01L27/146 ,  H04N1/193 ,  H04N1/1934

摘要： An image sensor of the contact type is comprised of a plurality of image sensor chips arranged linearly with one another. Each chip has an array of picture elements arranged at a given constant pitch which is set slightly smaller than a standard reading pitch in a main scanning direction, thereby ensuring uniform output performance of the image sensor.

摘要翻译： 接触型的图像传感器由彼此线性排列的多个图像传感器芯片组成。 每个芯片具有以给定的恒定间距排列的像素阵列，其被设置为略小于主扫描方向上的标准读取间距，从而确保图像传感器的均匀的输出性能。