公开(公告)号：US5712683A

公开(公告)日：1998-01-27

申请号：US619896

申请日：1996-03-06

申请人： Tomomichi Nakai ,  Toshio Nakakuki

发明人： Tomomichi Nakai ,  Toshio Nakakuki

IPC分类号： H04N9/07 ,  H04N9/68 ,  H04N9/64 ,  H04N5/52

CPC分类号： H04N9/68

摘要： A signal level adjusting circuit for performing adjustment of signal levels in which the levels of individual image signals are made uniform so as to provide greater use of a dynamic range on an image sensor without deterioration to resolution.

摘要翻译： 一种信号电平调整电路，用于执行信号电平的调节，其中使各个图像信号的电平均匀，以便在图像传感器上更大程度地使用动态范围，而不会降低分辨率。

公开(公告)号：US20050185071A1

公开(公告)日：2005-08-25

申请号：US11038529

申请日：2005-01-21

申请人： Tatsuya Takahashi ,  Tomomichi Nakai ,  Toshio Nakakuki

发明人： Tatsuya Takahashi ,  Tomomichi Nakai ,  Toshio Nakakuki

IPC分类号： G06T5/00 ,  H04N1/40 ,  H04N1/407 ,  H04N1/409 ,  H04N5/20 ,  H04N5/202 ,  H04N5/21 ,  H04N5/225 ,  H04N5/217

CPC分类号： H04N5/21 ,  H04N5/202

摘要： An image signal processing apparatus solves a problem of an increase in noise component contained in an image signal due to the gamma correction when a signal level is in a region where a slope of conversion characteristic is sharp, which problem has been detected in an image signal processing apparatus including gamma correction processing performed for achieving nonlinear conversion. The image signal is input to each of LPFs 40 and 42 which differ in transmission characteristic, and a selector 44 selects either one of outputs from the LPFs to send the selected output to the gamma correction circuit. The switching by the selector 44 is controlled by the filter control circuit 32. In the filter control circuit 32, a comparator 60 compares a signal level of an object pixel with a threshold value R. In the case where the signal level of the object pixel is in the region where the slope of conversion characteristic is sharp (less than R), the selector 44 is so controlled as to select the output from the LPF 42 which has a lower cutoff frequency and a larger noise component elimination effect as compared with the LPF 40.

摘要翻译： 图像信号处理装置解决了当信号电平处于转换特性的斜率较大的区域中由于伽马校正而在图像信号中包含的噪声分量增加的问题，在图像信号中检测到该问题 包括用于实现非线性转换的伽马校正处理的处理装置。 图像信号被输入到传输特性不同的每个LPF 40和42，并且选择器44选择来自LPF的输出中的任一个将所选择的输出发送到伽马校正电路。 由选择器44进行的切换由滤波器控制电路32控制。 在滤波器控制电路32中，比较器60将目标像素的信号电平与阈值R进行比较。在目标像素的信号电平处于转换特性的斜率较大的区域（小于 R），与LPF 40相比，选择器44被控制为选择具有较低截止频率和较大噪声成分消除效果的LPF 42的输出。

公开(公告)号：US5638536A

公开(公告)日：1997-06-10

申请号：US450725

申请日：1995-05-26

申请人： Tomomichi Nakai ,  Toshio Nakakuki

发明人： Tomomichi Nakai ,  Toshio Nakakuki

IPC分类号： H04N5/20 ,  H04N5/14 ,  H04N5/202 ,  H04N5/232 ,  H04N9/73 ,  G06F13/00

CPC分类号： H04N5/232 ,  H04N5/14 ,  H04N5/202 ,  H04N5/20 ,  H04N9/73

摘要： A plurality of setting data stored in a serial register 11 and externally supplied replacement data are inputted into selectors 12. Either of the setting or replacement data is provided to the respective one of the setting inputs S.sub.1 -S.sub.n in a digital signal processing unit 10. Each of the selectors 12 usually selects the setting data. When a selector 12 is specified by a decoder 13 based on address data, it only selects the replacement data. When the replacement and address data are suitably set, the computation condition of the digital signal processing unit 10 can be partially changed without rewriting of the setting data in the serial register 11.

摘要翻译： 存储在串行寄存器11中的多个设置数据和外部提供的替换数据被输入到选择器12.在数字信号处理单元10中，设置或替换数据中的任一个被提供给设置输入S1-Sn中的相应一个。 每个选择器12通常选择设置数据。 当选择器12由解码器13基于地址数据指定时，它仅选择替换数据。 当适当地设置替换和地址数据时，数字信号处理单元10的计算条件可以在不重写串行寄存器11中的设置数据的情况下被部分地改变。

公开(公告)号：US07843498B2

公开(公告)日：2010-11-30

申请号：US11038383

申请日：2005-01-21

申请人： Tatsuya Takahashi ,  Tomomichi Nakai ,  Toshio Nakakuki

发明人： Tatsuya Takahashi ,  Tomomichi Nakai ,  Toshio Nakakuki

IPC分类号： H04N5/217 ,  H04N5/235 ,  H04N5/208 ,  H04N5/228 ,  H04N1/38

CPC分类号： H04N1/4092

摘要： An image signal is input to two LPFs having different transmission characteristics. A selector chooses one of outputs of the respective LPFs and delivers the chosen output to a gamma correction circuit. The switching of the selector is controlled by a filter control circuit. In the filter control circuit, a comparator compares an exposure time E of a current frame with a threshold value R. The selector is controlled so as to select an output of one of the LPFs that has a lower cutoff frequency and a greater noise component elimination effect than the other LPF does if the exposure time E is longer than or equal to the threshold value R.

摘要翻译： 图像信号被输入到具有不同传输特性的两个LPF。 选择器选择相应LPF的输出之一并将选择的输出传送到伽马校正电路。 选择器的切换由滤波器控制电路控制。 在滤波器控制电路中，比较器将当前帧的曝光时间E与阈值R进行比较。控制选择器以选择具有较低截止频率和较大噪声成分消除的一个LPF的输出 如果曝光时间E大于或等于阈值R，则效果比另一LPF的效果

公开(公告)号：US06768511B1

公开(公告)日：2004-07-27

申请号：US09495419

申请日：2000-01-31

申请人： Tomomichi Nakai ,  Toshio Nakakuki

发明人： Tomomichi Nakai ,  Toshio Nakakuki

IPC分类号： H04N5235

CPC分类号： H04N5/2352

摘要： A solid-state imaging apparatus having a CCD image capturing circuit includes an exposure time control circuit which analyzes the image signal generated by the image capturing circuit and generates a control signal to adjust an image exposure time. A balance control circuit also receives the control signal and updates gain control information used by an image processing circuit that generates color difference data (U/V data) from the image signal.

摘要翻译： 具有CCD图像拍摄电路的固态成像装置包括曝光时间控制电路，其分析由图像捕获电路产生的图像信号并产生控制信号以调整图像曝光时间。 平衡控制电路还接收控制信号并更新由图像信号产生色差数据（U / V数据）的图像处理电路所使用的增益控制信息。

公开(公告)号：US20050185223A1

公开(公告)日：2005-08-25

申请号：US11038383

申请日：2005-01-21

申请人： Tatsuya Takahashi ,  Tomomichi Nakai ,  Toshio Nakakuki

发明人： Tatsuya Takahashi ,  Tomomichi Nakai ,  Toshio Nakakuki

IPC分类号： H04N5/208 ,  H04N1/40 ,  H04N1/409 ,  H04N5/213 ,  H04N5/225 ,  H04N5/232

CPC分类号： H04N1/4092

摘要： An image signal is input to two LPFs having different transmission characteristics. A selector chooses one of outputs of the respective LPFs and delivers the chosen output to a gamma correction circuit. The switching of the selector is controlled by a filter control circuit. In the filter control circuit, a comparator compares an exposure time E of a current frame with a threshold value R. The selector is controlled so as to select an output of one of the LPFs that has a lower cutoff frequency and a greater noise component elimination effect than the other LPF does if the exposure time E is longer than or equal to the threshold value R.

摘要翻译： 图像信号被输入到具有不同传输特性的两个LPF。 选择器选择相应LPF的输出之一并将选择的输出传送到伽马校正电路。 选择器的切换由滤波器控制电路控制。 在滤波器控制电路中，比较器将当前帧的曝光时间E与阈值R进行比较。控制选择器以选择具有较低截止频率和较大噪声成分消除的一个LPF的输出 如果曝光时间E大于或等于阈值R，则效果比另一LPF的效果

公开(公告)号：US06822689B1

公开(公告)日：2004-11-23

申请号：US09512754

申请日：2000-02-25

申请人： Toshio Nakakuki ,  Tomomichi Nakai

发明人： Toshio Nakakuki ,  Tomomichi Nakai

IPC分类号： H04N5235

CPC分类号： H04N5/2353 ,  H04N5/235

摘要： Exposure control for a solid-state imaging apparatus can be completed in a short time. First exposure information D1 and second exposure information D2 are prepared. The first exposure information D1 is for adjustment of an exposure time L for a CCD (1) through extension or reduction in the unit of one horizontal scanning period; the second exposure information D2 is for direct designation of an exposure time L. When the power is switched on, the second exposure information D2 is selected for supply to a timing control circuit (3). After a lapse of a predetermined time, the first exposure information D1 is then selected.

摘要翻译： 固态成像装置的曝光控制可以在短时间内完成。 准备第一曝光信息D1和第二曝光信息D2。 第一曝光信息D1用于通过以一个水平扫描周期为单位通过扩展或缩小来调整CCD（1）的曝光时间L; 第二曝光信息D2用于直接指定曝光时间L.当电源接通时，选择第二曝光信息D2供给定时控制电路（3）。 经过预定时间后，选择第一曝光信息D1。

公开(公告)号：US20070064117A1

公开(公告)日：2007-03-22

申请号：US10534420

申请日：2003-11-10

申请人： Tomomichi Nakai ,  Toshio Nakakuki

发明人： Tomomichi Nakai ,  Toshio Nakakuki

IPC分类号： H04N5/228

CPC分类号： H04N9/045

摘要： A first solid state imaging device (20a) captures a first picture of a subject to generate a first image signal Ya(t). A second solid state imaging device (20b) captures a second picture of the subject to generate a second image signal Yb(t). In synchronization with operation of the first and second solid state imaging devices (20a, 20b), a selection circuit (26) alternately selects one of the first and second image signals Ya(t) and Yb(t) to output a selected image signal. A digital processing circuit (29) includes a first register (33a) that stores first exposure data EDa generated in accordance with the first image signal Ya(t), and includes a second register (33b) that stores second exposure data EDb generated in accordance with the second image signal Yb(t). This enables smooth switching of operation between the solid state imaging devices.

摘要翻译： 第一固态成像装置（20a）捕获被摄体的第一图像以产生第一图像信号Ya（t）。 第二固态成像装置（20b）捕获对象的第二图像以产生第二图像信号Yb（t）。 与第一和第二固态成像装置（20a，20b）的操作同步，选择电路（26）交替地选择第一和第二图像信号Ya（t）和Yb（t）中的一个输出所选择的 图像信号。 数字处理电路（29）包括：第一寄存器（33a），存储根据第一图像信号Ya（t）生成的第一曝光数据EDa，并且包括存储产生的第二曝光数据EDb的第二寄存器（33b） 根据第二图像信号Yb（t）。 这使得能够平滑地切换固态成像装置之间的操作。

公开(公告)号：US06995801B1

公开(公告)日：2006-02-07

申请号：US09499229

申请日：2000-02-07

申请人： Toshio Nakakuki ,  Tomomichi Nakai

发明人： Toshio Nakakuki ,  Tomomichi Nakai

IPC分类号： H04N5/238

CPC分类号： H04N5/2353

摘要： An imaging apparatus having a solid-state image sensor, such as a CCD, accumulates information charges corresponding to an image of an object and generates an image signal using the stored charges. A driver provides clock signals to the sensor which define vertical and horizontal scan periods, so that the information charges are accumulated in a predetermined exposure period, in accordance with a timing signal. A first exposure information generating circuit determines whether a level of the image signal is within an appropriate range and produces first exposure information based on the determination results. A second exposure information generating circuit calculates second exposure information using the image signal. A selector selects the first exposure information when the level of the image signal is outside of the predetermined exposure period and selects the second exposure information when the image signal is within the predetermined exposure period. A timing control circuit receives the selected exposure information from the selector and generates the timing signal.

摘要翻译： 具有诸如CCD的固态图像传感器的成像装置累积与对象的图像相对应的信息电荷，并使用所存储的电荷产生图像信号。 驱动器向传感器提供定义垂直和水平扫描周期的时钟信号，使得信息电荷根据定时信号在预定的曝光时段内累积。 第一曝光信息产生电路确定图像信号的电平是否在适当的范围内，并且基于确定结果产生第一曝光信息。 第二曝光信息生成电路使用图像信号来计算第二曝光信息。 当图像信号的电平超出预定曝光周期时，选择器选择第一曝光信息，并且当图像信号在预定曝光周期内时选择第二曝光信息。 定时控制电路从选择器接收所选择的曝光信息并产生定时信号。

公开(公告)号：US06885401B1

公开(公告)日：2005-04-26

申请号：US09495427

申请日：2000-01-31

申请人： Tomomichi Nakai ,  Toshio Nakakuki

发明人： Tomomichi Nakai ,  Toshio Nakakuki

IPC分类号： H01L27/148 ,  H01L27/00 ,  H04N3/14 ,  H04N5/341 ,  H04N5/353 ,  H04N5/359 ,  H04N5/3725 ,  H04N5/376 ,  H04N5/378 ,  H04N9/04 ,  H04N9/64 ,  H04N5/335

CPC分类号： H04N5/3595 ,  H04N5/3725

摘要： A frame transfer type solid-state imaging apparatus has a matrix of pixels which store information charges corresponding to a received image. The information charges are moved from the pixels to vertical transfer registers, and then to a horizontal transfer register, prior to being stored. A timing control circuit generates a vertical scan timing signal and a horizontal scan timing signal using a divided clock signal. A horizontal drive circuit generates a horizontal transfer clock using the divided clock signal and the horizontal scan timing signal. The horizontal transfer clock is used to move the information charges from the vertical transfer registers to the horizontal transfer register. A vertical drive circuit generates a vertical transfer clock using a reference clock signal and the vertical scan timing signal. The vertical transfer clock is used to move the information charges from the pixels to the vertical transfer registers. The divided clock signal is generated by dividing the reference clock signal by a predetermined ratio, such that the divided clock signal is longer than the reference clock signal. By generating the vertical transfer clock using the reference clock, and not the longer, divided clock, the resulting image does not have an increase in smear components.

摘要翻译： 帧转移型固态成像装置具有存储与接收到的图像相对应的信息电荷的像素矩阵。 在存储之前，将信息费用从像素移动到垂直传送寄存器，然后移动到水平传送寄存器。 定时控制电路使用分频时钟信号产生垂直扫描定时信号和水平扫描定时信号。 水平驱动电路使用分频时钟信号和水平扫描定时信号产生水平传送时钟。 水平传输时钟用于将信息电荷从垂直传输寄存器移动到水平传输寄存器。 垂直驱动电路使用参考时钟信号和垂直扫描定时信号产生垂直传送时钟。 垂直传输时钟用于将信息电荷从像素移动到垂直传输寄存器。 分频时钟信号通过将基准时钟信号除以预定比例而产生，使得分频时钟信号比参考时钟信号长。 通过使用参考时钟产生垂直传输时钟，而不是较长的分频时钟，所得到的图像不会增加拖尾分量。