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1. 发明专利

JP2011199711A Image processing device 审中-公开
标题翻译：图像处理装置
公开(公告)号：JP2011199711A
公开(公告)日：2011-10-06
申请号：JP2010065772
申请日：2010-03-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOMITA TSUTOMU , KIKUCHI MINORU
IPC分类号： H04N9/73 , H04N1/40 , H04N7/18
摘要： PROBLEM TO BE SOLVED: To provide an image processing device which can suitably set an image quality according to the presence or absence of lighting.SOLUTION: An image processing device 20 includes an exposure detection unit 21 for detecting a brightness from an image captured by a camera 10, a brightness variation detection unit 22 for detecting a changed difference in brightness and a time of change in brightness, an image quality setting unit 24 for setting an image quality according to a changed difference in brightness and the time of change in brightness, and an image processing unit 25 for processing the image based on the set image quality. The image quality setting unit 24 sets the image quality to the image quality under the lighting situation when the brightness after change is higher than the brightness before change, an absolute value of the changed difference in brightness is greater than a first threshold value, and the time of change in brightness is smaller than a second threshold value. When the brightness after change is lower than the brightness before change, the absolute value of the changed difference in brightness is greater than a third threshold value, and the time of change in brightness is smaller than a fourth threshold value, the image quality setting unit 24 sets the image quality to the image quality under the no-lighting situation.
摘要翻译：要解决的问题：提供可以根据有无照明来适当地设定图像质量的图像处理装置。解决方案：图像处理装置20包括：曝光检测单元21，用于从由相机10，用于检测亮度变化的差异和亮度变化的亮度变化检测单元22，用于根据改变的亮度差和亮度变化时间来设置图像质量的图像质量设置单元24，以及图像处理单元25，用于基于所设置的图像质量来处理图像。图像质量设置单元24将改变后的亮度高于变化前的亮度，亮度变化的绝对值大于第一阈值时的照明情况下的图像质量设定为图像质量，亮度变化时间小于第二阈值。当变化后的亮度低于变化前的亮度时，亮度变化的差的绝对值大于第三阈值，并且亮度的变化时间小于第四阈值，图像质量设定单元 24在无照明情况下将图像质量设置为图像质量。

2. 发明专利

JP2014165505A Image processing apparatus and image processing method 审中-公开
标题翻译：图像处理装置和图像处理方法
公开(公告)号：JP2014165505A
公开(公告)日：2014-09-08
申请号：JP2013031692
申请日：2013-02-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOMITA TSUTOMU
IPC分类号： H04N9/73 , H04N9/04
摘要： PROBLEM TO BE SOLVED: To cause white balance to converge at once without depending on a convergence algorithm.SOLUTION: A white balance control apparatus 10 according to the present invention carries out, after a rapid change of a color difference signal ratio, white balance control by predicting gains of color signals R and B after convergence of white balance from the color difference signal ratio by means of a convergence point prediction part 13. With this construction, when a subject has changed and a color temperature environment has rapidly changed, the white balance control apparatus 10 is capable of setting a convergence point of the white balance or a state in the vicinity of the convergence point of the white balance at once.
摘要翻译：要解决的问题：使白平衡立即收敛而不依赖于会聚算法。解决方案：根据本发明的白平衡控制装置10在色差信号比快速变化之后执行白平衡控制通过预测利用会聚点预测部13从色差信号比例收集白平衡后的彩色信号R和B的增益。利用这种结构，当被摄体改变并且色温环境迅速变化时，白色平衡控制装置10能够一次设定白平衡的会聚点或白平衡的会聚点附近的状态。

3. 发明专利

JP2008017079A Video camera 审中-公开
标题翻译：录影机
公开(公告)号：JP2008017079A
公开(公告)日：2008-01-24
申请号：JP2006185102
申请日：2006-07-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOMITA TSUTOMU
IPC分类号： H04N5/235
摘要： PROBLEM TO BE SOLVED: To provide a video camera capable of obtaining color image of a higher picture quality with a proper S/N ratio at a lower illuminance.
SOLUTION: The video camera comprises a monochrome imaging means for obtaining a monochrome imaging signal, a monochrome imaging driving means for driving the monochrome imaging means, a monochrome signal processing means for separating and outputting a brightness signal from the imaging signal by the monochrome imaging means, a color imaging means for obtaining a color imaging signal, a color imaging driving means for driving the color imaging means, and a color signal processing means for separating and outputting a color signal from the imaging signal of the color imaging means. In addition, the video camera comprises a brightness determining means for determining brightness based on the imaging signal from the monochrome imaging means and/or the color imaging means. In the video camera, the monochrome imaging driving means and/or the color imaging means driving means is controlled so that a signal accumulation time duration of the monochrome imaging means and/or the color imaging means is varied, according to the determination result of the brightness determining means.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够以较低照度获得具有适当S / N比的更高图像质量的彩色图像的摄像机。解决方案：摄像机包括用于获得单色成像信号的单色成像装置，用于驱动单色成像装置的单色成像驱动装置，用于从成像信号中分离和输出亮度信号的单色信号处理装置，单色成像装置，用于获得彩色成像信号的彩色成像装置，用于驱动彩色成像装置的彩色成像驱动装置，以及用于从彩色成像装置的成像信号分离和输出彩色信号的彩色信号处理装置。此外，摄像机包括用于基于来自单色成像装置和/或彩色成像装置的成像信号确定亮度的亮度确定装置。在摄像机中，单色成像驱动装置和/或彩色成像装置驱动装置被控制，使得单色成像装置和/或彩色成像装置的信号累积持续时间根据亮度确定装置。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2002185823A VIDEO CAMERA 失效
公开(公告)号：JP2002185823A
公开(公告)日：2002-06-28
申请号：JP2000379764
申请日：2000-12-08
申请人： HITACHI LTD
发明人： KOIKE YOSUKE , KAWAMATA MAKI , TOMITA TSUTOMU
IPC分类号： G03B13/36 , G02B7/28 , G03B17/18 , G03B17/20 , H04N5/225 , H04N5/265
摘要： PROBLEM TO BE SOLVED: To solve the problem of the conventional video camera of a user unable to recognize the actual size of an object, because none of the conventional video cameras has had a provision of displaying a scale that is a standard, to recognize the size of the object. SOLUTION: The video camera of this invention consists of a character signal generating section, an automatic focus lens, a CCD sensor, a signal processing section, an adder circuit section that adds a character signal to a video signal, and a microcomputer that controls the character signal generating section. By displaying a scale, in matching with the size of the object on the basis of distance information up to the object, an imaging area by a solid- state imaging element and a focal distance of a lens, the user can recognize the size of the object.

5. 发明专利

JPH03106187A SIGNAL PROCESSING CIRCUIT FOR CCD IMAGE PICKUP ELEMENT 失效
公开(公告)号：JPH03106187A
公开(公告)日：1991-05-02
申请号：JP24200589
申请日：1989-09-20
申请人： HITACHI LTD
发明人： TOMITA TSUTOMU , OZAWA NAOKI
IPC分类号： H04N5/335 , H04N5/341 , H04N5/363 , H04N5/372 , H04N5/378
摘要： PURPOSE:To obtain an image pickup signal without increased noise even when horizontal clamp is implemented by providing a blanking means fixing an output signal whose DC level is fixed with a 1st clamp means for a clamp period of a 2nd clamp means to a prescribed DC level. CONSTITUTION:An output signal from a CCD image pickup element 1 is sent to a picture element clamp circuit 2, in which the signal is fixed to a prescribed DC level with a clamp pulse CP for a period t1 when only reset noise exists. Then an output signal Q1 whose DC level is fixed is sent to a blanking circuit 3, where a blanking pulse BL is superimposed on the signal for the blanking period and the result is clipped at a prescribed DC level thereby reducing the noise for the period forcibly. Then the obtained output signal Q2 is subject to sample-and-hold processing by using a pulse S/H at a sample-and-hold circuit 4. Thus, the rest noise and low frequency noise superimposed on the signal are reduced and the noise for the blanking period is eliminated and the signal is fixed to a prescribed DC level.

6. 发明专利

JPH024091A INTEGRATION TYPE SIGNAL OUTPUTTING DEVICE 失效
公开(公告)号：JPH024091A
公开(公告)日：1990-01-09
申请号：JP15233588
申请日：1988-06-22
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： KUNIMASA YOSHIO , TAKAHASHI KENJI , AKIYAMA TOSHIYUKI , OZAWA NAOKI , MIMURA ITARU , TOMITA TSUTOMU
IPC分类号： H01L27/14 , H01L27/146 , H04N5/217 , H04N5/335 , H04N5/357 , H04N5/369 , H04N5/374 , H04N5/378
摘要： PURPOSE:To obtain the added signal of a signals integrated for different integrating periods, and to achieve noise reduction by adding the signal which was stored and discharged by a storage discharge circuit and a source signal, and integrating this added signal. CONSTITUTION:The voltage signal (a) of s picture element read out of a photodiode 1 is inputted to the storage discharge circuit 24 and an addition circuit 21. The storage period TC of the storage discharge circuit 24 includes a period in which a picture signal (a) can be obtained. An output signal (c) obtained by opening and closing a switch 17a by a control circuit 20a and the source signal (picture element signal) (a) are added by the addition circuit 21, and are inputted to an integration circuit 19. Then, by opening and closing the switch 17b by the control circuit 20b at timing (e), the signal (f) is obtained. At that time, a noise in the output of the integration circuit 19 becomes the sum of the integrated result of the source signal (a) by the integration circuit 19 and the integrated result of the output signal (c) of the storage discharge circuit 24 by the integration circuit 19. Accordingly, the frequency component of the noise is attenuated, and the noise reduction can be achieved.

7. 发明专利

JPH1132329A ENCODING DEVICE AND CAMERA 失效
公开(公告)号：JPH1132329A
公开(公告)日：1999-02-02
申请号：JP18542597
申请日：1997-07-10
申请人： HITACHI LTD , HITACHI VIDEO IND INF SYST INC
发明人： TOMITA TSUTOMU , KURASHIGE TOMOYUKI , KOBAYASHI HIROTAKA , TARUMI HIROYUKI , SHIOKAWA JUNJI
IPC分类号： H04N5/232 , H03M7/38 , H04N7/08 , H04N7/081 , H04N7/24 , H04N19/00 , H04N19/102 , H04N19/117 , H04N19/124 , H04N19/134 , H04N19/15 , H04N19/176 , H04N19/196 , H04N19/423 , H04N19/503 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/85 , H04N19/86
摘要： PROBLEM TO BE SOLVED: To prevent block-shaped distortion, the increase of a mosquito-noise, and the generation of the difference in level of picture quality by changing each kind of picture quality parameter in a picture signal processing means through a picture signal processing controlling means by a code amount controlling means. SOLUTION: A general gamma correction processing and a picture quality adjusting processing such as outline emphasis is operated to a digital picture signal in a picture signal processing circuit 3. A picture encoder 4 operates the encoding and compressing processing of a picture signal, and converts the compressed data into a bit stream, and outputs it. This signal is temporarily stored in a buffer 5, and the information of code amounts (m) is transmitted to a code amount controlling circuit 6. The target value of code amounts to be generated for the picture of one frame is calculated by a code amount controlling circuit 6 for each frame based on a transmission rate, the code amounts (m) of the encoded data stored in the buffer 5 are always monitored, and a quantization coefficient (q) is changed so that the code amounts (m) can approach the target code amounts, and feedbacked to the picture encoder 4. Thus, the feedback control of the code amounts can be attained, and the transmission rate can be controlled.

8. 发明专利

JPH02302183A SIGNAL PROCESSING CIRCUIT FOR CCD IMAGE PICKUP ELEMENT 失效
公开(公告)号：JPH02302183A
公开(公告)日：1990-12-14
申请号：JP12152089
申请日：1989-05-17
申请人： HITACHI LTD
发明人： TOMITA TSUTOMU , OZAWA NAOKI
IPC分类号： H04N5/335 , H04N5/357 , H04N5/363 , H04N5/372 , H04N5/378
摘要： PURPOSE:To reduce the noise for the horizontal blanking period by making the phases of two signal sampling pulses used for subtraction of correlation double sampling coincident with each other for the horizontal blanking period when a DC level is clamped. CONSTITUTION:Sample hold signals obtained respectively are given to a sample- and-hold circuit 2, and the phases are matched by a delay circuit 4 added to the output of the circuit 2 and the resulting signal is fed to a subtraction circuit 7, where the signals are subtracted together to obtain a difference signal. As a result, reset noise and low frequency noise superimposed on the signal are reduced. In this case, the phase of a pulse fed to a sample-and-hold circuit 3 is made equal to the phase of the pulse given to the sample-and-hold circuit 2 at a portion including the clamp period in the horizontal blanking period. Thus, a difference signal of two sample-and-hold signals after subtraction is zero and the noise attended thereto is minimized.

9. 发明专利

JP2000308013A VIDEO SIGNAL OUTPUT FORMAT SETTING METHOD AND VIDEO RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JP2000308013A
公开(公告)日：2000-11-02
申请号：JP11547899
申请日：1999-04-22
申请人： HITACHI LTD
发明人： ISHIZUKA AKINOBU , OONO ATSUHIRO , TOMITA TSUTOMU
IPC分类号： G09G3/36 , G09G3/20 , G09G5/00 , H04N5/44 , H04N5/445 , H04N5/92 , H04N9/80
摘要： PROBLEM TO BE SOLVED: To provide a video recording/reproducing device which can set an appropriate video signal output format and output a video signal by associatively holding the choice of an event which is peculiarly associated with an area and a video signal format and automatically setting the video signal format corresponding to the associated choice as a video signal output format. SOLUTION: A video signal output format selection setting picture is displayed and a cursor 5a selects one of date notation system choices 1a-1c in the video signal output format selection setting picture. When the date notation choice 1a is selected, a video signal format associated with the date notation selection choice 1a is automatically selected, set and displayed as a video signal output format 'NTSC' 3. The appropriate video signal output format is set and a video signal can be outputted without permitting a user to be conscious of the video signal format.

10. 发明专利

JPH089208A VIDEO CAMERA 失效
公开(公告)号：JPH089208A
公开(公告)日：1996-01-12
申请号：JP14140094
申请日：1994-06-23
申请人： HITACHI LTD
发明人： TOMITA TSUTOMU
IPC分类号： G02B7/02 , G03B17/02 , H04N5/225
摘要： PURPOSE:To prevent the occurrence or dew condensation on the surface of a lens by providing a heat conductive body, which transmits heat from electric circuit parts having a large calorific value, or an electric head generation device in the periphery of a part which is apt to be affected by the outside temperature. CONSTITUTION:A lens 1 which is exposed to the outside and is fixed is the part being apt to be affected by the outside temperature. This video camera is provided with a lens barrel 2 which fixes the lens 1, a solid-state image pickup element 3 which becomes a heat generation body by normal operation, a neat radiation plate 4 which diffuses and radiates the neat generated by the solid-state image pickup element 3, a heat conductive plate 5 which transmits the heat obtained by the heat radiation plate 4 to the lens part, and a warming plate 6 which emits the heat conducted by the heat transmission plate 5 to the lens and its periphery to warm them. The heat radiation plate 4, the heat conductive plate 5, and the warming plate 6 are continuously formed with a metal having a high heat conductivity to efficiently conduct the heat. Thus, the power source of the video camera is turned on to properly raise the temperature of the lens and its periphery.

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