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31. 发明专利

JPH01238054A SOLID-STATE IMAGE SENSING DEVICE 失效
公开(公告)号：JPH01238054A
公开(公告)日：1989-09-22
申请号：JP6331588
申请日：1988-03-18
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： TAKAHASHI KENJI , OZAWA NAOKI , AKIYAMA TOSHIYUKI , MIMURA ITARU , NAKANO TAKAHIRO , KUNIMASA YOSHIO
IPC分类号： H01L27/14 , H01L27/146 , H04N5/335 , H04N5/341 , H04N5/359 , H04N5/369 , H04N5/374 , H04N5/3745
摘要： PURPOSE:To realize low noise by constituting the title device by a horizontal signal conductor group which is used commonly when reading out output of a photoelectric sensing element, a feedback preamplifier initial stage group for reading out current connected to each of the horizontal signal lines, and a plurality of common line groups which connect the preamplifier initial stage group. CONSTITUTION:An initial stage transistor is provided to a device of horizontal output line of each stage of preamplifier initial stage section 1-1, 1-2,...1-n,.... Load resistance 33 and a switch 35 are connected in series at an output end of the initial stage transistor 31 and connected to a common power source terminal 37. A signal load resistance 32 and switch 34 are connected to an input terminal of the initial stage transistor, which is connected to a common line 13 in the outside of a block 1-1. An output end of the initial stage transistor 31 is wired to a common line 12 through a switch 36. Switches 34, 35 and 36 in a block make ON-OFF operation simultaneously by vertical scanning pulse 23. Owing to this equivalent circuit, the capacity related to equivalent noise resistance of the initial stage preamplifier is only CH, Ci. According to this device structure, substantial reduction of noises can be realized, thus improving S/N.

32. 发明专利

JPH01215185A CONTOUR COMPENSATION CIRCUIT 失效
公开(公告)号：JPH01215185A
公开(公告)日：1989-08-29
申请号：JP3938388
申请日：1988-02-24
申请人： HITACHI LTD
发明人： MIMURA ITARU , ETO YOSHIZUMI , TAKAHASHI KENJI , AKIYAMA TOSHIYUKI , OZAWA NAOKI
IPC分类号： H04N5/208
摘要： PURPOSE:To prevent the reduction of resolution caused in the image pickup of a moving object by setting a contour compensation based on the movement of a detected copying body. CONSTITUTION:The circuit consists of a contour compensation circuit 2 compensating the resolution, a movement detection circuit 1 and a compensation characteristic decision circuit 3, the video signal input of the circuit is branched into two, one is given to the movement detection circuit 1 and the other is inputted to the contour compensation circuit 2. The movement detection circuit 1 detects the movement of the object from the inputted signal, decides the area for resolution compensation and the compensation characteristic decision circuit 3 applies the correction signal giving a high resolution to the area decided by the movement detection circuit 1 to the circuit 2. On the other hand, a correction signal to reduce the correction quantity is supplied to the still section. Thus, a video signal is obtained at the output terminal of the contour compensation circuit 2 with high resolution with respect to the moving object and without increased noise for the still section.

33. 发明专利

JPH01114287A CHROMA SIGNAL PROCESSOR OF VENEER COLOR CAMERA 失效
公开(公告)号：JPH01114287A
公开(公告)日：1989-05-02
申请号：JP27015987
申请日：1987-10-28
申请人： HITACHI LTD
发明人： OZAWA NAOKI , TAKAHASHI KENJI , AKIYAMA TOSHIYUKI , MIMURA ITARU , NAKANO TAKAHIRO
IPC分类号： H04N9/64 , H04N9/07
摘要： PURPOSE:To prevent the mixture of other chrominance components and the occurrence of line crawl by obtaining the R, G and B signals of straight polarity in chroma signal demodulation circuits of same constitution. CONSTITUTION:Subtraction circuits 141 and 142 which obtain the difference signals between the output signals of separation circuits 121-128 which execute separation for respective picture element signals and the output signals of amplifier circuits 131-138, delay circuits 161-163 which delay the outputs for one horizontal scan period, and addition circuits 191-193 which add the output signals of the subtraction circuits and those of the delay circuits are provided. One chroma signal demodulation circuit is constituted by a pulse generation circuit 18 generating a pulse signal for controlling the separation circuits 121-128 in such a way that the objective picture element signal is added to the input side of the subtraction signals of the subtraction circuits 141 and 142 and the input side of signals to be subtracted, and the chroma signal decodemodulation circuits are provided for the number of the chroma signals to be demodulated. Thus, other chrominance components are impervious to be mixed and the occurrence of line crawl can be prevented.

34. 发明专利

JPS63301687A SINGLE PLATE COLOR SOLID-STATE IMAGE PICKUP DEVICE 失效
公开(公告)号：JPS63301687A
公开(公告)日：1988-12-08
申请号：JP831688
申请日：1988-01-20
申请人： HITACHI LTD
发明人： OZAKI TOSHIBUMI , OZAWA NAOKI , OBA SHINYA , MIMURA ITARU
IPC分类号： H04N9/07
摘要： PURPOSE:To attain a sequential scanning required for an EDTV system by reading independently the signals of all picture elements at each field without mixing them in an element and constituting a color filter and a signal processing circuit so as to obtain a luminance signal independent from the signals of respective rows at every row. CONSTITUTION:A scanning function provided on a single color solid-state image pickup element 91 independently reads the signal charges of all the picture elements at each field without mixing them in the element. At this time, the color filter disposed on the element is formed so as to obtain the luminance signal at every row. The signal processing circuits 93-96 external of the element separates and forms the luminance signal at every row from an element output. Thereby, a luminance signal component conventionally obtained for respective two lines in the respective fields can be obtained at every row and the sequential scanning signal required for the EDTV can be obtained from the solid-state image pickup element having the number of vertical picture elements.

35. 发明专利

JPS63154A SOLID-STATE IMAGE SENSING ELEMENT 失效
公开(公告)号：JPS63154A
公开(公告)日：1988-01-05
申请号：JP14374986
申请日：1986-06-19
申请人： HITACHI LTD
发明人： OBA SHINYA , TAKAHASHI KENJI , AKIYAMA TOSHIYUKI , OZAWA NAOKI , YOSHIDA ISAO , OZAKI TOSHIBUMI
IPC分类号： H01L27/148 , H01L27/146 , H04N5/335 , H04N5/357 , H04N5/369 , H04N5/372 , H04N5/374
摘要： PURPOSE:To increase mutual conductance without spreading the area of a gate and augmenting the capacitance of an input gate, and to lower noises by forming a transistor, impurity distribution of which under the gate is not equalized, on a head section for an output means. CONSTITUTION:A first P-type well 5, an N semiconductor layer 6 and a second P-type well are shaped onto an N-type substrate 4 in succession, repeating ion implantation and impurity diffusion. Since a second P-type semiconductor layer 7 is extended from the source 25 side, impurity diffusion under a gate 27 is not equalized, and threshold voltage on the source 25 side is made larger than that on the drain 26 side. Accordingly, the mutual conductance of the transistor can be augmented without remarkably increasing the area of the gate 27, input capacitance, and noises are reduced.

36. 发明专利

JPS62159458A SOLID-STATE IMAGE PICKUP DEVICE 失效
公开(公告)号：JPS62159458A
公开(公告)日：1987-07-15
申请号：JP53986
申请日：1986-01-08
申请人： HITACHI LTD
发明人： AKIYAMA TOSHIYUKI , OZAKI TOSHIBUMI , ANDO HARUHISA , OZAWA NAOKI
IPC分类号： H01L27/14 , H01L27/148 , H04N5/335 , H04N5/341 , H04N5/351 , H04N5/357 , H04N5/372
摘要： PURPOSE:To eliminate an external switch circuit in which an output signal is replaced even if an interlacing operation is executed in an image pickup element for reading out a signal charge of two lines by two horizontal CCDs. CONSTITUTION:A signal charge stored in a photoelectric converter 2 is transferred by vertical CCDs 11-1N to horizontal CCDs 3, 3', and simultaneously read out in two lines by CCDs 3, 3'. A gate connected with a terminal M2 and a storage unit connected with a terminal M2 are provided between the vertical CCDs and the horizontal CCD3'. Two lines of signal charges are transferred to the CCDs 3, 3' without using the storage unit at first field reading time. The order of the lines to be transferred to the CCDs 3, 3' are replaced to be transferred by utilizing the storage unit at second field reading time. Then, even if the combination of the lines to be read simultaneously is altered at every field to be interlaced in a single plate color image pickup element using a mosaiclike color filter, the horizontal CCDs 3, 3' always output the same color signals, thereby eliminating an external switch circuit.

37. 发明专利

JPS61227490A METHOD FOR REDUCING FALSE COLOR SIGNAL IN COLOR VIDEO CAMERA 失效
公开(公告)号：JPS61227490A
公开(公告)日：1986-10-09
申请号：JP6645985
申请日：1985-04-01
申请人： HITACHI LTD
发明人： SATO KAZUHIRO , AKIYAMA TOSHIYUKI , MIMURA ITARU , OZAWA NAOKI , OGINO TAKESHI
IPC分类号： H04N9/07
摘要： PURPOSE:To decrease the secondary effect on a color signal by separating a false signal component included in a color signal and decreasing the false component. CONSTITUTION:Output signals (b, c) corresponding to filters E, F when a strip- shaped object comprising a light part and a dark part comes to a position shown in a figure A are fed to input terminals 10, 11, the signal (c) is delayed by a delay circuit 12 to match the phase, and a difference signal is formed by a subtraction circuit 13, then a false color signal shown in the hatched part in a figure D appears at the edge of the picture. A clip circuit 14 eliminates a negative false signal (E4-F4), a sample-and-hold circuit 15 and a low-pass filter circuit 16 extract the low frequency component to obtain a signal E'. The signal whose phase is matched by a delay circuit 17 is subjected to clip for a signal higher than the signal level shown in E' by a clip circuit 18 to obtain a signal F'. A positive false signal portion (E2-F2) is eliminated from the signal F' and a color signal with less false signal is obtained through a low-pass filter 19.

38. 发明专利

JPS61102879A Vertical smear removing method for solid-state image pickup device 失效
标题翻译：用于固态图像拾取器件的垂直小波导去除方法
公开(公告)号：JPS61102879A
公开(公告)日：1986-05-21
申请号：JP22391284
申请日：1984-10-26
申请人： Hitachi Ltd
发明人： SATO KAZUHIRO , AKIYAMA TOSHIYUKI , OZAWA NAOKI , OGINO TAKESHI
IPC分类号： H04N5/335 , H04N5/351 , H04N5/359 , H04N5/374 , H04N5/378
摘要： PURPOSE: To enable vertical smear correction ample for the movements of camera and/or the objects by detecting the vertical smear component within 1H duration provided with an interval of plural horizontal scan durations and correct successively the vertical smear components of the screen during said plural horizontal scan durations by the detected components.
CONSTITUTION: The scanning of a solid-state image pickup element 11 starts at the first transition of vertical blanking pulses, for instance, at every 13 H the vertical clock pulse is masked and the output of vertical shift register is stopped. As a result, the element 11 gives out a signal that includes the vertical smear durations only. This signal is amplified, AD converted, and transffered to a switch 14. The switch 14 separates the said vertical smear component and the signal component, and the former component is accumulated in a memory circuit 15. Meanwhile, the signal component is led to a subtraction circuit 16, where differences to the output signal from the memory circuit 15 is taken and the vertical smear component included in the signal is removed. The memory circuit 17 temporarily accumulate said signal. By reading the accumulation, a signal F
1 is transformed into a signal G
1 .
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过在多个水平扫描持续时间的间隔内检测1H持续时间内的垂直涂片分量，使相机和/或对象的运动能够进行垂直涂片校正，并在所述多个水平方向连续校正屏幕的垂直拖尾分量通过检测到的组件扫描持续时间。构成：固态摄像元件11的扫描从垂直消隐脉冲的第一次转变开始，例如在每隔13H处屏蔽垂直时钟脉冲并停止垂直移位寄存器的输出。结果，元件11仅发出包括垂直拖尾持续时间的信号。该信号被放大，AD转换并传输到开关14.开关14分离所述垂直拖尾分量和信号分量，并且前一分量累积在存储器电路15中。同时，信号分量被引导到减法电路16，其中取得来自存储电路15的输出信号的差异，并且除去信号中包括的垂直拖尾分量。存储电路17暂时累积所述信号。通过读取积累，将信号F1变换为信号G1。

39. 发明专利

JPS60226172A SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPS60226172A
公开(公告)日：1985-11-11
申请号：JP8174984
申请日：1984-04-25
申请人： HITACHI LTD
发明人： ANDOU HARUHISA , OOBA SHINYA , NAKAI MASAAKI , OZAKI TOSHIBUMI , TAKEMOTO KAYAO , OZAWA NAOKI
IPC分类号： H01L27/146 , H01L27/14 , H04N5/335 , H04N5/341 , H04N5/372 , H04N5/374
摘要： PURPOSE:To realize a high-sensitivity image pickup element with less random noise by a method wherein a level shift circuit adds to an inversion amplifier inserted between a transfer transistor and a vertical signal line capacitating a depletion mode transistor with low 1/f noise to work as a driving transistor. CONSTITUTION:A level shift circuit A composed of transistors 44, 45 is located between a transfer transistor 41 and the output terminal of an inversion amplifoer constituted of transistors 42, 43. This causes the threshold voltage of the transistor 41 to be apparently higher by the level shift voltage VGS. The increase sufficiently makes up for the threshold voltage that may be low of the driving transistor 43. The leve shift voltage may be freely regulated with the transistor 45 controlling the current in the transistor 44. Of the noise present in the level shift circuit A itself, especially when a depletion mode transistor is used, the level of the 1/f component changes subject to the current level. Operation is possible in the region of low 1/f noise when the quantity of level shift is regulated for the proper operation of the inversion amplifier.

40. 发明专利

JPS59171368A Solid-state image pickup device 失效
标题翻译：固态图像拾取器件
公开(公告)号：JPS59171368A
公开(公告)日：1984-09-27
申请号：JP4418883
申请日：1983-03-18
申请人： Hitachi Ltd
发明人： OZAWA NAOKI , TAKAHASHI KENJI , NAGAHARA SHIYUUSAKU , TAKEMOTO KAYAO , NISHIZAWA SHIGEKI , SATOU MASANORI , SUZUKI SATOSHI
IPC分类号： H04N5/21 , H04N5/335 , H04N5/341 , H04N5/359 , H04N5/374
CPC分类号： H04N5/2175
摘要： PURPOSE:To prevent vertical smear from being generated even when a solid- state image pickup element is used by obtaining a difference signal via a gate circuit and a subtraction circuit since a signal obtained from an even number and an odd number row of horizontal picture element train is obtained respectively from respective output means. CONSTITUTION:Gate circuits 142, 143 and 140, 144 output an input signal respectively for an odd number and an even number of field period by a control signal at terminals 131, 132. Thus, an optical signal S0 of an odd number of row and a vertical smear signal Ve are obtained from a terminal 161 at each horizontal scanning period of an odd number field and a vertical smear signal V0 is obtained from the terminal 162. On the other hand, an optical signal Se of an even number of row and the signal V0 are obtained from the terminal 161 and the signal Ve is obtained from the terminal 162 at each horizontal scanning period of an even number of field. In this case, it is regarded as V0 Ve. A signal at the terminals 161, 162 is added to a subtraction circuit 18 through preamplifiers 171, 172. In this case, output signals Sout1, Sout2 of the subtraction circuit at both fields are respectively Sout1=(S0+Ve)-V0 S0 and Sout2= (Se+V0)-Ve Se and the vertical smears of both fields are eliminated.
摘要翻译：目的：为了防止通过经由门电路和减法电路获得差分信号来使用固态图像拾取元件，因为从偶数和奇数行的水平像素获得的信号产生垂直污迹分别从相应的输出装置获得列车。构成：门电路142,143和140,144通过端子131,132处的控制信号分别输出奇数和偶数场周期的输入信号。因此，奇数行的光信号S0和在奇数场的每个水平扫描周期从终端161获得垂直污点信号Ve，并且从端子162获得垂直污迹信号V0。另一方面，偶数行的光信号Se和从端子161获得信号V0，并且在偶数场的每个水平扫描周期从端子162获得信号Ve。在这种情况下，视为V0 Ve。端子161,162处的信号通过前置放大器171,172被加到减法电路18.在这种情况下，两个场的减法电路的输出信号Sout1，Sout2分别为Sout1 =（S0 + Ve）-V0 S0和 Sout2 =（Se + V0）-Ve Se和两个场的垂直污迹都被消除。

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