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1. 发明专利

JPS61245675A IMAGE PICKUP TUBE DEVICE 失效
公开(公告)号：JPS61245675A
公开(公告)日：1986-10-31
申请号：JP8640085
申请日：1985-04-24
申请人： HITACHI LTD , HITACHI ELECTRONICS
发明人： MARUYAMA MASANORI , TAKAHASHI KENJI , KUDO KOJI , HONBOU MASANORI , NAGAHARA SHUSAKU
IPC分类号： H04N5/228 , H01J29/48
摘要： PURPOSE:To execute stably an automatic beam optimizing (ABO) operation by a simple driving circuit, by applying a signal voltage for controlling a current quantity to not only the first lattice but also the second lattice. CONSTITUTION:An image pickup tube 100 is provided with a cathode 1, the first lattice 2, the second lattice and a photoconductive target 5. A signal obtained from a pre-amplifier PA and a signal generated by a cathode resistance 10 are inputted to a differential amplifier 6 and driving circuits 7, 8 convert the output of the differential amplifier 6 to a driving signal voltage, respectively, superpose it on DC voltage sources 20, 30 and apply it to the first lattice 2 and the second lattice 3. when the applied voltage of the second lattice rises, an acceleration electric field becomes strong and a beam current increases and the beam current dynamic range of the image pickup tube can be expanded.

2. 发明专利

JPS6043986A REGISTRATION CORRECTING CIRCUIT OF COLOR TELEVISION CAMERA 失效
公开(公告)号：JPS6043986A
公开(公告)日：1985-03-08
申请号：JP15157683
申请日：1983-08-22
申请人： HITACHI LTD , HITACHI ELECTRONICS
发明人： ISHIBASHI SHIZUKA , TAKAHASHI KENJI , KUDOU KOUJI , MASUDA YUKIHIRO , HONBOU MASANORI , KODAMA TAKUMA
IPC分类号： H04N9/093
摘要： PURPOSE:To prevent shading, and to execute independently the correction of a measure by fetching a low band component in distortion correcting quantity of an intersection point divided in the horizontal and vertical directions so that the influence of data of the lowest stage of a picture plane is not exerted on the uppermost stage. CONSTITUTION:The passing property of a low-pass filter is varied between the data Yn of the lowest stage and the data Yo of the uppermost stage, and in order to the influence of data Y is not exerted on Yo, the frequency characteristic is made roughly flat by short-circuiting both ends of resistances R1, R2 of an active filter. As a result, information of the data Yn stored in capacitors C1, C2 in the active filter is discharged, the result is convenient for inputting new information.

3. 发明专利

JPS61187485A METHOD AND DEVICE FOR CORRECTING TELEVISION CAMERA 失效
公开(公告)号：JPS61187485A
公开(公告)日：1986-08-21
申请号：JP2626785
申请日：1985-02-15
申请人： HITACHI LTD , HITACHI ELECTRONICS
发明人： HONBOU MASANORI , TAKAHASHI KENJI , KUDO KOJI , NAGAHARA SHUSAKU
IPC分类号： H04N9/093
摘要： PURPOSE:To correct the registration drift of a picture image at high accuracy by dividing said drift into the linear component and nonlinear one of the picture, providing respective independent signals corresponding to these components and controlling a deflecting device with the use of said components. CONSTITUTION:A corrected waveform generated in corrected waveform generating circuits 27 and 28 and those 29 and 30, which correspond to linear and nonlinear components of the magnitude color aberration of a zoom lens 19 in screen horizontal and vertical directions, respectively, are superimposed with the horizontal deflecting waveform of a horizontal defecting circuit 24 and the vertical deflecting waveform of a vertical deflecting circuit 25, whereby the registration drift in screen horizontal and vertical directions, which is caused by the magnitude color aberration of the zoom lens 19, is corrected. A microprocessor 32 reads a parameter value of a stop value F, a focal length (f) distanse of object (s), etc., in real time, calculates a correcting amount with the aid of the measurement data of the magnitude color aberration of the zoom lens 19, which is stored in a memory 31 corresponding to said values, and controls gains of the corrected waveform generating circuits 27-30.

4. 发明专利

JPS6097794A REGISTRATION CORRECTION CIRCUIT OF COLOR TELEVISION CAMERA 失效
公开(公告)号：JPS6097794A
公开(公告)日：1985-05-31
申请号：JP20484483
申请日：1983-11-02
申请人： HITACHI LTD , HITACHI ELECTRONICS , HITACHI VIDEO ENG
发明人： KODAMA TAKUMA , TAKAHASHI KENJI , ISHIBASHI SHIZUKA , KUDOU KOUJI , MASUDA YUKIHIRO , HONBOU MASANORI , MIYOSHI OSAMU , YOSHIHARA KAZUHISA
IPC分类号： H04N9/093
摘要： PURPOSE:To reduce a quantization error and shading generated on a scope by adding an adder to a low bit A/D convertor and making equivalently it higher in bit. CONSTITUTION:After an address is specified and the correction quantity in the address is set in order to obtain registration correction data, these tada are stored in the 1st memory 93. Then the data stored in the memory 93 are read out in the vertical direction, and outputted as digital data through a D/A convertor 96, LPF97 and an A/D convertor 98. These output data are inputted to a shift register 99, and the output of each shift register is inputted to an adder 100, and the result is made higher in bit. The output of the adder 100 is added to a D/A convertor 102 through a memory 101, averaged (to make it higher in bit) in the level direction, and the result is taken out through a low-pass filter 103.

5. 发明专利

JPS6057785A TELEVISION CAMERA DEVICE 失效
公开(公告)号：JPS6057785A
公开(公告)日：1985-04-03
申请号：JP16501683
申请日：1983-09-09
申请人： HITACHI LTD , HITACHI ELECTRONICS
发明人： MASUDA YUKIHIRO , ISHIBASHI SHIZUKA , TAKAHASHI KENJI , KODAMA TAKUMA , KUDOU KOUJI , HONBOU MASANORI
IPC分类号： H04N5/16 , H04N9/093
摘要： PURPOSE:To increase the amount of correction by modulating a video signal with a waveform obtained by differentiating a correction waveform and passing through a nonlinear operation circuit in order to correct shading by means of the digital registration correction of a television camera. CONSTITUTION:A data read from a digital memory 9 is converted into an analog signal by a D/A converter 8, the data is formed into a correction waveform through a smoothing circuit 7, the waveform is superimposed on a deflection waveform by an adder circuit 6 and fed to a deflection coil drive circuit 10. The smoothed waveform is differentiated by a differentiation circuit 46, the result is passed through the nonlinear operating circuit 7 and its output changes the gain of a gain control circuit 48 controlling the output from an image pickup tube 13. The shading generated in adjusting registration is corrected and the corrected amount is increased.

6. 发明专利

JPS6161569A Television camera device 失效
标题翻译：电视摄像机
公开(公告)号：JPS6161569A
公开(公告)日：1986-03-29
申请号：JP18355584
申请日：1984-08-31
申请人： Hitachi Denshi Ltd , Hitachi Ltd
发明人： HONBOU MASANORI , IWABE KAZUNORI , KUDO KOJI , NAGAHARA SHUSAKU
IPC分类号： H04N3/23
摘要： PURPOSE:To correct most suitably the picture distortion on an image pickup tube surface by generating a picture distortion correction waveform synchronous with the pulse obtained by means for shifting arbitrarily phases of horizontal and vertical synchronizing pulses. CONSTITUTION:A deflection waveform generator circuit 11 generates a deflection waveform synchronous with an inputted synchronizing pulse HD. Simultaneously a phase-shifting circuit 12 advances or delays the phase of the pulse HD by phase shifting amount in accordance with the dislocation quantity between a preset optical axis and the center of a signal scan area. The pulse HD whose phase is shifted by the circuit 12 is transmitted to a correction waveform generator circuit 13, where the correction waveform is generated synchronous with the synchronizing pulse after phase shifting. A waveform synthesizing circuit 14 overlaps the correction waveform with respect to an optical system with the deflection waveform from the circuit 11 to transmit it to a deflecting circuit 15. Thus, since the phase of the correction waveform is shifted in accordance with the dislocation quantity between the center of the distortion of the optical system and that of the signal scan area and the former can be overlapped with the center of the correction waveform, the optical distortion can be appropriately corrected.
摘要翻译：目的：通过产生与用于移动水平和垂直同步脉冲的任意相位的手段获得的脉冲同步的图像失真校正波形，最适当地校正图像拾取管表面上的图像失真。构成：偏转波形发生器电路11产生与输入的同步脉冲HD同步的偏转波形。同时，移相电路12根据预设的光轴和信号扫描区域的中心之间的位移量，使相位移动量推进或延迟脉冲HD的相位。相位被电路12移位的脉冲HD被发送到校正波形发生器电路13，其中校正波形与相移之后的同步脉冲同步地产生。波形合成电路14相对于具有来自电路11的偏转波形的光学系统的校正波形重叠，以将其发送到偏转电路15.因此，由于校正波形的相位根据位于第光学系统的失真的中心和信号扫描区域和前者的失真的中心可以与校正波形的中心重叠，可以适当地校正光学失真。

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