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91. 发明专利

JPH02105682A IMAGE PICKUP LENS 失效
公开(公告)号：JPH02105682A
公开(公告)日：1990-04-18
申请号：JP25713088
申请日：1988-10-14
申请人： HITACHI LTD
发明人： MIMURA ITARU , AKIYAMA TOSHIYUKI , MATSUMOTO TAKAHIRO , OZAWA NAOKI , TAKAHASHI KENJI
IPC分类号： H04N5/225 , H04N5/232 , H04N5/335
摘要： PURPOSE:To automatically exchange aberration correction data even when a lens is exchanged by providing a memory to store the aberration correction data in a lens main body, and performing registration correction by reading out the correction data stored in the lens main body at need. CONSTITUTION:Data to correct aberration generated at an optical part 4 is held corresponding to the characteristic and the position of the lens in an aberration correction data memory 2. A lens parameter detection circuit 3 detects the parameter of an image pickup state, and takes out the aberration correction data corresponding to the parameter from the memory 2. The correction data is transmitted to the microcomputer 15 of the camera main body via a transmission path 21. The microcomputer 15 computes the registration correction signals of a red color image pickup tube 6 and a blue color image pickup tube 8 by using transmitted correction data. In such a way, an operator can be released from complicated work such as to exchange the correction data, and registration defect can be completely eliminated.

92. 发明专利

JPH0279685A IMAGE PICKUP DEVICE 失效
公开(公告)号：JPH0279685A
公开(公告)日：1990-03-20
申请号：JP22996488
申请日：1988-09-16
申请人： HITACHI LTD
发明人： AKIYAMA TOSHIYUKI , MIMURA ITARU , OZAWA NAOKI , TAKAHASHI KENJI
IPC分类号： H04N5/335 , H04N5/341 , H04N9/093
摘要： PURPOSE:To dispense with high accuracy in the mounting of a solidstate image pickup element by correcting deviation in an image due to the mounting error of the image pickup element by applying constant computation on an output signal, CONSTITUTION:The light receiving area of the solid-state image pickup element to be used is widened, and the number of image elements are increased according to the above widening. Also, after the solid-state image pickup element 10 is fixed on an optical system 2, the position relation of the light receiving areas in the solid-state image pickup element and the optical axis of an optical lens 1 is measured in advance, and the information is recorded on a mounting error quantity recording arithmetic circuit 11. When the image is outputted, computation is applied on a video signal obtained from each image element of the solid-state image pickup element by a video signal arithmetic circuit 14 based on the quantity of deviation of an image element point found at an image element point travel quantity arithmetic circuit 12 from the information with respect to the mounting error recorded already, and the video level of each image element point in an effective image element area required for the output of the image is interpolated by anticipation, and a signal after interpolation is outputted. In such a way, it is not required to request high mounting accuracy for the solid-state image pickup element.

93. 发明专利

JPH01303756A DRIVE CIRCUIT FOR ELEMENT EQUIPPED WITH CAPACITIVE IMPEDANCE 失效
公开(公告)号：JPH01303756A
公开(公告)日：1989-12-07
申请号：JP13271388
申请日：1988-06-01
申请人： HITACHI LTD
发明人： AKIYAMA TOSHIYUKI , MIMURA ITARU , OZAWA NAOKI , TAKAHASHI KENJI
IPC分类号： H01L21/339 , H01L29/76 , H01L29/762 , H04N3/14 , H04N5/335 , H04N5/341 , H04N5/372 , H04N5/376
摘要： PURPOSE:To reduce power consumption by a method wherein series circuits of inductance elements and switching circuits are arranged between the driving terminals of an element for applying driving signals. CONSTITUTION:In series with inductance elements 41 and 42 arranged between the charge-coupled element driving terminals or between a driving terminal and a semiconductor substrate, switching circuits 51 and 52 are further inserted, and the switches 51 and 52 are kept in the OFF state during the period wherein the driving is suspended. That is to say, there is no DC current through the inductance elements 41 and 42 in the drive circuit when the driving is suspended because the switches are in the OFF state then. Accordingly, the voltage source downtime voltage as is may be applied to the driving terminals. This design keeps power consumption low.

94. 发明专利

JPH01303755A DRIVE CIRCUIT FOR ELEMENT EQUIPPED WITH CAPACITIVE IMPEDANCE 失效
公开(公告)号：JPH01303755A
公开(公告)日：1989-12-07
申请号：JP13271188
申请日：1988-06-01
申请人： HITACHI LTD
发明人： AKIYAMA TOSHIYUKI , MIMURA ITARU , OZAWA NAOKI , TAKAHASHI KENJI
IPC分类号： H01L21/339 , H01L29/76 , H01L29/762 , H04N3/14 , H04N5/335 , H04N5/372 , H04N5/374 , H04N5/376
摘要： PURPOSE:To facilitates the selection of transistors suitable for the purpose and reduce current consumption by a method wherein a bias-supplying current source is provided between the emitter of an emitter follower NPN transistor and a power source. CONSTITUTION:Between the emitter of an emitter follower NPN transistor 11 and a power source, a current source is provided for the supply of a bias current. A heavy bias current is allowed to flow by keeping the switch in the ON state for a brief period of time wherein a minus current flows, and the bias current is kept low throughout most of the other periods not involving the minus current flow. ln such a design, there is no need for likeness to exist between a current source transistor 12 and the emitter follower NPN transistor 11 in terms of performance characteristics, which facilitates the selection of transistors suitable for the purpose. With a heavy bias current flowing only for a limited period of time, power consumption is reduced.

95. 发明专利

JPH01303745A PACKAGE FOR SOLID-STATE IMAGE SENSING ELEMENT 失效
公开(公告)号：JPH01303745A
公开(公告)日：1989-12-07
申请号：JP13271288
申请日：1988-06-01
申请人： HITACHI LTD
发明人： MIMURA ITARU , AKIYAMA TOSHIYUKI , OZAWA NAOKI , TAKAHASHI KENJI , ETO YOSHIZUMI
IPC分类号： H04N5/225 , H01L23/02 , H01L23/34 , H01L27/14 , H01L31/02 , H04N5/335 , H04N5/361 , H04N5/369 , H04N5/372
摘要： PURPOSE:To improve the heat dissipation effect of a package and to make it possible to inhibit the temperature rise of a sensor chip by a method wherein a solid-state image sensing element is provided with a thermal conductor having a thermal conductivity superior to that of a parent material constituting the package. CONSTITUTION:A thermal conductor 4 of a thermal conductivity better than that of a package parent material 1 is buried in the lower part of a sensor chip 3 which is large in a calorilic value. One end of the conductor 4 is brought into contact to the rear of the chip 3, the other end is led out outside of a package and the end is provided with such a heat dissipation mechanism as a heat sink to improve a heat dissipation efficiency. That is, a path, which is constituted of the conductor 4, is low to a thermal resistance and can diffuse heat rapidly to the exterior. Thereby, heat, which is conducted to the sensor chip, is reduced and the temperature of the chip can be held lowly.

96. 发明专利

JPH01188087A SIGNAL PROCESSOR FOR SOLID-STATE CAMERA 失效
公开(公告)号：JPH01188087A
公开(公告)日：1989-07-27
申请号：JP1063088
申请日：1988-01-22
申请人： HITACHI LTD
发明人： NAKANO TAKAHIRO , OZAWA NAOKI , AKIYAMA TOSHIYUKI , TAKAHASHI KENJI , MIMURA ITARU
IPC分类号： H04N5/217 , H04N5/335 , H04N5/341 , H04N5/357 , H04N5/363 , H04N5/369 , H04N5/372 , H04N5/374 , H04N5/378 , H04N9/07
摘要： PURPOSE:To obtain a sufficient noise reduction effect even when the noises of plural output signals are reduced by executing the signal processing of an adding, a subtraction, etc., before applying a noise reduction means. CONSTITUTION:Two output signals are separated into two after adding to preceding amplifiers 21 and 22 respectively, one is noise-reduced by a direct current reproduction circuit 31 and a sample-and-hold circuit 41 after adding by an adding circuit 14 and obtaining a luminance signal, the other obtains a chrominance signal by adding to a chrominance signal processing circuit 15 after noise-reducing by direct current reproduction circuits 32 and 33 and sample-and-hold circuits 42 and 43. Thus, since the signal of the adding, the subtraction, etc., of the plural output signals is processed before the noise reduction means, only the noise of one noise reduction circuit is contained in a final output signal. Thus, the entire noise generated at the plural noise reduction circuits respectively corresponding to the plural output signals and the lowering of the noise reduction effect can be prevented.

97. 发明专利

JPH01166676A TELEVISION CAMERA DEVICE 失效
公开(公告)号：JPH01166676A
公开(公告)日：1989-06-30
申请号：JP32408587
申请日：1987-12-23
申请人： HITACHI LTD
发明人： MIMURA ITARU , OZAWA NAOKI , TAKAHASHI KENJI , NAKANO TAKAHIRO
IPC分类号： H04N5/335 , H04N5/341 , H04N5/351 , H04N5/353 , H04N5/357 , H04N5/369 , H04N5/378
摘要： PURPOSE:To obtain a signal with excellent S/N by supplying a movement detection scanning signal and a variable speed scanning signal to an even number line and an odd number line solid-state image pickup elements alternately and replacing the position of the picture element for movement detention and the signal storage time variable element. CONSTITUTION:A switch 30 switches a high speed scanning signal from a scanning circuit 3 and a variable speed scanning signal from a scanning circuit 2 for each prescribed time to scan odd and even number lines alternately. A switch 21 selects a signal subject to high speed scanning among signals of each line and given it to a movement detection circuit 21 to detect the movement of an object. The output of the solid-state image pickup elements on the odd and even lines is given to amplifiers 24', 24, the gain is adjusted by circuits 17', 17, the result is given to A/D converters 11', 11 and stored in memories 12', 12. A memory control circuit 25 uses the output of the movement detection circuit 21 to read the memories 12', 12, the result is added by an adder 35, given to a D/A converter 26 and the result is converted into a TV signal by a process circuit 27. A detection circuit 35 detects the lightness by the input of the movement detection circuit 21 to control the changeover of the switches 30, 31. Thus, high picture quality with excellent S/N is obtained.

98. 发明专利

JPS62213485A SIGNAL READING DEVICE FOR SOLID-STATE IMAGE PICKUP DEVICE 失效
公开(公告)号：JPS62213485A
公开(公告)日：1987-09-19
申请号：JP5477386
申请日：1986-03-14
申请人： HITACHI LTD
发明人： AKIYAMA TOSHIYUKI , OZAWA NAOKI , OGINO TAKESHI , TAKAHASHI KENJI
IPC分类号： G06K9/20 , G06T1/00 , H04N5/335 , H04N5/347 , H04N5/363 , H04N5/372 , H04N5/374 , H04N5/378
摘要： PURPOSE:To obtain an output signal removed its reset noise by integrating the output of a solid-state image pickup element, sample-holding the earlier half, and the latter half of the integral time, respectively, an subtracting these outputs from the integrated output, then sample-holding once more the resulting output. CONSTITUTION:The output signal from the solid-state image pickup device 7 is inputted to an integration circuit 55 then to sample-holding circuits 56 and 57. The circuits 56 and 57 are the circuits to sample-hold the earlier and the latter haves of the integral time of the circuit 55, hence in a sample-held signal, reset noise proportionate to said time is included. In order to eliminate such reset noise, the output vC of the circuit 57 is gain-controlled by an amplifier 58, then supplied to a subtraction circuit 59 and subtracted from the output vS+C of the circuit 56. The resulting signal is sample-held by a sample and holding circuit 60 at a time where no reset noise is included. Thus, a modulation signal components are taken out.

99. 发明专利

JPS61280189A DIGITAL TELEVISION CAMERA DEVICE 失效
公开(公告)号：JPS61280189A
公开(公告)日：1986-12-10
申请号：JP12046085
申请日：1985-06-05
申请人： HITACHI LTD
发明人： SATO KAZUHIRO , AKIYAMA TOSHIYUKI , OZAWA NAOKI , MIMURA ITARU , OGINO TAKESHI
IPC分类号： H04N11/04 , H04N9/07
摘要： PURPOSE:To make substantially equal the quantizing noise of a three primary color signal being demodulated and calculated by converting whether a signal corresponding to respective complementary color by a separate A/D converter different in the number of quantizing bits, or demodulating and calculating in the stage of an analog signal, and A/D converting the resulted signal. CONSTITUTION:An image of an object to be photographed is formed on a solid- state image pickup element 3 by a lens 1. After output signals 3A, 3B are amplified, by using a chrominance separating circuit 12, a chrominance signal corresponding to a color filter is separated, and the respective chrominance signals are converted into the digital data by A/D converters 13A-13D different in the number of quantizing bits. When using the color filter, Mg1, Cy1, Ye1 are multi color signals and generally have a signal amplitude larger than a primary color signal G4d1. In a camera circuit, from the respective complementary color signals, primary color signals such as G, R are demodulated. In order to maintain a quantizing level of m bits in the demodulated primary signal, to the respective chrominance signals, the A/D converter different in number of quantizing bits is assigned.

100. 发明专利

JPS61274474A OUTPUT CIRCUIT OF SOLID-STATE IMAGE PICKUP DEVICE 失效
公开(公告)号：JPS61274474A
公开(公告)日：1986-12-04
申请号：JP11407285
申请日：1985-05-29
申请人： HITACHI LTD
发明人： AKIYAMA TOSHIYUKI , SATO KAZUHIRO , OZAWA NAOKI
IPC分类号： H04N5/14 , H04N5/335 , H04N5/363 , H04N5/365 , H04N5/372 , H04N5/374 , H04N5/378
摘要： PURPOSE:To decrease a reset noise and a 1/f noise for improving S/N of an output signal and the picture quality by applying the inverse of G times amplification to an output signal from an output amplifier circuit and inputting the result to one terminal of a reset MOSFET through a feedback circuit. CONSTITUTION:The output signal of the output amplifier 4 is inputted to one terminal of a reset MOS FET 32 through an impedance 8 (ZL=RL) comprised of an external amplifier 5 having amplification factor -G times and a resistor RL. In this circuit, when the reset MOS FET 32 is turned on, a noise voltage generated between capacitors C0 is inputted in a form having the noise signal of opposite polarity through the voltage RL and the reset MOS FET 32. Thus, the noise generated between the capacitors C0 is cancelled by the noise signal inputted through the FET 32. On the other hand, the 1/f noise generated by a source follower MOS FET 31 is cancelled by the noise having opposite polarity inputted from a terminal 36 similarly as the noise of the reset MOS FET 32. Thus, the S/N of the output signal and the picture quality are improved remarkably.

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