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21. 发明专利

JP2002346403A THERMOHYGROSTAT 失效
公开(公告)号：JP2002346403A
公开(公告)日：2002-12-03
申请号：JP2001151826
申请日：2001-05-22
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： MATSUSHITA KAZUHIRO , KAWAMOTO YASUO , OZAWA NAOKI , ITO MICHIFUMI
IPC分类号： F24F5/00 , B01L7/00 , F25B1/00 , F25B7/00
摘要： PROBLEM TO BE SOLVED: To provide a thermohygrostat, which enables reducing the electrical power consumption used for operating it. SOLUTION: The operation of a refrigerating apparatus can be carried out by the two kinds of operation methods that are a two refrigerant system and a single stage refrigerant system by a high temperature wide cycle by means of equipping the refrigerating apparatus with two series of coolers and connecting those respectively to the low temperature side cycle and the high temperature side cycle. Also, in any operating methods, the cooling capacity of the refrigerating apparatus is adjustable by inverter-controlling a compressor of the high temperature side cycle. Further, the operation, in which the cooler connected to the high temperature side cycle is used as a condenser, can be carried out.

22. 发明专利

JP2001330277A CONSTANT TEMPERATURE CONSTANT HUMIDITY DEVICE 失效
公开(公告)号：JP2001330277A
公开(公告)日：2001-11-30
申请号：JP2000149319
申请日：2000-05-22
申请人： HITACHI LTD , HITACHI SHIMIZU ENG CO LTD
发明人： OZAWA NAOKI , MATSUSHITA KAZUHIRO , KAWAMOTO YASUO
IPC分类号： F25D21/14 , B01L7/04 , F24F5/00 , G01N17/00
摘要： PROBLEM TO BE SOLVED: To provide a constant temperature constant humidity device to reduce a consumption amount of pure water by recovering and re-utilizing pure water in humidified steam, though pure water for a humidifier is wasted since humidified steam generated by a humidifier during control of humidity is discharged to the outside of a test tank due to a pressure difference between the inside and the outside of the test tank. SOLUTION: In the constant temperature constant humidity device provided at the inside of the test tank 1 with a heater 7, the humidifier 3, and a cooler 8, during working of the humidifier 3, humidified steam discharged through an equalizing opening 2 is cooled by a condensation pipe 4 connected to the equalizing opening 2 and extending downward. Pure water condensed on the inner wall of the condensing pipe 4 is recovered in a water-receiving tank 5 and re-utilized for humidifying effected at the humidifier 3.

23. 发明专利

JP2585522B2 失效
公开(公告)号：JP2585522B2
公开(公告)日：1997-02-26
申请号：JP53986
申请日：1986-01-08
申请人： HITACHI LTD
发明人： AKYAMA TOSHUKI , OZAKI TOSHIBUMI , ANDO HARUHISA , OZAWA NAOKI
IPC分类号： H01L27/14 , H01L27/148 , H04N5/335 , H04N5/341 , H04N5/351 , H04N5/357 , H04N5/372

24. 发明专利

JPH04304089A SIGNAL INTERPOLATION DEVICE 失效
公开(公告)号：JPH04304089A
公开(公告)日：1992-10-27
申请号：JP6810991
申请日：1991-04-01
申请人： HITACHI LTD
发明人： OZAWA NAOKI
IPC分类号： G02B27/46 , G06F17/10 , H04N9/07 , H04N9/64
摘要： PURPOSE:To reduce the false color signal occurring at the edge part of an object even when the size of high frequency component of the object occupies larger proportion than that of low frequency component or not to degrade the improving effect on the false color signal at the peripheral part of the object where the brightness changes sharply. CONSTITUTION:An optical low-pass filter 12 provided on the front surface of an imaging device 2 combined with plural kinds of color filters reduces the component intruding as a side band component from spacial frequency components of the object within the bands of low-pass filters 7, 8 which are conversion means when a factor is determined. When a detection circuit 14 does not detect the sharp change of the object, a gate circuit 13 operates to interpolate with the average value of the back and forth picture signals obtained from a correction circuit 5.

25. 发明专利

JPH043594A SIGNAL INTERPOLATION DEVICE 失效
公开(公告)号：JPH043594A
公开(公告)日：1992-01-08
申请号：JP10300090
申请日：1990-04-20
申请人： HITACHI LTD
发明人： OZAWA NAOKI , TAKAHASHI KENJI , AKIYAMA TOSHIYUKI , MIMURA ITARU , MATSUMOTO TAKAHIRO
IPC分类号： H04N5/335 , H04N5/367 , H04N5/378 , H04N7/015 , H04N19/00 , H04N19/132 , H04N19/136 , H04N19/14 , H04N19/182 , H04N19/423 , H04N19/59 , H04N19/80 , H04N19/85 , H04N7/13 , H04N7/00
摘要： PURPOSE:To attain interpolation not causing a false pseudo at a border of a subject by correcting signals of adjacent points according to a coefficient signal obtained from both a 1st and a 2nd signals. CONSTITUTION:An input signal 1 is fed to a 1H delay circuit 2 having a delay time equal to one horizontal scanning period, from which a 1H delay signal 3 is generated and fed to low pass filters 4, 5, converted into low frequency signals 6, 7, and fed to a coefficient circuit 8, from which a coefficient signal 9 is obtained. Then the signal is fed to a multiplier 10, in which the signal 3 and the signal 9 are multiplied and an interpolation signal 11 is obtained, which is added to the input signal 1 to obtain an output signal 13. Side band components of a sampling frequency of signals of 1st and 2nd signal groups are opposite in phase to each other. Thus, the side band component is eliminated in the interpolation signal obtained by the correction and the signal 13 after interpolation obtained from the addition of the signal of the 1st signal group before interpolation. Thus, a pseudo signal generated at the border of a subject in the reproduced picture is suppressed.

26. 发明专利

JPH03135177A SIGNAL READOUT DEVICE 失效
公开(公告)号：JPH03135177A
公开(公告)日：1991-06-10
申请号：JP27159489
申请日：1989-10-20
申请人： HITACHI LTD
发明人： TAKAHASHI KENJI , AKIYAMA TOSHIYUKI , MIMURA ITARU , OZAWA NAOKI , MATSUMOTO TAKAHIRO
IPC分类号： H04N5/335 , H04N5/341 , H04N5/357 , H04N5/363 , H04N5/369 , H04N5/372 , H04N5/378
摘要： PURPOSE:To obtain a video signal with a broad band and high picture quality by extracting a clock frequency component from a signal output and feeding back a DC level proportional to the amplitude of leakage clock to a correlation duplicate sampling circuit. CONSTITUTION:A clock frequency is extracted at a BPF 1 from an output signal at an output point P1 of a correlation duplicate sampling circuit, the leakage component is subject to synchronization detection by a synchronization detection circuit 2 and a DC voltage proportional to the amplitude is converted. The voltage is given to a gate circuit 3, a signal is extracted by using a gate pulse GP, the signal is compared with a reference voltage Vf at a differential amplifier 4 and a comparison output is given to a loop filter 5, and the output is used as a reference voltage of a clamp circuit 42 and a negative feedback circuit is constituted as a whole. In the negative feedback circuit, the voltage Vf is set to an earth level and the converged value is controlled so that an output level of the circuit 2 is zero, that is, the clock frequency at a point P1 is controlled to be zero. Thus, the video signal with an excellent phase characteristic is obtained and a sufficiently wide band output signal is obtained.

27. 发明专利

JPH02172370A IMAGE PICKUP DEVICE 失效
公开(公告)号：JPH02172370A
公开(公告)日：1990-07-03
申请号：JP32579288
申请日：1988-12-26
申请人： HITACHI LTD
发明人： AKIYAMA TOSHIYUKI , MIMURA ITARU , OZAWA NAOKI , TAKAHASHI KENJI , MATSUMOTO TAKAHIRO
IPC分类号： H04N5/232
摘要： PURPOSE:To suppress the spread of an image due to the movement of an object during the storage period of a signal charge by devising the device such that a relative speed of an image formed on a photodetecting face with respect to the photodetecting face is decreasing while a signal charge is stored or the image is made nearly standstill on the photodetecting face even if the object is moving. CONSTITUTION:The signal charge is stored while moving an optical system such as a lens 1 and an image pickup element 2 or either of them in matching with the movement of an object so that a relative speed of a noted image being at least part of the image formed on the photodetecting face of an image pickup element 2 with respect to the photodetecting face of the image pickup element 2 is small or nearly at a standstill for a period being nearly an integral number of multiple of a signal charge storage period or a signal charge readout period. Thus, the spread of the image due to a moving object for the signal charge storage period is suppressed.

28. 发明专利

JPH0223790A METHOD AND CIRCUIT FOR REGISTRATION CORRECTION 失效
公开(公告)号：JPH0223790A
公开(公告)日：1990-01-25
申请号：JP17270988
申请日：1988-07-13
申请人： HITACHI LTD
发明人： MIMURA ITARU , AKIYAMA TOSHIYUKI , ETO YOSHIZUMI , OZAWA NAOKI , TAKAHASHI KENJI
IPC分类号： H04N9/093
摘要： PURPOSE:To obtain a video signal free from a color slip and in addition, of high resolution even in a color camera using a solidstate image pickup element by controlling the factor of a two-dimensional filter according to a registration error. CONSTITUTION:A lens parameter detection circuit 1 detects parameters such as the zoom ratio Z of a lens, a stop value F, subject distance L, etc., in a photographing state, and outputs them to an aberration operation circuit 2. The operation circuit 2 operates the aberration quantity of the lens from the supplied lens parameters, and outputs it to a factor operation circuit 3. The factor operation circuit 3 determines the factor of the lens from the supplied aberration quantity of the lens, and outputs it to a registration correction circuit (two-dimensional filter) 4. The correction circuit 4 multiplies an input signal by the factor, and corrects registration.

29. 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.

30. 发明专利

JPH01303757A DRIVE CIRCUIT FOR ELEMENT EQUIPPED WITH CAPACITIVE IMPEDANCE 失效
公开(公告)号：JPH01303757A
公开(公告)日：1989-12-07
申请号：JP13271588
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： G09G3/28 , H01L21/339 , H01L29/76 , H01L29/762 , H04N3/14 , H04N5/335 , H04N5/341 , H04N5/372 , H04N5/376
摘要： PURPOSE:To reduce power consumption in a circuit enabling drive on rectangular waves by a method wherein an inductance element is connected across driving terminals, a first switching circuit is provided between a driving voltage source and a driving terminal, and a second switching circuit is inserted in series with the inductance element. CONSTITUTION:Between a charge-coupled device (CCD) driving terminal and a driving voltage source, a first switching circuit is inserted and, in series with an inductance element arranged between driving terminals or between a driving terminal and a semiconductor substrate, a second switching circuit is inserted. The rise and fall of the driving terminal voltage is effected on a low voltage by utilizing LC resonance and, after a change in the terminal voltage, the terminals are connected to the driving voltage source for the sustenance of a constant voltage. Using this design, an approximately rectangular driving voltage may be applied to the CCD driving terminals. With the inversion of the driving voltage being accomplished on the strength of LC oscillation, the CCD driving power may be kept low.

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