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1. 发明专利

JPH07135455A PEAK LEVEL OR BOTTOM LEVEL DETECTOR 失效
公开(公告)号：JPH07135455A
公开(公告)日：1995-05-23
申请号：JP27959093
申请日：1993-11-09
申请人： HAMAMATSU PHOTONICS KK , HITACHI LTD
发明人： SUZUKI TAKAYUKI , KYOMASU MIKIO , YAMASHITA KIICHI , HASEGAWA ATSUSHI , HASEGAWA YUTAKA , HAMAGISHI TAKAHIRO
IPC分类号： H03K5/1532
摘要： PURPOSE:To obtain a peak or bottom level detector in which a peak level or a bottom level of an input signal is detected at a high speed and a detected output is kept for a long time. CONSTITUTION:A 1st peak detection circuit A detects a peak level at a high speed and the storage time of the charge stored in a capacitor CA is short. A 2nd peak detection circuit B has a somewhat slow operating speed and the storage time of the charge stored in a capacitor CB is long. The arithmetic operation circuit C takes the sum of detection outputs of the circuits A, B. Furthermore, a very small current source circuit D extracts very small currents from the capacitors CA, CB and a discharge time constant of the charge stored in the capacitors CA, CB is controlled. A peak level or a bottom level outputted from the arithmetic operation circuit C are provided as an output at a high speed by the circuit A and kept for a long time by the circuits B, D.

2. 发明专利

JPH07193437A GAIN SWITCHING OPTICAL RECEIVER AMPLIFIER CIRCUIT 失效
公开(公告)号：JPH07193437A
公开(公告)日：1995-07-28
申请号：JP33300493
申请日：1993-12-27
申请人： HITACHI LTD , HAMAMATSU PHOTONICS KK
发明人： HASEGAWA ATSUSHI , YAMASHITA KIICHI , HASEGAWA YUTAKA , HAMAGISHI TAKAHIRO , KYOMASU MIKIO , SUZUKI TAKAYUKI
IPC分类号： H03F3/08 , H03G3/30 , H04B10/07 , H04B10/2507 , H04B10/293 , H04B10/40 , H04B10/50 , H04B10/564 , H04B10/572 , H04B10/60 , H04B10/69 , H04L25/03 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/26 , H04B10/28
摘要： PURPOSE:To output DC voltage at the time of a right input without light by operating as an amplifier when an incident light level is small and operating by lowering the gain and widening a light receiving dynamic range when the incidnet light level is large. CONSTITUTION:A differential amplfier 20 defines the output of a circuit by an inversion amplifier 3 and a gain switching circuit 22 as a positive input and defines the output of a reference voltage generation source circuit 24 by the inversion amplifier 10 and the gain switching circuit 23 having the same constitution as a negative input. Therefore, the amplifier 20 does not fluctuate DC voltage outputted at the time of an input without light before and after the switching of the gain of the inversion amplifiers 3 and 10. A gain switching control circuit 15 is composed of transistors 16 to 18, a current source 19 and a voltage source having set voltage V 1. When an input signal Vc 1 is higher than the set voltage V 1, the transistors 16 and 17 are turned off and current does not flow to the gain switching circuits 22 and 23 and diodes 7 and 15. As a result, a switching is performed so that the gain of the inversion amplifiers 3 and 10 may be increased.

3. 发明专利

JPH07131488A DRIVING CIRCUIT FOR LIGHT EMITTING ELEMENT 失效
公开(公告)号：JPH07131488A
公开(公告)日：1995-05-19
申请号：JP27073193
申请日：1993-10-28
申请人： HAMAMATSU PHOTONICS KK , HITACHI LTD
发明人： SUZUKI TAKAYUKI , KYOMASU MIKIO , YAMASHITA KIICHI , HASEGAWA ATSUSHI , HASEGAWA YUTAKA , HAMAGISHI TAKAHIRO
IPC分类号： H04B10/40 , H04B10/50 , H04B10/524 , H04B10/60 , H04B10/80 , H04L25/02 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/26 , H04B10/28
摘要： PURPOSE:To provide the driving circuit for light emitting elements which can drives a light emitting element at a high speed and facilitates light emission output control. CONSTITUTION:When a transistor(TR) QA1 turns off to stop supplying a current to the light emitting element D1, a TR QA3 connected to the light emitting element D1 in parallel turns on and the terminals of the light emitting element D1 is short-circuited. Therefore, when the light emitting element D1 lights out, electric charges accumulated in the parasitic capacitance of the light emitting element D1 are rapidly discharged. Further, when the TR QA1 turns on to start supplying the current to the light emitting element D1, a TR QA1 turns on at the same time and a current signal D having a peak at the time of its rise flows to the light emitting element D1. Therefore, when the light emitting element D1 illuminates, the capacitance C1 parasitic to the light emitting element D1 is speedily charged with the peak component at the time of the rise of the current signal D.

4. 发明专利

JP2006065323A Liquid crystal display device 有权
标题翻译：液晶显示装置
公开(公告)号：JP2006065323A
公开(公告)日：2006-03-09
申请号：JP2005229053
申请日：2005-08-08
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ASUMA HIROAKI , HASEGAWA ATSUSHI
IPC分类号： G02F1/1368 , G09G3/20 , G09G3/36 , H01L21/8242 , H01L27/108 , H01L29/786
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display device with small power consumption, to provide a liquid crystal display device in which a leaked current generating in a thin film transistor constituting a dynamic memory in an image signal driving circuit is suppressed, and to provide a liquid crystal display device in which the dynamic memory in the image signal driving circuit is normally operated. SOLUTION: A display region as an ensemble of pixel regions is segmented into one display region and the other display region by a virtual line as a border along the x direction. A scan signal driving circuit to supply a scan signal to each gate signal line in the one display region, and a scan signal driving circuit to supply a scan signal to each gate signal line in the other display region are separately fabricated. Drain signal lines in the one display region are separated from drain signal lines in the other display region. An image signal driving circuit to supply an image signal to each drain signal line in the one display region and an image signal driving circuit to supply an image signal to each drain signal line in the other display region are separately fabricated. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：为了提供一种具有小功耗的液晶显示装置，提供一种液晶显示装置，其中在图像信号驱动电路中构成动态存储器的薄膜晶体管中产生的泄漏电流被抑制并且提供其中图像信号驱动电路中的动态存储器正常工作的液晶显示装置。解决方案：作为像素区域的整体的显示区域被分割为一个显示区域，另一个显示区域通过虚拟线分割为沿x方向的边界。分别制造用于向一个显示区域中的每个栅极信号线提供扫描信号的扫描信号驱动电路和向另一个显示区域中的每个栅极信号线提供扫描信号的扫描信号驱动电路。一个显示区域中的漏极信号线与另一个显示区域中的漏极信号线分离。分别制造用于向一个显示区域中的每个漏极信号线提供图像信号的图像信号驱动电路和用于向另一个显示区域中的每个漏极信号线提供图像信号的图像信号驱动电路。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2004348309A Sales store flow control system 有权
公开(公告)号：JP2004348309A
公开(公告)日：2004-12-09
申请号：JP2003142839
申请日：2003-05-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ABE MASAHIRO , SHOBATAKE HIROMASA , MORI YUICHI , SUMIYA YUJI , ITO AKITO , HASEGAWA ATSUSHI , ISHIKAWA AKIHISA
IPC分类号： G06Q50/10 , G06F17/00 , G06Q10/00 , G06Q10/06 , G06Q30/06 , G06Q40/00 , G06Q40/02 , G06Q50/00 , G06F17/60
CPC分类号： G06F9/5038
摘要： PROBLEM TO BE SOLVED: To facilitate countermeasures to the various tasks and store configurations of a sales store at low costs, and to easily customize an application accompanied with the change of a task flow. SOLUTION: A sales store flow control system is provided with a plurality of sales stores 102 which are respectively equipped with a plurality of terminals 111 to 115 and a plurality of financial devices 116 to 119 and an electronic computer center 103, and an AP server 131 in the electronic computer center is provided with a plurality of device system components 151 which instruct the control of the financial devices, a plurality of high order access components 152 for using various task systems 137 and a plurality of task system components 153 described as task logics and a component flow control part 144 which successively calls those components. The component flow control part successively calls the components according to the calling order of preliminarily defined component flow definition information so that the application of a sales store task can be realized at an AP server side. COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2003161937A LIQUID CRYSTAL DISPLAY DEVICE 审中-公开
公开(公告)号：JP2003161937A
公开(公告)日：2003-06-06
申请号：JP2001359523
申请日：2001-11-26
申请人： HITACHI LTD
发明人： NAGATA TETSUYA , MIYAZAWA TOSHIO , HASEGAWA ATSUSHI
IPC分类号： G02F1/1335 , G02F1/1343 , G02F1/1368 , G09F9/30
摘要： PROBLEM TO BE SOLVED: To adjust the balance of colors in a light reflection mode and a light transmission mode. SOLUTION: A color filter is provided in the pixel area of a surface at the side of liquid crystal of one substrate of each substrate disposed oppositely through the liquid crystal. The pixel area is divided into a light reflection region where a first pixel electrode functioning also as a reflective film is formed at a part of the lower layer of the color filter, and a light transmission region where a second light transmissive pixel electrode is formed at a portion of the upper layer at least except the above part. An opening is formed at part of the light reflection region of the color filter, and a contact part is formed at the opening part for connecting the first pixel electrode with the second pixel electrode. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2002131783A ACTIVE MATRIX TYPE DISPLAY DEVICE 审中-公开
公开(公告)号：JP2002131783A
公开(公告)日：2002-05-09
申请号：JP2001218144
申请日：2001-07-18
申请人： HITACHI LTD
发明人： HASEGAWA ATSUSHI
IPC分类号： G02F1/1368 , G02F1/1343 , G09F9/30 , G09F9/35 , H01L29/786
摘要： PROBLEM TO BE SOLVED: To improve a degree of integration of a gate signal line driving circuit or a drain signal line driving circuit. SOLUTION: A substrate of an active matrix type display device has a display area consisting of a set of a pixel area provided with 1st thin film transistors and a driving circuit forming area provided with 2nd thin film transistors outside of the pixel area; gate electrodes GT of the 1st thin film transistors are formed from a material different from that of gate signal lines GL and also part of the gate electrodes are directly and electrically connected with the gate signal lines; the gate electrodes of the 2nd thin film transistors are formed from a material different from a wiring layer or electrodes to be connected therewith and also part of them are directly overlapped with the wiring layer or electrodes for electric connection; and each gate electrode of the 1st thin film transistors and the 2nd thin film transistors is formed from the same material and also the electrodes of the gate signal lines and the wiring layer or electrodes are formed from the same material.

8. 发明专利

JP2001147852A SYSTEM AND METHOD FOR ACQUIRING FILE 失效
公开(公告)号：JP2001147852A
公开(公告)日：2001-05-29
申请号：JP33146399
申请日：1999-11-22
申请人： HITACHI LTD
发明人： BABA KENJI , SOMEYA HARUYUKI , TERAHAMA YUKINORI , MORI YUICHI , ABE MASAHIRO , HONMA HIROSHI , HASEGAWA ATSUSHI
IPC分类号： G06F12/00 , G06F13/00 , G06F15/173
摘要： PROBLEM TO BE SOLVED: To quickly acquire a file necessary for each client without newly setting a cache server in a network system in which a server is connected through a network with a plurality of clients, and files held by the server are downloaded by the clients as necessary. SOLUTION: Each client 2, 3, and 4 holds file holding information indicating files held by the other clients in file holding information storing parts 222, 322, and 422, and at the time of acquiring a certain file from a server 1, the client checks whether or not client holding the file is present by referring to the file holding information, and when a client holding the file is present, the client obtains the file from the client through a high speed network 6, and when no client holding the file is present, the client acquires the file from the server through a low speed network 5.

9. 发明专利

JP2001143003A METHOD FOR INPUTTING DATA AND DATA INPUT SYSTEM 失效
公开(公告)号：JP2001143003A
公开(公告)日：2001-05-25
申请号：JP32506499
申请日：1999-11-16
申请人： HITACHI LTD
发明人： MORI YUICHI , TERAHAMA YUKINORI , HASEGAWA ATSUSHI
IPC分类号： G06F19/00 , G06Q10/10 , G06Q40/00 , G06Q40/02
摘要： PROBLEM TO BE SOLVED: To reduce user's handwriting load. SOLUTION: A data input processing terminal 100 optically reads out a document obtained by writing a correcting position expression and corrected contents only in a part of information already printed out on a certain document by a user by using a scanner 300, inspects the validity of a depressed seal image, and when the seal image is valid, generates data for a position having no correcting position expression, by recognizing the printed contents and generates data having correcting position expression through recognition of the written corrected contents. If necessary, the terminal 100 updates a customer data base 400 and a transaction data base 500 on the basis of the corrected contents.

10. 发明专利

JPH11239105A OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION SYSTEM USING IT 失效
公开(公告)号：JPH11239105A
公开(公告)日：1999-08-31
申请号：JP3864298
申请日：1998-02-20
申请人： HITACHI LTD , HITACHI COMMUNICATION SYSTEM
发明人： TOKITA SHIGERU , HASEGAWA ATSUSHI , HAMAGISHI TAKAHIRO
IPC分类号： H04B10/27 , H04B10/07 , H04B10/2507 , H04B10/272 , H04B10/293 , H04B10/54 , H04B10/564 , H04B10/572 , H04B10/14 , H04B10/04 , H04B10/06 , H04B10/20
摘要： PROBLEM TO BE SOLVED: To provide an optical transmitter which does not output optical signals in error when the power supply to the transmitter is turned on and off. SOLUTION: An optical transmitter is provided with a current source 1 which outputs a driving current having the magnitude corresponding to an inputted control signal, a light emitting element LD which generates an optical output signal upon receiving the driving current, a modulator 9 which controls the supply/breake of the driving current to the element LD, a power supply voltage discriminating circuit 3 which monitors the power supply voltage and detects that the power supply voltage is lower than a preset value, and a breake circuit 4 which outputs a control signal that stops the output of the driving current to the current source 1 when the circuit 3 detects that the power supply voltage is lower than the preset value.

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