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51. 发明专利

JP2002186185A POWER FLOW CONTROL DEVICE 审中-公开
公开(公告)号：JP2002186185A
公开(公告)日：2002-06-28
申请号：JP2001368061
申请日：2001-12-03
申请人： HITACHI LTD
发明人： KIDA JUNZO , ARITA HIROSHI , KONDO SHINICHI
IPC分类号： H02J3/18
摘要： PROBLEM TO BE SOLVED: To enhance stability by installing a semiconductor switch as close to the ground as possible relating to a power flow control device that controls the amount of a series reactance by a semiconductor switch, and especially relating to the power flow control device wherein a potential of the semiconductor switch is made lower than that of a power transmission system. SOLUTION: A transformer is placed between a transmission line and the ground. The semiconductor switch is connected to the winding of the transformer, to reduce the potential applied to the semiconductor switch to a value equal to or lower than the ground potential of the transmission line.

52. 发明专利

JPH0575415B2 失效
公开(公告)号：JPH0575415B2
公开(公告)日：1993-10-20
申请号：JP22419783
申请日：1983-11-30
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： KONDO SHINICHI , OGAWA TOSHIO , UMEMURA SHINICHIRO , KATAKURA KAGEYOSHI
IPC分类号： A61B8/14 , A61B8/00 , G01N29/06

53. 发明专利

JPH04297243A ULTRASONIC DIAGNOSTIC SYSTEM 失效
公开(公告)号：JPH04297243A
公开(公告)日：1992-10-21
申请号：JP6147391
申请日：1991-03-26
申请人： HITACHI LTD
发明人： SHINOMURA RYUICHI , KONDO SHINICHI , MASUZAWA YUTAKA
IPC分类号： A61B8/00 , G01N29/22 , G01N29/44
摘要： PURPOSE:To reduce a signal line when a driver is built thereinto in the system requiring a number of signal lines of a two-dimensional array probe or the like by arranging a signal line of a timing pulse for driving a driver to serve as also a signal line of received signals from a vibrator. CONSTITUTION:A pulse corresponding to the number (m) of the maximum diameter from a transmission timing pulse generator 1 is inputted into a driver 3 of a transmitting/receiving section 10 through two analog switches 2 and 2'. Then, a vibrator drive pulse is outputted with the driver 3 to be applied to a desired vibrator 6 from a high voltage withstand analog switch 5 passing through a transmitting/receiving separation circuit 4. On the other hand, a signal received with a vibrator 6 is passed through a signal line 13 of a transmission timing pulse after inputted into the analog switch 2' passing the high voltage withstand analog switch 5 and the transmitting/receiving separation circuit 4. Then, the signal is introduced to a receiving circuit 7 with the analog switch 2 while processed with a signal processing section 8 to display an image on a monitor 9.

54. 发明专利

JPH0454458B2 失效
公开(公告)号：JPH0454458B2
公开(公告)日：1992-08-31
申请号：JP20743283
申请日：1983-11-07
申请人： HITACHI LTD
发明人： KONDO SHINICHI , NAKATANI CHITOSE
IPC分类号： A61B8/12 , A61B8/00

55. 发明专利

JPH04238533A COMPUTING ELEMENT USING PIPELINE CONTROL METHOD 失效
公开(公告)号：JPH04238533A
公开(公告)日：1992-08-26
申请号：JP621791
申请日：1991-01-23
申请人： HITACHI LTD
发明人： ISHIKAWA SHIZUO , MIWA YUICHI , KATAKURA KAGEYOSHI , KANDA HIROSHI , KONDO SHINICHI
IPC分类号： G06F7/00 , G06F7/50 , G06F7/509 , G06F9/38 , G06T1/20
摘要： PURPOSE:To form a high-speed adder of slow device by using the technique of pipeline control by combining adders whose number of pieces is smaller than the number of input bits and latches. CONSTITUTION:The adder is constituted by multistage-connecting plural pieces of the adders 10-1, 10-2, 10-3 whose number of pieces is smaller than the number pf pieces of the input bits and plural pieces of the latches 12-1 to 12-3, 13-1 to 13-3, 14-1 to 14-3. Though there is clock delay, continuous and high-speed addition is realized.

56. 发明专利

JPH01145043A ULTRASONIC DIAGNOSTIC APPARATUS 失效
公开(公告)号：JPH01145043A
公开(公告)日：1989-06-07
申请号：JP30311987
申请日：1987-12-02
申请人： HITACHI LTD
发明人： KONDO SHINICHI , KATAKURA KAGEYOSHI , OGAWA TOSHIO
IPC分类号： A61B8/00
摘要： PURPOSE:To accurately display the blood flow at a point of notice, by performing two-dimensional color Doppler on a tomographic surface containing the three-dimensional blood flow vector at the point of notice. CONSTITUTION:The pulse from an oscillator 12 is given to a two-dimensional array vibrator 10 through a three-dimensional focusing means 13 and a transmitting-receiving circuit 11. The reflected wave from an arbitrary point is received by the two-dimensional array vibrator 10 and the output thereof is sent to the display part on and after a DSC 20 through a three-dimensional focusing means 14, an adder 15 and a detector 16. The output of the adder 15 is sent to a Doppler deflection detecting means 18 and the Doppler deflection output is sent to a three-dimensional blood flow vector/dispersion/power operation circuit 19. The three-dimensional blood flow vector of a noticeable point calculated by said operation circuit 19 is sent to a tomographic surface three- dimensional display and operation circuit 26 to be displayed on a three- dimensional display CRT 27.

57. 发明专利

JPS62121352A ULTRASONIC IMAGE PICKUP DEVICE 失效
公开(公告)号：JPS62121352A
公开(公告)日：1987-06-02
申请号：JP26122185
申请日：1985-11-22
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： IKEDA HIROSHI , KATAKURA KAGEYOSHI , OGAWA TOSHIO , UMEMURA SHINICHIRO , KONDO SHINICHI
IPC分类号： G01S7/523 , A61B8/00 , A61B8/14 , G01N29/06 , G01N29/22 , G01N29/44 , G01S7/52
摘要： PURPOSE:To realize the larger wave receiving diameter without expanding the scale of a phase matching circuit by symmetrically adding and synthesizing the signals obtd. by the wave receiving apertures divided by 2n+1(n>=1) while maintaining the phase information thereof. CONSTITUTION:Arrayed oscillators 1, a transmission-reception selector 2, a transmission driving circuit 3, a symmetrical adder 4, a phase receiving phase matching device 65, a transmission control circuit 6, a line data adder 7 and a line memory 8, etc. are provided. The selector 2 is selected by the circuit 6 to the wave transmission; at the same time, the transmitting bore from the oscillator 1 is selected and further the wave transmission is executed by the circuit 3. On the other hand, the selector 2 is selected to the wave reception by the circuit 6 and the divided receiving bore is selected. The resultant reception signal is inputted via the adder 4 to the phase matching device 5 and is memorized 8 via the adder 7. The two divided bores symmetrical with each other are selected and the wave reception is executed for the subsequent wave reception. The signals successively added by as much as the number of synthesis of the reception signal is passed through a compressing circuit 9 and a detecting circuit 10 and is displayed 11. The wave receiving bore is thus made larger.

58. 发明专利

JPH0974681A POWER FLOW CONTROLLER 失效
公开(公告)号：JPH0974681A
公开(公告)日：1997-03-18
申请号：JP18880195
申请日：1995-07-25
申请人： HITACHI LTD
发明人： KIDA JUNZO , ARITA HIROSHI , KONDO SHINICHI
IPC分类号： H02J3/16 , H02J3/18 , H02J3/20
摘要： PROBLEM TO BE SOLVED: To compensate the reactance state of a power system over a wide range by connecting a first winding having at least one Y-connection in series with a second winding which is combined with the first winding and providing a means which compensates the power transmitting state of the power system. SOLUTION: A power flow controller 10 is constituted of a serial compensator 11 which serially compensates a power system by causing a voltage of a leading phase to a line current, a main transformer 12, which adjusts phases, an adjusting transformer 13 which generates a voltage for adjusting the phase of the voltage generated by the transformer 12, and their control circuit 200. The compensator 11 is arranged between a terminal 14a and a neutral point 14 in each phase of Y-connection windings in the transformer 12. Therefore, the serial reactances of transmission lines, transformers, etc., can be compensated by means of the compensation capacitor of the compensator 11 and the transmission capacity of the power system can be increased and the system can be stabilized by the serial compensation.

59. 发明专利

JPH04194771A PROCESSOR FOR ULTRASONIC SIGNAL 失效
公开(公告)号：JPH04194771A
公开(公告)日：1992-07-14
申请号：JP32316690
申请日：1990-11-28
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： KATAKURA KAGEYOSHI , OGAWA TOSHIO , KONDO SHINICHI
IPC分类号： G01N29/44 , A61B8/00 , G01N29/22 , G01S7/526 , G01S15/89
摘要： PURPOSE:To prevent the deterioration of waveform and moderate a requirement pertaining to the frequency characteristic of a quantize delay element by making a mixing process after operations for little delays. CONSTITUTION:Signals Un(t) received from several elements are delayed by fn(t) in a little delay circuit SD, and then, mixed with a reference signal h(t) in a mixer M. Low-frequency components gn(t) generated by that mixing are made phase shifts in a phase shifter PS, respectively delayed in a quantize delay circuit QD, and added in an adder AD. So, by the means that phases of the output of the mixer M are rotated by phase quantity of an L sort by the phase shifter PS, all the signals become perfectly the same waveform because agrees in both the sides of an envelope shape and phase. Therefore, the frequency omega''(t) which is the added result grows up large by adding without receiving a change of the envelope shape. Thus, the constitution of the circuit QD becomes simple without deterioration of the waveform.

60. 发明专利

JPH04194769A PROCESSOR FOR ULTRASONIC SIGNAL 失效
公开(公告)号：JPH04194769A
公开(公告)日：1992-07-14
申请号：JP32316490
申请日：1990-11-28
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： KATAKURA KAGEYOSHI , OGAWA TOSHIO , KONDO SHINICHI
IPC分类号： G01N29/44 , A61B8/00 , G01N29/22 , G01S7/526 , G01S15/89
摘要： PURPOSE:To make the constitution of a mixing element simple, moderate a requirement also pertaining to the frequency characteristic of a main delay element and also make the constitution of this portion simple by making the process to mix with a reference signal of the same phase after respective operations for little delays. CONSTITUTION:Transmitting signals are applied from a circuit for transmission to a part of elements TRN and ultrasonic pulses are transmitted to a target. The reflected acoustic waves generated by this are detected in respective elements TRN. Several received signals are respectively mixed with a common reference signal from a reference signal generator RG in a mixing element M after receiving respectively delays in a little delay circuit SD. Low-frequency components generated by mixing receive the specific phase shifts respectively in a phase shifter PS, thereafter, receive delays respectively in a quantize delay circuit MD, and become the received signals omegan(t) added and phased by an adder AD. Thus, the constitution of the circuit MD becomes simple. The constitution of the mixing element M also becomes sharply simple because the reference signal is common to all signals.

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