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1. 发明专利

JPS55117275A SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPS55117275A
公开(公告)日：1980-09-09
申请号：JP2443079
申请日：1979-03-05
申请人： HITACHI LTD , HITACHI HARAMACHI DENSHI KOGYO
发明人： TAKAHASHI KATSUMI , TAKITA JIYUNICHI , NAKASHIMA YOUICHI , AKABANE KATSUMI , SUZUKI TAKASHI , YAMAMOTO SHIGERU
IPC分类号： H01L29/74 , H01L29/08 , H01L29/10
摘要： PURPOSE:To equalize the speed expanding in conducting area in a semiconductor device at high frequency operating time by inclining the n-type emitter layer and reducing the thickness of a p-type base layer thinner at the farther position from the gate. CONSTITUTION:After P-type is diffused on both surface of an N-type substrate 5 to form a PUP junction thereon. the P-type layer 3 is mechanically and chemically polished to incline the main surface thereof. Then, the N-type emitter layer 3 is diffused to form an emitter electrode 2, and a gate electrode 1 is formed on thick side on the P-type base layer 4. Since the P-type base layer 4 is thinner at the farther position from the gate, it can increase the arc sensitivity of infinitesimal SCR at the point, and increase the lateral resistance of the base layer 4 more at the farther position from the gate 1 and decrease the longitudinal resistance thereof. Accordingly, the voltage applies to the infinitesimal SCR at the farther position becomes higher to aid the arcing. Thus, the expanding speed is remarkably equalized on the entire surface of the PN junction as compared with the conventional device.

2. 发明专利

JPS61293173A POWER SOURCE 失效
公开(公告)号：JPS61293173A
公开(公告)日：1986-12-23
申请号：JP13415385
申请日：1985-06-21
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： MASUKO YASUHIRO , YAMAMOTO SHIGERU
IPC分类号： H02M7/06
摘要： PURPOSE:To reduce a leakage current which flows to a power source and a ground in a closed circuit by providing a circuit for reducing the leakage current between the output unit negative potential side of the power source and the ground of the output unit. CONSTITUTION:A power source has an input side rectifier 4, a drive circuit 5, power converters 7, 8 and a leakage current reducing circuit 50. The reducing circuit 50 has a capacitor 10 and resistors 11, 12, and is provided between the output unit negative potential side of the power source and the ground of the output unit. The power of the secondary side coil 30 of a power converter 5 is converted into a DC by the converters 7, 8, and supplied to an arbitrary load.

3. 发明专利

JPS61235956A EVENT RECORDING SYSTEM 失效
公开(公告)号：JPS61235956A
公开(公告)日：1986-10-21
申请号：JP7644285
申请日：1985-04-12
申请人： HITACHI LTD
发明人： OKUDA TETSUYA , SATO TADASHI , YAMAMOTO SHIGERU
IPC分类号： G06F11/34 , G06F13/00
摘要： PURPOSE:To facilitate operation analysis of a faulty device by selecting a specific device to apply event recording and applying event recording in a timing proper to a recorded event. CONSTITUTION:When a channel for event recording is designated from a service processor 13 or a microprocessor 20, an event applying event recording is selected by the low-order 4-bit of a control word in a register 3 and the result is outputted via a signal line 17. On the other hand, a trigger generating condition is selected by the high-order 2-bit of the control word in the register 3 and the circuit 12 generates a trigger signal and outputs it in the corresponding timing. A register 15 corresponding to the channel is made enable by using a trigger signal and a channel selection signal obtained by encoding the value of a register 21 and after the signal of the event sent via the signal line 17 is latched to the register 15, the result is stored in an event recording area of a storage device 19 via the signal line 18.

4. 发明专利

JPS53978A MEASURING METHOD FOR TURNOFF CHARACTERISTICS 失效
公开(公告)号：JPS53978A
公开(公告)日：1978-01-07
申请号：JP7430476
申请日：1976-06-25
申请人： HITACHI LTD
发明人： HIDAKA TOSHIYUKI , YAMAMOTO SHIGERU
IPC分类号： G01R31/26
摘要： PURPOSE:To re-fire the GTO (gate turnoff) thyristor just upon the failure of a turnoff so as to avoid the concentration of current and again carry out the turnoff at more gate current to prevent destruction of an element wherebb the GTO is stored to a normal state.

5. 发明专利

JPS5284958A PREVENTING DESTRUCTION OF REVERSE CONDUCTING THYRISTOR 失效
公开(公告)号：JPS5284958A
公开(公告)日：1977-07-14
申请号：JP85276
申请日：1976-01-07
申请人： HITACHI LTD
发明人： YAMAMOTO SHIGERU
IPC分类号： H02H7/12 , H02M1/32
摘要： PURPOSE:To prevent destruction of a reverse conducting thyristor due to commutation by detecting firing characteristic to a reverse conducting thyristor through resistance between the anode and cathode and discharge current of the capacitor and firing adding to the gate of the auxiliary thyristor.

6. 发明专利

JPH02126352A DATA TRANSFER CONTROL SYSTEM FOR INFORMATION PROCESSOR 失效
公开(公告)号：JPH02126352A
公开(公告)日：1990-05-15
申请号：JP28091488
申请日：1988-11-07
申请人： HITACHI LTD
发明人： YAMASHITA MASAHIRO , SATO TADASHI , YAMAMOTO SHIGERU
IPC分类号： G06F13/12
摘要： PURPOSE:To quickly start the execution of a data transfer microprogram and to improve the throughput of a data transfer by making the value of a starting pointer larger than the value of an end pointer when an error is detected. CONSTITUTION:At a channel control part 200, a starting pointer generating circuit 205 and an end pointer generating circuit 206 are provided. When the error of a starting pointer 202 or an end pointer 203 received from a channel device 100 is detected by an error detecting circuit 204, generation and output are executed so that the value of the pointer 202 is larger than the value of the pointer 203. Thus, when at a storing control part 300, the value of a pointer 301 received from the control part 200 is larger than the value of a pointer 302, the instruction that the byte to be written is absent is issued and the data transfer is executed. Consequently, since a data transfer microprogram can quickly start the execution without writing the data to the erroneous address of a memory 500, the throughput of the data transfer can be improved.

7. 发明专利

JPH01166153A STEAL CONTROL SYSTEM 失效
公开(公告)号：JPH01166153A
公开(公告)日：1989-06-30
申请号：JP32392187
申请日：1987-12-23
申请人： HITACHI LTD
发明人： YAMASHITA MASAHIRO , SATO TADASHI , YAMAMOTO SHIGERU
IPC分类号： G06F13/12
摘要： PURPOSE:To improve throughput by deciding, branching and executing a next steal request by steal microprograms when a steal request by the data transfer of another channel is generated while executing the steal microprograms. CONSTITUTION:The data transfer request of a channel 8 is inputted to a channel selecting circuit 7, a steal request FF5 is set and a command being executed at a channel 8 is set to a command register 6. A steal control circuit 3 sends a steal signal to a CS address control circuit 1, interrupts microprograms 201-205 being executed and branches them into microprograms 210-215. When the data transfer request of a channel 9 is inputted to the channel selecting circuit 7 while executing steal microprograms 210-213, the steal request FF5 is set and the command of the channel 9 is set to the command register 6. The steal request FF5 and the command register 6 are inputted to a test circuit 2.

8. 发明专利

JPH01137352A CHANNEL CONTROL SYSTEM 失效
公开(公告)号：JPH01137352A
公开(公告)日：1989-05-30
申请号：JP29664287
申请日：1987-11-25
申请人： HITACHI LTD
发明人： SATO TADASHI , YAMASHITA MASAHIRO , YAMAMOTO SHIGERU , SASAKI AKIO
IPC分类号： G06F9/445 , G06F13/12 , G06F15/177
摘要： PURPOSE:To perform a loading control and the correction of errors at high speed by securing such a constitution where a service processor SVP starts a controller after loading a microprogram into the controller and the controller loads the microprogram and the constitution control information. CONSTITUTION:At the initialization of a channel control system, an SVP loads a microprogram into a controller 1 and starts the microprogram. Then, the SVP stores its holding microprogram and constitution control information on the channel devices 4 into the prescribed area of a main memory part 2. Furthermore, the SVP loads the constitution control information and the microprogram into the devices 4 under the control of the microprogram of the controller 1. Thus, the controller 1 containing a microprocessor which is capable of the high-speed processing can load the microprogram and the constitution control information into each device 4. As a result, the loading control, the error corresponding jobs, etc., can be performed at extremely high speed.

9. 发明专利

JPS6278647A TEST METHOD FOR CHANNEL FAULT PROCESSING 失效
公开(公告)号：JPS6278647A
公开(公告)日：1987-04-10
申请号：JP21890185
申请日：1985-10-01
申请人： HITACHI LTD
发明人： YAMAMOTO SHIGERU , OKUDA TETSUYA
IPC分类号： G06F11/22 , G06F13/00
摘要： PURPOSE:To attain a processing function test against the fault on an interface by providing a means to a channel to return a tag/bus-out signal in the form of a tag/bus-in signal together with a fault generating register and controlling the tag/bus-out signal and the fault generating register in a prescribed order. CONSTITUTION:For a channel 4 undergoing a fault processing test, the fault indicating information on a channel control program 21 of a channel control part 5 is read out at an optional time point. Thus the faults are produced to the tag/bus-out signals 16 and 18. Then the tag/bus-in return signals 22 and 23 are obtained by a return-only indicating signal 15. Thus these signals 22 and 23 having the fault factors can be received via its own channel. Thus it is possible to perform a processing function test to a fault produced on an I/O interface.

10. 发明专利

JPH0426500B2 失效
公开(公告)号：JPH0426500B2
公开(公告)日：1992-05-07
申请号：JP21890185
申请日：1985-10-01
申请人： HITACHI LTD
发明人： YAMAMOTO SHIGERU , OKUDA TETSUYA
IPC分类号： G06F11/22 , G06F13/00

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