公开(公告)号：JPH04372875A

公开(公告)日：1992-12-25

申请号：JP15030291

申请日：1991-06-21

Applicant: ADVANTEST CORP

Inventor： KITAYOSHI HITOSHI ,  SAITOU CHIEZOU

IPC: G01R27/02

Abstract: PURPOSE:To reduce the load of a microprocessor and to shorten a measuring unit time by mounting a sequence controller controlling measurement. CONSTITUTION:A microprocessor (MP) supplies a defined command to a sequence controller (SC) to start measurement. The SC responds to the supplied command to operate an integrating section control circuit and an ADC in defined order. The ADC transmits the completion of A/D conversion to the MP as an interruption signal and the MP stores the data subjected to A/D conversion in the corresponding memory of the AD/ID outputted from the SC and transmits the completion of the taking-in of data to the SC. The SC confirms the completion of the taking-in of data of the previous time by the MP at the time of the completion of integration to start the next A/D conversion. As mentioned above, the control of measurement is entrusted to the SC and the MP issues a command for the SC to start measurement to perform the operation of the measured value of the previous time or the processing or display of data. As a result, a measuring unit time can be shortened.

公开(公告)号：JPH11183535A

公开(公告)日：1999-07-09

申请号：JP35517597

申请日：1997-12-24

Applicant: ADVANTEST CORP

Inventor： FUJISAKI HIRONORI ,  ABIKO NORIHIDE ,  SAITOU CHIEZOU ,  UBUKATA KEIICHI ,  KIMURA NAOYA

IPC: G01R27/28

Abstract: PROBLEM TO BE SOLVED: To measure the S-parameter of a four port device, without changing cable connection in the middle of measurement, by performing switchover of two switches of a four port test set, by the control signals of a network analyzer. SOLUTION: A four port test set 20 is composed of switches SW1 , SW2 , and a control unit 21, and the control unit 21 receives control signals from a network analyzer 10 and performs switchover of the switches SW1 , SW2 respectively. And a signal from a port P1 of the analyzer 10 is switched over to a port P4 or port P5 by the switch SW1 , and a signal from a port P2 is switched over to a port P3 or port P6 . Consequently, it becomes possible to measure the S parameter of a four port device 30, without changing cable connections in the middle of measurement, since a section between each port P3 -P6 of the test set 20 and each measuring terminal Rx , A1 , A2 , Tx of the four port device 30 is all connected with a cable respectively. Accordingly, throughputs of measurement increase.

公开(公告)号：JPH076056A

公开(公告)日：1995-01-10

申请号：JP17270093

申请日：1993-06-18

Applicant: ADVANTEST CORP

Inventor： ARAKAWA NORIO ,  SAITOU CHIEZOU

IPC: G06F9/06 ,  G06F9/46 ,  G06F9/48 ,  G06F11/28

Abstract: PURPOSE:To efficiently inspect whether application software is actualized according to specifications without impairing reliability while a process is executed in an ideal state on a system which uses an OS of a real-time processing system. CONSTITUTION:On the system which uses the OS of the real-time processing system, the units of processes are tasks. For the processes execution of a task, the treaty to be satisfied the both of 'preconditions' for the process which should be satisfied in advance and 'postconditions' which should be guaranteed when the process ends under the conditions is prescribed as a precondition. Then messages are transferred to a separately provided inspecting device, process by process, and compared and matched with 'standards of preconditions and postconditions' which are registered there to perform the inspection simultaneously in parallel.

公开(公告)号：JP2003066099A

公开(公告)日：2003-03-05

申请号：JP2001253183

申请日：2001-08-23

Applicant: Advantest Corp ,  株式会社アドバンテスト

Inventor： SAKURAI RYUICHI ,  KASAHARA TOSHIHARU ,  SAITOU CHIEZOU

IPC: G01R31/28 ,  G01R31/319

CPC classification number: G01R31/31919 ,  G01R31/28

Abstract: PROBLEM TO BE SOLVED: To reduce noise of measurement data exchanged by a measurement module.
SOLUTION: A measurement control part 10 controls circuits 50a and b to be measured, and it acquires measurement data from the circuits 50a and b to be measured. A CPU 20 controls the measurement control part 10 via a bus 40. Since the CPU 20 does not directly control circuits 50a and b to be measured, no measurement data is exchanged between the CPU 20 and the measurement control part 10. Consequently, since a control signal or the like transmitted via the bus 40 is not mixed in the measurement data and the control signal or the like sent from the CPU 20 does not become noise, the noise of the measurement data is reduced.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：减少由测量模块交换的测量数据的噪声。 解决方案：测量控制部件10控制要测量的电路50a和b，并且从测量的电路50a和b获取测量数据。 CPU20经由总线40控制测量控制部分10.由于CPU 20不直接控制电路50a和b被测量，所以在CPU 20和测量控制部分10之间没有交换测量数据。因此，由于 经由总线40发送的控制信号等不在测量数据中混合，并且从CPU 20发送的控制信号等不会变得噪声，所以测量数据的噪声降低。

公开(公告)号：JPH11183656A

公开(公告)日：1999-07-09

申请号：JP35781797

申请日：1997-12-25

Applicant: ADVANTEST CORP

Inventor： ARAKAWA NORIO ,  SAITOU CHIEZOU

IPC: G04F10/00 ,  G04G99/00 ,  G04G1/00

Abstract: PROBLEM TO BE SOLVED: To provide a method by which the actual operating time of a measuring instrument can be measured, by utilizing conventional hardware configuration even when no additional parts are used for integrating the operating time. SOLUTION: An actual operating time of a measuring instrument provided with a CPU 20 which performs operation and control, an RTC 30 which is backed up by means of a backup battery and outputs time data, a RAM 40 which is backed up by means of the backup battery, and a memory 50 which stores programs until the last time is integrated by storing the last turning-on time of a power source, the integrated actual operating time of the instrument until the last time but one, and the last turning-off time of the power source.

公开(公告)号：JPH1031611A

公开(公告)日：1998-02-03

申请号：JP20433596

申请日：1996-07-15

Applicant: ADVANTEST CORP

Inventor： SAITOU CHIEZOU

IPC: G11C17/00 ,  G06F12/00 ,  G11C16/02 ,  G11C16/06

Abstract: PROBLEM TO BE SOLVED: To delay the time when a memory block becomes faulty and also to eliminate spare area to maximize the available capacity of a storage by searching information of a least write frequency out of those unused information and writing a relevant memory block. SOLUTION: A write request, a sector number 90sec and user write data 79wdat are received from a host interface, and the logical block number that is obtained by searching the information of the least write frequency out of those unused information of a using frequency list 40 is written. In regard to the write contents, the block header part information is added to the data 79wdat and the normal CRC code value is written. In this case, the addition updating value obtained by adding 1 to the preceding value is stored in regard to the write frequency data. These updating information are updated in the same way also in the list 40 of a RAM. At this point of time, the old data of the same sector number 90sec are not erased yet and therefore stored as they are.