公开(公告)号：JPH07162752A

公开(公告)日：1995-06-23

申请号：JP31024893

申请日：1993-12-10

Applicant: FUJITSU LTD

Inventor： NAGABUCHI KENJI ,  NAKAMURA OSAMU ,  NISHIHATA MAKOTO ,  SHITAMAE HIROKI ,  KAMATA MASAKI

IPC: G01J1/44 ,  H04N5/33

Abstract: PURPOSE:To make the output signal of an infrared ray electric charge transfer element proportional to incident light by performing a level decision as to whether infrared ray incident amount is saturated from data corresponding to one frame based on a threshold or not, reading electric charge injection ratio from preliminarily set data based on the level decision, imparting the ratio to a detector and correcting nonlinearity. CONSTITUTION:After an A/D conversion is performed for the signal outputted from a detector 1, the dispersion between picture elements is corrected in a correction circuit 3 and it is outputted, and the data corresponding to one frame is held in a memory 4. The data corresponding to one frame is compared with a threshold, a level decision is performed for the data and whether infrared ray incident amount is saturated or not is outputted in a saturation decision circuit 5. The decision result is delivered to a storage part 8, the set data of electric charge ratio is changed and this data is transmitted via a D/A converter 6 and electric charge injection amount is imparted to the detector 1 via a driver 7. Thus, the nonlinearity of the output generated by inputted infrared ray amount becomes possible to be restored to linearity.

公开(公告)号：JPH0636033A

公开(公告)日：1994-02-10

申请号：JP19119592

申请日：1992-07-20

Applicant: FUJITSU LTD

Inventor： NAKAMURA OSAMU ,  NISHIHATA MAKOTO ,  SHITAMAE HIROKI

IPC: G05D1/02 ,  G05D1/12 ,  G06K9/32 ,  G06T1/00 ,  G06T7/00 ,  G06T7/20 ,  G06F15/70 ,  G06F15/62 ,  G06F15/64

Abstract: PURPOSE:To develop the automatic target detecting method which automatically detects a target by using a multi-pixel image sensor. CONSTITUTION:In this method, a CPU detects the target by performing necessary processes for respective screens of the image signal 2 generated by digitizing an image signal 1 preprocessed by a spatial filter with the sense signal of the multi-pixel sensor, by binarization 10 based upon a specific level threshold value ThL, the CPU detects the target with the output 4 obtained by performing local space correlation processing 20 wherein local areas of partial areas consisting of plural pixels are obtained by the screens, the signals of the respective pixels in the respective local areas are integrated 21 while the respective screens are scanned 24, and the integration result is binarized 22 on the basis of another threshold value ThP to substitute the result for a pixel signal representing the areas and frame time correlation processing 30 wherein the pixel signal 3 representing the local areas is inputted, pixel signals at the same positions on the respective screens of plural successive frame switch are previously set 33 are integrated 31, and the integration result is further binarized 32 on the basis of another threshold value ThF.

公开(公告)号：JPH04129445A

公开(公告)日：1992-04-30

申请号：JP25127890

申请日：1990-09-20

Applicant: FUJITSU LTD

Inventor： NAKAMURA OSAMU

IPC: H04L12/42

Abstract: PURPOSE:To surely specify a transmission line with an error caused therein by generating and checking an error check code for specifying a transmission line for each node, adding the code to a frame and sending the resulting frame to a succeeding node. CONSTITUTION:An optional communication node 1i receives a frame from other communication node, a transfer medium access section 2i decodes the frame, transmission specifying error check code generation check sections 3i, 4i generate an error check code for specifying the transmission line from the frame. Then the check code is compared with an error check code for specifying the transmission line generated by an upperstream communication node, and when they are dissident, the occurrence of an error is recorded, and the error check code for specifying the transmission line generated by its own node 1i is added to the frame in place of the check code generated at the upperstream and the result is sent to a lowerstream communication node via an active system transmission line 5i and a standby system transmission line 6i. Thus, a transmission block in which an error of transmission line is caused is discriminated.

公开(公告)号：JPH0350658A

公开(公告)日：1991-03-05

申请号：JP18568889

申请日：1989-07-18

Applicant: FUJITSU LTD

Inventor： NAKAMURA OSAMU

IPC: G06F13/42

Abstract: PURPOSE:To eliminate a circuit selecting read data by reading data stored in a register by utilizing the fact that the output of a try state buffer in a bus driver enters the input-side of an input buffer. CONSTITUTION:A bus unit cell 121 is set to an output state (state where data can be transmitted by the try state buffer 123) and data input in a circuit connected to a bidirectional bus B2(not illustrated) is set to be invalid. Then, a bus unit cell 111 is set to be output state, and data input in the circuit connected to a bidirectional bus B1 (not illustrated) is set to be valid (enable state). Data inputted from the bidirectional bus B1 is assumed to be previously stored in a register 131. Data outputted from the register 131 by there setting is transmitted to the bidirectional bus B1 through the try state buffer 123 and an input buffer 125 in the bus unit cell 121 and a try state buffer 115 in the bus unit cell 111.

公开(公告)号：JPS646132B2

公开(公告)日：1989-02-02

申请号：JP12036580

申请日：1980-08-29

Applicant: FUJITSU LTD

Inventor： GOTO JUNJIRO ,  OKAMURA KOJI ,  NAKAMURA OSAMU ,  TSUKAMOTO MAKOTO

IPC: C03B37/00 ,  C03B37/018 ,  G02B6/00

公开(公告)号：JPS6222933B2

公开(公告)日：1987-05-20

申请号：JP11556480

申请日：1980-08-21

Applicant: FUJITSU LTD

Inventor： NAKAMURA OSAMU ,  TSUKAMOTO MAKOTO ,  GOTO JUNJIRO ,  OKAMURA KOJI

IPC: C03B37/018 ,  G02B6/00

公开(公告)号：JPS6292535A

公开(公告)日：1987-04-28

申请号：JP23176585

申请日：1985-10-17

Applicant: FUJITSU LTD

Inventor： NEGISHI HITOSHI ,  NAKAHARA YASUHIRO ,  NAKAMURA OSAMU ,  MITA AKIYOSHI ,  KITANO YOSHIHIRO

IPC: H04J3/14

Abstract: PURPOSE:To keep the operation of a stable data highway by switching a standby SV node into an active SV node when an SEQ (frame number part) unrevision is detected by the standby SV (communication equipment) node so as to execute the changeover of the equipment accurately and quickly. CONSTITUTION:Duplicated data highways are adopted for ring data transmission lines L0, L2, and the active SV (communication equipment) 2, the standby SV3 and nodes ND1-ND3 sending a data synchronously with the time assigned to each are connected to the transmission lines L0, L1. A network supervisory processor NSD1 is connected to the active SV2 and the standby SV3. Further, terminal equipments SS1-SS7 are connected to each of the nodes ND1-ND3 and the active/standby SV 2,3 respectively. Whether or not a frame number part SEQ in the frame 1 transferred to he highway is revised is detected by the processor NSD 1 and when not revised, the standby SV3 is switched into the active SV2 to keep the operation of the data highway stably.

公开(公告)号：JPS6242639A

公开(公告)日：1987-02-24

申请号：JP18221885

申请日：1985-08-20

Applicant: FUJITSU LTD

Inventor： NEGISHI HITOSHI ,  MITA TERUYOSHI ,  KITANO YOSHIHIRO ,  NAKAHARA YASUHIRO ,  NAKAMURA OSAMU

Abstract: PURPOSE:To reset quickly a section which is restored from trouble by gathering and judging state information of annular data transmission lines, which are recorded in communication equipments where loop back is set, by a communication equipment having the monitor function. CONSTITUTION:A communication equipment 1 having monitor functions and plural communication equipments 21-2n are connected by duplexed annular data transmission lines 3 and 4, and the equipment 1 judges a trouble to set loop-back as shown by 10 and 11 in the figure if frame synchronization in the system of the transmission line 3 or 4 cannot be acquired. When the trouble of the equipment 24 is restored thereafter, the equipment 24 discriminates whether frame synchronization is detected or not and sets loop back as shown by 24. The equipment 25 stores detection of frame synchronization in a storage part as state information of transmission lines. The equipment 1 receives infor mation transferred from the equipment 25 to judge restoration from the trouble and instructs release of the loop-back 11.

公开(公告)号：JPS61292438A

公开(公告)日：1986-12-23

申请号：JP13382785

申请日：1985-06-19

Applicant: FUJITSU LTD

Inventor： NEGISHI HITOSHI ,  MITA TERUYOSHI ,  NAKAHARA YASUHIRO ,  KITANO YOSHIHIRO ,  NAKAMURA OSAMU

Abstract: PURPOSE:To quicken the recovery of a communication system by providing a means detecting that the reception signal of one transmission system is normal and the reception signal of other transmission line system is not normal and using a changeover means to set the branch of the signal. CONSTITUTION:A loopback control section 40 inputs the detection signal of frame synchronizing detection circuits 4, 14 and controls switches 5, 15, 21 so as to branch a signal received from a normal system to the transmission side of the abnormal system when the state that only one transmission line system is normal continues for a prescribed time. That is, the loopback control section 40 discriminates that the state that a synchronizing detection signal is received from, e.g., the circuit 4 and no synchronizing detection signal is obtained from the circuit 14 continues for a prescribed time, the section 40 constitutes the loopback from the system 0 to the system 1 by setting the switches 5, 15 to the position R and the switch 21 to the position L.

公开(公告)号：JPS61150543A

公开(公告)日：1986-07-09

申请号：JP27601384

申请日：1984-12-25

Applicant: FUJITSU LTD

Inventor： NAKAMURA OSAMU ,  MITA TERUYOSHI ,  KITANO YOSHIHIRO ,  NAKAHARA YASUHIRO ,  INOUE YUKINORI

Abstract: PURPOSE:To improve the efficiency for using time slots at the time of point-to- point communication in the same node by executing inter-terminal communication through an internal bus at timing of a time slot which has been instructed to a circuit corresponding part. CONSTITUTION:In case when point-to-point communication is executed between terminals (terminals A, B) which have been connected to the same node, an optional time slot number (TSi) is set to an address register 11 of the circuit corresponding parts A, B. When a frame counter shows TSi, an output 16 of a comparator becomes effective in the circuit corresponding part A, and data is sent out to an output data bus 7 from an output buffer 14. Also, a status for showing a fact of the point-to-point communication in the same node is informed to a common controlling circuit 3, therefore, an input 2 is selected by a selector 4, and the data of the output data bus 7 is sent out to an input data bus 6. Accordingly, the communication of the terminal A B is executed.