公开(公告)号：SE9201883L

公开(公告)日：1993-05-02

申请号：SE9201883

申请日：1992-06-18

Applicant: KOREA TELECOMMUNICATION

Inventor： HAN I S

IPC: G06G7/163 ,  G06N3/063 ,  H03F3/16

Abstract: A MOSFET controlling multiplier for obtaining the precise function of the operational multiplication by offsetting the offset voltage of MOSFET to remove the non-linear current of MOSFET, utilizing symmetrical voltage sources and a current mirror circuit is disclosed. The MOSFET controlling multiplier utilizes a MOSFET linear means for linearly varying the output current I to a node A in accordance with an input voltage from an input voltage source Vg and a symmetrical input voltage from voltage sources Vx and -Vx. The input voltage from the input voltage source Vg is operatively associated with the symmetrical input voltage from the voltage sources Vx and -Vx. An impedance element Z outputs a voltage Vo, with the impedance element Z being connected to the node A of the MOSFET linear means and the ground.

公开(公告)号：DK134192D0

公开(公告)日：1992-11-04

申请号：DK134192

申请日：1992-11-04

Applicant: KOREA TELECOMMUNICATION

Inventor： LEE CHONG RAK ,  PARK YONG KYU

IPC: G10L13/04 ,  G10L13/06 ,  G10L19/00 ,  G10L21/04 ,  G10L25/90 ,  G10L5/02 ,  G10L7/02

公开(公告)号：FR2648292B1

公开(公告)日：1992-10-23

申请号：FR9006745

申请日：1990-05-30

Applicant: TELECOMMUNICATIONS ELECT ,  KOREA TELECOMMUNICATION

IPC: H03L7/06 ,  H03K7/06 ,  H03L7/081 ,  H03L7/089 ,  H04J3/06 ,  H04L7/00 ,  H04L7/033 ,  H04L25/40 ,  H04L7/10 ,  H03K5/26

Abstract: This invention provides a digital auto-phase-controlled retiming circuit which automatically locates the retiming clock phase in the center of input data eye pattern by detesting the phase difference between retiming clock and data and tracking adoptively the mutual phase variation in a case that the mutual phase difference between data and retiming clock is uncertain and changes according to time in digital transmission and/or digital signal processing systems.

公开(公告)号：GB9213381D0

公开(公告)日：1992-08-05

申请号：GB9213381

申请日：1992-06-24

Applicant: KOREA TELECOMMUNICATION

IPC: G06G7/163 ,  G06N3/063 ,  H03F3/16

Abstract: A MOSFET analog multiplier with a variable resistive MOSFET linear means for linearly varying output current I depending upon a symmetrical input voltage from voltage sources V2 and -V2 and an input voltage from an input voltage source V1 operatively associated with the symmetrical input voltage from the voltage source V2 and -V2, with the variable resistive MOSFET linear means having a node A to output the varied output current I therethrough is disclosed. An operational amplifying unit for amplifying the linearly varied output current I and which includes an operational amplifier U with an inverting input terminal connected to the node A of the MOSFET linear means, a non-inverting input terminal connected to ground, and an output terminal. The operational amplifying unit further includes a feedback element Z connected between the inverting input terminal and the output terminal of the operational amplifier U, where in use the output terminal outputs a voltage Vo.

公开(公告)号：FR2648292A1

公开(公告)日：1990-12-14

申请号：FR9006745

申请日：1990-05-30

Applicant: TELECOMMUNICATIONS ELECT ,  KOREA TELECOMMUNICATION

IPC: H03L7/06 ,  H03K7/06 ,  H03L7/081 ,  H03L7/089 ,  H04J3/06 ,  H04L7/00 ,  H04L7/033 ,  H04L25/40

Abstract: This invention provides a digital auto-phase-controlled retiming circuit which automatically locates the retiming clock phase in the center of input data eye pattern by detesting the phase difference between retiming clock and data and tracking adoptively the mutual phase variation in a case that the mutual phase difference between data and retiming clock is uncertain and changes according to time in digital transmission and/or digital signal processing systems.

公开(公告)号：SE9000859L

公开(公告)日：1990-09-12

申请号：SE9000859

申请日：1990-03-09

Applicant: KOREA ELECTRONICS TELECOMM ,  KOREA TELECOMMUNICATION

Inventor： LEE K K

IPC: H04J3/12 ,  H04L12/70 ,  H04L29/02 ,  H04M3/36 ,  H04M3/22 ,  H04M7/06 ,  H04Q1/30 ,  H04Q3/00 ,  H04Q3/545 ,  H04Q3/66 ,  H04L12/00 ,  H04L12/56 ,  H04Q11/04

Abstract: An internal routing method in an internal network for improving signaling message processing capability by balancing the workload among message handling processors (MHP) in common channel signaling system used in electronic exchanges. An internal routing algorithm is provided in the internal network to balance the workload among MHP's based on the characteristics of a circuit identification code (CIC). An identifying trunk circuit is uniformly distributed, and a load unbalancing factor is formulated approximately as a function of the number of failed MHP's as a worst case. With this approach, all MHP's are loaded almost equally regardless of the number of failed MHP's.

公开(公告)号：FR2640079A1

公开(公告)日：1990-06-08

申请号：FR8915925

申请日：1989-12-01

Applicant: ELECTRONIC & TELECOMM RES INST ,  KOREA TELECOMMUNICATION

Inventor： PARK HYUNG MOO ,  KIM DONG GOO

IPC: H01L29/812 ,  H01L21/285 ,  H01L21/338 ,  H01L29/417 ,  H01L29/78

Abstract: The invention provides the method of manufacturing a self-aligned GaAs MESFET wherein the Si thin film formed by PECVD (Plasma Enhanced Chemical Vapor Deposition) and the Si3N4 film formed by PCVD (Photo Chemical Vapor Deposition) onto the GaAs substrate are used as the capping film in the activation process, and then the self-aligned MESFET with the T type gate is manufactured through the selective chemical vapor deposition of the tungsten onto the Si thin film. As a result, the gap between the gate electrode and the n+ layer can be adjusted itself.

公开(公告)号：MY136277A

公开(公告)日：2008-09-30

申请号：MYPI9805920

申请日：1998-12-29

Applicant: KOREA TELECOMMUNICATION

Inventor： HAN HWANG-BO ,  SOO RHEE MYUNG ,  JIN BOO KI ,  SUP KIM JONG ,  MOON YOON YANG

IPC: H04L12/28 ,  H04B7/00 ,  H04L12/46 ,  H04N7/20

Abstract: A SATELLITE MULTIMEDIA SERVICE SYSTEM (100, 110) PROVIDES SATELLITE INTERNET SERVICE, MULTIPOINT DATA DISTRIBUTION SERVICE AND VIDEO AND AUDIO TRANSMISSION SERVICE. THE SATELLITE MULTIMEDIA SERVICE SYSTEM (100, 110) COMPRISES A SATELLITE (1), A TERMINAL RESOURCE PROVIDER (7), AN INTERNET RESOURCE PROVIDER (18), A SATELLITE MULTIMEDIA GATEWAY (8), A SATELLITE ANTENNA (9) AND A RECEIVER (2). THE TERMINAL RESOURCE PROVIDER (7) APPLIES A SERVICE REQUEST RECEIVED FROM A MULTIPLE NUMBER OF USERS TO A DEDICATED LINE (20). THE INTERNET RESOURCE PROVIDER (18) CHECKS WHETHER OR NOT THE USER IS ELIGIBLE AND SELECTIVELY PERFORMS ONE OF RETRIEVINC REQUESTED INFORMATION THEREIN AND RECEIVING THE REQUESTED INFORMATION FROM AN INTERNET INFORMATION PROVIDER, IF THE SERVICE REQUEST IS THE SATELLITE INTERNET SERVICE. THE SATELLITE MULTIMEDIA GATEWAY (8) RECEIVES THE REQUESTED INFORMATION FROM ONE OF THE INTERNET RESOURCE PROVIDER (18), A MULTIPOINT INFORMATION PROVIDER (19) AND A VIDEO AND AUDIO PROVIDER ACCORDING TO THE SERVICE REQUEST AND CONVERTS THE RECEIVED INFORMATION TO A SATELLITE SIGNAL HAVING A PREDETERMINED FORMAT FOR SATELLITE COMMUNICATION. THE SATELLITE ANTENNA (9) TRANSMITS THE SATELLITE SIGNAL TO THE SATELLITE (1). AND THE RECEIVER (2) RECEIVES THE SATELLITE SIGNAL FROM THE SATELLITE (1). (FIG.2)

公开(公告)号：HK1043821B

公开(公告)日：2005-06-24

申请号：HK02105235

申请日：2002-07-16

Applicant: KOREA TELECOMMUNICATION

Inventor： MYUNG WOO SEO ,  JEONG KWEN PARK ,  WANG KYU KANG

IPC: E21D9/06 ,  F16L20060101 ,  E01F5/00 ,  E02D29/045 ,  E21B7/04 ,  E21B7/20 ,  F16L1/024

公开(公告)号：FR2743236B1

公开(公告)日：2004-09-10

申请号：FR9613974

申请日：1996-11-15

Applicant: KOREA TELECOMMUNICATION

Inventor： AHN KEUM HYUG ,  LEE YUN HO ,  PARK ILL HWAN ,  JANG CHUNG RYONG

IPC: H04L9/30 ,  G06F9/06 ,  G09C1/00 ,  H04L9/32 ,  H04L12/22

Abstract: An identification scheme, a digital signature scheme giving message recovery, and a digital signature scheme with appendix are disclosed. In processing and transmitting information, a transmitting counterpart of a transmission message is confirmed. The unauthorized modification of the message is confirmed and transmitting behavior is detected, thereby providing the reliable information service.