公开(公告)号：JP2002198959A

公开(公告)日：2002-07-12

申请号：JP2000400795

申请日：2000-12-28

Applicant: KOREA TELECOMMUN

Inventor： LEE HOON

IPC: H04L12/14 ,  H04L12/24 ,  H04L12/70

Abstract: PROBLEM TO BE SOLVED: To solve a problem that almost all the Internet charges collections are on a fixed-price basis, and it is difficult to measure traffic volume with various services categorized and to impose charges accompanying the measurement on the services. SOLUTION: The present invention relates to a meter rate charging device for charging of the Internet network and its method. When charges are imposed on the services of the Internet network, the meter rate charging system is introduced to an edge router that accepts requirements for various service qualities, for subscribers to be satisfied with desirable service qualities which are classified into service categories. Furthermore, transmission efficiency and cost efficiency of the packet transmission in the network is improved, a communication network manager assigns appropriate bandwidth to each of call categories taking into account property of the call category, processes traffic, and imposes appropriate rate on the service on the basis of accounting policy of the meter rate charging accordingly. Therefore, the present invention provides advantages that service quality of the Internet network is improved since subscriber is prevented from transmitting unnecessary traffic, and subscriber's cost efficiency is improved since subscriber pays a charge low as against the service quality that the subscriber receives from the network resources.

公开(公告)号：JP2002183009A

公开(公告)日：2002-06-28

申请号：JP2000392133

申请日：2000-12-25

Applicant: KOREA TELECOMMUN

Inventor： LEE DONG MYUN

IPC: G06F13/00 ,  G06F17/00 ,  G06F21/20 ,  H04L29/08 ,  H04L29/12 ,  G06F15/00 ,  H04L12/56

Abstract: PROBLEM TO BE SOLVED: To provide a device and a method for communication service by individual identifiers through the Internet which enables users to communicate anywhere on the Internet by providing communication between the users using consistent identifiers on the Internet. SOLUTION: As for the device and method for communication service by individual identifiers through the Internet, unique individual identifiers are registered and the URLs, electronic mail accounts, and identifications of currently used terminals of individuals can be specified, so access is allowed only with an individual identifier even if the position and use terminal of the Internet user are changed and subscribers can have real-time communication. Further, various Internet applied services (homepage, electronic mail, etc.), that subscribers have on the Internet can be managed by using the unique individual identifier information.

公开(公告)号：JP2002152056A

公开(公告)日：2002-05-24

申请号：JP2000391542

申请日：2000-12-22

Applicant: KOREA TELECOMMUN

Inventor： LEE HAN-SUP ,  KIM TAE-GEUN

IPC: G06F11/10 ,  H03M13/29 ,  H03M13/39 ,  H03M13/45 ,  H04B7/26 ,  H04L1/00

Abstract: PROBLEM TO BE SOLVED: To provide a turbo code decoder and a decoding method that reduces a decode delay of a turbo code so as to stably provide a high-speed multimedia service with high quality and to provide a computer-readable recording medium for recording a program to realize this method. SOLUTION: The decoder of this invention includes channel estimate means 210, 211 that estimate a channel state from a signal received from a transmission end to measure a signal to interference ratio(SIR), a control means for controlling the number of repetitive decoding times that compares the signal to interference ratio(SIR) measured by the channel estimate means with a threshold value having been already set so as to control the number of repetitive decoding times, and a decoding means 250 that decodes the signal repetitively by the number of times controlled by the control means for the number of repetitive decoding times.

公开(公告)号：JP2000196703A

公开(公告)日：2000-07-14

申请号：JP35341599

申请日：1999-12-13

Applicant: KOREA TELECOMMUN

Inventor： KIN TOSHAKU

IPC: H04L29/10 ,  H04J11/00 ,  H04L12/00 ,  H04L27/26 ,  H04L29/08 ,  H04M3/00 ,  H04M11/00 ,  H04L12/02 ,  H04L12/28 ,  H04L12/46 ,  H04L12/66

Abstract: PROBLEM TO BE SOLVED: To transmit/receive low speed data in a low band link and high speed data in a high band link by installing a means modulating a low band signal string and a high band signal string, putting together the modulated low band signal string and the modulated high band signal string and generating a transmission signal. SOLUTION: The transmission/reception device is constituted of a modulation/ transmission part and a demodulation/reception part. The duplex links of mutually independent high band and low band are provided. High speed data such as a packet and a multiframe are transmitted through a high band link Rb and low speed data such as general telephone service and a general information communication network signal are transmitted through a low band link Ra. At that time, the modulation/ transmission part separates general telephone service and the signal of a general information communication network in the low band and the packet and the multiframe of the high band and resolves them into the number (r) of keys decided by a key allocation part 35 and 255-r-pieces of different partial signals. They are modulated and a transmission signal X[n] is generated.

公开(公告)号：JP2000004214A

公开(公告)日：2000-01-07

申请号：JP980699

申请日：1999-01-18

Applicant: KOREA TELECOMMUN

Inventor： KYON MO YUN ,  SAN IN KIM ,  SU MI JAN ,  SAN GU I ,  JIN SHIKI PARK ,  YUN HAKU BAN ,  YON KI PARK

IPC: G11C21/00 ,  G02B6/293 ,  G02F1/35 ,  G02F2/02 ,  H04B10/27 ,  H04B10/291 ,  H04B10/524 ,  H04B10/556 ,  H04J14/00 ,  H04J14/02 ,  H04L12/28 ,  H04L12/931 ,  H04Q11/00 ,  H04B10/02 ,  H04L12/56

Abstract: PROBLEM TO BE SOLVED: To evade the collision of cells to be outputted to the same channel in a high-speed network structure. SOLUTION: This optical buffer is provided with an AWG demultiplexer 11 for demultiplexing an inputted signal's wavelength, tera-Hertz optical asymmetric demultiplexing means(TOAD) 12 equipped with a semiconductor optical amplifier(SOA) for detecting a cell pointer at high speed, circulation means 13 for circulating data detected from this TOAD at high speed, switch means 14 for outputting data inputted from the circulation means 13 while determining delay corresponding to whether the cell pointer is detected from the TOAD at high speed or not, and photocoupler 16 for coupling data outputted by this switch means and data extracted by the TOAD and outputting them.

公开(公告)号：JPH11330976A

公开(公告)日：1999-11-30

申请号：JP5764699

申请日：1999-03-04

Applicant: KOREA TELECOMMUN

Inventor： KAN EITAI ,  KYO TAIKYO ,  KO SHOSEKI

IPC: G10L19/02 ,  G10L25/00 ,  H03H9/46 ,  H03M7/30 ,  G10L7/04 ,  G10L9/18

Abstract: PROBLEM TO BE SOLVED: To provide the equal-interval subband analyzing filter for MPEG audio multichannel processing which can analyze and filter frame samples of 5 channels in an assigned cycle at a constant operation frequency. SOLUTION: This filter consists of a window wing module 10 which starts a filtering process in response to the input of a frame start signal and which performs window wing operation for inputted frame data and a matrixing module 20 which receives the arithmetic result of the window wing module 10 and which performs matrixing operation for the frame data; and the window wing module 10 and matrixing module 20 are coupled in a pipeline shape with each other to filter 5 channels by timing division and use one filter bank by making good use of pipeline structure and timing division technique, channel by channel.

公开(公告)号：JPH1155180A

公开(公告)日：1999-02-26

申请号：JP31598097

申请日：1997-10-31

Applicant: KOREA ELECTRONICS TELECOMM ,  KOREA TELECOMMUN ,  DACOM CO LTD

Inventor： KYO SHOJUN ,  RI KEN ,  CHO TETSUKAI ,  KIN KISHAKU

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/12 ,  H04B7/26 ,  H04J13/00 ,  H04W52/04 ,  H04W52/24 ,  H04W52/34 ,  H04W52/36 ,  H04W84/14

Abstract: PROBLEM TO BE SOLVED: To reduce the interference signal power of a forward link which is due to traffic increase and to obtain an appropriate traffic (speech communication) quality to a terminal station by deciding whether full power that has been allocated to a forward traffic channel of the terminal station is a normal mode or a critical mode, comparing a receiving bit energy/noise ratio with a power control critical value and increasing or reducing sending power according the difference. SOLUTION: When signal information is received from a mother base station 200, it is transmitted to a terminal station traffic channel demodulator 212 and is modulated. A forward traffic channel receiving bit energy/noise ratio measuring part 214 measures a receiving bit energy/noise ratio of a traffic channel from demodulated receiving data. The power increase or reduction with respect to the forward traffic channel is decided by comparing the receiving bit energy/noise ratio with the power control critical value of the forward traffic channel. Thus, a traffic quality of a good quality can be acquired to a terminal station.

公开(公告)号：JPH10124658A

公开(公告)日：1998-05-15

申请号：JP17062596

申请日：1996-06-10

Applicant: KOREA ELECTRONICS TELECOMM ,  KOREA TELECOMMUN AUTHORITY

Inventor： KIM JE HAN

IPC: G06F15/18 ,  G06N3/00 ,  G06T3/00 ,  G06T7/00 ,  H04N13/02

Abstract: PROBLEM TO BE SOLVED: To easily and efficiently correct image distortion by finding out mapping relation among a correction point in the three-dimensional(3D) space, a correction point projected onto a two-dimensional(2D) image plane and an irradiation angle by a neural network, storing the relational values in a table and correcting image distortion by using the table. SOLUTION: The system is provided with a camera 50, an angle adjusting device 60 for plane light, a video processing computer 70 for obtaining the angular information between plane light and a reference line and executing image processing, and a monitor 80 for outputting 3D distance information as plural hardware elements. In this case, mapping relation between the actual coordinate values of an optional correction point in the 3D coordinate space and the projected point on a 2D image plane corresponding to the correction point is found by supplementing the irradiation angle θ of irradiation light to the reference line. The found mapping function is converted into the connection strength of the neural network and stored in a table. After finding the distance of video information by inversely projecting an obtained camera image, a table value corresponding to the distance is inputted to the neural network to correct image distortion.

公开(公告)号：JPH10116215A

公开(公告)日：1998-05-06

申请号：JP23130397

申请日：1997-08-27

Applicant: KOREA TELECOMMUN

Inventor： RI SOHYUN

IPC: G06F12/00 ,  G06F9/46 ,  H04B7/212

Abstract: PROBLEM TO BE SOLVED: To improve the concurrency of moving transactions and the performance of the moving data processing system, by checking a time stamp by transaction scheduler at the ending stage of a transaction. SOLUTION: To guarantee the order of a moving transaction, a data time stamp, at the time when the moving transaction performs read operation and write operation, is compared with data time stamps stored in a current data base at the execution ending stage the transaction. In this case, a central processor 21 controls and manages a data base management system 23, a main memory 22, and a communication module 24 respectively and a main memory 22 stores data generated at a transaction processing stage; and the data base management system 23 stores and manages data generated at the transaction processing stage in the data base finally and the communication module 24 communicates with other system.

公开(公告)号：JPH10115729A

公开(公告)日：1998-05-06

申请号：JP17100897

申请日：1997-06-11

Applicant: KOREA ELECTRONICS TELECOMM ,  KOREA TELECOMMUN

Inventor： RI DON HO ,  KIM HYAN GYUN ,  PARK CHAN SUU

IPC: G02B5/28 ,  G02B6/293 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/2563 ,  H04J14/00 ,  H04J14/02 ,  H04B10/02 ,  H04B10/18

Abstract: PROBLEM TO BE SOLVED: To actualize a multichannel optical transmission system which efficiently suppresses crosstalk due to 4-light-wave mixture of an optical fiber and is more compatible as a result of an efficient array of multichannel frequencies as to the multichannel optical frequency arraying method and multichannel optical frequency arraying device which use an optical fiber Michelson optical filter. SOLUTION: The multichannel optical transmission system which uses optical frequency (or wavelength) division multiplexing technology uses the optical filter 14 composed of an optical fiber Michelson interferometer to set multichannel optical frequencies at artificially equal intervals or sequential unequal intervals. Then the multichannel wide frequencies which are set at the artificially equal intervals or sequentially unequal intervals are stably arrayed.