公开(公告)号：JP2002057396A

公开(公告)日：2002-02-22

申请号：JP2000399523

申请日：2000-12-27

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： CHOI YONG-GYU ,  KIM KYONG-HON

IPC: G02B6/00 ,  C03C3/32 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/16 ,  H01S3/17

Abstract: PROBLEM TO BE SOLVED: To provide an optical amplifier system capable of being applied to an amplifier of a wavelength band of 1,600 to 1,650 nm. SOLUTION: The optical amplifier for amplifying a light signal comprises a praseodymium (Pr3+) ion-doped low phonon energy optical medium used for a gain medium of the light signal, and an stimulating means for stimulating the low phonon energy optical medium to obtain the amplified light signal in the band of 1,600 to 1,700 nm.

公开(公告)号：JP2001211144A

公开(公告)日：2001-08-03

申请号：JP2000367738

申请日：2000-12-01

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM TAE-JOONG ,  KIM JUNG-IM ,  KIM JAE-HEUNG ,  BANG SEUNG-CHAN

IPC: H04J13/00 ,  H03M13/00 ,  H04B1/707 ,  H04L1/00 ,  H04L1/08 ,  H04J13/04

Abstract: PROBLEM TO BE SOLVED: To provide a device and a method for repetitive transmission and reception for physical layer channel coding which transmit a channel-coded signal at a position where maximum time diversity can be secured when a signal after non-memory error correction channel coding is repeatedly transmitted. SOLUTION: This repetitive transmission and reception device for non- memory error correction channel coding performs non-memory error correction channel coding for information to be sent, repeats a channel-coded signal, positions the repeated signal at a position where maximum time diversity can be secured, and then sends the positioned signal. This invention is usable for the repetitive transmission and reception of a signal after non-memory error correction channel coding.

公开(公告)号：JP2001067462A

公开(公告)日：2001-03-16

申请号：JP2000206877

申请日：2000-07-07

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM MUNCHURL ,  KIM JIN WOONG ,  RO YONG MAN ,  YOU KI WON

IPC: G06T1/00 ,  G06F17/14 ,  G06F17/30 ,  G06K9/52 ,  G06K9/64 ,  G06T7/00 ,  G06T7/40

Abstract: PROBLEM TO BE SOLVED: To more accurately describe the texture of a video by describing the texture descriptor of the video through the use of a feature value extracted from the respective frequency domains of frequency domain division layouts in the form of a feature vector. SOLUTION: When an arbitrary video is inputted, the inputted video is Randon-transformed. The obtained set of primary Randon transform functions is Fourier-transformed. When a video function is Randon-transformed and is Fourier-transformed, it is moved to a pole coordinate frequency domain and a video signal is transformed into a pole coordinate frequency domain. The texture feature of the video is extracted from the pole coordinate frequency domain having a prescribed frequency sampling structure. A pole coordinate system frequency domain division layout is used. In the pole coordinate system frequency domain division layout, a frequency domain is divided by a human sight recognition system. The texture descriptor of the video, which describes the texture of the video, namely, a feature vector is calculated form the feature value.

公开(公告)号：JP2000148462A

公开(公告)日：2000-05-30

申请号：JP32342599

申请日：1999-11-12

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： GO EIHAI

IPC: G06F9/06 ,  G06F40/189

Abstract: PROBLEM TO BE SOLVED: To provide an assistant tool and a method for visual detailing which enables even a beginner of a format language to easily generate details and can verify simulation, etc., on a visual model. SOLUTION: This visual detailing assistant tool system is constituted including a virtual format description detail generator 100 which allows a user to generate and edit request details of software by taking a visualized object of a format detail type in from visual object libraries structured by application areas, function libraries 200 by application fields wherein visual format detail objects are structure and an application library 400, a virtual format description detail compiler 300 which reads in stored visual format description details and interprets the visual pattern to perform conversion to a format detail language, a format detail library 400 stored with the converted format detail language, and a format description detail language processor 500 which inputs a stored text-based format language code and verifies the format of the details.

公开(公告)号：JPH11205820A

公开(公告)日：1999-07-30

申请号：JP803098

申请日：1998-01-19

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIN MEISHUN ,  KIN YUJUN ,  RI TETSUYU ,  BOKU SAIKYO

IPC: G03H1/08 ,  G03H1/26 ,  G06T3/00 ,  G06T3/60 ,  H04N13/00 ,  G06T17/00

Abstract: PROBLEM TO BE SOLVED: To realize the display of a virtual hologram on a realtime basis by compressing respective images which are taken from various angles by means of an automatic image warping method and interpolating the images. SOLUTION: A digital camera takes an object at a plurality of angles, and the photograph images 10 are arranged in the order of a change. They are received as image data and an image which connects key frames through automatic image warping is generated, and a difference between the key frame and the respective images is detected and stored as an error image. Then, it is compressed through JPEG. The entire data of the compressed image is recompressed by entropy coding and it is stored as a hologram file. The hologram file is restored and is displayed, while the angle of object is turned in a display 20. A program where the taken continuous photograph images are viewed, while they are turned on a realtime basis is generated and a virtual hologram is realized.

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：JPH10321534A

公开(公告)日：1998-12-04

申请号：JP3812598

申请日：1998-02-04

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： RI BAN ,  HYAKU SOKYO ,  RI SHINKO

IPC: H01L21/205 ,  H01L21/20

Abstract: PROBLEM TO BE SOLVED: To form a high-quality supper lattice structure by forming an epitaxial InP layer on a lattice-matched InAlAs thin film after the thin film is formed on an InP substrate and forming a multilayered layer by repeatedly forming the multilayered structure of the InP substrate, InAlAs thin film, and epitaxial InP layer. SOLUTION: A lattice-matched InAlAs thin film 2 is grown on an InP substrate 1a having a (100) lattice plane by the MOCVD method. After the buffer film 2 is grown on the InP substrate 1a in such a way, an epitaxial InP layer 1b is formed on the film 2. When the InP layer 1b is again grown on the InAlAs thin film 2 after the thin film 2 is grown on the InP substrate 1a, a quantum line having a cross section of 10×10 nm or smaller is grown. When such an InP/InAlAs/InP multilayered thin film structure is repeatedly grown, a supper lattice can be manufactured in both the vertical and horizontal directions.

公开(公告)号：JPH10308526A

公开(公告)日：1998-11-17

申请号：JP23184697

申请日：1997-08-13

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM GYUNG-OK ,  RO TOKAN

IPC: H01L29/68 ,  H01L29/06 ,  H01L31/00 ,  H01L31/0264 ,  H01L31/0352 ,  H01L31/10 ,  H01L31/11 ,  H01L31/12

Abstract: PROBLEM TO BE SOLVED: To make it possible to decrease dark current by constituting the double barrier structure of a spacer layer and a resonance tunneling, a blocking barrier layer for electrons and a potential-change absorbing layer that is not doped at a corrector barrier layer between a base and a collector. SOLUTION: The movement of the emitter-layer electrons by resonance tunneling is started in the array assembling structure at a quantum point by an emitter-base voltage. The transition of the electrons stored in the array assembling structure at the quantum point to an exciting level is started by the absorption of infrared rays. At this time, the electrons, which are transitted to the exciting level, pass through a potential-change absorption layer 40 and emits thermions to a base region. Of the electrons passed through a base layer 36, the resonance tunnelled electons are selected through a quantum binding level of the resonance tunnelled structure, which is composed of a quantum barrier layer 32 on the side of a collector, a quantum well layer 33 and a quantum barrier layer 34, and the electrons reach a collector layer 20.

公开(公告)号：JPH10269172A

公开(公告)日：1998-10-09

申请号：JP25945197

申请日：1997-08-12

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： PAKU YUN OKU ,  KIM YON YON ,  IMU KI UKU

IPC: G06F13/362

Abstract: PROBLEM TO BE SOLVED: To make it possible to support many master devices on a PCI bus, by using a one-shot signal based upon a frame signal and outputting an arbitration signal at the same as the end of the operation of a module in use with top priority. SOLUTION: A decoding part 100 receives a signal 22 of a module having requested service and searches a priority decoder 25 for the module with top priority among requesting modules. At this time, a one-shot generation part 200 generates the one-shot signal 33 by using the frame signal 30. A signal storage part 300 stores the module with the top priority according to the signal 33 and feeds it back as a signal 21 for selecting a next requesting module. An arbitration signal output part 400 uses the one-shot signal 33 based upon the frame signal 30 to output a bus arbitration signal 38 for starting use to the module with top priority at the same time as the operation end of the module in use.

公开(公告)号：JPH10200475A

公开(公告)日：1998-07-31

申请号：JP35157896

申请日：1996-12-27

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： HON HYON HA ,  UON YON HYOBU

IPC: H04B10/27 ,  H04B10/00 ,  H04B10/02

Abstract: PROBLEM TO BE SOLVED: To minimize the size of a space sharing light switch, maintaining a constant cell loss ratio and to facilitate capacity increase. SOLUTION: Many light switching subsystems 500 in which output terminals are parallelly connected have many input modules 3 which analyze switching state information of each different wavelength group that corresponds to an incoming address of an inputted cell, perform wavelength conversion according to wavelength information and output it, a wavelength multiple space sharing light switching module 1 which outputs by delaying by one time slot through an output terminal when routing information is added to a cell that is inputted from the module 3 and outputs to a corresponding output terminal when it is not, many wavelength group demultiplexers 4 which demultiplex a cell that is inputted from the module 1 and many output modules 5 which input cells of different wavelength groups, filter each wavelength, convert it into an electric signal and output it, and carry out output recontention over two time slots.