| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | Signal detection circuit not affected by minute voltage fluctuations contained in input signal and operation method therefor | US444213 | 1989-12-01 | US5050190A | 1991-09-17 | Hiromi Shimada; Harufusa Kondoh |
| A reference voltage generating circuit (9) for supplying a reference voltage (Vag.+-..DELTA.V) is connected to a peak hold or tracking circuit (34). The setting value of the voltage (.DELTA.V) is determined to a value exceeding the minute voltage fluctuations, such as back pulses or noises, occasionally contained in the input signal (Vin), by the voltage division in the generating circuit (9). Therefore, in response to the input signal Vin in accordance with the alternate mark inversion, exact data which is not influenced by the minute voltage fluctuation can be detected by the data detector (33). | ||||||
| 2 | Data receiver | JP31690988 | 1988-12-14 | JPH0786513B2 | 1995-09-20 | 宏美 島田; 晴房 近藤 |
| 3 | Peak holding circuit | JP31690988 | 1988-12-14 | JPH02161361A | 1990-06-21 | SHIMADA HIROMI; KONDO HARUFUSA |
| PURPOSE: To prevent the output voltage from being influenced by a minute voltage fluctuation containing in the input voltage by providing a pseudo reference voltage generating means for applying a pseudo reference voltage to a peak detecting means. CONSTITUTION: When a positive pulse being an input voltage Vin is given, a peak voltage Vpk1 corresponding to a peak value of the voltage Vin is charged to a capacitor 5. The voltage Vpk1 is divided and outputted as a voltage Vth1. In this case, in a reference voltage generating circuit 9, a reference voltage line 25 is brought to a voltage being higher by a voltage Δg than an analog ground voltage, therefore, both levels of the voltage Vpk1 and the voltage Vth1 do not drop to a voltage Vag + ΔV or below. Accordingly, when the voltage Vin being effective as an input signal is not applied, even if a minute back pulse or a noise is contained in the voltage Vin, their influence does not appear in the voltage Vth1. On the other hand, when a negative voltage is applied as the voltage Vin, it is also the same as the foregoing, and its influence does not appear in the voltage Vth2. COPYRIGHT: (C)1990,JPO&Japio | ||||||
| 4 | 수동광가입자망 리피터 및 이를 이용한 수동광가입자망시스템 | KR1020060099828 | 2006-10-13 | KR1020080033740A | 2008-04-17 | 박형진; 윤호성 |
| A PON(Passive Optical Network) repeater and a passive optical network system using the same are provided to remotely monitor transmission of a light signal in a CO(Central Office) by allowing a PON repeater to transmit values of light intensity of light signals in each section to an OLT(Optical Line Terminal) through radio communication. The first optical coupler(310) splits a downstream signal into a downstream optical modulation signal and an upstream white light source and outputs them, and receives an amplified upstream light modulation signal and outputs it as an upstream signal. The first amplifying unit(320) amplifies the downstream optical modulation signal split from the first optical coupler. The second amplifying unit(330) separates the paths of the upstream optical modulation signal and the upstream white light source split by the first optical coupler, amplifies them, and transmits the amplified upstream optical modulation signal to the first optical coupler. A pump laser(350) supplies a pump light for signal amplification to the first and second amplifying units. The second optical coupler(340) couples the downstream optical modulation signal amplified by the first amplifying unit and the white light source amplified by the second amplifying unit, outputs it, and transmits the upstream optical modulation signal to the second amplifying unit. A light power splitting unit(360) outputs power of an output signal of the second optical coupler, outputs it to a plurality of optical lines, combines upstream optical modulation signals applied via the plural optical lines, and transmits the same to the second optical coupler. | ||||||
| 5 | ＴＤＭ-ＰＯＮ 기반의 원격 중계 장치 및 그 시스템 | KR1020080025470 | 2008-03-19 | KR1020090100083A | 2009-09-23 | 윤호성; 김종안 |
| PURPOSE: A TDM-PON based remote relay apparatus and a system thereof are provided to increase the signal transmission distance and branching rate efficiently without transmission loss as using the existing infra as it is. CONSTITUTION: A TDM-PON based remote relay apparatus includes the first TDM-PON optical transceiver(51), signal reproducing units(52,53), and the second TDM-PON optical transceiver(54). The first TDM-PON optical transceiver transceives downlink/uplink signals with a TDM-PON OLT of a station side. The signal reproducing units respectively reproduce the downlink signal inputted from the first TDM-PON optical transceiver and an uplink signal inputted from the second TDM-PON optical transceiver. The second TDM-PON optical transceiver transceives the downlink/uplink signals with the TDM-PON ONT of a subscriber side. | ||||||
| 6 | ＴＤＭ-ＰＯＮ 기반의 단일 광 포트를 구비한 원격 중계 장치 | KR1020080104212 | 2008-10-23 | KR1020100045146A | 2010-05-03 | 윤호성; 김종안 |
| PURPOSE: A remote relay device with a single optical port based on TDM-PON for reducing the need of an optical cable is provided to increase the transmission distance and divergence rate of an optical signal in a location away from a CO(Central Office). CONSTITUTION: A first WDM(Wavelength Division Multiplexing)(60) is connected between each TDM-PON ONT(Time Division Multiplexing-Passive Optical Network Optical Network Terminals) of each subscriber side to a splitter(70) for the optical signal division. A 1-port RT(Repeater)(50) is connected through the single optical port to a first dense wavelength division multiplexer. The first dense wavelength division multiplexer performs wavelength division multiplexing on the optical signal of the TDM-PON OLT(Time Division Multiplexing-Passive Optical Network Optical Line Terminal). | ||||||
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