Tag Archives: gain

Quick gain control of light amplifier

Application Number: 00124286Application Date: 2000.08.23Publication Number: 1286413Publication Date: 2001.03.07Priority Information: 1999/8/25 US 09/382,853International: G02F1/39Applicant(s) Name: Lucent Technologies Inc.Address: Inventor(s) Name: M.R. Folner;G.H. Hanzic;P. TezeimanPatent Agency Code: 11038Patent Agent: jiang shixunAbstract In an optically amplified wavelength division multiplexed (WDM) system having a WDM signal comprising a plurality of optical channels, the per-channel gain of the optical… Read More »

Gain temperature compensator for transceiver

Application Number: 00125730Application Date: 2000.10.18Publication Number: 1349309Publication Date: 2002.05.15Priority Information: International: H04B1/04;H04B1/16Applicant(s) Name: Zhongxing Communication Co., Ltd., ShenzhenAddress: Inventor(s) Name: Li Xiangling;Liu JianliPatent Agency Code: 00000Patent Agent: Abstract The invention apapratus consists of power controlled voltage circuit, level processing circuit and controlled gain amplifier which are connected successively and temp. compensation circuit between the level… Read More »

Communication equipment, radio communication system and automatic gain control method of radio communication equipment

Application Number: 00126271Application Date: 2000.06.30Publication Number: 1283006Publication Date: 2001.02.07Priority Information: 1999/6/30 JP 184547/99International: H04B1/06Applicant(s) Name: NEC Corp.Address: Inventor(s) Name: Tomiyori YutakaPatent Agency Code: 72001Patent Agent: zhang zhichengAbstract An AGC circuit is formed such that it appropriately controls the amplification factor of a gain control amplifier 7 on the basis of in-reception electric field intensity. Both… Read More »

Device and method for controlling video signal gain

Application Number: 00126357Application Date: 2000.09.11Publication Number: 1302158Publication Date: 2001.07.04Priority Information: 1999/12/24 KR 62057/99International: H04N9/68;H04N5/53Applicant(s) Name: Samsung Electronics Co., Ltd.Address: Inventor(s) Name: Kim Chong-DaePatent Agency Code: 11105Patent Agent: wang zhisenAbstract A device and a method for controlling a video signal gain valus, in a video display device it controls a magnitude of an RGB video signal… Read More »

Gain control circuit, receiver and transmitter, radio communication device and system

Application Number: 00117694Application Date: 2000.05.29Publication Number: 1275838Publication Date: 2000.12.06Priority Information: 1999/5/28 JP 150082/99International: H03G3/20;H04B1/38Applicant(s) Name: Matsushita Electric Industrial Co., Ltd.Address: Inventor(s) Name: Takeyama Hirohiko;Ikida Hirohiko;Haseyama ToshihiroPatent Agency Code: 11105Patent Agent: ma yingAbstract To configure a simple gain control circuit that has a wide dynamic range, an excellent temperature characteristic and high gain control accuracy. SOLUTION:… Read More »

Automatic gain controller and method and commcnication equipment with said control function

Application Number: 00120439Application Date: 2000.07.07Publication Number: 1280417Publication Date: 2001.01.17Priority Information: 1999/7/7 JP 193473/99International: H03G3/20Applicant(s) Name: Matsushita Electric Industrial Co., Ltd.Address: Inventor(s) Name: Iwata Yasushi;Ichikawa YasushiPatent Agency Code: 11105Patent Agent: ma yingAbstract When an input signal S11 is variable-gain-amplified by a variable gain amplifier 1 to obtain a predetermined output signal S12, a variable gain control… Read More »

Multiwave amplifying telecommunication system having automatic gain control

Application Number: 00122733Application Date: 2000.06.30Publication Number: 1285668Publication Date: 2001.02.28Priority Information: 1999/6/30 EP 99112465.2International: H04J14/02Applicant(s) Name: Pirelli Cavi E Sistemi S.P.A.Address: Inventor(s) Name: Fasto Meri;Faborizio D. Paskuier;Gyopani SachiPatent Agency Code: 11038Patent Agent: yang guoxuAbstract Optical telecommunication system, comprising: a transmitting station capable of transmitting a multiple-wavelength optical signal comprising at least two predetermined wavelengths, a wavelength… Read More »

Self-adaption gain and/or phase regulation control system and method thereof

Application Number: 00124104Application Date: 2000.08.16Publication Number: 1285654Publication Date: 2001.02.28Priority Information: 1999/8/19 US 09/377,387International: H03F1/32;H04B1/00Applicant(s) Name: Lucent Technologies Inc.Address: Inventor(s) Name: Rize Ganadan;Robert E.MeirPatent Agency Code: 11038Patent Agent: jiang shixunAbstract An adaptive gain and/or phase control system adapts the gain and/or phase adjustment resolution to provide improved performance. For example, the adaptive gain and/or phase control… Read More »

Automatic gain control (AGC) method for digital base band

Application Number: 00109424Application Date: 2000.06.23Publication Number: 1330456Publication Date: 2002.01.09Priority Information: International: H04B1/16Applicant(s) Name: Huawei Technology Co LtdAddress: Inventor(s) Name: Li ZexianPatent Agency Code: 11127Patent Agent: wang qiAbstract An automatic gain control (AGC) method for digital baseband includes such steps as digitalizing the received signals, calculating the energy of received signals, the convertion from signal energy… Read More »

Radio-frequency amplifier with gain control

Application Number: 00108592Application Date: 2000.05.18Publication Number: 1274991Publication Date: 2000.11.29Priority Information: 1999/5/25 US 09/318,145International: H03F1/34;H03G3/20Applicant(s) Name: International Business Machine Corp.Address: Inventor(s) Name: Holley A. Rafferay;Nasaneel KimPatent Agency Code: 11038Patent Agent: wang yonggangAbstract A RF integrated circuit including an amplifier having an input node and an output node; a switchable feedback path coupled between the output node… Read More »

Automatic gain control method and circuit and receiving apparatus using the same circuit

Application Number: 00104304Application Date: 2000.03.17Publication Number: 1267956Publication Date: 2000.09.27Priority Information: 1999/3/18 JP 73977/99International: H03G3/20;H04B1/16Applicant(s) Name: Matsushita Electric Industrial Co., Ltd.Address: Inventor(s) Name: Miura NozomuPatent Agency Code: 11105Patent Agent: lu xiaozhangAbstract An automatic gain control circuit optimizes a follow-up performance of an automatic gain control loop to thus assure a good receiving operation. A generation timing… Read More »

Prepumping method to obtain stable gain of passive Q-regulaitng laser

Application Number: 00103362Application Date: 2000.03.03Publication Number: 1265528Publication Date: 2000.09.06Priority Information: International: H01S3/09Applicant(s) Name: Qinghua Univ.Address: Inventor(s) Name: Gong Mali;Wang Weiyu;Liu XingzhanPatent Agency Code: 11201Patent Agent: liao yuanqiuAbstract The present invention belongs to the field of laser modulation technology, and which includes the following steps: to apply one prepumping power lower than the laser pumping threshold… Read More »

Gain control optical amplifier

Application Number: 00102812Application Date: 2000.01.24Publication Number: 1265475Publication Date: 2000.09.06Priority Information: 1999/1/23 KR 2101/99International: G02F1/39;H04J14/00Applicant(s) Name: Daewoo Electronics Co.,Ltd.Address: Inventor(s) Name: Lee Gyo-Haeng;Choe Bong-suPatent Agency Code: 72002Patent Agent: han hongAbstract The present invention provides a gain control optical amplifier, used in a wave division multiplexing transmission system as a relay amplifier, for maintaining the output level… Read More »

Blend erbium amplifier with gain control circuit

Application Number: 00102134Application Date: 2000.02.28Publication Number: 1311454Publication Date: 2001.09.05Priority Information: International: G02F1/383;G02F1/39Applicant(s) Name: Huawei Technology Co., Ltd.Address: Inventor(s) Name: Jin YuzhiPatent Agency Code: 00000Patent Agent: Abstract Blend erbium optical fibre amplifier with gain control circuit includes light inlet end, light outlet end and blend erbium optical fibre amplifier. There will be a light coupler between… Read More »

Automatic gain control of receiver and its method

Application Number: 00100960Application Date: 2000.01.12Publication Number: 1263384Publication Date: 2000.08.16Priority Information: 1999/1/12 US 09/229,144International: H04B1/16Applicant(s) Name: Motorola Inc.Address: Inventor(s) Name: Mark Edward PisenPatent Agency Code: 11038Patent Agent: fu jianjunAbstract A receiver automatic gain control includes a variable gain receiver having a control input and responsive to a gain control signal for adjusting the output level of… Read More »

Automatic gain controlling method and apparatus

Application Number: 00100920Application Date: 2000.01.07Publication Number: 1260634Publication Date: 2000.07.19Priority Information: 1999/1/8 JP 003070/99International: H03G3/20;H04B7/26Applicant(s) Name: Matsushita Electric Industries Co., Ltd.Address: Inventor(s) Name: Iwata Yasufubi;Ichikawa TaifubiPatent Agency Code: 11105Patent Agent: ma yingAbstract A constant output signal can be achieved by controlling a gain variable amplifier 2 based on a level of an output signal which is… Read More »