Pulse-width modulation of compressor

Application Number  00128769 Application Date  2000.09.21 Publication Number  1289011 Publication Date  2001.03.28 Priority Information   1999/9/21 US 09/401,343   International Classification  F04C18/02;F04C29/08   Applicant(s) Name  Kepulan Co.   Address     Inventor(s) Name  Royee;J. Depuck;Mark Bass;Jams F. Fugert   Patent Agency Code  11038 Patent Agent  wang jinglin AbstractA scroll compressor includes a capacity modulation system. Read more

Signal modulation method, signal modulation device, signal demodulation method and signal demodulation device

Application Number: 00121719Application Date: 1995.07.07Publication Number: 1312555Publication Date: 2001.09.12Priority Information: 1994/7/8 JP 157175/94International: G11B20/10;H03M7/00Applicant(s) Name: Sony Corp.Address: Inventor(s) Name: Okazaki Toru;Yoshimura ToshijiPatent Agency Code: 72001Patent Agent: ye kaidongAbstract In the present invention, a partly duplexed conversion table is used as a conversion table for converting an M-bit based data string directly into an N-bit based Read more

Digital type modulation signal receiver

Application Number: 00123792Application Date: 2000.09.07Publication Number: 1288331Publication Date: 2001.03.21Priority Information: 1999/9/9 JP 255262/99International: H03L7/06;H04L27/227;H04N7/20Applicant(s) Name: AlPS Electric Co., Ltd.Address: Inventor(s) Name: Kawai AkiraPatent Agency Code: 11216Patent Agent: liu jiyangAbstract This invention provides a digitally modulated signal receiver includes an IQ demodulator having two mixers into which a digitally modulated signal is input. A voltage-controlled local Read more

Gaussian minimum frequency-shift keying modulation method and equipment

Application Number: 00125857Application Date: 2000.10.26Publication Number: 1351440Publication Date: 2002.05.29Priority Information: International: H04L27/12Applicant(s) Name: Huawei Technology Co LtdAddress: Inventor(s) Name: Zhu Jingming;Gui Yijun;Yu LinPatent Agency Code: 31100Patent Agent: zhou chengAbstract A Gaccssian minimum frequency-shift keying modulation method and device is disclosed. Said method includes such steps as creating binary digital code cell to be modulated and Read more

Pulse code modulation dc centering vestigial sideband converter

Application Number: 00126037Application Date: 2000.08.24Publication Number: 1285688Publication Date: 2001.02.28Priority Information: 1999/8/24 US 09/382232International: H04N7/015;H04L27/04Applicant(s) Name: Thomson Licensing Corp.Address: Inventor(s) Name: D.L. MeniliPatent Agency Code: 72001Patent Agent: wang yongAbstract A digital VSB modulator (200) includes a modulator to which an ongoing sampled data stream of 1-sample-per-symbol successive PCM symbol signal samples are applied as a modulating Read more

New polypeptide-human cell periodic modulation factor and polynucleotide for coding such polypeptide

Application Number: 00111875Application Date: 2000.03.02Publication Number: 1311251Publication Date: 2001.09.05Priority Information: International: A61K31/7088;A61K38/16;A61K38/17;A61K39/395;A61P7/00;A61P31/00;A61P31/18;A61P35/00;A61P37/00;C07H21/00;C07K14/00;C07K14/435;C07K16/00;C07K16/18;C12N15/10;C12N15/11;C12N15/12;C12N15/63;C12N15/64;C12P21/00;C12Q1/68;G01N33/68Applicant(s) Name: Bode Gene Development Co., Ltd., ShanghaiAddress: Inventor(s) Name: Mao Yumin;Xie YiPatent Agency Code: 00000Patent Agent: Abstract This invention discloses a new polypeptide-human cell periodic regulatory gene 28, polynucleotide for coding this polypeptide and the method for producing this polypeptide through DNA recombination Read more

Method and device based on modulation percentage for controlling instantaneous value of pulse width modulated sine waves for inverter

Application Number: 00117153Application Date: 2000.06.07Publication Number: 1281289Publication Date: 2001.01.24Priority Information: International: H02M7/00;H02M7/42Applicant(s) Name: Huawei Electric Technology Co Ltd. Shenzhen CityAddress: Inventor(s) Name: Sun Wenhuan;Zhou Dangsheng;Zhang YunxiangPatent Agency Code: 44217Patent Agent: guo weigangAbstract A method based on modulation percentage for controlling the instantaneous value of sine pulse width modulation (SPWM) for inverter and its device are Read more

Proportional-integral-derivative control method based on modulation percentage for instantaneous value and UPS

Application Number: 00117163Application Date: 2000.06.09Publication Number: 1281290Publication Date: 2001.01.24Priority Information: International: H02J7/00;H02M7/00;H02M7/42Applicant(s) Name: Huawei Electric Technology Co Ltd. Shenzhen CityAddress: Inventor(s) Name: Sun Wenhuan;Zhou Dangsheng;Zhang YunxiangPatent Agency Code: 44217Patent Agent: guo weigangAbstract A proportional-integral-drivative (PID) control method based on instantaneous modulation percentage and its controlled uninterrupted power supphy (UPS) are dislosed. The inverter is controlled Read more

Optically Chronatographic imaging method and equipment with focusing, ultraconic wave and modulation

Application Number: 00117208Application Date: 2000.06.27Publication Number: 1279054Publication Date: 2001.01.10Priority Information: International: A61B5/06;A61B8/00Applicant(s) Name: Huanan Normal Univ.Address: Inventor(s) Name: Xing Da;Yao YongPatent Agency Code: 44201Patent Agent: he yanlingAbstract An optically chromatographic imaging method features that the focusing and ultrasonic wave are used to modulate the laser beam transmitted to deep tissue and locate the tissue, the Read more

Pulse width modulation type contravariant device

Application Number: 00118986Application Date: 2000.07.05Publication Number: 1291822Publication Date: 2001.04.18Priority Information: 1999/7/5 JP 190674/99International: H02M3/28;H02M3/335Applicant(s) Name: TDK Corp.Address: Inventor(s) Name: Ito Ichiyuki;Okita Yoshihisa;Tanaka KatsuakiPatent Agency Code: 11105Patent Agent: ma yingAbstract This PWM inverter apparatus includes a first and second current control type semiconductor switching elements connected in series which are connected in parallel to a DC Read more

Digital up converter integrating more modulation functions

Application Number: 00119754Application Date: 2000.08.24Publication Number: 1340972Publication Date: 2002.03.20Priority Information: International: H04Q7/20;H04Q7/30Applicant(s) Name: Huawei Technology Co LtdAddress: Inventor(s) Name: Jiang Huabing;Gui Yijun;Yu LinPatent Agency Code: 31100Patent Agent: zhou chengAbstract A digital up-converter of frequency, which integrates the GSMK, 8PSK and other modulation mode functinos, is composed of timing module, data RAM module, digital modulation module, Read more

General modem and its modulation and demodulation method in transceiver

Application Number: 00119766Application Date: 2000.08.23Publication Number: 1325214Publication Date: 2001.12.05Priority Information: International: H04L27/10;H04L27/18Applicant(s) Name: Zhongxing Communication Co., Ltd., ShenzhenAddress: Inventor(s) Name: Wang Yan;Dong Hui;Zhu XiaohongPatent Agency Code: 00000Patent Agent: Abstract The general-purpose modem equipment in transceiver comprises general-purpose modulation module, general-purpose demodulation module, upper variable frequency conversino module, lower variable frequency conversion module and clock and Read more

Eight-phase phase-shift keying (PSK) modulation method and device

Application Number: 00119856Application Date: 2000.08.31Publication Number: 1340975Publication Date: 2002.03.20Priority Information: International: H04L27/18;H04Q7/20Applicant(s) Name: Huawei Technology Co LtdAddress: Inventor(s) Name: Wang Jing;Yu LinPatent Agency Code: 31100Patent Agent: zhou chengAbstract An eight-phase phase-shift keying (PSK) modulation method and its device is disclosed. The product factor of sign vector and shaping filter coefficient is stored in the table. Read more

Pulse width modulation control system

Application Number: 00120748Application Date: 2000.07.07Publication Number: 1280418Publication Date: 2001.01.17Priority Information: 1999/7/9 KR 27754/1999International: H02M5/458;H02P7/63;H03K3/00Applicant(s) Name: LG Industrial System Co., Ltd.Address: Inventor(s) Name: Pae Gyo-SongPatent Agency Code: 11219Patent Agent: yu mangAbstract The present invention relates to a pulse width modulation control system, comprises a counter which sets initial voltage value differently and outputs chopping wave crossed Read more

Feedforward linear powder amplifier circuit and the method of counteracting AC modulation signal in carrier signal directly

Application Number: 00121394Application Date: 2000.07.27Publication Number: 1336719Publication Date: 2002.02.20Priority Information: International: H03F1/00;H03F1/32Applicant(s) Name: Huawei Techn. Co., Ltd.Address: Inventor(s) Name: Yin Weimin;Jiao LiuyanPatent Agency Code: 00000Patent Agent: Abstract A feedforward linear power amplifying circuit consists of intermodulation signal collecting unit and intermodulation signal cancelling unit, in which, the circuit of the invention comprises the unit of Read more

Selective areal epitaxy process of producing electrically absorption modulation and distributing feedback laser

Application Number: 00109780Application Date: 2000.07.06Publication Number: 1332501Publication Date: 2002.01.23Priority Information: International: H01S5/026Applicant(s) Name: Inst. of Semiconductors, Chinese Academy of SciencesAddress: Inventor(s) Name: Liu Guoli;Wang Xu;Chen WeixiPatent Agency Code: 11021Patent Agent: tang baobengAbstract The selective areal epitaxy process of producing electrically absorption modulation and distributing feedback laser includes the steps of: depositing SiO2 layer on InP Read more

Modulation assembly for digital TV set

Application Number: 00109168Application Date: 2000.06.14Publication Number: 1278137Publication Date: 2000.12.27Priority Information: 1999/6/22 JP 175180/99International: H04N5/44Applicant(s) Name: ALPS Electric Co., Ltd.Address: Inventor(s) Name: Suzuki Takeo;Koyama Akira;Osada ShigeruPatent Agency Code: 11216Patent Agent: liu jiyangAbstract A digital television tuner is realized. The digital television tuner includes a frequency conversion device for converting the frequency of a digital television signal Read more

Digital realizing method for high speed random code modulation

Application Number: 00109033Application Date: 2000.06.05Publication Number: 1327160Publication Date: 2001.12.19Priority Information: International: G01S7/40Applicant(s) Name: Wenting Science and Technology Development Co., Ltd., BeijingAddress: Inventor(s) Name: Yu Daoheng;Dong Yonghong;Jin MingwuPatent Agency Code: 11127Patent Agent: liu shichangAbstract The digital method of realizing high speed random modulation includes the following steps: inputting required parameters via computer and feeding them into Read more

Pulse width modulation control equipment

Application Number: 00108755Application Date: 2000.05.31Publication Number: 1296329Publication Date: 2001.05.23Priority Information: 1999/6/1 EP 99401317.5International: H02M1/00;H02M7/5395;H04N5/63Applicant(s) Name: SEmiconductor Element Industries Inc.Address: Inventor(s) Name: Joseph Haramic;Fransova Lehemit;Juraier TurkyPatent Agency Code: 11038Patent Agent: ma gaoAbstract A pulse Width Modulation (PWM) control circuit is used in a switched-mode power supply (SMPS) having a normal mode and a standby mode, for Read more

Optical network with optical channel monitoring apparatus using polarization modulation and its method

Application Number: 00103185Application Date: 2000.03.20Publication Number: 1267973Publication Date: 2000.09.27Priority Information: 1999/3/19 KR 9445/99International: H04B10/08Applicant(s) Name: LG Information & Communications Ltd.Address: Inventor(s) Name: Rah GvwoonPatent Agency Code: 11219Patent Agent: yu mangAbstract The present invention uses at least one polarization modulation unit to be able to distinguish and transmit every optical signal channels based on a polarization Read more

Difference quadrature phase shift key base-frequency modulation device and method

Application Number: 00100189Application Date: 2000.01.13Publication Number: 1304246Publication Date: 2001.07.18Priority Information: International: H04L27/20Applicant(s) Name: Lingyuan Communication Co., Ltd.Address: Inventor(s) Name: Wu Mingzhou;Zeng XuxiangPatent Agency Code: 72002Patent Agent: xu xianAbstract A differential quadrature phase key-shifting base-frequency modulation equipment used in communication system includes: storage unit, parameter of a low-pass filter with storing simplified and corresponding list data; Read more