Mainboard interface integrated various display driving circuit

Application Number  00128242 Application Date  2000.12.18 Publication Number  1359047 Publication Date  2002.07.17 Priority Information     International Classification  G06F3/00   Applicant(s) Name  Legend (Beijing) Co., Ltd.   Address     Inventor(s) Name  Zhu Yongjin   Patent Agency Code  11127 Patent Agent  liu fang AbstractThe main board interface device for integrated multi-purpose display driving circuit is Read more

Automatic phase failure control circuit for triphase power supply

Application Number: 00110921Application Date: 2000.02.29Publication Number: 1267937Publication Date: 2000.09.27Priority Information: International: H02H3/00;H02H3/253Applicant(s) Name: Chu YanzhiAddress: Inventor(s) Name: Chu YanzhiPatent Agency Code: 37209Patent Agent: yi weilinAbstract The automatic control circuit consists of upper power source detector of one SCR, lower power source detector with three photoelectric couplers controller of one other SCR and stepdown rectifier comprising Read more

Method for connection of music rhythm signal conversion circuit

Application Number: 00116127Application Date: 2000.09.23Publication Number: 1346124Publication Date: 2002.04.24Priority Information: International: G10H1/18Applicant(s) Name: Chen MingdengAddress: Inventor(s) Name: Chen MingdengPatent Agency Code: 00000Patent Agent: Abstract The present invention relates to a connection method of music rhythm signal conversion circuit, and is characterized by that the related unit circuit including voice-frequency signal device, tone controller, amplifier, voice-frequency Read more

Film-type switching circuit board with pressure-regulatable air chamber

Application Number: 00118354Application Date: 2000.06.13Publication Number: 1328281Publication Date: 2001.12.26Priority Information: International: G06F3/02;H01H13/70Applicant(s) Name: Dafang Electronic Co LtdAddress: Inventor(s) Name: Ye JibinPatent Agency Code: 11105Patent Agent: ma yingAbstract A film-type switch circuit board for computer keyboard is disclosed. Said computer keyboard is composed of base, at least one key structure and said circuit board, which consists Read more

Printing circuit board mount for monitor

Application Number: 00119314Application Date: 2000.06.29Publication Number: 1293535Publication Date: 2001.05.02Priority Information: 1999/10/19 KR 45400/99International: G12B9/10;H05K7/14Applicant(s) Name: Samsung Electronics Co., Ltd.Address: Inventor(s) Name: Zhao Nam-Il;Lee Gyong-KeunPatent Agency Code: 11105Patent Agent: hou yuAbstract A printed circuit board bracket for a monitor has a bottom plate including a corrugated part formed at a predetermined portion of the bottom plate Read more

Code division multiple access mobile communication system, search circuit and communication method

Application Number: 00120367Application Date: 2000.06.02Publication Number: 1276656Publication Date: 2000.12.13Priority Information: 1999/6/2 JP 154455/99International: H04J13/00;H04Q7/20Applicant(s) Name: NEC Corp.Address: Inventor(s) Name: Hirata KatsuPatent Agency Code: 72001Patent Agent: li efeiAbstract A CDMA mobile communication device realizes a CDMA communication by combining outputs of finger circuits performing despreading for reception signals. The CDMA mobile communication device includes subtracted performing Read more

Ballast cut-off circuit for gas discharge lamp

Application Number: 00121669Application Date: 2000.07.21Publication Number: 1282201Publication Date: 2001.01.31Priority Information: 1999/7/21 US 09/358631International: H05B41/14Applicant(s) Name: General Electric Co.Address: Inventor(s) Name: L.R. NeronePatent Agency Code: 72001Patent Agent: luo pengAbstract A ballast circuit 10 for a gas discharge lamp 14, incorporates a shutdown circuit 12 for limiting voltage output of a d.c.-to-a.c. converter 21. The shutdown circuit Read more

Phase-locked loop control circuit and control method

Application Number: 00122807Application Date: 2000.08.25Publication Number: 1286531Publication Date: 2001.03.07Priority Information: 1999/8/25 JP 238254/1999International: H03L7/08;H03L7/00;H03B19/12Applicant(s) Name: NEC Corp.Address: Inventor(s) Name: Usui HisayoshiPatent Agency Code: 11219Patent Agent: mu dejunAbstract In the PLL, the outputs of a reference frequency oscillator (101) and a VCO (102) are frequency divided by variable frequency dividers (104, 105), respectively, and the outputs Read more

Self-locking type electromagnetic valve and ccotrol circuit thereof

Application Number: 00124237Application Date: 2000.07.03Publication Number: 1285479Publication Date: 2001.02.28Priority Information: 1999/7/2 US 09/347043International: F16K31/08;H01F7/08Applicant(s) Name: Mac Valve Inc.Address: Inventor(s) Name: E.P. Yansen;T.R. JonesPatent Agency Code: 72001Patent Agent: yang songlingAbstract A self-latching solenoid valve assembly and a control circuit including a valve body having a pressurized air supply inlet port. A valve member is supported in Read more

Whole or partial circuit protecting external shell sturcture capable of forming antenna and receiving small-portable device

Application Number: 00125981Application Date: 2000.10.11Publication Number: 1292583Publication Date: 2001.04.25Priority Information: 1999/10/11 EP 99120230.0International: H01Q1/27;G04B47/00Applicant(s) Name: Asulab S.A.Address: Inventor(s) Name: J.-F. Chichel;O. Stobou;A. SkrivervickPatent Agency Code: 72001Patent Agent: cui yaobengAbstract The present invention relates to a structure forming an antenna(10)intended for a portable unit of small volume, and including a radiating element(20)of substantially rectangular shape arranged Read more

Network switch between internal and external networks and its switch circuit

Application Number: 00111154Application Date: 2000.06.23Publication Number: 1331439Publication Date: 2002.01.16Priority Information: International: G06F1/16Applicant(s) Name: Yu YongAddress: Inventor(s) Name: Yu YongPatent Agency Code: 37108Patent Agent: zhang weidouAbstract A network switch between internal and external networks is a printed circuit board (PCB) which has a plug in PCB mode for matching with ISA slot of computer, a stop Read more

Over-voltage and over-current warming circuit for protection unit of main distribution frame

Application Number: 00117273Application Date: 2000.07.18Publication Number: 1334628Publication Date: 2002.02.06Priority Information: International: H02H9/00;H02H9/02;H02H9/04;G01R19/165Applicant(s) Name: Huawei Electric Co., Ltd, Shenzhen CityAddress: Inventor(s) Name: Liu LianbingPatent Agency Code: 00000Patent Agent: Abstract A kind of a alarm circuit protecting over voltage and over current used in secure unit on main distribution frame is disclosed in this invention. It has Read more

distortion correction circuit for TV set

Application Number: 00118355Application Date: 2000.06.13Publication Number: 1278136Publication Date: 2000.12.27Priority Information: 1999/6/18 DE 19927782.6International: H04N3/233;H04N5/74Applicant(s) Name: Deutsche Thomson-Brandt GmbHAddress: Inventor(s) Name: Friderick Hayzman;Gunter Gram;Albert LantzPatent Agency Code: 11105Patent Agent: ma yingAbstract In order to correct deflection errors in a television set, for example to correct vertical convergence in a projection television set, it is known for Read more

Integrated circuit semiconductor device and self-repairing circuit and method for built-in storage

Application Number: 00119316Application Date: 2000.06.29Publication Number: 1307341Publication Date: 2001.08.08Priority Information: 2000/1/28 KR 04376/00International: G11C7/00;G11C7/24Applicant(s) Name: Samsung Electronics Co., Ltd.Address: Inventor(s) Name: Bak Chin-Yong;Kim Heun-CholPatent Agency Code: 11105Patent Agent: ma yingAbstract An integrated circuit semiconductor device comprises a built-in self-repair (BISR) circuit including a plurality of row fill entries and a plurality of column fill entries Read more

Thin-film circuit board for keyboard

Application Number: 00120382Application Date: 2000.07.17Publication Number: 1334578Publication Date: 2002.02.06Priority Information: International: G06F3/02;H01H13/702Applicant(s) Name: Dafang Electronic Co., LtdAddress: Inventor(s) Name: Liao BingqianPatent Agency Code: 11105Patent Agent: li xiaoshuAbstract A thin film circuit board used in keyboard consists of thin film switch circuit and structure of line bank, the former is utilized to produce key-press signal and Read more

Semiconductor integrated circuit and checking method, crystal device and electronic device

Application Number: 00121735Application Date: 2000.07.24Publication Number: 1282108Publication Date: 2001.01.31Priority Information: 2000/6/7 JP 170271/00; 1999/7/23 JP 209314/99International: G01R31/28;G02F1/133;H01L21/66;H01L27/02Applicant(s) Name: Seiko Epson Corp.Address: Inventor(s) Name: Aoki Shigeki;Uejo HaruoPatent Agency Code: 72001Patent Agent: yang kaiAbstract A semiconductor integrated circuit can change the pulse width of a reset signal for initializing the latch output, in which the pulse width Read more

Quartz oscillating circuit

Application Number: 00122812Application Date: 2000.08.28Publication Number: 1286526Publication Date: 2001.03.07Priority Information: 1999/9/1 JP 246854/99International: H03B5/36Applicant(s) Name: Alps Electric Co., Ltd.Address: Inventor(s) Name: Kiyomizu Takeshi;Kumaki MasatakaPatent Agency Code: 11216Patent Agent: liu jiyangAbstract The object of the present invention is to prevent apparent Q of a crystal oscillation from lowering and to prevent the stoppage of oscillation, when Read more

Automatic frequency control circuit

Application Number: 00124239Application Date: 2000.06.24Publication Number: 1279547Publication Date: 2001.01.10Priority Information: 1999/6/25 JP 180618/99International: H04B1/16;H04J13/02Applicant(s) Name: NEC Corp.Address: Inventor(s) Name: Hasegawa OsamuPatent Agency Code: 72001Patent Agent: li efeiAbstract In an AFC (Automatic Frequency Control) circuit, a frequency offset estimating circuit (11) produces a lock signal (102) if a calculated frequency error becomes smaller than a predetermined Read more

Return circuit breaker for primary power transmission

Application Number: 00125996Application Date: 2000.10.17Publication Number: 1303114Publication Date: 2001.07.11Priority Information: 1999/10/21 JP 300136/1999International: H01H73/04;H01H73/20;H01H71/00;H01H71/08Applicant(s) Name: Kawamura Electric, Inc.Address: Inventor(s) Name: Kato HiroakiPatent Agency Code: 11038Patent Agent: ji xianggangAbstract PROBLEM TO BE SOLVED: To provide a circuit breaker for primary transmission that is easily assembled only by dividing the housing into two parts. SOLUTION: A stationary Read more

Warning and delaying circuit

Application Number: 00111277Application Date: 2000.08.10Publication Number: 1337782Publication Date: 2002.02.27Priority Information: International: G08B23/00;H03K17/28Applicant(s) Name: Tian NaixinAddress: Inventor(s) Name: Tian NaixinPatent Agency Code: 00000Patent Agent: Abstract The alarm time-delay circuit is characterized by that at the control end of D.C. relay for controlling power supply of alarm signal generator a transistor is connected for controlling break-make of Read more

Technological process of making printed circuit board

Application Number: 00117305Application Date: 2000.07.26Publication Number: 1335743Publication Date: 2002.02.13Priority Information: International: H05K3/16;H05K3/46Applicant(s) Name: Zhao YuantaoAddress: Inventor(s) Name: Zhao YuantaoPatent Agency Code: 44209Patent Agent: wang zhimengAbstract The technological process of making printed circuit board includes: coating or adhering one layer of photosensitive material onto one insulating substrate; exposure and development to obtain the negative of the Read more

Output clock integrated circuit with phase displacement produced by clock signal

Application Number: 00118458Application Date: 2000.06.29Publication Number: 1280419Publication Date: 2001.01.17Priority Information: 1999/6/29 DE 19929801.7International: G06F1/04;H03K5/00;H03K5/159Applicant(s) Name: Infineon Technology Corp.Address: Inventor(s) Name: P. Heine;T. Heiden;T. PatschPatent Agency Code: 72001Patent Agent: zheng lizhuAbstract The integrated circuit generates an output clock signal with a phase shift relative to a first clock signal. The currents IE=I1 and IL=I2 can be Read more

Repeat circuit

Application Number: 00119335Application Date: 2000.06.28Publication Number: 1283908Publication Date: 2001.02.14Priority Information: 1999/8/9 JP 225093/1999International: H04L12/00Applicant(s) Name: Fujitsu Ltd.Address: Inventor(s) Name: Maruyama Ichiyoshi;Ohayashi Toshitsugu;Hamannaka NaoudoPatent Agency Code: 11038Patent Agent: yang guoxuAbstract The trunk circuit is connected to an opposite device via lines A, B and configured to attain interface control between an electronic exchange and the opposite Read more

D/A converter circuit and semiconductor device

Application Number: 00120391Application Date: 2000.05.17Publication Number: 1280420Publication Date: 2001.01.17Priority Information: 1999/5/17 JP 136090/99International: H03M1/00Applicant(s) Name: Semiconductor Energy Laboratory Co., Ltd.Address: Inventor(s) Name: Nagao YoshiPatent Agency Code: 72001Patent Agent: zhang zhichengAbstract The present invention provides a DAC whose area is held down and a semiconductor device using the DAC are fabricated. A D/A conversion circuit is Read more

Driving integrated circuit for display and electronic device using said IC

Application Number: 00121739Application Date: 2000.07.24Publication Number: 1282166Publication Date: 2001.01.31Priority Information: 1999/7/23 JP 208965/99International: G06F13/00;H04L29/00Applicant(s) Name: Seiko Epson Corp.Address: Inventor(s) Name: Yasue TadashiPatent Agency Code: 72001Patent Agent: yang kaiAbstract A display driver IC which adopts a serial transmission system to reduce the number of terminal pins, transmits a command and data efficiently and also can speed-up Read more

Engraving method of circuit board and its equipment

Application Number: 00122894Application Date: 2000.08.29Publication Number: 1282202Publication Date: 2001.01.31Priority Information: International: H05K3/04Applicant(s) Name: Heyu Precision Science & Technology Co. Ltd.Address: Inventor(s) Name: Zheng YuanlongPatent Agency Code: 11127Patent Agent: li qiangAbstract The method for carving circuit board includes the following steps: firstly, fixing the circuit board on the machine table, using carving tool connected with control Read more

Multi-mode power converter with equalizer circuit and its operational method

Application Number: 00124248Application Date: 2000.08.14Publication Number: 1284777Publication Date: 2001.02.21Priority Information: 1999/8/13 US 09/374180International: H02J7/00;H02M7/00Applicant(s) Name: Palwy Power Equipment Co.Address: Inventor(s) Name: R.W. Johnson Jr.;W.J. RattiPatent Agency Code: 72001Patent Agent: wu zengyongAbstract A power converter includes first and second voltage busses and a neutral bus. A first switching circuit, e.g., a rectifier circuit, is operative to Read more

Circuit breaker type switch power source

Application Number: 00126029Application Date: 2000.08.24Publication Number: 1285648Publication Date: 2001.02.28Priority Information: 1999/8/24 JP 236376/99International: H02M3/00;H02M3/338Applicant(s) Name: Funai Electric Co., Ltd.Address: Inventor(s) Name: Higuchi YoshiyuPatent Agency Code: 72001Patent Agent: zheng lizhuAbstract An oscillation circuit 1 for controlling the on/off operation of a main switching element 5 is arranged to include a first inductor L1 coupled at its Read more

DMA control method and circuit for monochip computer system

Application Number: 00112020Application Date: 2000.01.14Publication Number: 1258886Publication Date: 2000.07.05Priority Information: International: G06F13/00Applicant(s) Name: Nanjing Univ.Address: Inventor(s) Name: Liu Xiankun;Xu JianjianPatent Agency Code: 32204Patent Agent: chen jianheAbstract The DMA control method is realized by adopting "RAM transfer" mode, that is, DMA control module is connected to monochip computer system and then connected to RAM. DMA control Read more

Li-ion battery with chip controlled step-up circuit

Application Number: 00117547Application Date: 2000.10.31Publication Number: 1351388Publication Date: 2002.05.29Priority Information: International: H01M10/42;H02J7/00Applicant(s) Name: Xiao YunshengAddress: Inventor(s) Name: Xiao YunshengPatent Agency Code: 00000Patent Agent: Abstract A Li-ion battery with chip controlled step-up circuit is composed of 3.6V Li-ion core, charge protector and step-up circuit. Said protector can implement the protection to over-change, over-discharge and short circuit. Read more