baber/WOPTO huggingface dataset:
Patent NL-8300207-A (NL)
IPC: B23K37/04
Filed: 1983-01-20
Abstract: A device for welding together coaxial tube sections (1,2), comprising a cage (3) adapted to surround the extremities of said tube sections (1,2), and provided with sleeves (4,5) to be clamped on said tube sections (1,2) for aligning the latter, guiding means (13,14) for welding electrode carriers (15..23) being connected to said sleeves (4,5) which are adapted to guide welding electrodes and associated equipment along the welding seam to be formed between said tube sections (1,2).
Patent NL-8501479-A (NL)
Title: Roof-mounted air extractor - has standard mounting plate and vertical through duct in same material welded to it contg. fan
IPC: F24F7/02
Filed: 1985-05-23
Abstract: The air extract unit comprises a roof mounting plate (1), an extract duct (2), a fan (7,8) and a number of releasable components. These comprise a diaphragm assembly with adjustable opening to fit at the duct inlet during the winter or an inlet ring for summer operation. The duct (2) is welded to the mounting plate and consists of the same material. The plate is pref. a standard item e.g. having a flat central portion and a perimeter portion contoured to fit corrugated roofing. The elliptic opening for securing the duct is cut to suit the roof pitch angle before welding. The fan is pref. secured via a spider.
Patent NL-8700217-A (NL)
Title: Heat-insulating anchor connecting hot reaction chamber to surround - has 2 brackets with weld-end and/or screw-end pins and facing flat portions embedded in pressed insulation material
IPC: F16L59/135
Filed: 1987-01-29
Abstract: The heat-insulating anchor is intended for connecting the wall of a hot reaction chamber to a protecting surround. It comprises a bracket with pin, of which the end is welded to the inner surface of the surround or has screw thread for securing by a nut, and a bracket with threaded pin to secure to the chamber wall. The brackets have their flat portions parallel and facing one another and are, together, embedded in pressed insulating material, pref. Ca (or Al) silicate. The flat portions preferably have one or more cut-outs and the (e.g. stainless steel) brackets may have hooked ends.
Patent NL-8702779-A (NL)
IPC: G11B5/09
Filed: 1987-11-20
Abstract: An apparatus for reproducing a binary digital signal from a track on a magnetic record carrier (1) has a read head (2) with a gap having a gap length (g) which complies with 1.5b </= g </= 2.2b, but which preferably complies with g=2b, b being the bit length of the bits in the digital signal recorded in the record carrier (1). If the read head is followed by a filter device (12) having the characteristic of a Nyquist-1 filter (N1), the overall response of the read head and the filter device will be substantially the same as the response of a class-4 partial-response system (PRF).
Patent NL-8900914-A (NL)
Title: Sulphided catalyst for treatments with hydrogen - comprising support carrying active metal and enclosed in protective material of high mol. wt.
IPC: B01J33/00
Filed: 1989-04-12
Abstract: Sulphided catalyst, for treatment with H2, comprises a support onto which one or more metal cpds. have been applied, and is enclosed in a protective material of high mol.wt., to prevent reaction between the S in the catalyst and components of the surrounding atmos.
Patent NL-9202255-A (NL)
Title: Locating of vehicles
IPC: B60R25/04
Filed: 1992-12-24
Abstract: To track, for example, vehicles which have been stolen, use is made of, for example, a dealer or garage chain. This is achieved by providing the vehicle with an immobilizer which is used to terminate effective use of the vehicle. Since the garage or dealer, in order to replace or reset the immobilizer, has to contact head office, the authorized body, it is easy to locate the vehicle. The stolen vehicle can then be claimed on site or collected.
Patent OA-10770-A (OA)
Title: Method of qualifying a borehole survey
Inventor: HARTMANN ROBIN ADRIANUS
IPC: E21B47/022
Filed: 1998-05-19
Abstract: A method of qualifying a survey of a borehole formed in an earth formation is provided. The method comprises the steps of: a) selecting a sensor for measuring an earth field parameter and a borehole position parameter in said borehole; b) determining theoretical measurement uncertainties of said parameters when measured with the sensor; c) operating said sensor so as to measure the position parameter and the earth field parameter at a selected position in the borehole; d) determining the difference between the measured earth field parameter and a known magnitude of said earth field parameter at said position, and determining the ratio of said difference and the theoretical measurement uncertainty of the earth field parameter; and e) determining the uncertainty of the measured position parameter from the product of said ratio and the theoretical measurement uncertainty of the position parameter.
Patent OA-10803-A (OA)
Title: Process for preparing 2,4-dihydroxypyridine and 2,4-dihydroxy-3-nitropyridine
Inventor: TRUESDALE LARRY K
IPC: C07D473/00
Filed: 1998-07-01
Abstract: The present invention is directed to a process for preparing 2,4-dihydroxypyridine comprising heating a compound of formula A wherein R is H, alkyl or aralkyl and phosphoric acid where the ratio of phosphoric acid to water is not less than about 27 to 1 weight %. The invention is also directed to a process for preparing 2,4-dihydroxy-3-nitropyridine comprising reacting 2,4-dihydroxypyridine with nitric acid. The processes of the present invention prepare intermediates which are useful in preparing compounds which are useful for treating cardiovascular disease marked by hypertension or myocardial ischemia, ameliorating ischemic injury or myocardial infarct size, or treating hyperlipidemia or hypercholesterolemia.
Patent PT-72084-A (PT)
Title: Process for the preparation of acyl derivatives
IPC: C07D501/36
Filed: 1980-11-20
Abstract: For the Contracting States : BE, CH, DE, FR, GB, IT, LI, LU, NL, SE 1. A process for the manufacture of acyl derivatives of general formula I  see diagramm : EP0030294,P12,F1  in which R represents hydrogen or a readily hydrolyzable ester group, as well as of salts of these compounds and hydrates of these compounds or of their salts by reating a halide of general formula II  see diagramm : EP0030294,P12,F2  in which R has the significance given above and Y represents a halogen atom, or a salt of this compound with thiourea and, if desired, converting a compound of formula I obtained into a salt or hydrate or into a hydrate of this salt, characterized in that X signifies one of the groups  see diagramm : EP0030294,P13,F3  in which R' represents hydrogen or a readily hydrolysable ether group.
Patent PT-87678-A (PT)
Inventor: MARFAT ANTHONY
IPC: C07D513/04
Filed: 1988-06-08
Abstract: 3,4-Dihydro-2-R2-3-oxo-N-Ar-2H-(1)benzothieno (3,2-e)-1,2-thiazine- 4-carboxamide-1,1-dioxide derivs. of formula (I) and their pharmaceutically acceptable salts are new, where R1 = H, halo or 1-4C alkyl; R2 = H or 1-4C alkyl; Ar = phenyl opt. substd. by 1-4C alkyl, halo, CF3, NO2, OH, halophenyl or 1-4C alkoxy.
Patent PT-90393-A (PT)
Title: Analgesic compsns. - contg. mixed vegetable extracts, theobromine and caffeine
IPC: A61K9/28
Filed: 1989-04-27
Abstract: The active ingredients of the therapeutic compsn. are vegetable extracts of (a) Gentiana lutea, L.0.01-85 pts. by wt.; (b) Valerina officinalis, Val. 0.3-200 pts.; (c) Passiflora incarnata. L. 0.05-85 pts.; (d) Piscidia erytherina, L. 0.02-200 pts.; (e) Calluna vulgaris, L. Hull 0.05-185 pts.; (f) Filipendula ulmaria, L. 0.05-135 pts.; (g) natural cola extract 0.05-250 pts.; (h) theobromine 0.5-85 pts.; and (i) caffeine 0.1-125 pts. @(Dwg.No.0/0).
Patent PT-91263-A (PT)
Title: Process for manufacturing insulators
IPC: H01B/
Filed: 1989-07-24
Abstract: Novel process for manufacturing insulators, based on synthetic resins coated with a film of thermoplastic material. This process produces an insulator composed of an inner structure of synthetic resin, of high dielectric and mechanical properties, coated with a film of anti- impact, self-extinguishing and non-combustible plastic material which is free from roughnesses. These insulators may be used in low- and medium-voltage installations, in the distribution of electrical energy and in telecommunications. This novel manufacturing process is characterized in that, to replace the metallic mould, use is made of a mass-produced outer casing of thermoplastic material composed of two parts which fit together perfectly, and which have two or more orifices where metallic inserts, which may be nuts, cores or threaded bolts, are applied. The outer casings of thermoplastic material, after they have been placed on presentation pallets, then have the synthetic resin and the respective additives poured inside them and they are then given the respective covers with the other metallic insert, then being conveyed to an oven with a controlled temperature cycle. The process for manufacturing insulators based on synthetic resins described in this patent allows the use of large numbers of moulds and therefore the mass- production of these insulators, which was not economically viable with those using the large metallic moulds characteristic of current processes, given the immobilization time thereof which was necessary during the manufacturing process, thereby drastically reducing the costs inherent in current processes.
Patent PT-94715-A (PT)
IPC: A61K8/49
Filed: 1990-07-17
Abstract: The present invention relates to water-based cosmetics, in particular hair cleansers and body cleansers and also skin creams which contain, as preservative system, 0.1-0.5% by weight of 1,3-bis(hydroxymethyl)-5,5-dimethylhydantoin, 0.05-0.5% by weight of an organic complexing agent, preferably EDTA, and 0.1-0.5% by weight of a water-soluble benzoic acid salt, in particular sodium benzoate. This preservative system not only has an excellent effectiveness, but also has good skin compatibility.
Patent PT-96016-A (PT)
Inventor: PAQUES ERIC-PAUL
IPC: A61K38/18
Filed: 1990-11-28
Abstract: Liquid drugs for subcutaneous (sc) or intramuscular (im) administration containing a polypeptide and at least one amino acid, a process for the production of a drug of this type, and the use of an amino acid in a polypeptide solution which is suitable for sc or im administration are described.
Patent SI-20277-A (SI)
Title: Ultra-high strenght dual phase steels with excellent cryogenic temperature toughness
Inventor: KOO JAYOUNG
IPC: C21D1/02
Filed: 1998-06-18
Abstract: An ultra-high strength, weldable, low alloy, dual phase steel with excellent cryogenic temperature toughness in the base plate and in the heat affected zone (HAZ) when welded, having a tensile strength greater than 830 MPa (120 Ksi) and a microstructure comprising a ferrite phase (14) and a second phase of predominantly lath martensite and lower bainite (16), is prepared by heating a steel slab comprising iron and specified weight percentages of some or all of the additives, carbon, manganese, nickel, nitrogen, copper, chromium, molybdenum, silicon, niobium, vanadium, titanium, aluminum and boron; reducing the slab to form plate in one or more passes in a temperature range in which austenite recrystallizes; further reducing the plate in one or more passes in a temperature range below the austenite recrystallization temperature and above the Ar3 transformation temperature; finish rolling the plate between the Ar3 transformation temperature and the Arl transformation temperature; quenching the finish rolled plate to a suitable Quench Stop Temperature (QST); and stopping the quenching.
Patent UA-12901-A (UA)
Title: system of drainage and pressurization of fuel tanks of aircraft by inert gas
Filed: 1990-01-02
Abstract: Invention relates to the aviation, fuel systems of aircraft and concerns the device of drainage system and fuel tank pressurization by inert gas. The system of drainage and pressurization of fuel tank of aircraft by inert gas contains a collector conduit, which reports the tanks of the consumption of fuel with the central tank, two-position switch in a collector conduit, a conduit for discharge of gas, a conduit for supply of inert gas into the tanks with closing electric cranes and nozzles, safety and vacuum valves in the line, which connects the air intake of drainage with central tank.
Patent UA-6672-A (UA)
Title: Method for obtaining of composition coatings based on nickel
Filed: 1990-04-09
Abstract: A method for obtaining of composition coatings based on nickel, predominantly on surface of lengthy articles comprises the application of disperse particles on surface of articles and them silting by deposition of nickel from sulphatic and sulphamate electrolytes. The application of disperse particles is carried out by contact of articles surface with foam-rubber pillow surface of which from the article side preliminary is moistened with "Progress" washing agent and is saturated with disperse particles.
Patent UA-18837-A (UA)
Title: A composition of high temperature heat insulation articles
Filed: 1990-07-02
Abstract: A composition of high temperature heat insulation articles comprises fiber of zirconium dioxide, stabilized with yttrium oxide, basic carbonate and water-soluble salt of metal, yttrium oxide or yttrium chloride. The composition contains basic zirconium carbonate and water-soluble salt of zirconium as basic carbonate and water-soluble salt of metal.
Patent AT-A20882000-A (AT)
IPC: C08G12/32
Filed: 2000-12-15
Abstract: Aminoplast resins are cured using inorganic particles as curing agents. The inorganic particles have a laminated structure and include interlamellarly exchangeable cations such as alkali cations, alkaline-earth cations, aluminum cations, iron cations and/or manganese cations. The aminoplast resins may be cured to produce semi-finished products and molding materials.
Patent AT-A21052003-A (AT)
IPC: B04C5/103
Filed: 2003-12-30
Abstract: Guiding device comprises a base plate (3) with a recess (12) arranged in the region of the inlet opening (16). Independent claims are also included for the following: (1) Immersion pipe for a guiding device of a cyclone; and (2) Cyclone containing the guiding device. Preferred Features: Two or more baffles (2) and a corresponding number of recesses are provided in the base plate in the region of the inlet openings (16) formed between the baffles. A section of the contour of the recesses is formed in the base plate by an inlet edge lying parallel to the baffle. The guiding device has a cylindrical wall (1) to which a section of a baffle is connected.
Patent BG-101837-A (BG)
Title: Laminar-built bodies for liquid absorption, their manufacture and application
Inventor: BRUEGGEMANN HELMUT
IPC: A61L15/60
Filed: 1997-08-19
Abstract: The laminar bodies of this type are used in hygiene products,as components in natural or artificial soils, as insulationmaterial in pipes and conductors, basically cables, in civilstructures and as an absorption and liquid conserving component inpackaging mateirals or in clothing elements. They have increasedabsorption capability to water and aqueous solutions, inparticular under loading. The laminar bodies consists of at leastone layer of polymer foam and superabsorption polymerisate in bulkform for the absorption of water or aqueous solutions which on,between or under the foamed polymer layer contain thesuperabsorber evenly distributed and/or in a different presetmanner, in quantitative ratio of the polymer foam to absorber of1:500 to 50:1. The polymer foam can contain fillers, pigmentsand/or synthetic fibres. The bodies are made when the foam isplaced over a plane and the superabsorber is applied in a presetselected quantitative ratio, optionally by using of templets andis fixed by heat treatment.26 claims
Patent BG-101976-A (BG)
Title: Packaging machine
Inventor: PETROV PLAMEN V
IPC: B65B3/02
Filed: 1997-10-16
Abstract: The machine is used for foodstuff packaging in plastic foilpackings. It has simplified design and increased productivity andreduced production costs. It consists of supporting frame (1),topmost on which a funnel (3) is mounted. A filling tube (4) isfitted under funnel (3) in the lower part of which a device (9)for vertical welding seam is placed and jaws (15 & 16) are fittedfor welding a lateral seam. A trolley (13) is fitted under thefilling tube (4) on which jaws (15 & 16) are resting. A plate (12)having a profile surface is mounted on device (9). One of the jaws(15) has a mobile welding knife (17) in which a cutiing knife (23)is fixed, and the other jaw (16) has a fixed welding knife (26) inwhich a heater is fitted. A longitudinal groove (27) is machinedin the middle of the welding knife (26) the position of whichmatches the positioning of the blade (24) of cutting knife (23).5 claims, 3 figures
Patent BG-104218-A (BG)
Title: Gear threaded implant
Inventor: LAZAROV JORDAN G
IPC: A61C8/00
Filed: 2000-03-06
Abstract: The gear threaded implant is made of titanium alloy and shall find application in dental implant technology. The implant is made of a minimum number of basic parts: root implant body (1) and super gingival superstructure (2), the connection between the two being made by means of a conical-pressing fitting. 10 claims, 7 figures
Patent BG-106441-A (BG)
Title: Mesoprogestins (progesterone receptor modulators) as a component of female contraceptives
Inventor: CHWALISZ KRISTOF
IPC: A61P15/18
Filed: 2002-02-26
Abstract: The present invention relates to the use of mesoprogestins for the production of a pharmaceutical for female contraception, to a pharmaceutical preparation for female contraception and to a method of female contraception administering effective amount of a mesoprogestin in a female desiring contraception. Optionally the mesoprogestin can be used in combination with an estrogen. Mesoprogestins are defined as compounds possessing both agonistic and antagonistic activities at the progesterone receptor (PR) in vivo. They stabilize the function of PR at an intermediate level of agonistic and antagonistic. Corresponding functional states cannot be achieved with progestins or antiprogestins. J867, J912, J956,and J1042 are the mesoprogestins preferred according to the invention. 38 claims
Patent BG-106931-A (BG)
Title: Ventilated item of clothing
Inventor: MORETTI MARIO P
IPC: A41D3/00
Filed: 2002-07-17
Abstract: An item of clothing, such as a coat, jacket, overcoat or the like, comprising: spacer element (11) which is arranged at least in an internal part of the shoulders (12) of the item of clothing so as to generate an interspace (13) between the shoulders (14) of the user (15) and the fabric which the item of clothing is made of; elements for venting warm air, produced by the user's body (15) that has risen in the interspace. 3 claims, 2 figures
Patent BG-107680-A (BG)
Title: Glass container with improved coating
Inventor: BRANDT THOMAS L
IPC: B65D23/00
Filed: 2003-03-26
Abstract: The invention is directed to a glass container having providedf on at least one surface thereof a polymer based coating and/or a polymer label, said surface being provided with a precoating of at least one polyvinyl alcohol. 25 claims
Patent BG-109883-A (BG)
Title: Preparation for cleaning different surfaces from oil and oil products
Inventor: LAZ NOURSES
IPC: C11D3/06
Filed: 2007-05-29
Abstract: The preparation may be used in the chemical and petroleum-refining industries. It is environmentally friendly, incombustible and non-toxic. It represents a solution relating to the ecological technical means for washing transport facilities and storage of oil and oil products through jet feeding. The technical means used to perform cleaning are mobile and easy to technically maintain. The preparation contains the following components in weight percent: ethoxylated alkyl ôVeronal H 10ö û 1 to 1.5;sodium dodecylbenzol sulfanate 0.2 to 1.2; fused-soda ash 0.5 to 0.8; sodium bicarbonate 1 to 2; sodium polyphosphate 0.3 to 1; urea o.2 to o.3; and water up to 100.
Patent BG-112874-A (BG)
Title: Method and system for control and management of the speed of a kart circuit
Inventor: TSONEV IVAYLO
IPC: G08G1/00
Filed: 2019-01-24
Abstract: The invention relates to a method and system for current positioning, control and management of the speed of karting on a karting circuit, which can find application in the field of organization of entertainment and / or sports services on karting circuits. The system comprises a device for limiting the engine speed, which is designed as a positioning sensor (7) and which is mounted to a rotating part of the go-kart (1), which is connected to an electronic control device (6) fixed to the karting circuit (1) and connected to a local database server (28) via a wireless modem (27).
Patent CN-1290065-A (CN)
Title: 具有集成分布式阻容滤波器的正交调制器
Inventor: DENT P W
IPC: H04B1/40
Filed: 2000-06-05
Abstract: 用于产生复调制信号的正交调制器包括一对独特的平衡低通滤波器,通过用来切换入、切换出电路分布式RC线路部分和相应的地电阻的开关配置,该滤波器可以矫正制作公差带来的问题。
Patent CN-1290625-A (CN)
Title: 小型摩托车的踏板构造
Inventor: SHINKO KONDO
IPC: B62J25/00
Filed: 2000-09-28
Abstract: 一种二人乘坐的小型摩托车10的踏板构造50,在驾驶员放脚的踏板51的后部形成朝侧方张开的凹部52,对着该凹部52内可自由折叠地配置乘客用脚蹬55。这样,可改善驾驶员在路面的放脚性,例如,可防止衣服被弄脏。
Patent CN-1484887-A (CN)
Inventor: PUGH D J
IPC: H04B1/707
Filed: 2001-10-25
Abstract: 一个无线通信系统可以被利用一个或多个可重新配置的芯片实现，所述可重新配置的芯片具有后台和前台配置平面。后台平面能够被利用一个通信算法加载，而通信算法的另一部分被配置到前台平面中并且在可重新配置的结构中操作。在前台和后台配置之间的切换被几乎立即执行。本发明的系统允许诸如用于无线通信系统的基站接收机这样的一个复杂的通信系统被实现在一个效的可重新配置的芯片上而不是一个大得多的FPGA上。
Patent CN-1369982-A (CN)
Title: 码分多址移动通信解调电路和有关的解调方法
Inventor: KOICHI TAMURA
IPC: H04B1/7117
Filed: 2002-01-30
Abstract: 一种用于CDMA移动通信的解调电路,通过从所接收路径中选择无变化、稳定的路径并指派它们来防止接收质量的下降。当根据所接收信号计算延迟分布图,然后根据延迟分布图选择那些具有大功率的路径,并将其指派给手指部分时,路径比较部分检测是否连续地检测到同一个路径,并在连续地检测到同一个路径时计算部分计算当前检测到的路径与先前检测到的路径之间的定时变化,并且如果已经指派给手指部分的各路径内具有最大变化的路径的变化大于/等于变化阈值、当检测到未指派给手指部分且其电平高于/等于预定指派阈值时,则路径定时判断部分将新路径指派给手指部分,以替换具有最大变化的路径。
Patent CN-1450447-A (CN)
Title: 整合语音及数据传输的装置
Inventor: PENG ZHIRONG
IPC: G06F3/16
Filed: 2002-04-09
Abstract: 本发明是关于一种于个人数字助理中，整合语音及数据传输的装置。本装置分别与终端装置及移动通讯基地台成电气式连结，包含一无线局域网络模块、一移动通讯网络模块及一语音网关。其中无线局域网络模块与移动通讯网络模块可传输语音信号及/或资料信号至终端装置及移动通讯基地台。
Patent CN-1441187-A (CN)
Title: 复合软管
Inventor: SUSUMI FUJITA
IPC: F16L11/00
Filed: 2002-02-28
Abstract: 本发明涉及具有如下机能的复合软管：可以使复合软管轻量化、能与运送流体的特性相适应、而且软管内的流体整流化流动、并且在强化层合体的连结力的同时实现均匀化。适用于复合软管的内螺旋卷为三角形截面或半圆形截面、而且形成为中空的筒体，所以，与轻量化和连结力相适应，通过在前述筒体表面覆盖耐腐蚀层，而赋予了对应于流体特性的耐腐蚀机能。
Patent CN-1421436-A (CN)
Title: 2，3，5，6－四氯吡啶的制备方法
Inventor: XUE WEINAN
IPC: C07D213/61
Filed: 2002-12-06
Abstract: 本发明公开了一种制备高纯度2、3、5、6－四氯吡啶的方法，该方法采用五氯吡啶为原料，通过水、低碳醇或低碳醇与水的混合物等极性溶剂为介质，在无机铵盐的存在下，用锌粉或铁粉等作还原剂，制备纯度高达99％的目标产物。
Patent CN-1410243-A (CN)
Title: 接合紧固件和用来生产具有紧固件的树脂模制品的方法
Inventor: HIROSHI ITO
IPC: B29C45/14
Filed: 2002-10-04
Abstract: 本发明的接合紧固件包括多个内模紧固件，每个内模紧固件包括一基体、形成在基体前表面上的多个接合件。内模紧固件彼此通过布置在其后表面上的弹性连接装置连接。使用这样的接合紧固件，很容易在一个操作中将多个紧固件装配到模子的凹进部，提高了工作效率。
Patent CN-1557102-A (CN)
Inventor: JAN EE VAN
IPC: H04N21/236
Filed: 2002-09-19
Abstract: 一种数字记录系统包括数字处理器和存储器。数字处理器从数据流中选择相关数据包，其中所述相关数据包在重复周期中与数据流中的其它数据包交织。数字处理器把所选的相关数据包以文件形式存储在存储器中。同一个或另一个处理器通过检索要在重放数据流中输出的已记录的相关数据包的原始记录数据包，可建立已记录的相关数据包的重放数据流。处理器在适当时间点上检索和替换成重放数据流中随后记录的相关数据包，从而创建重放数据流。
Patent CN-1611006-A (CN)
Inventor: JAIME HASSON
IPC: H03M3/02
Filed: 2002-11-25
Abstract: 本发明涉及一种具有非均匀极化量化的Sigma－Delta N相位键控调制器。按照本发明的一个实施例，量化器产生量化的输出，以便它根据所述积分信号的相位所属的一组N个非均匀单元中的一个来表示从一组N个符号中选择出的一个符号，所述N个非均匀单元以不重叠的方式覆盖复平面。这可以减少较大相位转变的发生，从而可以导致增加效率。非对称的单元边界之选择也可以影响Sigma－DeltaN－PSK调制器的噪声整形频谱。本发明还涉及一种N相位键控调制方法和包括如上所述调制器的移动电话机或发射机。
Patent CN-1736083-A (CN)
Inventor: PAKKALA T
IPC: H04L12/58
Filed: 2002-11-25
Abstract: 应用服务器(113)从客户通信终端(101)接收启动第一客户应用会话的请求以及第一客户特定数据，其中所述数据包含第一移动终端标识符如移动台综合业务数字网号码和散列码。在服务器(113)中建立第一客户会话标识符与第一移动终端标识符的关联。然后在会话管理数据库(115)中存储第一客户会话标识符。激活客户终端(101)与应用会话之间的通信维持操作，包括接收通信请求并验证所述通信请求源于所述第一客户终端(101)。
Patent CN-1487682-A (CN)
Inventor: CHANSOP PARK
IPC: H04J11/00
Filed: 2003-04-04
Abstract: 一种多载波发送系统包括：FEC单元，用于对频域OFDM信号进行编码，以便接收端检错和纠错；映射单元，用于映射所编码的频域OFDM信号；隐藏导频插入单元，用于将功率比映射的频域OFDM信号的平均功率低的隐藏导频信号添加到映射的频域OFDM信号中；IDFT单元，用于通过执行IDFT，将已经添加有隐藏导频信号的频域OFDM信号调制为时域OFDM信号；保护间隔插入单元，用于在时域OFDM信号前面插入保护间隔；同步信息插入单元，用于在已经插入保护间隔的时域OFDM信号前面插入同步信息，以便接收端进行通道均衡和同步捕获；以及整形滤波器，用于限制插入同步信号的时域OFDM信号的频带。由于将具有与OFDM信号相同符号时间的低功率隐藏导频信号添加到频域中，所以可以改善接收性能。