baber/WOPTO huggingface dataset:
Patent CA-2295148-A1 (CA)
Title: Multimedia multiplexing method
Inventor: VILLASENOR JOHN
IPC: H04N19/89
Filed: 1998-05-22
Abstract: A multiplexing method for multimedia communication is provided, which is compatible with the H.223 protocol by changing a header of a multiplex protocol data unit (MUX-PDU). The multiplexing method includes the steps of encoding media data, and multiplexing the media data encoded in the step (a) in units of a predetermined frame, and inserting a second flag (150) having a predetermined length with an auto-correlation in the frame after a first flag (140) having the opening and closing of the frame. Therefore, the probability of detecting the MUX-PDU by a receiver is increased by adding a flag (150) having a high auto-correlation to the H.223 MUX-PDU frame, thereby increasing error-resiliency.
Patent CA-2296883-A1 (CA)
Inventor: HSING JOHN J
IPC: F16B25/00
Filed: 2000-01-24
Abstract: In a fastener having a head and a shank having a generally cylindrical portion with a proximal end adjoining the head and with a distal end, the shank has a primary thread formation and a secondary thread formation. The primary thread formation has a generally uniform radial dimension along the generally cylindrical portion. In one embodiment, the secondary thread formation has a radial dimension tapering outwardly so as to increase continuously from a region where the secondary thread formation originates near the distal end to a region where the secondary thread formation has a maximum radial dimension, which is equal approximately to the generally uniform radial dimension, the latter region being closer to the distal end than to the proximal end. If the secondary thread formation is interrupted, tapping torque is lower, as compared to tapping torque if the secondary thread formation is continuous. In another embodiment, the secondary thread formation has a radial dimension tapering outwardly so as to increase continuously from a region where the secondary thread formation originates near the distal end to a region where the secondary thread formation has a maximum radial dimension, which is less than the generally uniform radial dimension, the latter region being at the proximal end.
Patent CA-2297803-A1 (CA)
Inventor: GUIMON MICHELE
IPC: C23F11/00
Filed: 1998-07-23
Abstract: The invention concerns novel N-alkyl-hydroxybenzylamines of formula (I) in which: R¿1? and R¿2?, which are identical or different, represent a hydrogen atom or a monohydroxylated or polyhydroxylated C¿1?-C¿8? alkyl radical, provided that R¿1? and R¿2? do not simultaneously represent each a hydrogen atom; Q represent a -OH or -NH¿2? radical; Z represents a hydrogen atom or the group (a) in which R¿1? and R¿2? have the same definitions as above and Y¿1? and Y¿2? represent a hydrogen atom or the radical -OH, provided that Y¿1? and Y¿2? do not simultaneously represent each a hydrogen atom. The invention is useful for treating metal surfaces both against corrosion and for improving subsequent paint adherence.
Patent CA-2298111-A1 (CA)
Title: Spade drill
Inventor: COLE JOHN M
IPC: B23B51/00
Filed: 2000-02-09
Abstract: A spade drill is provided including a V-shaped drill cutting end and a pair of reaming edges on each side thereof. The reaming edges have a relatively large radius of curvature and generally define a flat portion at the apex of the reaming edges. The junction between the drill cutting end and the reaming edges has a misblended radius.
Patent CA-2298272-A1 (CA)
Title: Lightwave communication systems using semiconductor optical amplifiers
Inventor: CHRAPLYVY ANDREW ROMAN
IPC: H04B10/29
Filed: 2000-02-08
Abstract: Substantially error-free communications is achieved in an optical communication system that includes optical amplifiers by detecting bits transmitted in the amplified optical signal using a detection threshold that is derived as a function of a maximum power level associated with a first bit value, e.g., bit "0", and a minimum power level associated with a second bit value, e.g., bit "1". Importantly, this detection scheme can be used to accurately detect bit patterns in the amplified signal even in the presence of nonlinear distortions caused by gain variations, such as inter-modal distortion and saturation induced crosstalk. In a wavelength division multiplexed (WDM) system comprising semiconductor optical amplifiers, for example, the detection threshold can be set at a level corresponding to P TOTAL/2N, where P TOTAL represents the total power in the WDM signal and N represents the number of optical channels in the WDM signal.  According to another aspect of the invention, the effect of gain fluctuations becomes smaller as the number of channels increase. In particular, a smoothing effect is realized for the total effective saturation power as gain variations decrease as a function of an increase in the number of channels. As such, the performance of a semiconductor optical amplifier according to the principles of the invention approaches the linear performance of fiber amplifiers as the number of channels increases.
Patent CA-2300081-A1 (CA)
Title: Thermoplastic resin composition having impact resistance
Inventor: TAKAKI AKIRA
IPC: C08L51/04
Filed: 1998-07-10
Abstract: A thermoplastic resin composition comprising a thermoplastic resin (A) and graft copolymer particles (B). The thermoplastic resin composition contains the graft copolymer particles (B) in an amount of 1 to 11 parts by weight based on 100 parts by weight of the thermoplastic rein (A). The graft copolymer particle (B) comprises a hollow rubber portion and a graft chain and a volumetric proportion of hollow part in the hollow rubber portion is 1 to 70 % by volume on the basis of the hollow rubber portion. The hollow part in the graft copolymer particle functions to further improve impact resistance.
Patent CA-2302548-A1 (CA)
Inventor: YAN DAVID EVGEN EVICH
IPC: G08B5/36
Filed: 1999-03-16
Abstract: Cette invention concerne un dispositif informatique qui est aligné sur un émetteur-récepteur radio, et dans la mémoire duquel on introduit des données qui consistent en un massif d'informations formatées auquel on attribue un code personnel après conversion. Ce code est transmis sous forme de signaux radio par impulsions par un système de diffusion afin d'être reçu par d'autres dispositifs fonctionnant dans la zone d'action du premier dispositif. Lors de la réception des signaux radio, on compare les codes reçus avec le code personnel et, lorsqu'ils coïncident, on décode et on extrait les données obtenues correspondant à ce code. Lors de l'établissement de corrélations, on envoie selon le code qui a permis d'établir la coïncidence un signal radio par impulsions qui fait état de cette coïncidence, et l'on reçoit un signal radio par impulsions de réponse concernant le code personnel en vue de leur identification réciproque. Après avoir reçu les signaux radio par impulsions concernant le code personnel et confirmant l'établissement d'un contact direct, les dispositifs des abonnés passent en mode de communication directe de manière que les abonnés puissent communiquer entre eux. Lorsque les codes reçus ne coïncident pas avec le code personnel, ces codes sont introduits dans la mémoire et sont émis dans le système de diffusion pendant la période exempte de signal radio par impulsions comprenant un code correspondant au code personnel.
Patent CA-2303071-A1 (CA)
Inventor: MCKIEL FRANK A JR
IPC: H04Q11/00
Filed: 1998-09-11
Abstract: A system, method and apparatus are described that allow for the updating and transmittal of a low data rate signal providing ancillary network data as a rider on a high data rate optical signal. This subcarrier modulated signal can be processed and updated by using a drop/insert facility (407) without having to alter the high data rate signal component of the data signal. Since the subcarrier signal can be detected by inexpensive equipment without having to detect and demultiplex the high data rate signal, the approach described offers a cost effective solution to the problem of network monitoring.  Ancillary network management information can be communicated regardless of the quality or loss of the high data rate signal. In addition, by updating the subcarrier signal rider in a cumulative manner, a complete history of the fiber link the modulated optical signal travels on is provided to network management.
Patent CA-2303977-A1 (CA)
Title: Expression d'enzymes impliquees dans une modification de la cellulose
Inventor: SCHAAF DAVID J
IPC: C12N15/53
Filed: 1999-07-23
Abstract: L'invention concerne de nouvelles compositions et de nouveaux procédés utiles pour la mise au point génétique de cellules végétales qui permettent d'exprimer des enzymes de dégradation de la cellulose dans des végétaux ou dans des cellules végétales.
Patent CA-2304118-A1 (CA)
Title: Protocol independent sub-rate device
Inventor: KNAPTON CHRIS
IPC: H04L69/14
Filed: 2000-04-05
Abstract: A protocol independent multiplexer is described that allows for multiple different protocols that operate at different bit rates to be combined and output in a format that may have yet another bit rate. The multiplexer includes a series of inputting devices that are each coupled to a respective buffering device, a mapping device coupled to each of the buffering devices, and an outputting device coupled to the mapping device. Each of the inputting devices receive an input optical signal and forwards recovered data information to the corresponding buffering device. The buffering devices store the data information and output to the mapping device, the outputting being controlled by the mapping device to ensure that the buffering devices remain approximately half full. The mapping device formats the data information into individual data units and outputs the data units to the outputting device which subsequently multiplexes the data units. One key advantage of this protocol independent multiplexer is that only one piece of hardware is required for the operation of numerous different protocols.
Patent CA-2306506-A1 (CA)
Title: Universal communications and control system for amplified musical instrument
Inventor: FLAKS JASON S
IPC: G10K15/00
Filed: 2000-04-25
Abstract: An audio communications and control system includes a plurality of audio devices each of which includes a device interface module for communication of digital audio data and control data from at least one of the devices to at least one other of the devices. A universal data link is operatively connected to each of the device interface modules. The device interface modules and universal data links are operative in combination to connect the devices together in the system and provide full duplex communication of the digital audio data and control data between the devices.
Patent CA-2307843-A1 (CA)
Inventor: VIHINEN SEPPO
IPC: G07C/
Filed: 1998-10-29
Abstract: System and procedure for implementing a service in a telecommunication system comprising a first terminal device (1), a control centre (2) comprising means for handling short messages and/or data calls, an automatic apparatus (3) comprising a second terminal device (4) and a control unit (5) connected to it, a telecommunication network (6) comprising an intelligent network (7), said intelligent network containing means (8) for determining charge and location data and producing voice messages, a first telecommunication connection (9) and a second telecommunication connection (10). In the system, the first terminal device (1) and the second terminal device (4) as well as the control centre (2) are connected to the telecommunication network (6). In the procedure, a product is ordered by making a call from the first terminal device (1) to a number shown on the automatic apparatus (3). The control unit (5) controls the automatic apparatus (3) and the second terminal device (4) disposed in the automatic apparatus (3) in such a way that the customer will get the product ordered. If the automatic apparatus has run out of the product or is having a malfunction, then the customer is informed about it by sending a voice message.
Patent CA-2308314-A1 (CA)
Title: Method for high resolution liquid chromatographic separation of polynucleotides
Inventor: TAYLOR PAUL D
IPC: G01N30/34
Filed: 1998-10-30
Abstract: Mixtures of dsDNA fragments are separated by Matched Ion Polynucleotide Chromatography (MIPC) using an isocratic mobile phase to elute polynucleic acid from an MIPC column. The use of isocratic elution conditions provides a marked improvement in the separation of dsDNA fragments compared to gradient elution conditions. Isocratic elution can also be used to effect an improved separation of heteroduplex and homoduplex mixtures when the chromatography is performed under partially denaturing conditions. In addition, dsDNA fragments are bound to the stationary phase under isocratic conditions until a solvent concentration is reached which releases fragments of a particular base pair length range. This separation process is different from the equilibrium partitioning process observed under gradient elution conditions.
Patent CA-2308990-A1 (CA)
Title: Multiple-slide die-casting system
Inventor: LAVEAU RICHARD
IPC: B22D17/32
Filed: 2000-05-16
Abstract: A multiple-slide die-casting machine is equipped with improved mechanical structure and unique injection control system to improve the quality of molded products, to achieve flash free castings of improved surface finish. The clamping assemblies are mounted on one side of a base plate of the machine for applying clamping force to the mold sections in a preloaded state. A reinforcement ring interconnects the clamping assemblies to inhibit deflection of the base plate and the brackets which support the clamping assemblies so that an accurate parting line between the contacting surfaces of mold sections is insured. The unique injection control system of the machine provides selectively closed loop and open loop injection to achieve the advantage of a closed loop control injection which provides for optimal parameters for an injection cycle to eliminate hammer effect, and the advantage of open loop which is suitable for die-casting small products requiring an injection stroke too short to be reacted on in closed loop control.
Patent CA-2309181-A1 (CA)
Inventor: ANDRE JACQUES
IPC: A61B34/00
Filed: 1998-11-16
Abstract: The invention concerns a device for positioning a surgical instrument, characterised in that it comprises a fixed support (1) combined with at least: a first mobile element (4) articulated on the fixed support (1) about a first axis (H1) substantially parallel to the plane wherein the patient is placed (PP') and capable of carrying out a first movement; a second mobile element (5) articulated at the end of the first element (4) about a second axis (H2) substantially parallel to the plane wherein the patient is placed (PP') and capable of carrying out a second movement; a deformable element (6) fixed on one side to the end of the second mobile element (5) and capable of carrying out a third rotating movement about a third axis (C); a prehensile member (7) fixed on the side opposite to that of the second element to the deformable element;  a device (8) for locking a surgical instrument (9) on the prehensile member (7); and actuating means (10 and 11) for producing the rotating movements about the different axes (H1, H2, and C).
Patent CA-2310953-A1 (CA)
Inventor: DARBEE PAUL V
IPC: G08C19/28
Filed: 1990-09-24
Abstract: The universal remote control system includes a remote control comprising input elements for inputting commands into the remote control, infrared signal output circuitry including output elements for supplying an infrared signal to a controlled device, central processing unit (CPU) coupled to the input elements and to the signal output circuitry, a memory coupled to the CPU and data coupling circuitry including terminal structure coupled to the CPU for enabling code data for controlling a variety of devices to be controlled to be supplied from outside the remote control through the terminal structure and the CPU to the memory to set up the remote control for controlling the devices to be controlled and a data transmission system including coupling circuitry for coupling the terminal structure to a computer, directly, through a telephone line, through a modem and a telephone line, or through a decoding element, a television set and a television signal which is picked up by the television set and which has data from the computer.
Patent CA-2311436-A1 (CA)
Title: Faraday rotation angle varying device
Inventor: KAWAI HIROTAKA
IPC: H01F10/24
Filed: 2000-06-13
Abstract: There is provided a Faraday rotation angle varying device in which external magnetic fields are applied from at lease two directions to a garnet single crystal having a Faraday effect and vary a synthesized magnetic field so that Faraday rotation angle of light which transmits through the garnet single crystal is controlled. The device has a base film of garnet single crystal having a rotation angle varied in accordance with variation of a synthesized magnetic field, anda compensating film of a garnet single crystal having a constant Faraday rotation angle. The base film has a wavelength coefficient sign and the compensating film has a wavelength coefficient sign which is different from that of the base film, so that a wavelength variation component of the Faraday rotation angle of the base film is reduced by the compensating film. For example, a fixed magnetic field parallel to a light direction is applied by permanent magnets 40, 42 and a variable magnetic field is applied by an electromagnet.
Patent CA-2313853-A1 (CA)
Title: Reflective laser collimator
Inventor: COLE IRA E III
IPC: B23K26/06
Filed: 2000-07-11
Abstract: A reflective collimator for a laser, such as for use in a cutting or welding machine tool. The collimator requires no more than three minors, and can be configured with only two. The relative positions of a convex/concave mirror pair are adjusted to adjust the divergence of the output collimated beam. Adjustment is accomplished by translating two of the mirrors in linear paths along respective beam paths established in the collimator. A linkage interconnects the two translatable mirrors and includes a coupling which incorporates the triangular geometry of the beam path established by the mirrors, so that the translatable mirrors are linked to maintain alignment throughout the range of collimator adjustment. When one of the translatable mirrors is adjusted the linkage causes the second to track the first while maintaining precise alignment in the collimator.
Patent CA-2314704-A1 (CA)
Title: Compression regenerative machine for fuel cell
Inventor: BAN TAKASHI
IPC: H01M8/04
Filed: 2000-07-28
Abstract: A compression regenerative machine for a fuel cell according to the present invention comprises a displacement type compression mechanism portion C connected to an oxygen-containing gas supply side of a fuel cell F, and a displacement type regenerative mechanism portion E connected to an exhaust discharge side of the fuel cell F. A confined compression chamber 14 defined by the compression mechanism portion C and a confined regenerative chamber 24 defined by the regenerative mechanism portion E have a capacity ratio of 1.25 to 3.
Patent CA-2315842-A1 (CA)
Title: Apparatus for reducing tissue volumes by the use of energy
Inventor: EDWARDS STUART D
IPC: A61B18/20
Filed: 1998-12-08
Abstract: A cell necrosis is used to reduce a volume of a selected site of an anatomical structure. An energy delivery device is coupled to a distal portion of a handpiece. The energy delivery device has a tissue piercing distal end. A pressure plate is positioned at an exterior of the energy delivery device to prevent excessive penetration of the energy delivery device into the tissue.
Patent CA-2321674-A1 (CA)
Title: Multi-dimensional electronic identification of articles
Inventor: MARSH MICHAEL JOHN CAMILLE
IPC: G06K7/10
Filed: 1999-03-03
Abstract: An identification system is provided for identifying a plurality of randomly aligned object-based transponders (18, 20, 22) passing through a predetermined reading volume. A reader (10) includes multiple transmitting and receiving antenna arrays (12, 14, 16) which are arranged sequentially to transmit interrogating and energising fields (29) into the reading volume, with each energising field having a different polarisation. Each transponder (12, 14, 16) is arranged to be powered by at least one of the interrogating and energising fields, and includes a short term memory module (30) which is arranged to record the successful transmission or otherwise of the identification signal of the transponder (20) and to retain the record in the absence of a power supply to the transponder. The short term memory module has a retention time longer than any predicted interruption of power supply to the transponder via one of the energising fields within the reading volume. The minimum memory retention time is typically the time period taken for the sequential transmission of all but one of the interrogating and energising fields (29) during an interrogation cycle.
Patent CA-2323716-A1 (CA)
Title: Automatic device for producing samples for use in chemical or biological reactions in liquid medium
Inventor: VICTOR JEAN-MARC
IPC: G01N35/00
Filed: 1999-03-19
Abstract: An automatic device for dispensing samples in liquid medium for use in chemical or biological reactions, including a first supply plate with N receptacles, a second supply plate with M receptacles, a removable plate for sample and a piezoelectric micropipette.
Patent CA-2323766-A1 (CA)
Title: Providing secure access to network services
Inventor: SULLIVAN JAMES M
IPC: H04L29/06
Filed: 1999-03-03
Abstract: A computer network includes one or more service computers configured to provide multiple network services via the network, and one or more connection devices that allow multiple network client computers to access the services via the network. The network also includes a single routing computer that serves as a firewall through which all traffic between the network services and the network client computers must pass.
Patent CA-2329141-A1 (CA)
Title: A vector for gene trap, and a method for gene trapping by using the vector
Inventor: ASZTALOS ZOLTAN
IPC: C12Q1/68
Filed: 1999-05-21
Abstract: The present application provides a vector for trapping an unknown gene of Drosophila melanogaster, which is a recombinant plasmid comprising the following nucleotide sequences in this order: an artificial consensus splicing acceptor site; a synthetic "stop/start" sequence; a reporter gene; a drug resistance gene; a gene responsible for a detectable phenotype of the Drosophila melanogaster; and a synthetic splicing donor site. The present application also provides a method for trapping an unknown gene of Drosophila melanogaster by using the vector.
Patent CA-2330353-A1 (CA)
Inventor: DE GUGLIELMO PASCAL
IPC: B65B21/24
Filed: 2000-12-29
Abstract: The packaging conveyor for bottles has a conveyor belt (2) with multiple pushers (6) spaced regularly along it on a movable support (7). The pushers move in a closed path which extends in a plane (P) perpendicular to the conveying surface (S) and locally contiguous to it. Each pusher is movable between inactive and active positions. In the latter, the pusher extends from the conveying surface to engage an article to be pushed (3). The number of pushers active at any time can be varied. The conveyor belt speed changes can be pre-programmed.