Patents Assigned to Legerity
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Patent number: 6230007Abstract: A method and apparatus are provided for detecting a message waiting condition on a telephone. The method includes providing a control signal to a detect circuit in response to terminating a local use of the telephone, determining a message waiting signal on an external line connected to the telephone in response to the control signal, and activating a visual message waiting indicator in the telephone in response to determining the message waiting signal on the external line.Type: GrantFiled: August 17, 1998Date of Patent: May 8, 2001Assignee: Legerity, Inc.Inventor: John W. Archambeault
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Patent number: 6226356Abstract: A method and apparatus is provided for regulating transmission power of a signal on a line. The method includes determining characteristics of the line, determining the transmission power needed to transmit the signal in response to the characteristics of the line, and transmitting the signal on the line in response to determining the transmission power.Type: GrantFiled: June 12, 1998Date of Patent: May 1, 2001Assignee: Legerity Inc.Inventor: Glen W. Brown
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Patent number: 6222396Abstract: In one embodiment, a multistage output buffer supplies current to a load by successively turning ON output buffer circuits which transition from an OFF state to approximately a saturated state during approximately mutually exclusive periods of time. Thus, the aggregate dI/dt of the contributed by the output buffer drivers is primarily associated with a single output buffer driver. Additionally, the respective output driver transition periods are controlled by delay stage impedance to reduce dI/dt. The consecutive activation of the output buffer drivers may be achieved by using respective delay stages to control activation of associated, respective output buffer drivers. Each delay stage receives a delayed output control signal from a previous delay stage, except for the first delay stage which receives a control input signal from a signal source. Each delay stage also delays activation of its own output control signal with delay circuit elements such as relatively HIGH impedance IGFETs.Type: GrantFiled: August 27, 1999Date of Patent: April 24, 2001Assignee: Legerity, Inc.Inventor: Gregory C. Woodward
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Patent number: 6219377Abstract: A method and modem is provided for communicating data using a plurality of tones. The modem includes an IFFT unit capable of providing a signal comprising a plurality of tones, an interpolator capable of interpolating the signal to produce an interpolated signal, and a tone adder capable of adding a tone having a first preselected frequency and the interpolated signal to produce an output signal.Type: GrantFiled: June 29, 1998Date of Patent: April 17, 2001Assignee: Legerity, Inc.Inventor: Alfredo R. Linz
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Quantization using frequency and mean compensated frequency input data for robust speech recognition
Patent number: 6219642Abstract: A speech recognition system utilizes multiple quantizers to process frequency parameters and mean compensated frequency parameters derived from an input signal. The quantizers may be matrix and vector quantizer pairs, and such quantizer pairs may also function as front ends to a second stage speech classifiers such as hidden Markov models (HMMs) and/or utilizes neural network postprocessing to, for example, improve speech recognition performance. Mean compensating the frequency parameters can remove noise frequency components that remain approximately constant during the duration of the input signal. HMM initial state and state transition probabilities derived from common quantizer types and the same input signal may be consolidated to improve recognition system performance and efficiency. Matrix quantization exploits the “evolution” of the speech short-term spectral envelopes as well as frequency domain information, and vector quantization (VQ) primarily operates on frequency domain information.Type: GrantFiled: October 5, 1998Date of Patent: April 17, 2001Assignee: Legerity, Inc.Inventors: Safdar M. Asghar, Lin Cong -
Patent number: 6218880Abstract: An analog delay line uses an analog-to-digital (A/D) converter which converts an analog signal into a plurality of digital signals. Digital delay lines, each including a series of digital delay elements, delay the respective digital signals. A digital-to-analog (D/A) converter converts the digital signals back into a delayed analog signal.Type: GrantFiled: December 18, 1997Date of Patent: April 17, 2001Assignee: LegerityInventor: Richard Relph
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Patent number: 6208517Abstract: A heat sink includes mounting feet, a plurality of folds, and a clip. Each of the folds has a base portion, and the clip couples at least two of the folds together to inhibit fanning in at least a contact region defined by adjacent base portions. An apparatus includes a printed circuit board, mounting receptacles on the printed circuit board, a heat sink, and a device package. The heat sink includes feet adapted to interface with the mounting receptacles, a plurality of folds, and a base portion defined between the folds. The device package is coupled to the printed circuit board. The base portion of the heat sink contacts at least a portion of the device package.Type: GrantFiled: September 10, 1999Date of Patent: March 27, 2001Assignee: Legerity, Inc.Inventors: Stephen T. Prince, Toby D. Cole, Kevin C. Brundidge, Larry W. Tucker
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Patent number: 6198318Abstract: An apparatus is used to control a reset function of an electronic device. The apparatus includes a circuit adapted to monitor a system voltage level and deliver a control signal in response to the system voltage level falling below a first preselected value. A duration controller receives the control signal and delivers a first reset signal for a preselected duration of time after receiving the control signal. A voltage level controller receives the first reset signal, and delivers a second reset signal that persists until the system voltage rises above a second preselected magnitude.Type: GrantFiled: January 28, 1999Date of Patent: March 6, 2001Assignee: Legerity, Inc.Inventors: Suraj Bhaskaran, Shankar R. Kozhumam, Vijayakumaran V. Nair
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Patent number: 6184813Abstract: A method and apparatus is provided for synchronizing the arrival of data delivered over a first and second path. The method includes generating a first clock signal; delivering the data to the first path in response to receiving the first clock signal; delaying the first clock signal by a preselected time, wherein the first preselected time substantially corresponds to a difference in the time required for the data to propagate the first and second paths; and delivering the data to the second path in response to receiving the delayed clock signal.Type: GrantFiled: November 20, 1998Date of Patent: February 6, 2001Assignee: Legerity, Inc.Inventors: Firas N. Abughazaleh, Vijayakumaran V. Nair
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Patent number: 6178241Abstract: A line card integrates subscriber line interface circuitry, A/D and D/A converters, and digital signal processing technology. The digital signal processing technology performs many line card tasks such as switch hook detection, ground key detection, DC feed control, polarity reversal, ringing tests, fault detection, power cross detection, and ring trip detection. Actual subscriber loop parametric conditions may be determined by a digital signal processor using sensed small signals on both the A and B conductors of subscriber loop. By sensing small signals, saturation of sensing circuitry may be avoided. Furthermore, relatively high speed digital signal processing facilitates accurate and expeditious switch hook status determination.Type: GrantFiled: June 6, 1997Date of Patent: January 23, 2001Assignee: Legerity, Inc.Inventor: Yan Zhou
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Patent number: 6178208Abstract: A demodulation system is provided with input variable gain amplifiers controlled by a digital amplitude processing unit to adjust the level of a received amplitude and phase modulated line signal. An amplitude decoder determines a digital amplitude value corresponding to the amplitude of the received signal. A phase matching circuit compares the received signal with a set of reference phase values to determine the phase of the received signal. The reference phase values are produced by delay cells connected in series in a receive digital delay line. A reference digital delay line supplied by a reference clock signal from a local crystal oscillator is used as a timing reference for the adjustment of the receive delay line. Based on the detected amplitude and phase values of the received signal, a symbol decoder identifies the transmitted digital data.Type: GrantFiled: December 18, 1997Date of Patent: January 23, 2001Assignee: LegerityInventor: Eugen Gershon
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Patent number: 6175316Abstract: A discrete multi-tone communication system employing bin-to-bin differential encoding of data frames to be transmitted within the communication system. The bin-to-bin differential encoding utilizes the phase angle of previously encoded data to encode the current data relative to that phase angle. Hence, only a single reference tone is required to encode a first portion of the data frame into a discrete tone, and then the remaining data portions of the data frame are each subsequently encoded into discrete tones with reference to the phase angle of data already encoded into a discrete tone. Thus, to achieve decoding, a decoding device only requires the reference tone to begin decoding the discrete tones to the correct phase angle for an accurate reproduction of the original data frame.Type: GrantFiled: April 7, 1999Date of Patent: January 16, 2001Assignee: LegerityInventors: Maged F. Barsoum, Hungming Chang, Eugen Gershon, Chien-Meen Hwang, Muoi V. Huynh
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Patent number: 6159174Abstract: In order to prevent conception and/or the spread of sexually transmitted diseases (STD's) one or more lectins capable of binding sperm and/or the pathogenic microorganisms responsible for STD's are administered to the vagina prior to sexual intercourse. The lectins immobilize the sperm to render them incapable of fertilization and also bind to the microorganisms to render them non-pathogenic or to the cells to prevent infection by the microorganisms. Lectins can also be administered to treat sexually transmitted vaginal infections. The invention also encompasses a device for to be placed in the vault of the vagina which comprises a ring which surrounds the cervix and a membrane spanning the central aperture of the ring to prevent the direct contact of ejaculate with the cervical tissues. The device is impregnated or coated with lectins and releases them into the vaginal environment over a period of time.Type: GrantFiled: November 24, 1998Date of Patent: December 12, 2000Assignee: Legere Pharmaceuticals, Ltd.Inventors: Michael J. Oldham, Bruce F. Rose, Howard C. Krivan
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Patent number: 6087571Abstract: A synthetic reed for use in reed-blown wind instruments such as the clarinets, saxophones, oboes and bassoons may be made from an oriented thermoplastic material such as uniaxially or biaxially oriented polypropylene. The reed may be machined from an oriented-polymer blank which in turn has been cut or stamped from an oriented-polymer sheet of the appropriate thickness.Type: GrantFiled: February 12, 1999Date of Patent: July 11, 2000Assignee: Legere Reeds Ltd.Inventor: Guy Legere
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Patent number: 6074671Abstract: In order to prevent conception and/or infection by sexually transmitted diseases (STDs) one or more lectins capable of binding sperm or agglutinable components of male ejaculate and/or the pathogenic microorganisms responsible for STDs or the carbohydrate moieties expressed on cell surfaces by which the microorganisms bind to the cells, are administered to the vagina prior to sexual intercourse. The lectins prevent conception by binding to the sperm or agglutinable components of male ejaculate to render the sperm incapable of fertilization. They also bind to the pathogenic microorganisms to render them non-pathogenic or to carbohydrates expressed on cell surfaces to prevent infection by the microorganisms or treat such infections. Lectins can also be administered to treat sexually transmitted vaginal infections. The lectins can also be applied to or contained within a condom.Type: GrantFiled: June 16, 1998Date of Patent: June 13, 2000Assignee: Legere Pharmaceuticals, Ltd.Inventors: Michael J. Oldham, Bruce F. Rose, Howard C. Krivan
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Patent number: 6066338Abstract: In order to prevent conception and/or the spread of sexually transmitted diseases (STD's) one or more lectins capable of binding sperm and/or the pathogenic microorganisms responsible for STD's are administered to the vagina prior to sexual intercourse. The lectins immobilize the sperm to render them incapable of fertilization and also bind to the microorganisms to render them non-pathogenic or to the cells to prevent infection by the microorganisms. Lectins can also be administered to treat sexually transmitted vaginal infections.The invention also encompasses a device for to be placed in the vault of the vagina which comprises a ring which surrounds the cervix and a membrane spanning the central aperture of the ring to prevent the direct contact of ejaculate with the cervical tissues. The device is impregnated or coated with lectins and releases them into the vaginal environment over a period of time.Type: GrantFiled: June 15, 1998Date of Patent: May 23, 2000Assignee: Legere Pharmaceuticals, Ltd.Inventors: Michael J. Oldham, Bruce F. Rose, Howard C. Krivan
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Patent number: 5840771Abstract: In order to prevent conception and/or the spread of sexually transmitted diseases (STD's) one or more lectins capable of binding sperm and/or the pathogenic microorganisms responsible for STD's are administered to the vagina prior to sexual intercourse. The lectins immobilize the sperm to render them incapable of fertilization and also bind to the microorganisms to render them non-pathogenic or to the cells to prevent infection by the microorganisms. Lectins can also be administered to treat sexually transmitted vaginal infections. The invention also encompasses a device for to be placed in the vault of the vagina which comprises a ring which surrounds the cervix and a membrane spanning the central aperture of the ring to prevent the direct contact of ejaculate with the cervical tissues. The device is impregnated or coated with lectins and releases them into the vaginal environment over a period of time.Type: GrantFiled: September 26, 1997Date of Patent: November 24, 1998Assignee: Legere Pharmaceuticals, Ltd.Inventors: Michael J. Oldham, Bruce F. Rose
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Patent number: 5766632Abstract: In order to prevent conception and/or the spread of sexually transmitted diseases (STD's) one or more lectins capable of binding sperm and/or the pathogenic microorganisms responsible for STD's are administered to the vagina prior to sexual intercourse. The lectins immobilize the sperm to render them incapable of fertilization and also bind to the microorganisms to render them non-pathogenic or to the cells to prevent infection by the microorganisms. Lectins can also be administered to treat sexually transmitted vaginal infections. The invention also encompasses a device for to be placed in the vault of the vagina which comprises a ring which surrounds the cervix and a membrane spanning the central aperture of the ring to prevent the direct contact of ejaculate with the cervical tissues. The device is impregnated or coated with lectins and releases them into the vaginal environment over a period of time.Type: GrantFiled: February 29, 1996Date of Patent: June 16, 1998Assignee: Legere Pharmaceuticals, Ltd.Inventors: Michael J. Oldham, Bruce F. Rose
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Patent number: 4401300Abstract: An air bearing shelf is provided for supporting a newspaper jacket in open position while being transported on a conveyor during addition of an insert into the jacket at printing press speed. The jacket is oriented on the conveyor with the jacket spine aligned with the direction of conveyor movement. The open side of the jacket is split by a sword, and the top portion of the jacket is elevated by sliding on a transition piece until the free side of the top portion enters a pathway bounded on opposite sides by air cushions supplied through apertured upper and lower walls at the margins of the pathway, while the bottom portion of the jacket continues along the plane of the conveyor and is surpressed below an air cushion supplied through the apertured wall over the pathway of the bottom portion.Type: GrantFiled: December 21, 1981Date of Patent: August 30, 1983Assignee: Leger' Equipment Corp.Inventor: George A. Morin
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Patent number: 4177086Abstract: A process for the treatment of a finished or semi-finished forged product de from billets or cast plates of age-hardening aluminium alloys useful in aeronautical applications is provided. The process includes thermally treating the product between the solidus temperature of equilibrium (T.sub.1) and the liquidus temperature (T.sub.2) for a period of 0.5 to 12 hours. The entire surface of the product is coated with an insulating coating and then the product is solution heat treated, and quenched in hot or boiling water.Type: GrantFiled: March 27, 1978Date of Patent: December 4, 1979Assignee: Societe pour le Forgeage et l'Estampage des Alliages Legers FORGEALInventors: Jean-Marie A. Bouvaist, Georges Lacoste