Class 379/22.08 - Noise

Subclass of Class 379 - Telephonic communications
Definition: Subject matter wherein the evaluated parameter is representative
No. of patents: 31
Last issue date: 09/13/2011

Number	Title	Issue Date
8019050	Method and apparatus for providing feedback of vocal quality to a user Embodiments of the invention relate to a feedback mechanism that informs a user of a communication device to adjust the volume, pitch, tone or other characteristic of his voice so as to compensate for noise in the surrounding environment. The feedback mechanism incl...	09/13/2011
7257220	Method and system for providing extended reach of a digital subscriber line signal A method for providing extended reach of a digital subscriber line signal includes receiving an incoming DSL signal, splitting the DSL signal into separate voice and data signals, demodulating the data signal, requantizing the demodulated data signal, modulating the...	08/14/2007
7254217	Fault characterization using information indicative of echo A fault associated with a communication medium is analyzed by correlating a first set of information indicative of echo associated with the communication medium with a second set of information indicative of echo. The fault is characterized based on the correlation ...	08/07/2007
7242761	System and method for determining the transmit power of a communication device operating on digital subscriber lines A system for determining the transmit power of a communication device operating on a twisted pair subscriber line includes a communication server coupled to a first subscriber line and a second subscriber line. The communication server comprises a communication devi...	07/10/2007
7180300	System and method of locating ground fault in electrical power distribution system A method for locating a ground fault in an electrical power distribution system includes providing a plurality of current sensors at a plurality of locations in the electrical power distribution system. The method further includes detecting a ground fault in the ele...	02/20/2007
7092362	Terminal extension repeater An extension repeater which interfaces between a digital service network and a local network span combines extensive diagnostic and operational functions in a single, space-efficient device. The functions include simultaneous loopback capability in both the directio...	08/15/2006
7013257	Communication transmission impairment emulator A communication system emulator digitally emulates a plurality of signal impairments created by the transmitter and receiver components and communication medium in a typical communication system, for use in evaluating and refining modem design. A variety of linear a...	03/14/2006
6915250	Customer premises simulation for a service provider A simulation system that simulates a customer premises is disclosed that is tunable. The simulation system is comprised of a communication media simulator system and a device simulator system. The communication media simulator system receives a service provider sign...	07/05/2005
6901358	Communication media simulation for a service provider A simulation system that simulates a length of communication media is disclosed that is tunable. Examples of communication media include wire, coaxial cable, and fiber. The simulation system is comprised of a communication media simulator system. The communication m...	05/31/2005
6765989	Method for optimizing downstream data transfer in an asymmetric digital subscriber line modem A method for optimizing downstream data transfer in a telephone from a splitterless asymmetric digital subscriber line modem. The modem examines the power spectrum of fast retrain signals both when the telephone is on-hook and off-hook. By comparing the power in the...	07/20/2004
6721394	Method for reducing noise from an asymmetric digital subscriber line modem A method for reducing audible noise in a telephone from a splitterless asymmetric digital subscriber line modem. The modem examines the shape of the power spectrum of fast retrain signals both when the telephone is on-hook and off-hook. By comparing the spectra, in ...	04/13/2004
6690769	Hand-held telecommunication loop testing device A signal acquisition device captures signals from a telecommunication line such as a local loop. The captured signals are spectrally analyzed using a signal-processing unit. The output of the signal-processing unit--in the form of a test spectrum--is prov...	02/10/2004
6542581	Method for controlling the transmission power in a digital subscriber line The method is for controlling the transmission power for a session in a system when transmitting data via a telephone line by using a digital subscriber line between a user terminal and a central unit. The transmission power is increased or decreased betw...	04/01/2003
6341159	Extrapolation of location and amplitude of noise sources on telecommunication wireline from ended access point A wide band noise extrapolation test system, which may reside within a processor-controlled test head installed in a central office, or as part of test signal generation and processing circuitry of a craftsperson's test set, processes data derived from ap...	01/22/2002
6298119	System and method for digital telephone trouble reporting A system and method for telephone trouble reporting. One aspect of the present invention is a context-sensitive graphical user interface (GUI). The GUI allows a user to select a trouble reporting option at various stages of a telephone call in a telephony...	10/02/2001
6185280	Line impedance matching using dynamically generated transfer functions A system and method for determining the impedance of a telephone transmission line are disclosed. A test signal is transmitted through a telephone switch to the telephone line and corresponding echo signals are monitored. The test and echo signals are cor...	02/06/2001
6061427	Transmission power control method in asymmetric digital subscriber line system A transmission power control method in an Asymmetric Digital Subscriber Line (ADSL) system for transmitting data through a telephone line interposed between an ADSL-TUC (Transmission Unit Center) and an ADSL-TUR (Transmission Unit Remote). The ADSL system...	05/09/2000
6061428	Customer bridge with indicators for diagnosing electrical connection problems The present invention teaches a bridging device for telephone communications which may be connected at customer premise locations in order to provide diagnostic information with respect to the line conditions of network side and customer side wiring. Visu...	05/09/2000
6055297	Reducing crosstalk between communications systems Modems using a telephone line for high speed communications between them are arranged to monitor crosstalk from other existing communications systems with which they may mutually interfere, and adjust the power spectral densities (PSDs) of their transmitt...	04/25/2000
5974363	Self-testing of smart line cards Automatic testing a group of line circuits on a smart line card served by a central switch over a PCM bus is localized by using the microprocessor/DSP that provides codec functions for the group of line circuits. Tests such as DC overhead that are not per...	10/26/1999
5875229	System and device for, and method of, detecting, characterizing, and mitigating deterministic distortion in a communications network A system and device for, and method of, detecting, characterizing, and mitigating deterministic distortion in a communication system. An exemplary communication system includes a digital adaptor for sending octets on to a backbone of a PSTN, which then se...	02/23/1999
5444776	Bridge for a network interface unit A network interface unit interconnected between a network span and a customer premises. The network span includes network transmit lines and network receive lines. The network interface unit includes a passive resistance circuit in the receive direction p...	08/22/1995
5437023	Noise-tolerant address transmission system for digital telecommunication network An improved address acknowledgement system for line elements such as repeaters in a digital telecommunication network. The system is preferably controlled by logic circuitry, in conjunction with a microprocessor. A remote facility such as a test unit tran...	07/25/1995
4768203	Signal-to-noise ratio testing in adaptive differential pulse code modulation The adaptive and predictive capabilities of Adaptive Differential Pulse Code Modulation (ADPCM) equipment enable a telecommunication system to maintain acceptable signal/noise levels in voice transmission while utilizing a significantly lower encoding bit...	08/30/1988
4611101	Method and apparatus for testing communication systems A microcomputer controlled apparatus and method for testing communication lines including circuits serving multiple functions in the measurements of line electrical and noise characteristics. A current divider, an analog to digital converter, a constant c...	09/09/1986
4568802	VF Line fault isolation and diagnostic apparatus and method An addressed transmission line test system having bidirectional input and output lines with through connections in a quiescent state which is capable of recognizing properly addressed signals at either direction input for breaking the through connections ...	02/04/1986
4552996	Method and apparatus for evaluating noise level on a telephone channel The level of the signal present on the telephone channel is evaluated at successive time intervals. Those evaluated signal levels which lie within a given range of noise levels are selected and they are expressed in terms of r discrete values in said rang...	11/12/1985
4440985	Apparatus for determining the location of faults in a transmission line A toroidal, saturable core reactor (14) is connected in series with the conductors (11,19 and 13,21) of a transmission line. A termination network (16) is connected across the transmission line conductors (19,21). In response to an a.c. test signal transm...	04/03/1984
4273970	Intermodulation distortion test Errors in test results are minimized in a test system (FIG. 1) employing digital data acquisition units (121) when measuring intermodulation distortion of a voice frequency communication facility (105) by employing a unique 3-tone test signal. To this end...	06/16/1981
4229626	Loop fault sectionalization A fault on a nonloaded telephone subscriber loop is sectionalized by a frequency domain distance detection system. The derivative with respect to frequency of the phase angle of the complex input impedance of a cable pair is continuously monitored over a ...	10/21/1980
4021625	Instruments and methods for measuring characteristics of only a selected portion of a transmission channel There are disclosed instruments and methods for measuring the characteristics of only a selected portion of an overall transmission channel. A test tone is transmitted from a test site to a remote facility over a path to be tested, and the received signal...	05/03/1977

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Class 379/22.08 - Noise