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AT&T Corp Patents
Assignee:
AT&T Corp
Address:
New York, NY
No. of patents:
3698
Patents:


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Patent Number Title Of Patent Date Issued
7151803 Multiuser allocation method for maximizing transmission capacity December 19, 2006
Disclosed is a method and computer-readable medium for bit and power allocation for modems sharing a common multi-carrier binder, including Discrete Multi-Tone (DMT) based Digital Subscriber Line (DSL) modems. In one preferred embodiment, the method includes the steps of initializing a
7151772 Method for performing lawfully-authorized electronic surveillance December 19, 2006
Lawfully-authorized electronic surveillance is performed. A call associated with a first party to be surveilled is verified, on a per-call basis. Packets associated with the call are multicast to a second party and to a surveillance receiver.
7151762 Virtual streams for QoS-driven wireless LANs December 19, 2006
A virtual stream (VS) in a basic service set (BSS) in a wireless local area network (WLAN) that exists solely within the medium access control (MAC) sublayer of the WLAN. The VS includes a unidirectional path in the wireless network between a station sourcing a quality of service (QoS)
7149803 Method for content distribution in a network supporting a security protocol December 12, 2006
The present invention is directed to a method of providing content distribution services while minimizing the processing time required for security protocols such as the Secure Sockets Layer.
7149687 Method of active learning for automatic speech recognition December 12, 2006
State-of-the-art speech recognition systems are trained using transcribed utterances, preparation of which is labor-intensive and time-consuming. The present invention is an iterative method for reducing the transcription effort for training in automatic speech recognition (ASR). Act
7149315 Microphone array for preserving soundfield perceptual cues December 12, 2006
A sound-capturing arrangement uses a set of directional microphones that lie approximately on a sphere having a diameter of 0.9 ms sound travel, which approximates the inter-aural time delay. Advantageously, one directional microphone points upward, one directional microphone points
7148889 System and apparatus for customizing a computer animation wireframe December 12, 2006
An animation wireframe is modified with three-dimensional (3D) range and color data having a corresponding shape surface. The animation wireframe is vertically scaled based on distances between consecutive features within the 3D range and color data and corresponding distances within the
7148879 Bioacoustic control system, method and apparatus December 12, 2006
Bioacoustic sensors and wireless technologies are used for the control of electronic devices, such as a wireless telephones, pagers, music/media players or personal, laptops and personal digital assistant devices (PDA). Such control is implemented with certain systems, methods and ap
7146503 System and method of watermarking signal December 5, 2006
A system and method of generating a watermarked signal are disclosed. The system segments the signal into overlapping blocks using a window function and processes the overlapping blocks according to whether each block is odd- or even-numbered. The system windows the odd-numbered bloc
7146428 Secure in-band signaling method for mobility management crossing firewalls December 5, 2006
An in-band signaling method that enables secure updates of a care-of-IP address for a mobile host that roams between access networks. In the illustrative embodiment described herein, a mobile host includes an intelligent interface that handles IP networking functions and tunnels IP p
7145871 Automatic router configuration based on traffic and service level agreements December 5, 2006
An arrangement where a policy manager automatically generates configuration file updates for the routers in the network, as necessary, sends those updates to the appropriate routers, and causes the routers to install the configuration file updates in real-time. The automatic generati
7145440 Broadband coupler technique for electrical connection to power lines December 5, 2006
Disclosed is a power line broadband communication system having broadband coupler devices capable of direct electrical connection to an energized power line. The coupler includes a conductive portion movable by an adjustable member from a non-conducting retracted position spaced apart
7142563 Service interface for QoS-driven HPNA networks November 28, 2006
An in-band signaling model media control (MC) terminal for an HPNA network includes a frame classification entity (FCE) and a frame scheduling entity (FSE) and provides end-to-end Quality of Service (QoS) by passing the QoS requirements from higher layers to the lower layers of the HPNA
7142505 Method and apparatus for restoring a network November 28, 2006
A method and apparatus for restoring communications in a network. The network includes a plurality of nodes, with each pair of nodes connected by a link, and with each link having information channels and restoration channels. An idle signal is sent on each restoration channel for each
7142356 Fast dynamic gain control in an optical fiber amplifier November 28, 2006
The present invention provides methods and apparatuses for controlling a gain of an optical fiber amplifier. Gain circuitry operates in an opened loop configuration and uses a predetermined function relating a power variation of at least one wavelength region with a pump power adjustment
7139717 System for dialog management November 21, 2006
A spoken dialog system having a dialog management module is disclosed. The dialog management module includes a plurality of dialog motivators for handling various operations during a spoken dialog. The dialog motivators comprise error-handling, disambiguation, assumption, confirmation,
7139715 System and method for providing remote automatic speech recognition and text to speech services November 21, 2006
A system and method of operating an automatic speech recognition application over an Internet Protocol network is disclosed. The ASR application communicates over a packet network such as an Internet Protocol network or a wireless network. A grammar for recognizing received speech fr
7139698 System and method for generating morphemes November 21, 2006
The invention concerns a method of generating morphemes for speech recognition and understanding. The method may include receiving training speech, selecting candidate sub-morphemes from the training speech, selecting salient sub-morphemes from the candidate sub-morphemes based on sa
7139323 Multi-frequency data transmission channel power allocation November 21, 2006
A method of controlling a communication device that is operable to transmit digital data over a plurality of frequency channels. The method includes selecting an initial transmission power and a corresponding data rate for each channel. The method also includes identifying in a first
7136818 System and method of providing conversational visual prosody for talking heads November 14, 2006
A system and method of controlling the movement of a virtual agent while the agent is speaking to a human user during a conversation is disclosed. The method comprises receiving speech data to be spoken by the virtual agent, performing a prosodic analysis of the speech data, selecting
7136816 System and method for predicting prosodic parameters November 14, 2006
A method for generating a prosody model that predicts prosodic parameters is disclosed. Upon receiving text annotated with acoustic features, the method comprises generating first classification and regression trees (CARTs) that predict durations and F0 from text by generating initial
7136361 Hybrid coordination function (HCF) access through tiered contention and overlapped wireless cell November 14, 2006
A method and system reduce interference between overlapping first and second wireless LAN cells in a medium. Each cell includes a respective plurality of member stations and there is at least one overlapped station occupying both cells. An inter-cell contention-free period value is a
7133919 System and method for providing status information from multiple information sources in a single November 7, 2006
The present invention is a system and method for providing and displaying information collected from a variety of information providers such as an electronic mail server or an information content server. Each of the variety of information providers provides information updates which are
7133507 Call progress information in cable telephony November 7, 2006
A method, carried out in an arrangement having a cable that provides programming information to a television monitor as well as telephony service, where call progress information of a telephone call is displayed on the monitor of the television monitor, and the method sends control i
7133498 Method for confirming end point location of calls November 7, 2006
Certain exemplary embodiments comprise a method comprising receiving, from a user-operated telecommunications device, a user-initiated communication to a non-911 communications address. The method can comprise automatically providing a user with a current location of a user-associate
7133381 Interference suppression methods for 802.11 November 7, 2006
An 802.11 source station transmits a signal with the duration field other than that required for the transmission to prevent transmission by other stations during known sequences. Thus, the source station uses the duration field to spoof the actual time the medium will be occupied, to
7133380 System and method for selecting a transmission channel in a wireless communication system that i November 7, 2006
A method for establishing wireless communication between a transmitter and a receiver in a wireless communication system. The receiver includes an adaptive array that has at least two antennas. Each antenna receives a signal and produces a received signal. The transmitter includes at lea
7133355 Interference suppressing OFDM method for wireless communications November 7, 2006
A method for operating an IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises the steps of producing and transmitting an IS-OFDM signal including the use of parallel-to-serial converters in order to maintain the same data rate
7131141 Method and apparatus for securely connecting a plurality of trust-group networks, a protected re October 31, 2006
A security gateway provides a secure connection among one or more networks and a protected resource network. One of the local networks may be connected to the remote private network via a VPN IPsec tunnel. The networks may be local networks that share resources without compromising t
7131007 System and method of retrieving a watermark within a signal October 31, 2006
A system and method of retrieving a watermark in a watermarked signal are disclosed. The watermarked signal comprises odd and even overlapped blocks where the watermark is contained in the even blocks. The method comprises, for each k-th even block, subtracting the two adjacent odd b
7130612 System and method for providing wireless services within a wireless local area network October 31, 2006
The invention provides a system and method for providing a temporary wireless service connection to one or more users within a wireless local area network. In-building services and Internet related services are provided to the users over their respective temporary wireless service co
7130355 Amelioration in inter-carrier interference in OFDM October 31, 2006
In an environment where the transmission medium leading to the receiver is time-variant within a block of received signals, and where transmission medium has an finite impulse response extending over a number of symbols intervals, a receiver that includes a filter that, based on an estim
7130262 Method and apparatus for providing alternative link weights for failed network paths October 31, 2006
A data network wherein network links have an assigned service weight and a restoration weight that are used as factors for respectively determining an optimum primary data path and a back-up data path through the network. The restoration path is used in the event of a failure of the prim
7129932 Keyboard for interacting on small devices October 31, 2006
A QWERTY-based cluster keyboard is disclosed. In the preferred embodiment, the keyboard comprises fourteen alphabet keys arranged such that all the letters in the alphabet are distributed in three rows of keys and in the standard QWERTY positions. Stochastic language models are used to r
7127495 Correlating information between internet and call center environments October 24, 2006
Coordination of information at the network-based level between call centers connectable over a telecommunications network, such as the telephone network, and a packet network, such as the Internet, creates improved integration of and bonding between a customer's interaction with a We
7127395 Method and system for predicting understanding errors in a task classification system October 24, 2006
This invention concerns a method and system for monitoring an automated dialog system for the automatic recognition of language understanding errors based on a user's input communications in a task classification system. The method may include determining whether the user's input com
7127181 System for mitigating the effects of fiber dispersion by separate detection of two transmitted s October 24, 2006
Link robustness, chromatic dispersion and polarization mode dispersion (PMD) immunity can be improved in fiber optical system by using a method for receiving an optical double sideband signal over an optical fiber system, comprising the steps of splitting the received optical double
7127016 Nonuniform oversampled filter banks for audio signal processing October 24, 2006
A non-uniform filter bank is created by joining sections of oversampled uniform filter bands that are based on complex exponential modulation (as opposed to cosine modulation). Each filter bank handles a given, non-overlapping frequency band. The bands are not of uniform bandwidth, a
7127001 Channel estimation for wireless systems with multiple transit antennas October 24, 2006
In various embodiments, techniques are provided to determine channel characteristics of various communication systems such as OFDM systems or systems using a plurality of transmit antennas by using various sets of training symbols.
7126915 Network traffic regulation October 24, 2006
The invention provides a traffic regulation technique for media that functions within access protocols by making a percentage of total communication capacity of the media unavailable to end-users as reserve capacity. This reserve capacity is released when appropriate to regulate netw
7124193 Method of using link adaptation and power control for streaming services in wireless networks October 17, 2006
A method for improving the performance for a streaming service by link-adaptation and power-control in a wireless packet network such as an Enhanced General Packet Radio Services (EGPRS) cellular network is described. In particular, the effects of a combined link adaptation and power
7124083 Method and system for preselection of suitable units for concatenative speech October 17, 2006
A system and method for improving the response time of text-to-speech synthesis utilizes "triphone contexts" (i.e., triplets comprising a central phoneme and its immediate context) as the basic unit, instead of performing phoneme-by-phoneme synthesis. The method comprises a method of
7124078 System and method of coding sound signals using sound enhancement October 17, 2006
A speech coder comprises a first speech enhancement module receiving a digitized speech signal and producing a first enhanced speech signal, a second speech enhancement module receiving the digitized speech signal and producing a second enhanced speech signal, an analysis module that
7123919 Cellular communication system with virtual antennas October 17, 2006
In a cellular communication network, capacity in a cell is increased by placing antennas transmitting different signals on the same carrier frequency at separated signal transmission and virtual site locations in the cell, rather than at the center of the cell. A receiver includes mu
7123837 Optical ring network architecture October 17, 2006
An optical ring network architecture including a number (N) of multi-add/drop filters, such as filters formed using symmetrical pairs of frequency routers. Each multi-add/drop filter is coupled to two other multi-add/drop filters using N-2 transmission media, such as optical fibers,
7123705 Call initiation via calendar October 17, 2006
A system and method for initiating calls via electronic calendar is disclosed. A call list is associated by a user to a particular time and day within the electronic calendar. When the particular day and time arrives, the call list is forwarded to a service which executes the call li
7123138 Home resource controller system October 17, 2006
A system utilizing a transmitter emitting a unique signal and a base station receiver having a database of household members is used to ascertain the identity of household members who are home at any particular time. Such information is used by the local telephone network to provide
7120241 Method and apparatus for controlling a network device October 10, 2006
A personal communications device may be placed in, or removed from, a docking station. In response, a predetermined command may be selected from a plurality of predetermined commands and transmitted from the docking station to at least one of a plurality of network devices. Each pred
7120150 Technique for ethernet access to packet-based services October 10, 2006
An Ethernet Metropolitan Area Network (10) provides connectivity to one or more customer premises (16.sub.1, 16.sub.2, 16.sub.3) to packet-bases services, such as ATM, Frame Relay, or IP while advantageously providing a mechanism for assuring security and regulation of customer traffic.
7120139 Broadband cable telephony network architecture IP ITN network architecture reference model October 10, 2006
The present invention provides a system and method for a reliable, low-cost, secure Internet Protocol (IP) based network that provides broadband-based voice communications as well as video and data communications. The IP network is arranged to function with the infrastructure of the
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