International Business Machines Corporation

J2 Global Communications, Inc.

General Electric Company

Voxiva, Inc.

Jfax Communications, Inc.

Anand Narasimhan

Yaacov Shemesh

Amit Kumar

Sandeep Chennakeshu

John B Anderson

David Frederick Bantz

Ganesh Nachiappa Ramaswamy

Frederic J Bauchot

Kadathur S Natarajan

Leon Lumelsky

Trieu Can Chieu

Chia-Chi Huang

Li-Cheng Richard Zai

Gary E O'Neil

Peter Dirk Hortensius

Leo A D'Angelo

Michele M Wetterwald

Pamela R Johnson

Paul Meyer

Jason Thaxter

Jude M Flannery

Leo D'angelo

Gary E O'neil

Trieu Chan Chieu

A method and apparatus is disclosed for delivering messages that utilizes a message queue and a router/filter within a private data network. The private network is connected to an external data network such as the Internet, and has separate outbound resource servers to provide a high degree of scalability for handling a variety of message types.

Scalable architecture for transmission of messages over a network

Systems and processes for communication of messages between one or more networked objects on circuit and packet data networks are described. Specifically, means for representation of various communication types, including content description and disposition rules, delivery and routing descriptions and rules, conversion and translation descriptions and rules, and methods for interactions and for administration over one or more network types, through one or more communication protocol types, to one or more destination types are described. The delivery of messages and other communication over various communication protocols in addition to email is described. Methods for administering and managing rules for directing and transforming said messages and communications for purposes of routing or delivery to one or more specific destinations are also presented.

Method and process for signaling, communication and administration of networked objects

A method of enhancing the audio quality in a reproduction medium having unknown characteristics. With this method a predetermined finite set of single frequency tones are generated and these tones are then passed through the reproduction medium to generate an output signal, which in turn is passed through a set of sub-band filters. Each of the sub-band filters pass at least a frequency corresponding to one of the tones in the set of tones. The characteristics of the reproduction medium is then estimated as a result of passing the output signal through the set of sub-band filters. Based on the estimated characteristics of the reproduction medium, a set of sub-band inverse filters are constructed. Finally before passing the audio signal through the reproduction medium the signal is passed through the set of inverse filters to improve the quality of the audio signal after it passes through the reproduction medium.

Acoustic quality enhancement via feedback and equalization for mobile multimedia systems

The present invention is directed to a system, components of the system, a method and components of the method for collecting, disseminating and managing information between a data/voice base network and an end user or system. The present invention comprising: (1) an end user device; (2) a device adapter; (3) management surface interface; (4) a series of programmable tools capable of carrying out a desired function; and (5) an information source. The present invention being adaptable to collect, disseminate and manage information relating to public health, financing, banking, E-government, commercial sales, commercial distribution, and others.

System and method for collecting, disseminating and managing information using a voice and data base system

A system for supporting a message delivery service, a method for supporting such a service and a machine accessible medium containing program data for implementing such a system. A number of processing servers are coupled to communicate with a number of outbound resources and a database server over an internal packet-switched data network. The database server contains account information on customers of the service. Request messages received from a customer over an external packet-switched data network are stored in a queue of a processing server. A router filter obtains a request message from the queue and validates a customer associated with the request message, after accessing the database server. A determination is made as to which of the multiple outbound resources to assign the request message. Each of these resources is capable of converting an input request message into a format capable of being received by a fax machine over a telephone network.

A gateway enables point to multipoint connectivity from voice, data, or SVD clients over voice and data networks. The gateway connects one or more known voice networks (e.g. telephone networks) and one or more data networks (e.g. LANs, WANs, and internet) so that clients on either network may access any of the networks via various devices like analog telephones, data modems, SVD modems, or direct data network connections (e.g., ethernet, token ring). The gateway has connections to both the data network(s) as well as the voice network(s). The gateway is capable of splitting a signal with both voice and data streams and routing either and/or both of these streams over the voice network alone, the data network, or both. A process, executing on the gateway enables the gateway to establish connections on gateway paths and to control and direct a flow of voice and data information between the destinations on these networks.

Multipoint simultaneous voice and data services using a media splitter gateway architecture

A message processing and forwarding system for processing electronic messages in a digital format received over a computer communication path or network, and forwarded over a telephone circuit switched network to a user's receiver, such as a pager. A content processor in a message server processes the received digital message in accordance with knowledge of the receiver's capabilities and user-configured message filtering information to create a customized second message suitable for handling by the user's receiver at a remote physical location. Also, the system defines a distributed architecture for global paging, including multiple redundancy, to yield a robust system. In a preferred embodiment, the original digital message is part of an e-mail message received and forwarded through a conventional computer communication network such as the Internet.

Filtering computer network messages directed to a user's e-mail box

This invention discloses a method and apparatus for acquiring and maintaining a cellular wireless communications subnetwork on an Ad Hoc basis, where mobile units within a cellular network communicate with each other using only a single communications channel of the entire cellular wireless communications network.

Ad Hoc packet data networks using cellular telephone networks

The present invention is a system and method for resolving closely spaced frequencies in frequency patterns used to tag objects. The system comprises a base station transceiver and one or more objects that send the base station a unique frequency pattern that identifies the respective object and/or provides information about the object. The base station performs a method by which an estimate of a received signal from an object is compared to one or more known frequency patterns in a frequency pattern set stored at the base station. One test frequency pattern at a time is selected and a distance is determined between the estimated received frequency pattern and the selected test frequency pattern. Iterative modifications are done to the test frequency pattern to minimize the distance. If the distance can be reduced to within a selected threshold, a known frequency pattern stored in the frequency pattern set at the base station and closest to the modified test frequency pattern is chosen as the frequency pattern transmitted by the object. The invention includes a method for determining and removing indeterministic noise.

Receiver apparatus and method for frequency tagging

Direct communication between a primary portable unit initiating the communication and a secondary portable unit is established utilizing two handshaking operations. The first handshaking operation is performed in the base station channel to establish initial contact between the primary and secondary portable units. After initial contact is made, the second handshaking operation is performed to establish communication in an unoccupied channel. The base station channel and the unoccupied channel may be a TDMA/TDD channel or a TDMA/FDD channel.

Method and apparatus for direct communication in a TDMA radio

Methods for handoff in a wireless communication network including a local area network connected to a plurality of base stations, each of which has a geographic area, defined as a cell, within which mobile stations can communicate with a base station, with each such base station being capable of performing bidirectional wireless communication with one or more of said mobile stations under control of a controller, with communication between base stations and mobile stations being performed by frequency hopping, with there being n available frequency hopping channels in a fixed frequency band, with each channel being of a same fixed duration and having a fixed frequency different than another channel. The handoff method employs structure and techniques for determining by a mobile station that the quality of transmission between itself and a current base station has degraded below a predetermined performance level, structure and technique for the mobile station to listen to each of successive frequency channels for a duration substantially less than the fixed duration of a channel until it senses a transmission from another base station, and structure and techniques for transferring control of the mobile station to another base station in response to the sensed transmission.

Handoff monitoring in cellular communication networks using slow

A TDMA RF received signal is demodulated by first being filtered with a fixed transversal filter having a characteristic selected for matching a fixed square root raised cosine pulse characteristic of the received signal. The filtered signal is then adaptively filtered for compensating for a time varying impulse response of the channel. The adaptive filtering is performed initially during a synchronizing portion (preamble) of the filtered signal in accordance with a fast recursive least squares algorithm. Subsequent filter adaptation to a data portion of the filtered signal is accomplished in accordance with a computationally less expensive normalized least mean square procedure. The adaptive filter repetitively applies a modified Viterbi algorithm to blocks of 2D symbols, such that D symbols are released for adapting the adaptive filter means during the data portion of the filtered signal and the signal. The released symbols are also employed for adapting elements required in computing a metric for the modified Viterbi algorithm and the reconstructed signal used to form an error signal that drives the adaptation algorithms.

Growing community of inventors

Beverly Hills, CA, United States of America

Anand Narasimhan