A novel display control and information management system seamlessly integrates layered and slotted formatted data from both local and remote sources to provide a highly versatile information display. The system permits selective control of display so that complex data and data flows can be seamlessly accessed with enhanced cognition of salient information by the User.

Graphic-information flow method and system for visually analyzing patterns and relationships

In one aspect of the present invention, a network gateway is configured to facilitate on line and off line bi-directional communication between a number of near end data and telephony devices with far end data termination devices via a hybrid fiber coaxial network and a cable modem termination system. The described network gateway combines a QAM receiver, a transmitter, a DOCSIS MAC, a CPU, a voice and audio processor, an Ethernet MAC, and a USB controller to provide high performance and robust operation.

Gateway with voice

A communication server maintains profile information on twisted pair lines in a profile table. This profile information may be generated in a training session and then retrieved to train a modem or transceiver unit to communicate data over the associated twisted pair line using XDSL communication techniques.

Communication server apparatus and method

A serial intelligent cell (SIC) and a connection topology for local area networks using Electrically-conducting media. A local area network can be configured from a plurality of SIC's interconnected so that all communications between two adjacent SIC's is both point-to-point and bidirectional. Each SIC can be connected to one or more other SIC's to allow redundant communication paths. Communications in different areas of a SIC network are independent of one another, so that, unlike current bus topology and star topology, there is no fundamental limit on the size or extent of a SIC network. Each SIC can optionally be connected to one or more data terminals, computers, telephones, sensors, actuators, etc., to facilitate interconnectivity among such devices. Networks according to the present invention can be configured for a variety of applications, including a local telephone system, remote computer bus extender, multiplexers, PABX/PBX functionality, security systems, and local broadcasting services. The network can use dedicated wiring, as well as existing wiring as the in-house telephone or electrical wiring.

Local area network of serial intelligent cells

A device, network and method wherein a standard wireless modem is coupled to wiring for carrying a wireless baseband signal that may be OFDM based, and may be directly generated by the wireless IF modem, or extracted from the modem RF signal. The wiring may be a building utility wiring, such as telephone, AC power or CATV wiring. The baseband signal is carried simultaneously with the utility service signal over the utility wiring using Frequency Division Multiplexing. The device may be enclosed with a data unit, a standalone dedicated enclosure, within an outlet or as a plug-in outlet adapter. Data units may couple the device by a wiring port such as standard data connector, or via wireless connection. The device may be locally powered or via a power signal carried over the wiring. This abstract is not intended to limit or construe the scope of the claims.

System and method for carrying a wireless based signal over wiring

A modem operating selectively in the voice frequency and higher frequency bands which supports multiple line codes. A DSP is used to implement different existing ADSL line codes on the same hardware platform. The modem negotiates in real time for a desired line transmission rate to accommodate line condition and service cost requirements which may be implemented at the beginning of each communication session by exchange of tones between modems. A four step MDSL modem initialization process provides line code and rate compatibility. The handshake protocol and receiver algorithm for CAP based MDSL modems allows reliable modem synchronization over severely amplitude distorted channels and makes use of a short length sequence to train a synchronizing equalizer at the receiver. The algorithm and corresponding training sequence to train the transmitter filter are provided. After training to this sequence, a matched filter or correlator detects the inverted sync sequence. Detection of the inverted sequence signals commencement of normal reference training of the demodulation equalizers. An internal state machine in an MDSL modem records and monitors line status and notifies state change to other MDSL and host processor. The protocol for exchanging line connection management messages is a simplified LCP for MDSL. In a DMT system, a transmitter filter reduces the length of effective channel impulse response. Iimplementation of the filter combines time domain convolution and frequency domain multiplication to reduce needed computation power. The filter coefficients update may occur through a feedback channel.

Multimode digital modem

The present home networking method and system is based on the IEEE 802.11 wireless networking standard expanded to encompass home phone line media communication and/or home power line media communication operation seamlessly. For each station in home network (i.e., wireless, phone line and power line), the protocol stack at the PHY layer and above, QoS, and network security are all based on the 802.11 standard. Chipset implementations differ in an applied analog interface that is specific to the respective medium. Station-to-station transmission between wireless and wired terminals is enabled via an intelligent access point which includes an analog interface for each of the medium types. Further, each station can be configured with the appropriate analog interface to communicate directly with any wireless station. The access point is also expandable to form extended service sets.

Universal broadband home network for scalable IEEE 802.11 based wireless and wireline networking

A telecommunications system using DSL modems (36, 38) detects on-hook or off-hook states of a local loop telecommunications line (18). If the local loop (18) is in an off-hook state, the normal data communication rates are used. If the local loop is in an on-hook state, the unused voice band is allocated to either the upstream band and/or downstream band of the DSL modems, in order to increase data communication rates.

DSL communication system with improved bandwidth

A modem that operates selectively in the voice-band
frequency band and at higher frequency bands is provided.
This modem supports multiple line codes, like DMT and CAP. The modem uses a Digital Signal Processor (DSP), so
that different existing ADSL line codes, such as Discrete
MultiTone (DMT) and Carrierless AM/PM (CAP), can be
implemented on the same hardware platform. The modem
negotiates in real-time, for a desired line transmission
rate to accommodate line condition and service-cost
requirement. The line code and rate negotiation process may be
implemented at the beginning of each communication session
through the exchange of tones between the modems. A four-step
MDSL modem initialization process is provided for line
code and rate compatibility. A new synchronization startup procedure for CAP based
MDSL modems is provided. The handshake protocol and
receiver algorithm allow reliable modem synchronization
over severely amplitude distorted channels such as standard
telephone twisted-pair wire. The algorithm makes use of a
short length sequence to train a synchronizing equalizer at
the receiver. After training to this sequence, a matched
filter or correlator is used to detect the inverted sync
sequence. The detection of the inverted sequence signals
the start of the normal reference training of the CAP
demodulation equalizers. The MDSL line connection management process provides a
simple, efficient, and flexible interface to manage the
line connection between MDSL-C (MDSL in Central Office
site) and MDSL-R (MDSL in resident site) in the
telecommunication Wide Area Networking environment. An
internal state machine in an MDSL modem records and 
monitors the line status and notifies the state change to
the other MDSL and also the host processor. The protocol
used for exchanging line connection management messages is
a simplified Link Control Protocol (LCP) for MDSL.

Multicode modem with a plurality of analogue front ends

PROBLEM TO BE SOLVED: To prevent the complication of a modem and a cost rise for a high bit transmission speed by using a programmable digital signal processor and running one of the modem softwares of two bands in combination with an analog front end and a common host interface. SOLUTION: This modem 100 performs reception at a frequency within a voice band in a voice band analog front end(VBAFE) 110 and performs transmission and the reception at the frequency of a high voice band higher than the voice band in a digital subscriber line analog front end (DBL AFE) 120 with a subscriber line 140 through a splitter 130. Further, the modem 100 is operated as the high bit transmission speed digital subscriber line modem of the high voice band or a voice band modem by switching a program executed by the programmable digital signal processor(DSP) 150. Thus, the complication of the modem 100 and the cost rise are prevented even for the high bit transmission speed.

Terence J. Riley

Papers

Multimode digital modem

Universal broadband home network for scalable IEEE 802.11 based wireless and wireline networking

DSL communication system with improved bandwidth

Multicode modem with a plurality of analogue front ends

Method and modem for demodulating digital subscriber line modem signal