Matches 1 - 50 out of 54 1 2 >
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7397791 Telephone communication system over a single telephone line  
An improved telephone system over a single telephone line within a residence or other building is disclosed, supporting exchange features and enabling easy expansion for multiple external lines....
7321572 Frame relay protocol-based multiplex switching scheme for satellite mesh network  
A frame relay protocol-based earth station interface architecture provides full mesh connectivity for a relatively small number of network stations. The fundamental component of the architecture is...
7317793 Method and system for providing DC power on local telephone lines  
A system for providing DC power on local telephone lines, such as telephone lines in a building or office, for powering devices and circuitry associated with communications over those telephone...
7313035 Methods and apparatus for improved memory access  
A memory access scheme employing one or more sets of shift registers interconnected in series to which data may be loaded from or written into one or more memory devices. That is, data from the...
7274688 Telephone communication system over a single telephone line  
A module and kit for coupling at least one telephone service signal to at least one telephone device over a wiring. The network includes: a wiring having at least two conductors for carrying...
7257118 Frame relay switched data service  
A new type of data transport service which uses a frame relay layer 2 data link connection identifier (DLCI) to select among various service types, feature sets, and/or closed user groups (CUGs). A...
7227932 Multi-band data over voice communication system and method  
An interactive system and method for communicating data over a network of twisted pair wiring that is in active use as a conductive path for ordinary telephone signals. Data is encoded redundantly...
7224780 Multichannel transceiver using redundant encoding and strategic channel spacing  
A transceiver is operable to connect to a 2-wire conductive path to communicate information in multiple channels to a companion transceiver. Data is encoded redundantly inside the channels,...
7197662 Methods and systems for a storage system  
A storage system that may include one or more memory sections, one or more switches, and a management system. The memory sections include memory devices and a section controller capable of...
7149289 Interactive data over voice communication system and method  
An interactive system and method for communicating data over a network of twisted pair wiring that is in active use as a conductive path for telephone signals. A first channel is used for...
7145990 High-speed data communication over a residential telephone wiring network  
A method and system for communicating between a number of computers within a residence over an active telephone network, and for communicating data between a telephone exchange and the residence in...
6970537 Video transmission and control system utilizing internal telephone lines  
A video transmission system for facilitating transmission of video and control signals, particularly infrared remote control signals, between different locations in a residence using existing...
6879526 Methods and apparatus for improved memory access  
A memory access scheme employing one or more sets of shift registers interconnected in series to which data may be loaded from or written into one or more memory devices. That is, data from the...
6847611 Traffic management for frame relay switched data service  
A new type of data transport service which uses a frame relay layer 2 data link connection identifier (DLCI) to select among various service types, feature sets, and/or closed user groups (CUGs)....
6771617 Frame relay protocol-based multiplex switching scheme for satellite mesh network  
A frame relay protocol-based earth station interface architecture provides full mesh connectivity for a relatively small number of network stations. The fundamental component of the architecture is...
6625130 Frame relay protocol-based multiplex switching scheme for satellite mesh network  
A frame relay protocol-based earth station interface architecture provides full mesh connectivity for a relatively small number of network stations. The fundamental component of the architecture is...
6614801 Circuits and methods for detecting the mode of a telecommunications signal  
A method for detecting the mode of a telecommunications signal is provided. The method receives the telecommunications signal and contemporaneously evaluates the telecommunications signal for...
6526068 Interface control of communication between a control processor and a digital signal processor  
A digital simultaneous voice and data (DSVD) system includes a communication random access memory (COMMRAM) driver and interface for dynamically remapping COMMRAM memory contents. The communication...
6449281 Interface control of communication between a control processor and a digital signal processor  
A digital simultaneous voice and data (DSVD) system includes a communication random access memory (COMMRAM) driver and interface for dynamically remapping COMMRAM memory contents. The communication...
6381227 Frame relay protocol-based multiplex switching scheme for satellite mesh network  
A frame relay protocol-based earth station interface architecture provides full mesh connectivity for a relatively small number of network stations. The fundamental component of the architecture is...
6219692 Method and system for efficiently disbursing requests among a tiered hierarchy of service providers  
A system and method for dispatching computer system service requests to multiple service providers in a tiered-parallel fashion such that a request can be satisfied in the shortest time possible by...
5999621 Line card shelf  
A line card shelf is disclosed. The line card shelf includes groups of line card receptacle connectors. Each receptacle connector has electrical contacts receiving corresponding line card contacts....
5994892 Integrated circuit design automatic utility meter: apparatus & method  
An automatic utility meter is provided for collecting, calculating, storing and displaying data correlative of consumption of utility commodities such as electric power, gas, water and the like. In...
5946304 Method and apparatus for controlling the operation of a modem capable of transmitting and receiving both voice and data signals  
The present invention enables a dial modem capable of simultaneous voice and data (SVD) operation and connected to a conventional telephone set to automatically select between SVD operation, analog...
5915003 Sketching unit for transmission of sketches and notes over normal telephone lines  
A sketching system sketches first notes to be transmitted over a telephone line receives second notes from another sketching system. The sketching system includes a signal de-combiner device,...
5881047 Simultaneous analog and digital communication with improved phase immunity  
A first phase change is introduced to an analog signal based on a symbol specified by a data signal, where the symbol is one of a plurality of symbols in a symbol constellation. The analog signal...
5869821 Credit inquiry service system and method  
A credit inquiry service system for inquiring about the credit standing of a check or credit card uses subscriber lines of a public communication network. The system includes credit inquiry...
5859877 Simultaneous analog and digital communication using fractional rate encoding  
Digital data is encoded using a modulus m converter to produce fractionally encoded words, where m is the nearest integer larger than 2 c and c is a noninteger. The fractionally encoded words are...
5844944 Simultaneous analog and digital communication using partitioning of bits into words  
Digital data is encoded by partitioning a predetermined number of bits into two separate words. The first word is mapped into a first symbol constellation to produce a first data signal. The second...
5825861 Telecommunications networks  
In a telecommunications network of the kind which handles non-time-critical calls (NTCC) in addition to normal telephony, a congestion indication is transmitted to NTCC transmitting platforms if...
5719923 Sketching unit for transmission of sketches and notes over normal telephone lines  
A sketching system sketches first notes to be transmitted over a telephone line and receives second notes from another sketching system. The sketching system includes a signal de-combiner device,...
5684834 Simultaneous analog and digital communication using fractional rate encoding  
Digital data is encoded using a modulus m converter to produce fractionally encoded words, where m is the nearest integer larger than 2 c and c is a noninteger. The fractionally encoded words are...
5661718 Simultaneous analog and digital communication  
A method and apparatus for concurrent communication of analog information and digital information. In general terms, when the communication channel is viewed as a multi-dimensional space, the...
5642379 Technique for modulating orthogonal signals with one or more analog or digital signals  
An arrangement for modulating orthogonal signals with an analog signal or a digital information signal. In either event, the information signal is partitioned into component signals which...
5604682 Information service control point which retrieves information as blocks of data and outputs the retrieved data via a communications link  
Various methods and associated apparatuses are provided for communicating data from a central station to a remote station over some form of communications path. The data, which together form at...
5559791 Companding of voice signal for simultaneous voice and data transmission  
In a simultaneous voice and data communications system, a voice signal is added to a data signal before transmission over the public switched telephone network (PSTN). In particular, in every...
5537441 Controlled simultaneous analog and digital communication  
A method and apparatus for control of concurrent communication of analog information and digital information. In general terms, when the communication channel is viewed as a multi-dimensional...
5537436 Simultaneous analog and digital communication applications  
A number of arrangements and methods that achieve concurrent communication of analog information and digital information. In general terms, when the communication channel is viewed as a...
5521942 Method for increasing the dynamic range of a signal in a simultaneous voice and data system by the use of overlapping signal point regions and trellis coding  
A communications system simultaneously transmits both a primary data signal and a secondary voice signal in such a way that the dynamic range of the secondary voice signal is increased even though...
5475713 Shaped signal spaces in a simultaneous voice and data system  
In a simultaneous voice and data communications system, a voice signal is mapped into an N-dimensional signal space constellation as a vector, and added to a reference signal point, i.e., a data...
5475691 Voice activated date rate change in simultaneous voice and data transmission  
A simultaneous voice and data modem performs "voice-activated" data rate changes to improve the transmission quality of the voice signal. In particular, when the simultaneous voice and data modem...
5473675 Call establishment for simultaneous analog and digital communications  
A modem, capable of simultaneously coupling voice and data signals, connects local digital terminal equipment (DTE) and a local telephone to a communications link. To prevent the local DTE from...
5448555 Simultaneous analog and digital communication  
A method and apparatus for concurrent communication of analog information and digital information. In general terms, when the communication channel is viewed as a multi-dimensional space, the...
5442542 Machine state virtualizer  
A machine state virtualizer is an apparatus for controlling an electronic device having a switch matrix of X-lines and Y-lines (sometimes referred to as crosspoint switches) with a microcomputer....
5440585 Applications of simultaneous analog and digital communication  
A method and apparatus for concurrent communication of analog information and digital information. In general terms, when the communication channel is viewed as a multi-dimensional space, the...
5436930 Simultaneous analog and digital communications with a selection of different signal point constellations based on signal energy  
An analog signal is added to a data signal that specifies a symbol in a symbol constellation to produce a combined signal that is transmitted to a receiver. The symbol constellation is picked from...
5394458 System for the remote monitoring of a reproduction apparatus  
A reproduction apparatus includes a communication interface having an RS-232 interface and a modem, thereby permitting both on-site and remote communication with a diagnostic and administrative...
EP0630133A2 Modem applications of simultaneous analog and digital communication.  
A method and apparatus for concurrent communication of analog information and digital information. In general terms, when the communication channel is viewed as a multi-dimensional space, the...
EP0630130A2 Controlled simultaneous analog and digital communication.  
A method and apparatus for control of concurrent communication of analog information and digital information. In general terms, when the communication channel is viewed as a multi-dimensional...
5369691 Telephonic information communication method and apparatus  
An apparatus for communicating information between customer locations and remote locations desiring the information exchange which allows the communications to occur over existing communications...
Matches 1 - 50 out of 54 1 2 >