Abstract: Capability is provided to dynamically reallocate the multiplex data stream from one communication channel to a plurality of communication channels. This allows increased flexibility in responding to degradation of the main communication channel and in accommodating increased user demand exceeding the capacity of the main channel. A table is generated to control the DTE PORTs accessed during each slot of a multiplexer frame. A separate table is generated to control the allocation of multiplex data between communication channels. Both tables are generated based upon a common Hash table. A plurality of Hash tables correspond to different output data rates and permit the output rate of the multiplexer to coincide with the maximum output rate capacity of an associated transmission device such as a modem.

Abstract: A variable length string matcher uses absolute addressing of a history buffer; the longest matching string is determined by an associative content addressable memory.

Abstract: A combination of an end-to-end closed-loop rate control mechanism for controlling the flow of cells entering a cell relay communication network from an end system, along with a segment traffic control mechanism for protecting the segment against misbehaving or malfunctioning destination end systems provides a novel, more efficient traffic management system and method for cell flow regulation in a cell relay communication network.

Abstract: In a liquid crystal display, a crosstalk correction signal which is the same for all video or pixel input signals is provided either directly from the input signals or from the column signal. The input signals are combined with the correction signal and modulated onto carrier signals, then, e.g., may be coupled to the LCDs through a single-wire row or column connection. The correction signal can be derived from either the pixel input signals or the column signal.

Abstract: A device and method allocate bandwidth on internodal links in a communiation network such that worst case maximum delays and worst case average delays in a packet oriented network are guaranteed while providing statistical gains in maintaining predetermined end-to-end delay QOS objectives for different traffic types.

Abstract: A device (500) and method (400) for zero-padding constellation switching with frame mapping provides reduced complexity for mapping frames having possibly a fractional number of bits and a predetermined number of symbols while eliminating the usual disadvantages of constellation switching.

Abstract: The device (100) and method (700) of the present invention provides for detecting and correcting loss of frame synchronization in a communication system with multi-level trellis coding without additional allocation of channel capacity for such detection and correction.

Abstract: In a data packet communications network capable of transmitting a digitally coded data packet message including an error-check code from a source node to a destination node over a selected transmission link which includes at least one intermediate node operative to intentionally alter a portion of a message to form an altered message which is ultimately routed to the destination node, a method of recomputing at the intermediate node a new error-check code for the altered message with a predetermined number of computational operations, i.e. computational time, independent of the length of the message, while preserving the integrity of the initially computed error-check code of the message.

Abstract: A flexibly adjustable mounting clip assembly and method for providing the assembly for a pager includes a swivel assembly (104) for raising and rotating the mounting clip (102) approximately 180.degree. to provide a reversibly positioned clip. The clip allows for positioning in an introverted position, i.e., facing the bent section toward the pager and for positioning in an extroverted position, i.e., facing away from the pager. In addition, a transparent portion may be positioned below the clip assembly for allowing observation of the information display of the pager.

Abstract: An adaptive congestion control device (600) and method minimize congestion using independent congestion level indicators. The invention allows efficient recovery for an integrated packet network that becomes congested and allows a user to utilize the network on a space-available basis when capacity is available.

Abstract: The present invention provides for fast packet information transfer from a first type switching system to a diverse, i.e., different, type switching system by adaptation of a format of each fast packet from the first type switching system to a format that is portable across the second type switching system. For example, the present invention enables transport of fast packets from a fast packet switching system across a cell relay system and vice versa, from a fast packet switching system across an asynchronous transfer mode system and vice versa, and so on.

Abstract: A frame code word (FCW) is inserted in a time division multiplexed slot in a modem data stream preferably using an embedded secondary channel. A receiving modem demultiplexes the FCW and compares it against the known transmitted FCW. Based upon the number of incorrect FCW's received, a reinitialization command is generated causing the modems to begin a retraining sequence-in view of the detected error condition.

Abstract: A cell processor and a method for a cell processor (CP) utilize Cell Transit Queues to partition cell processing of cells from a Cell Interconnect in a cell relay network, thereby facilitating cost-efficient cell transmission from a cell interconnect to a node output.

Abstract: A device and method utilize a linear feedback/feedforward configuration to estimate and cancel a listener echo wherein equalizer (202) and listener echo cancellation (204 and 208) units are jointly updated, allowing determination of an error signal (204 and 208), in place of the former method of separate error signal determination for each of an equalizer and a listener echo canceller. An improved phase-correction scheme is utilized to compensate the frequency offset in the listener echo. The relationship between the listener echo and talker far echo is utilized to facilitate the listener echo cancellation.

Abstract: A method (100) and device (200) increase efficiency of a data compression encoder or decoder by testing whether an input string is a maximum length string upon successful match of the input string in a dictionary. Where the length of the input string is equal to a predetermined maximum string length, the string matching process is terminated without processing an additional input character that would cause an unsuccessful string match. The maximum length string test is accomplished by testing a string length counter for the value zero, where the string length counter is set to the maximum string length value when the input string is NULL or alternatively is set to the maximum string length minus one when the input string is a one character string, and the string length counter is decremented for each input character that extends the matched input string.

Abstract: A fallback strategy for a system (700) and method (200) is provided for rerouting a call that fails to be established utilizing a first set of constraints in a communication network system. This strategy enables the communication network system to utilize a look-around-first type of preemption that avoids unnecessary preemption and provides alternate routing for a call according to predetermined constraints selected by a user.

Abstract: The present invention includes a low-earth satellite-based paging broadcast system (100) and method (200, 300) that maximizes spectral efficiency and minimizes power expenditure for the broadcast of paging messages by broadcasting the messages to terminator- or originator-selectable portions of the total system coverage area. The terminator selects a long-term preferred geographic area (LTPGA), and optionally, a short-term preferred geographic area (STPGA). The originator provides the terminator ID, the message, and optionally provides a customized preferred geographic area (CPGA). Terminators and originators can easily modify the selectable geographic areas (SGA(s)): LTPGA(s), STPGA(s), and CPGA(s). The gateway converts the SGA(s) to addressable coverage areas (ACA(s)), and transmits a signal including the paging information, and ACA(s) to at least a first communication satellite (COM SAT).

Abstract: The present invention provides a novel scheme for automatically increasing data throughput in a communication system by having data compression with delay minimization done within a modem. A high speed modem includes a logical link negotiation unit for probing and determining data compression parameters (DCPs) for a synchronous data compression link with a remote modem and for inserting the DCPs and codeword combinations into compressed data. The modem also includes a physical layer connection unit coupled to synchronous data terminal equipment to provide a delay minimizing scheme that adjustably accommodates data delivery delay to the receiving modem. A method and system incorporate the functions of the high speed modem.

Abstract: An apparatus (100, 200) and method (300, 400) include an improved architecture for data processing that maintains data throughput while maintaining a reasonable circuit complexity. The method utilizes a system of calculating subsets of desired results that are independent of results of subsets not yet calculated, while providing a system of storage for data yet to be used and previously calculated results.