Abstract: A system and method for information communication between physically separated processor-based systems. Disclosed is a centralized communication array providing point to multipoint information communication between processor-based systems utilizing 5 communication nodes. Such information communication may be between two processor-based systems, each utilizing communication nodes or may be between a processor-based system utilizing a communication node and a processor-based system coupled to the centralized communication array through a backbone.

Abstract: A system and method for information communication between physically separated processor-based systems. Disclosed is a centralized communication array providing point to multipoint information communication between processor-based systems utilizing communication nodes. Such information communication may be between two processor-based systems, each utilizing communication nodes or may be between a processor-based system utilizing a communication node and a processor-based system coupled to the centralized communication array through a backbone.

Abstract: A system and method for information communication between physically separated processor-based systems. Disclosed is a centralized communication array providing point to multipoint information communication between processor-based systems utilizing communication nodes. Such information communication may be between two processor-based systems, each utilizing communication nodes or may be between a processor-based system utilizing a communication node and a processor-based system coupled to the centralized communication array through a backbone.

Abstract: A system and method for information communication between physically separated processor-based systems. Disclosed is a centralized communication array providing point to multipoint information communication between processor-based systems utilizing communication nodes. Such information communication may be between two processor-based systems, each utilizing communication nodes or may be between a processor-based system utilizing a communication node and a processor-based system coupled to the centralized communication array through a backbone.

Abstract: A system and method for information communication between physically separated processor-based systems. Disclosed is a centralized communication array providing point to multipoint information communication between processor-based systems utilizing communication nodes. Such information communication may be between two processor-based systems, each utilizing communication nodes or may be between a processor-based system utilizing a communication node and a processor-based system coupled to the centralized communication array through a backbone.

Abstract: A method of providing B channel diagnostics to an integrated services digital network (ISDN) comprises the steps of monitoring error performance on the ISDN D channel and comparing the D channel error performance to a predetermined criterion as a measure of the B channel error performance. If the predetermined threshold is exceeded any of a number of possible actions can be taken by a network diagnostics controller including various loopback tests, alerts or network reconfiguration.

Abstract: In a method and apparatus for processing color video signals, a switching network controlled by a control computer initially applies a composite video signal to a single analog to digital converter for storage in a memory. The composite signal is then repeatedly retrieved from the memory in order to be sequentially decomposed into required color characteristics such as red, blue and green. The decomposed signal is also applied to the input of the switching network so that the control computer can alternately multiplex each of the three decomposed signals into the memory. In this manner, the composite red, blue and green information is sequentially stored in memory for manipulation by a signal processing computer. This eliminates the need for multiple analog to digital converters operating in parallel.

Abstract: In a data communication system involving modems transmitting over a link including terrestrial and one or more satellite links, a nontransmitting modem sends a secondary channel tone during the absence of data transmission. The cessation of said tone is detected by the other modem and used to de-squelch the remote modem receiver. In this manner, the receiver is protected from echoes impinging upon it during long transmission delay times. This method optimizes data throughput by adapting to the transmission delay of the circuit.

Abstract: There is disclosed an office communication system adapted to handle both bursty and continuous data transmission over a single transmission facility to a central switching network. A programmable station controller is used at each station location to interface a number of transmission inputs to the single communication link. The programmable station controller is arranged to statistically multiplex the inputs associated with the bursty data while allowing the continuous data to pass on dedicate time slots. Transmission compatibility between the types of data transmission received from the bursty and continuous data inputs is assured by subdividing the transmission on the single link into frames having four time slots. A fixed number of time slots of each frame are assigned by a central controller to active ones of the continuous data inputs while other time slots of each frame are assigned to the multiplexed bursty data inputs.

Abstract: There is disclosed an arrangement for removing error signals on a loop conferencing system. A decay circuit is inserted in the conference loop and all signals passing through the decay circuit are reduced by a constant factor. Those signals which are not regenerated by the valid inputs to the loop are reduced to zero within a few cycles.

Abstract: There is disclosed a digital loop for interconnecting a number of data interchangers, each data interchanger connectable over a single high speed communication link to a remote station controller. The high speed link is arranged to bidirectionally transfer both bursty and continuous data to and from the data interchanger. A central controller is serially inserted in the digital loop and serves to assign time slots in a frame for information exchange between the various programmable data interchangers. Each frame contains a first field for data interchange between the data interchangers and the central controller; a second field having time slots assignable under control of the controller to a specific set of data interchangers for transferring information from the continuous data inputs; and a third field having time slots assignable under control of each data interchanger for transferring information from the bursty data input.