A timing control arrangement that dynamically controls the distribution of iming information in a distributed digital communication system. A reference timing signal is distributed from a reference master node to all other nodes in the system. The distribution is accomplished on a dynamic basis without the use of a central control. Each node is connected by links to at least one other node and each node receives timing signals from all of the links to which it is connected. Each node selects one...

A precision distributed parameter delay line for use in high speed circuitry requiring very precise nanosecond delay intervals. The delay line, in one preferred embodiment, comprises a section of coaxial cable transmission line having a central conductor and a coaxially aligned conductive sheath with the sheath preferably being insulated over its length. The section of coaxial cable tranmission line functions as a low impedance delay element of extremely small outer diameter whose length may be ...

A system for accomplishing distributed PABX functions without tying up lines or channels of communication for each communication. Station identifying address codes are assigned to the subscribers with a plurality of address codes being available to a single subscriber at a given time. The address codes are stored in registers located at the subscriber stations and transferred to receiving stations to effect communication. The processing and handling of the address codes is accomplished locally a...

A timing control arrangement that dynamically controls the distribution of timing information in a distributed digital communication system having standard nodes and prioritized master nodes. Reference timing signals to control the system are distributed from the highest priority master node currently operational. Should a higher priority master node than the current master node become operational, the higher priority master node automatically takes control of the timing for the system. Each nod...

A system and method for distributed cache. Cache tag storage and cache data storage are maintained in separate pipeline stages. Cache tag storage is operated by a data producer. Cache data storage is operated by a data consumer. Cache hits and misses are determined by the data producer prior to any operations being performed by the processor. In the event of a cache miss, produced data is sent to the processor to be processed. In the event of a cache hit, the cache address of the corresponding p...

A distributed amplifier having a plurality of cascode amplifying circuits, and which causes little deterioration of the output waveform. In a preferred embodiment, the source potentials of the source-grounded transistors of the respective amplifying circuits are set individually. The source potentials of none or one or more of the source-grounded transistors are set at +0.8 volts, and the source potentials of the remaining source-grounded transistors are set at zero volts. The voltage gain of th...

A method of transmitting data bits over a modem connection. The method includes receiving a first stream of data bits, by a first modem, performing a first set of one or more communication tasks on the first stream of bits, by the first modem, so as to generate a second stream of bits, modulating the second stream of bits, by the first modem, so as to form a modulated signal, transmitting the modulated signal from the first modem to a second modem, demodulating the modulated signal by the second...

Circuits, methods, and apparatus for FIFO memories made up of multiple local memory arrays. These embodiments limit the number and length of interconnect lines that are necessary to join two or more local memory arrays into a single, larger functional unit. One exemplary embodiment of the present invention provides a FIFO made up of a number of FIFO sub-blocks connected in series. Each FIFO sub-block includes local read and write address counters such that read and write addresses are not bused ...

The present invention relates generally to conferencing network systems and more specifically to a method and a device for automatic generation and allocation of optimized setup of multiple end points (EPs) to multi site connection units (MCUs) in a distributed video conference system according to a weighting function.The invention further relates to a method and device for monitoring and administering distributed MCUs connected together and set up in a call in a distributed video conference sys...

A computer system comprises a plurality of shelves. Each shelf has a carrier for removably receiving a plurality of information processing modules and a switching module. Each shelf also has an interconnection member for providing connections between the information processing modules and the switching module. The switching modules of the respective shelves are interconnected in a logical stacking configuration to form a logical stacking arrangement.