Disclosed herein is an amplifier circuit arrangement for sensing very small currents (in the microampere region) whose accuracy is unaffected by variations of the input characteristics of the amplifying device. A current generating signal means is directly coupled to the input of the amplifying device, whose input parameters may vary with temperature and from unit-to-unit. A second current generating means, also directly coupled to the amplifying device input, is used to bias the input and to se...

A Layered Network system may provide varying cost from order NlogN low-cost networds, to completely-routing, fully-Layered networks with cots of order Nlog .sup.3 N. Layered networks are composed of switches and point-to-point connections between them. These networks establish connections from requestors to responders by relaying "requests" through the switches. Each switch has built-in control logic to route requests and responses. The switch setting is determined using the comparison of the re...

A communication network comprises a number of slotted rings which interconnect nodes so that information is carried between nodes in the form of slot sized packets on each ring. Each node includes controller for controlling the maximum acces delay experienced by packets belonging to the synchronous services, and selector for allowing any synchronous connection to utilize the first available ring for transmission of packets.

The present invention relates to a loop network arranged by loop-connecting a control station and a number of substations through a main transmission path where at least one of the substations comprises a branch station inserting and coupling another station into the main transmission path as a lobe or subloop. In order to prevent an out-of-step condition of the main transmission path, resulting from a failure in the lobe or subloop, the branch station includes a frame buffer for normally select...

A transmitter station has a data source, a crypto unit, a buffer store for encrypted signals and a transmitter with an aerial, all with a common power supply. A switching control unit has a position in which it connects data source and crypto unit to the power supply but isolates transmitter therefrom, and another switch position in which transmitter is connected to the power supply while data source and crypto unit are isolated therefrom. In this way, if any signals output from data source pass...

A time-division multiplex transmission network system having a plurality of data processing stations, in which data of a predetermined number of bits is transmitted on a data transmission line for a period of time determined by the number of bits of data by one bit in synchronization with a synchronization signal extracted from a predetermined time series code string signal when one of code patterns derived from the predetermined time series code string signal coincides with a predetermined code...

Disclosed is a passive delay network for insertion in the high frequency signal path of a crossover network in a high fidelity loudspeaker. The delay network provides means to adjust the optimum listening window electrically rather than by changes in the physical construction of the speaker cabinet. Electroacoustic high frequency and low frequency drivers may be mounted in a planar baffle or mounted co-axially. The delay network retains a "flat" amplitude-frequency characteristic and minimizes t...

A capacitor network is provided for noise elimination on the input/output terminals of an electric computer or the like. A plurality of data electrodes are disposed on one surface of a dielectric substrate, and a common electrode is disposed opposite to the data electrodes on the other surface of the dielectric substrate. A pair of lead terminals are connected to each data electrode at both ends of the electrode, and at least one ground terminal is mounted to the common electrode, thereby formin...

A capacitor network mounted to an input-output unit of a computer for eliminating noises, which disposes on one surface of a dielectric substrate a plurality of electrodes and on the other surface of the same at least one common electrode opposite to the plurality of electrodes so that lead terminals connected to each of the plurality of electrodes and earth terminals connected to the common electrode are formed of metal strip. A pair of terminal blocks formed of the metal strip are inserted ont...

A new associative computation network that is capable of storing multi-bit vectors includes a decision network and a feedback arrangement that, functionally, is separable into serially connected networks. The first network has its inputs connectd to the outputs of the decision network and is arranged to develop sets of excitatory and inhibitory drive signals. Each set corresponds to a stored vecor. For each different output state of the decision network, a different one of the drive signal sets ...