Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-11-08
1994-02-15
Lall, Parshotam S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307443, H03M 100
Patent
active
052875342
ABSTRACT:
Apparatus for coupling and decoupling a data terminal to a computer system of the kind that continues to interact with a device only while the computer system detects interaction by the device. The apparatus includes switching circuitry for connection between the data terminal and the computer system; the switching circuitry has a first mode in which a path is provided for interaction between the data terminal and the computer system, and a second mode in which the path is disabled and the data terminal may engage in other activities. The apparatus also includes communication circuitry, responsive to the switching circuitry, for interacting with the computer system at times when the path is disabled, in order to cause the computer system to continue to interact with the communication circuitry during those times and then to be immediately available for interaction with the data terminal when the path is again provided. In other aspects, multiple data terminals are served simultaneously from a single bi-phase communications processor of the kind having a RISC processor containing an integral coax interface, and crossover distortion is removed in the course of deriving a processed digital signal from positive and negative digital signal sample components that were formed by positive and negative threshold comparisons and which appear at a given sampling clock rate.
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Bloomberg Neil
Gist, Jr. William J.
Reuther Thomas
Welch Albra M.
Digital Equipment Corporation
Lall Parshotam S.
Treat William M.
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