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Patent

Composite data transmission system

TLDR
In this article, the authors proposed a composite data transmission system where packet switching stations adapted to transmit data of the kind for which transfer delay and periodicity do not matter and operated to detect collisions between packets in the light of alterations in the DC voltage level of packet signals.
Abstract
A composite data transmission system wherein packet switching stations adapted to transmit data of the kind for which transfer delay and periodicity do not matter and operated to detect collisions between packets in the light of alterations in the DC voltage level of packet signals and circuit switching stations adapted to transmit data of the kind requiring periodic transmission are connected to one and the same transmission line, which composite data transmission system is characterized by causing DC voltage signals of a fixed magnitude to flow with prescribed periods through the transmission line thereby enabling the packet switching stations to recognize collisions and permitting the circuit switching stations to exchange communication during the existence of the packet switching stations' recognition of collisions and permitting the packet switching stations to exchange communication during the absence of the DC voltage signals' flow.

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Citations
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TL;DR: In this article, a multi-carrier orthogonal frequency division multiplexing (OFDM) system is presented, where a receiver is configured to de-modulate symbols from at least one of a plurality of spectrally overlapping carrier signals to produce a receiver output, and a transmitter is modulated to modulate symbols onto at least a fraction of the overlapping signals to determine when a collision has occurred on the first carrier.
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Method and device for managing access to the transmission medium of a multiservice distributed switching network

TL;DR: In this paper, the authors present a method and device for managing access to the transmission medium of a multiservice distributed switching network adapted to switch traffic in synchronous circuit-switched mode and in asynchronous packet switched mode.
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Systems for synchronous multipoint-to-point orthogonal frequency division multiplexing communication

TL;DR: In this paper, a head end controller is proposed to control a plurality of service units in a multi-carrier transmission scheme, where each service unit is assigned to at least one subband of a transmission bandwidth.
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TL;DR: In this article, a first remote for communicating with a host using orthogonal frequency division multiplexing (OFDM), the host communicatively coupled to a plurality of remotes in a multipoint-to-point configuration.
References
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Patent

A local area contention network data communication system

TL;DR: In this paper, a station for a data transmission network is adapted to operate in a cyclic mode for contending for access to the network channel along with other stations of the network.
Patent

Integrated packet switching and circuit switching system

TL;DR: In this article, an integrated packet switching and circuit switching system comprising a number of switching modules (1000) each connected to a different plurality of user terminals (1001) is described.
Patent

Collision avoiding system, apparatus and protocol for a multiple access digital communications system including variable length packets

TL;DR: In this paper, the delay is related to the electrical distance between the station which has the packet to transmit, and a station which priorly transmitted a packet including a start-of-cycle packet.
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Integrated circuit/packet switching system

TL;DR: In this article, an integrated circuit/packet switching network comprising a plurality of nodes and one or more common access loops for inter-node network comprises a fixed time cycle frame format allotted to the loop or loops.
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Bulk/interactive data switching system.

TL;DR: In this paper, the subject switching system uses a packet switch (106) connected in parallel with the circuit switch (101) to handle bursty data traffic from interactive terminals (T11).