Data communication terminal providing variable length message ca

Details Data communication terminal providing variable length message ca Data communication terminal providing variable length message ca

1992-05-29

1994-01-25

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 951, 34082506, 34082544, 379 57, H04J 316, H04Q 700, G08B 522

Patent

active

052822052

ABSTRACT:
A data communication terminal (102) transmits messages to a plurality of data communication receivers (106), and has an input for receiving messages and assigning the same into a plurality of transmission frames which are assigned for transmission to the plurality data communication receivers. The data communication terminal (102) comprises a first memory (210) for storing the received messages, a timer (214) for generating periodic timing signals, a controller (204) responsive to the periodic timing signals, for recovering the stored messages and queueing the same into a second memory (1910) having a predetermined transmission frame queue capacity. A monitoring circuit (1902, 1908) monitors the transmission frame queue capacity of the second memory (1910), and expected transmission frame queue capacities for one or more subsequent transmission frames. The monitoring circuit (1902, 1908) determines when the messages stored within the second memory (1910) will exceed the predetermined transmission frame queue capacity, and enables the storage of the excess messages in a third memory (1912). A frame batching controller (1902) generates designating information designating one or more of the subsequent transmission frames during which the excess messages stored are to be transmitted. A transmitter (104) transmits the messages and designating information stored in the second memory (1910) within the assigned transmission frame, and transmits the excess messages stored in the third memory (1912) within the one or more of the subsequent transmission frames designated by the designating information.

REFERENCES:
patent: 4642632 (1987-02-01), Ohyagi et al.
patent: 4947420 (1990-08-01), Stahl et al.
patent: 5072444 (1991-12-01), Breeden et al.
patent: 5109220 (1992-04-01), Breeden et al.

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