Multiplex communications – Wide area network – Packet switching
Patent
1991-12-20
1993-02-23
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
359118, 370 943, 370 99, H04J 326
Patent
active
051896710
ABSTRACT:
A transmit control store is provided for assembling recurrent data packets of information for transmission over an optical fiber communications network from a host digital terminal to a variable number of optical network units, wherein each optical network unit serves a variable number of individual subscriber stations, and wherein each frame contains a programmed number of optical network unit packets wherein each packet has a byte length related to the number of subscriber stations served and bandwidth required thereby. The transmit control store includes a user data buffer storage memory for storing user data bytes, a control memory for storing a control pattern for controlling the format of the packet, an overhead memory for storing packet overhead data at predetermined storage locations therein, a control byte counter for generating and simultaneously applying address values to the control memory and to the overhead memory, and decoding logic for decoding control bytes put out by the control memory to control selective data output of the user data buffer storage memory and the overhead memory. Each byte in the overhead memory has a storage which numerically corresponds to a value of its corresponding counter control byte which is used by the control memory to output the overhead memory byte from the overhead memory.
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Kovach Dennis E.
Raynet Corporation
Safourek Benedict V.
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