Communication interface for independently generating frame infor

Details Communication interface for independently generating frame infor Communication interface for independently generating frame infor

1989-02-21

1992-12-29

Lee, Thomas C.

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3642383, 3642423, 3642392, 3642397, 36423951, 3642601, 3642844, 3649395, 3649393, 36492799, 3649328, 364DIG1, 364929, 3642385, 364DIG2, 370 60, 395250, G06F 1338

Patent

active

051758180

ABSTRACT:
A communication system including a communication control unit connected through a communication line to a different system, a high-ranking processor for control of the communication control unit, and a common memory used for transfer of data between the high-ranking processor and the communication control unit. The communication control unit includes a direct memory access controller and a line controller interconnected via a transmission-only path and a reception-only path. The communication control unit autonomously generates an information frame and stores it in the common memory. The direct memory access controller then reads the information frame and transfers it to the line controller via the transmission-only path in order to transmit the information frame to the different system.

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Masako Maruyama, et al., "Development of X.25 LAPB Handling LSI", Papers of Technical Group on Switching Engineering, Inst. of Electronics, Information and Communication Engineers of Japan, SE87-99 (Oct. 16 1987). (English Translation of Abstract Provided).

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