Serial data transmission between redundant channels

Details Serial data transmission between redundant channels Serial data transmission between redundant channels

1991-05-31

1992-03-03

Shaw, Gareth D.

Boots, shoes, and leggings

364DIG2, 3649665, 3649671, 3649442, 36492794, 36492693, 371 681, G06F 1200, G06F 1108, G06F 1116

Patent

active

050939106

ABSTRACT:
Data is communicated between redundant channels formatted in blocks having an initial command word followed by a destination code, starting address and a variable number of data words including a word count. The blocks are transmitted between each channel and all of the channels over cross-channel data links, each channel receiving the data blocks and determining the validity thereof by counting the number of data words received and comparing that number to the word count transmitted for that block. An interrupt signal indicative of invalidity of a block is provided in the event of a miscompare. A stop address is generated for each block received for storage at the start address. A memory address is generated for each valid word received for storage in sequence starting immediately after the start address. The next block received has its start address placed immediately at the end of the previously received block.

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