Data receiving apparatus

Details Data receiving apparatus Data receiving apparatus

1979-05-04

1981-07-07

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Data refresh

3072381, G11C 1300

Patent

active

042778387

ABSTRACT:
Data receiving apparatus for receiving repetitively transmitted blocks of data stores a block of data (register 10), and compares (comparator 12) each received byte in DI with the corresponding stored byte in D(n). If the bytes match (M) a data selector 15 selects either byte for storage and sets a flag bit for that byte in a register 14 to 1. If the bytes do not match, the data selector selects the new byte when the existing flag bit is 0 and selects the old, stored byte when the existing flag bit is 1, in either event setting the flag bit to 0. In this way the probability is that each stored byte is an error free byte. A status circuit 16 signals when all flag bits are not 1 to indicate that suspicion nevertheless attaches to the block as stored.

REFERENCES:
patent: 3713114 (1973-01-01), Linton et al.
patent: 3737879 (1973-06-01), Greene et al.

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