Apparatus for storing digital data

Details Apparatus for storing digital data Apparatus for storing digital data

1987-12-23

1989-10-10

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Redundant or complimentary tracks

G11B 509

Patent

active

048735884

ABSTRACT:
An apparatus for storing digital data which is applied to a PCM audio tape recorder incorporates a data input circuit to receive data blocks each having block address data identifying the block, main data, and redundancy data forming an error detection/correction code together with data including block address data for detecting the presence/absence of errors in the block address data; an error detector to detect the presence/absence of errors in the block address data by use of the redundancy data and to produce an error detection signal when any error is detected; a first write address generator to generate first write address data; a first RAM to store the main data among the data block address to the first write address data; a second write address generator to generate second write address data; a second RAM to store the first write address data from the first write address generator according to the second write address data when the address data is determined to have no error by the error detector; a second read address generator to generate second read address data, whereby the first write address data in the second RAM is read out according to the second read address data; and a first read address generator to generate first read address data according to the first write address data read out from the second RAM, whereby the main data in the first RAM is read out according to the first read address data.

REFERENCES:
patent: 4398224 (1983-08-01), Watanabe

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