Method and apparatus for seeking target address with error check

Details Method and apparatus for seeking target address with error check Method and apparatus for seeking target address with error check

1987-05-06

1989-01-24

Richardson, Robert L.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 57, 369 59, 369 33, 360 721, G11B 700, G11B 2100

Patent

active

048005495

ABSTRACT:
A method and an apparatus for seeking a target address having an appended error check code are disclosed. According to the invention, when seeking a target address on a record medium on which the recorded data are divided into plural blocks in correlation with an address for each block and an error check code for each address, the error check code to be appended to the address is formed from the target address. The target address and the error check code derived from the target address are compared to the address having the error check code reproduced from the record medium. When the result of such comparison has revealed that the error is within the symbol or bit number that can be corrected by the error check code, the address read from the record medium is determined to be the target address.

REFERENCES:
patent: 4199820 (1980-04-01), Ohtake et al.

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