Optical reproduction system having function of rationally changi

Details Optical reproduction system having function of rationally changi Optical reproduction system having function of rationally changi

1996-01-26

1998-11-24

Lee, Thomas C.

Excavating

371 3705, 369 47, H03M 1300, G11B 509

Patent

active

058417931

ABSTRACT:
In a system for converting multimedia information to an optically readable code, printing/recording the code on an information recording medium, and reading the code to restore it to the original multimedia information, a read unit optically reads the code. A decoding unit demodulates the code read by the read unit and outputs demodulated data. A reproduction unit performs processing associated with error correction in units of partial data chunks each consisting, as a unit of an aggregate of a predetermined amount of demodulated data output from the decoding unit. An output unit acquires a predetermined number of partial data chunks output from the reproduction unit to form final output data and outputs the data as the recognizable original multimedia information. An error partial data chunk detection units detects an omitted portion or a portion for which error correction by the reproduction unit has failed as an error partial data chunk in units of partial data chunks output from the output unit. A data change unit recognizes the error partial data chunk detected by the error partial data chunk detection unit and changes data of a portion corresponding to the error partial data chunk.

REFERENCES:
patent: 5457673 (1995-10-01), Nakamura et al.
patent: 5465244 (1995-11-01), Kobayashi et al.
patent: 5592450 (1997-01-01), Yonemitsu et al.
patent: 5596565 (1997-01-01), Yonemitsu et al.

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