Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1994-02-09
1995-09-26
Sugarman, Scott J.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 53, 369 54, 369 47, G11B 700
Patent
active
054539650
ABSTRACT:
According to one aspect of this invention, auxiliary data recorded on a recording medium together with image and/or sound data is reproduced by a plurality of times, and if the auxiliary data reproduced from a predetermined range on the recording medium coincide with each other, it is determined that the auxiliary data reproduced from the predetermined range is true auxiliary data which can be utilized. According to another aspect of the invention, auxiliary data recorded in different areas on a recording medium are repeatedly reproduced, and if the auxiliary data repeatedly reproduced from all areas do not coincide with each other by predetermined times, it is determined whether the auxiliary data repeatedly reproduced from a particular range coincide with each other by predetermined times. If such auxiliary data coincide, it is determined that the auxiliary data reproduced from the particular range is true auxiliary data which can be utilized.
REFERENCES:
patent: 4785442 (1988-11-01), Ohtake et al.
patent: 4916685 (1990-04-01), Endoh et al.
patent: 4926404 (1990-05-01), Kimura et al.
patent: 4969139 (1990-11-01), Azumatani et al.
Canon Kabushiki Kaisha
Edun Muhammad N.
Sugarman Scott J.
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