Signal recording/reproducing apparatus with improved power...

Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Initialization or start-up mode or changing system mode

Reexamination Certificate

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Reexamination Certificate

active

10755284

ABSTRACT:
A signal recording/reproducing apparatus includes a first power source unit which generates necessary electric power signals from a commercial power source, a second power source unit which generates a necessary electric power signal from a battery, a recording signal processing unit, and a reproduced signal processing unit. The apparatus further includes time measuring instrument which is supplied with the electric power from the second power source unit, and a charging unit which charges the battery with the electric charges. Whenever the time measuring instrument measures a predetermined time, the generation of the electric power signals from the first power source unit is started, and the battery is charged with the electric charges by the charging unit.

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patent: 5449238 (1995-09-01), Pham et al.
patent: 5602805 (1997-02-01), Chigita
patent: 1954659 (1997-06-01), None
patent: 4-44941 (1992-04-01), None
patent: 4-162102 (1992-06-01), None
patent: 8-36870 (1996-02-01), None
patent: 8-83450 (1996-03-01), None
patent: 9-320142 (1997-12-01), None

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