Cordless telephone set having a warning signal representing that a storage battery is not being charged
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 26, 1995
Grant Date -
N/A
app pub date -
Mar 14, 1994
filing date -
Mar 15, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
When the contacts are electrically disconnected under a condition where a handset is set in a concave of a charging stand, the output of a connection condition detecting circuit is of low level. Then, an inverted output thereof, that is, a high-level output is provided through an inverter to one input terminal of an AND circuit, and a switch is closed by the weight of the handset, so that a high-level output is provided also to the other input terminal of the AND circuit. Then, a logical product output of the AND circuit is of high level. As a result, a warning buzzer generates a warning sound to attract the user's attention.
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Family
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Cited Art Landscape
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