Portable telephone with a battery alarm function indicating...

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C455S343500, C340S007370

Reexamination Certificate

active

06898446

ABSTRACT:
A portable telephone apparatus including a battery alarm function wherein consumption of a battery apparatus through use of an additional function other than a talking function can be prevented to assure a lowest operation voltage for the talking function. The portable telephone apparatus includes a rechargeable battery, and a battery supervision section. The battery supervision section includes a voltage detection section for supervising and detecting a voltage of the battery controlled by a control section, and an alarming section for issuing a lowest operation voltage level alarm under the control of the control section when the detected voltage drops to a lowest operation voltage level that a talking function of the portable telephone apparatus can operate. The alarming section issues a supervision voltage level alarm when the detected voltage of the battery drops to a supervision voltage level different from the lowest operation voltage level.

REFERENCES:
patent: 5304986 (1994-04-01), Motegi
patent: 5870685 (1999-02-01), Flynn
patent: RE36712 (2000-05-01), Sato et al.
patent: 6141570 (2000-10-01), O'Neill et al.
patent: 6427072 (2002-07-01), Reichelt
patent: 6501968 (2002-12-01), Ichimura
patent: 1 096 264 (2001-05-01), None
patent: 2278922 (1994-12-01), None
patent: 2326545 (1998-12-01), None
patent: 4-265866 (1992-09-01), None
patent: 7-131402 (1995-05-01), None
patent: 11-174093 (1999-07-01), None
patent: 11-205422 (1999-07-01), None
patent: 11-341120 (1999-12-01), None
patent: 2000-59473 (2000-02-01), None
European Examination report dated Jul. 17, 2003.
Japanese Office Action issued Sep. 2, 2003 (w/ English translation of relevant portion).

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