Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2006-07-18
2006-07-18
Tran, CongVan (Department: 2688)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S403000
Reexamination Certificate
active
07079862
ABSTRACT:
A switch operated re-positioning reminder for a cellular phone is equipped with a time counter which can actuate an alarm device after a preset time is counted down. The magnet operated reed-in-tube switch is made up of a pair of partially overlapped but separated reeds in a tube, or other types of switch. The time counter is a simple CPU contained program and a user can set up the prolonged time span as desired for the time counter. The alarm is a buzz, ring or speaker that can produce alarm sound. In a first embodiment, a PC board including the magnet operated reed-in-tube switch, the CPU, the buzzer and a battery can be housed in a rather thin shelter case wherein a magnet is attached to a cellular phone or other precious articles and the shelter box is fixed to the interior of a cellular phone case. In other embodiment, the magnet is fixed to a proper position of a cellular phone case, and the time counter program is merged with a conventional cellular phone circuit and the original ring system for the cellular phone is adopted as an alarm whereby as long as a cellular phone in either case is not repositioned in a cellular phone case in a preset time, the alarm device in either the shelter box or the cellular phone will be actuated to alarm so as to remind a user not to leave his or her cellular phone behind.
REFERENCES:
patent: 4481382 (1984-11-01), Villa-Real
patent: 4922529 (1990-05-01), Kiel
patent: 5317626 (1994-05-01), Jaynes et al.
patent: 5987119 (1999-11-01), Lee
patent: 6262657 (2001-07-01), Okuda et al.
patent: 6674358 (2004-01-01), Tinsley
patent: 6850601 (2005-02-01), Jones et al.
Special Telecommunications Co., Ltd.
Tran CongVan
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