Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2006-10-03
2006-10-03
Nguyen, Tony T. (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S158400, C455S159100, C455S574000, C345S211000, C349S061000
Reexamination Certificate
active
07117019
ABSTRACT:
This invention is a portable electronic device (100) including a display (212), an input device (210), a lighting circuit (204), a light sensor (206) and a control circuit (208). The lighting circuit (204) includes a light source (214) to illuminate the display (212) and the input device (210). The light sensor (206) determines the ambient lighting conditions about the display (212) and/or the input device (210) and generates an ambient lighting signal based on the ambient lighting conditions. The control circuit (208) is coupled to the lighting circuit (204) and the light sensor (206) and has a delayed operation mode in which a first activation of the input device (210) illuminates the display (212) without performing any other operation of the device (100) and a second activation of the input device performs an operation of the device other than illuminating the display. The control circuit (208) of the portable electronic device (100) may receive a reverse bias signal generated by the lighting circuit (204) when incident with ambient lighting about the user interface (202) to supplement or eliminate the light sensor (206).
REFERENCES:
patent: 4349705 (1982-09-01), Kuhfus
patent: 4374308 (1983-02-01), Holesha
patent: 5247700 (1993-09-01), Wohl et al.
patent: 5315695 (1994-05-01), Saito et al.
patent: 5384577 (1995-01-01), McLaughlin et al.
patent: 5406305 (1995-04-01), Shimomura et al.
patent: 5548832 (1996-08-01), Karam
patent: 5760760 (1998-06-01), Helms
patent: 5854617 (1998-12-01), Lee et al.
patent: 5926119 (1999-07-01), Lindeman et al.
patent: 5952992 (1999-09-01), Helms
patent: 5970419 (1999-10-01), Terashima et al.
patent: 6011961 (2000-01-01), Kaschke
patent: 6073034 (2000-06-01), Jacobsen et al.
patent: 6151008 (2000-11-01), Zhang
patent: 6278887 (2001-08-01), Son et al.
patent: 6687515 (2004-02-01), Kosaka
patent: 6690351 (2004-02-01), Wong
patent: 2001/0024967 (2001-09-01), Bauer
patent: 2001/0027123 (2001-10-01), Ishigaki
patent: 2003/0065370 (2003-04-01), Lebel et al.
patent: 2004/0192411 (2004-09-01), Shim
Motorola Inc.
Nguyen Tony T.
Watanabe Hisashi D.
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