Accessory for a portable electronic device

Details Accessory for a portable electronic device Accessory for a portable electronic device

2011-03-29

2011-03-29

Nguyen, Tuan H (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S550100, C455S556100

Reexamination Certificate

active

07917172

ABSTRACT:
The invention relates to an accessory (18) for connection to an electrical interface (16) of a portable electronic device (10), which interface comprises a pair of bias voltage providing connection points including a first connection point (42) and a second connection point (44) for biasing a signal providing element (22) that may be provided in the accessory. The accessory includes a first electrical branch comprising a first voltage dividing element (R1) and a first switch (32) that can be actuated mechanically. The branch has a first end to be connected to one connection point (42) in the pair and a second end to be connected to another connection point (46) for changing the voltage level of the connection point connected to the first end to a certain voltage level when the first switch interconnects the first voltage dividing element and this connection point.

REFERENCES:
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patent: 2003/0083114 (2003-05-01), Lavin et al.
patent: 2003/0095525 (2003-05-01), Lavin et al.
patent: 2006/0035668 (2006-02-01), Li et al.
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patent: 2002-027045 (2002-01-01), None
patent: 2004-046914 (2004-02-01), None
patent: 02/39703 (2002-05-01), None
patent: WO 02/39703 (2002-05-01), None
PCT Search Report and Written Opinion, Dec. 27, 2006, 11 pages.

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