Portable digital communication device

Details Portable digital communication device Portable digital communication device

2007-10-16

2007-10-16

Feild, Joseph (Department: 2617)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S090300, C455S575100, C455S550100

Reexamination Certificate

active

10646918

ABSTRACT:
A portable digital communication device, in which it is convenient to manipulate keys using fingers of both hands while chatting or playing a game. The device comprises a main housing provided with a display unit on a top surface thereof, a first key pad being capable of sliding on the top surface of the main housing in one direction relative to the display unit so as to open and close one side of the display unit, and a second key pad being capable of sliding on the top surface of the main housing in the other direction relative to the display unit so as to open and close the other side of the display unit and being capable of sliding toward or away from the first key pad.

REFERENCES:
patent: 6397078 (2002-05-01), Kim
patent: 6748249 (2004-06-01), Eromaki et al.
patent: 6850226 (2005-02-01), Finke-Anlauff
patent: 2001/0027121 (2001-10-01), Boesen
patent: 2002/0065102 (2002-05-01), Miyake et al.
patent: 2002/0137476 (2002-09-01), Shin
patent: 2003/0003878 (2003-01-01), Bestle
patent: 2003/0103041 (2003-06-01), Nguyen et al.
patent: 2003/0143961 (2003-07-01), Humphreys et al.

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