发明名称 |
Keypad scanning with radio event isolation |
摘要 |
Apparatus and methods for scanning a keypad of a communications device in a manner that tends to minimize interference with transceiver operation, such as a RF transceiver. In one embodiment, a controller receives a periodic signal of the communications device and provides a scan signal to cause the keypad to be scanned. In a sleep mode a keypad scan is performed only subsequent to a keypad activation. However, if the communications device is in use a keypad scan is performed once per frame at predetermined intervals, in one embodiment.
|
申请公布号 |
US2005285449(A1) |
申请公布日期 |
2005.12.29 |
申请号 |
US20040880239 |
申请日期 |
2004.06.29 |
申请人 |
RUSH FREDERICK A;CIMAZ LIONEL M;QUDDUS WASIM |
发明人 |
RUSH FREDERICK A.;CIMAZ LIONEL M.;QUDDUS WASIM |
分类号 |
G06F1/16;G06F3/02;H04B1/40;H04B15/02;H04M11/00;(IPC1-7):H04M11/00 |
主分类号 |
G06F1/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|