发明名称 |
PORTABLE AUDIO DEVICE HAVING REDUCED SENSITIVITY TO RF INTERFERENCE AND RELATED METHODS |
摘要 |
A portable audio device having reduced sensitivity to RF interference over a predetermined frequency range from an adjacent mobile wireless communications device may include a portable housing, a battery carried thereby, a recharging power input connected to the battery, a digital signal input, and an audio analog signal output. A digital-to-analog converter (DAC) may be carried by the portable housing and powered by the battery for converting a selected digital audio file from a memory into an analog audio signal. An audio analog amplifier may be connected between the DAC and the audio analog signal output. A first RF filter(s) may be connected to the recharging power input, and a second RF filter(s) may be connected to the audio analog signal output, both for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device.
|
申请公布号 |
CA2532952(A1) |
申请公布日期 |
2006.04.11 |
申请号 |
CA20062532952 |
申请日期 |
2006.01.30 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
MANKARUSE, GEORGE;CORRIGAN, MICHAEL;ZHU, LIZHONG |
分类号 |
H04B15/00;H04B15/02;H04Q7/32;H05K9/00 |
主分类号 |
H04B15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|