发明名称 Method and system for controlling a maximum signal level output to headphones coupled to a wireless device
摘要 <p>A method for controlling a maximum signal level output to headphones of a wireless device is provided. The method includes: determining an impedance of the headphones; determining a carrier specific maximum signal level for headphones having the impedance; and, adjusting an audio amplifier of the wireless device coupled to the headphones to restrict the maximum signal level output to the headphones to the carrier specific maximum signal level.</p>
申请公布号 EP2453672(A1) 申请公布日期 2012.05.16
申请号 EP20110195765 申请日期 2009.02.27
申请人 RESEARCH IN MOTION LIMITED 发明人 MARTIN, CYRIL
分类号 H04R5/04;H04R1/10;H04R5/033;H04R29/00 主分类号 H04R5/04
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