| 摘要 |
Wireless communications devices using a given speaker for both handset and speakerphone operation are equipped with a mechanical spacer that automatically inhibits the user from placing the speaker in close proximity to the user's ear when the wireless communications device is in speakerphone mode. The spacer is moved from a normal position to a blocking position to switch the device from handset to speakerphone mode. The mechanical spacer may take a variety of forms, such as an articulating antenna, a moveable frame, a moveable speaker flap, and the like. The extra space between the speaker and the user's ear mandated by the presence of the spacer allows the sound generated by the speaker in speakerphone mode to dissipate somewhat before reaching the user's ear, even when the speaker is held as close as possible, thereby automatically providing hearing protection when the wireless communications device is configured for speakerphone operation. In addition, when wireless communications devices incorporating the present invention are in handset mode, the audio level from the speaker is attenuated before reaching the user's ear. This attenuation may come from electronic means, such as by using a lower amount of amplification, or from mechanical means, such as by blocking or otherwise diminishing the sound generated by the speaker, or both. Thus, a wireless communications device incorporating the present invention automatically provides hearing protection during both handset and speakerphone modes of operation.
|
