发明名称 |
Portable radio telephone having improved speaker and housing assembly for handsfree and private operation |
摘要 |
A portable radio telephone is adapted to provide handsfree operation and adapted to be held against a user's ear to provide private operation. A housing of the portable radio telephone has an ear placement region on a front surface thereof. A speaker is disposed in the housing behind the ear placement region. The ear placement region is adapted to be held against a user's ear to provide private operation creating a first air volume between the user's ear and the ear placement region. In a preferred embodiment, an air path between the first air volume to a second air volume at the back surface of the housing includes at least a first port positioned within the ear placement region, an air cavity within the housing, and at least a second port positioned at a back surface of the housing.
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申请公布号 |
US6064894(A) |
申请公布日期 |
2000.05.16 |
申请号 |
US19980079098 |
申请日期 |
1998.05.14 |
申请人 |
MOTOROLA, INC. |
发明人 |
ZUREK, ROBERT A.;CHARLIER, MICHAEL L.;GITZINGER, THOMAS |
分类号 |
H04M1/02;H04M1/03;H04M1/60;H04R9/02;(IPC1-7):H04Q7/20 |
主分类号 |
H04M1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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