Telecommunications – Transmitter and receiver at same station – With a common signal processing stage
Patent
1995-05-22
1997-03-18
Pham, Chi H.
Telecommunications
Transmitter and receiver at same station
With a common signal processing stage
455 121, 455 90, 455 541, 361814, H04B 103, H04B 108
Patent
active
056132239
ABSTRACT:
A bracing system protects and secures the internal components of a mobile communication system. The bracing system includes an upper housing comprised of a shock resistant material. The upper housing includes a monitor cavity, elevated portions surrounding the monitor cavity and formed in the upper housing, and elastomer sections disposed on the elevated portions. In addition, the upper housing includes a breakage resistant transparent material placed on the elastomer sections and in conformity with the monitor cavity, a display monitor being protected by the breakage resistant material, and a shock absorbing material disposed around the peripheries of the breakage resistant transparent material and the display monitor. The shock absorbing material is mounted to at least one of the breakage resistant transparent material and the display monitor. The upper housing also includes a mounting bracket biasing the display monitor to the upper housing and the breakage resistant material, and mounted to the upper housing, an integral keyboard formed of a water resistant material including elevated keys and mounting holes arranged around the periphery and between selected keys, and a first printed circuit board including switches selectively activated in response to depression of the elevated keys and mounted to the upper housing through the mounting holes in the integral keyboard. The bracing system also includes a lower housing comprised of another shock resistant material. The lower housing includes a second printed circuit board including a central processing unit, and mounted to the lower housing, and a support mounted to the lower housing and extending in a direction toward the upper housing and through the second printed circuit board.
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Isaacs Blake L.
Ross David J.
Williams Kevin J.
AMSC Subsidiary Corporation
Pham Chi H.
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