Telecommunications – Transmitter and receiver at same station – With a common signal processing stage
Patent
1990-06-01
1993-03-09
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at same station
With a common signal processing stage
455 90, 455271, 455343, 455347, 429 1, 429 98, 307127, 320 2, 361 84, 343702, H04B 138, H01M 210
Patent
active
051932202
ABSTRACT:
A battery pack mounting device for portable radio equipment having a built-in antenna. The device determines a position of a battery pack, which powers the equipment, inserted in a battery pack accommodating portion provided in the equipment. Various constants which determine the antenna characteristic of the equipment are controlled on the basis of the determined position of the battery pack, thereby maintaining the optimum antenna characteristic at all times. When the device is applied to a charging unit which charges a rechargeable battery, the opposite electrodes of the battery are electrically correctly connected to a pair of connecting terminals which are provided in the charging unit and connected to opposite poles of a charging circuit as the battery pack is inserted in a battery chamber defined in the charging unit. Even when the battery pack is placed in the battery chamber upside down, the opposite electrodes of the battery are accurately connected to the connecting terminals of the charging unit.
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Ichinohe Makoto
Matai Masahiro
Nishikawa Seiji
Umetsu Shinjiro
Eisenzopf Reinhard J.
Keough Timothy H.
NEC Corporation
Nippon Telegraph and Telephone Corporation
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