Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1996-09-30
1999-06-29
Wolfe, Willis R.
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455 90, 379433, H04M 102, H04B 138
Patent
active
059181885
ABSTRACT:
A sensor unit for an electronic device having a pivotable cover member includes a signal emitter, a signal receiver spaced from the signal emitter, and a baffle attached to the cover member and disposed in the space between the signal emitter and the signal receiver when the cover is in its closed position. A transmit window disposed between the signal emitter and the signal receiver is permeable to signals falling within a specified wavelength range, thereby ensuring the accuracy of the signal. When the sensor unit is applied to a cellular phone, for example, the phone can be automatically in an "off hook" or "on hook" condition automatically in accordance with whether the cover member is in its open position or closed position, and an operator need only perform a single operation to answer or terminate a call or to power up the phone.
REFERENCES:
patent: 5216246 (1993-06-01), Weldman et al.
patent: 5327584 (1994-07-01), Adachi et al.
patent: 5542105 (1996-07-01), Finch et al.
patent: 5668867 (1997-09-01), Nagai
patent: 5706332 (1998-01-01), Nagai
Patent Abstracts of Japan, vol. 012, No. 094 (E-593), Mar. 26, 1988 & JP 62 226748 A (NEC Corp), Oct. 5, 1987, see Abstract.
Ericsson Inc.
Wolfe Willis R.
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