Wireless portable telephone having antenna retraction detection

Details Wireless portable telephone having antenna retraction detection Wireless portable telephone having antenna retraction detection

1995-02-03

1998-01-20

Urban, Edward F.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

4552264, H04B 138

Patent

active

057109850

ABSTRACT:
Upon the reception of a page message from a base station (step S1-1), a wireless portable telephone transmits to the exterior a page response which is a response to the page message (step S1-2). If, when transmitting the page response, a data transmission error has been detected (step S1-3), then a predetermined warning tone is generated (step S1-4). Thus, by virtue of this warning tone, the user of the wireless portable telephone can draw out an antenna or move to a place in which the electric field is in a good condition.

REFERENCES:
patent: 4415770 (1983-11-01), Kai et al.
patent: 4506266 (1985-03-01), Mizuno et al.
patent: 5193216 (1993-03-01), Davis
patent: 5321738 (1994-06-01), Ha
patent: 5396651 (1995-03-01), Nitardy
Mitsubishi International Corp., Model 4000 Portable Cellular Telephone (Owner's Manual), pp. cover, index, 8-9 & 56-57.

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