Multi-mode radio telephone which executes handover between different system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 7, 1998
Grant Date -
N/A
app pub date -
Oct 16, 1995
filing date -
Dec 23, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A radio telephone automatically hands over a call from one radio telephone system to another radio telephone system. Communication with respective radio telephone systems may be simultaneously continued during handover until the handover is complete, or communication with one radio telephone system ceases before communication with the other radio telephone system commences. Delays between signals of different radio telephone systems which would cause audible interference are inhibited by FIR filtering and/or dynamic time-warping. If an handover fails then communication with the original radio telephone system is restarted or continued.
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Family
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Cited Art Landscape
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