Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-05-02
2006-05-02
Deane, Jr., William J. (Department: 2642)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S450000, C455S512000
Reexamination Certificate
active
07039414
ABSTRACT:
An apparatus and associated method are provided, wherein, using an external-signal detection apparatus for detecting external signals of the available channels of a jointly used transmission-medium and a priority-apparatus for detecting at least one separate transmission-medium use priority, and with a data communication interface controlling data transmission on the basis of the detected external signals in the at least one detected transmission-medium use priority, both identical and different independent communication systems are allowed to coexist in a simple and inexpensive manner.
REFERENCES:
patent: 5483666 (1996-01-01), Ohmori et al.
patent: 5884145 (1999-03-01), Haartsen
patent: 5903848 (1999-05-01), Takahashi
patent: 6892068 (2005-05-01), Karabinis et al.
patent: 0 629 097 (1994-12-01), None
patent: 0 687 117 (1995-12-01), None
Bell Boyd & Lloyd LLC
Deane, Jr. William J.
Siemens Aktiengesellschaft
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