Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
140 words
Radio telephone apparatus (1) comprising: a plurality of radio modules (MOD1 to MODi), each of said radio modules (MOD1 to MODi) being adapted to access a respective one of a plurality of radio telephone networks (N1 to Ni); monitoring means (2) for monitoring communication quality between said apparatus (1) and each of the plurality of radio telephone networks (N1 to Ni); selection means (3) for selecting one of the plurality of radio modules (MOD1 to MODi) according to an output from said monitoring means (2); storage means (4) for storing a telephone number of another radio telephone apparatus with which said apparatus (1) is in communication; and means (5) for calling a telephone number stored in said storage means (4) by means of one of said plurality of radio modules (MOD1 to MODi) as selected by said selection means (3).
Claim 2
Dependent Claim
33 words
Apparatus according to Claim 1, comprising further selection means (11) for selecting an available network among the plurality of radio telephone networks (N1 to Ni) according to a priority preset by a user.
Claim 3
Dependent Claim
21 words
Apparatus according to Claim 2, further comprising a display means for indicating a network selected by said further selection means (11).
Claim 4
Dependent Claim
36 words
Apparatus according to any preceding claim, wherein said monitoring means (2) monitors said communication quality by means of an amplitude of a signal received from each of the plurality of radio telephone networks (N1 to Ni).
Claim 5
Dependent Claim
37 words
Apparatus according to any of Claims 1 to 3, wherein said monitoring means (2) monitors said communication quality by means of a carrier strength of said each of the plurality of radio telephone networks (N1 to Ni).
Claim 6
Dependent Claim
37 words
Apparatus according to any of Claims 1 to 3, wherein said monitoring means (2) monitors said communication quality by counting bit errors of signals received from each of the plurality of radio telephone networks (N1 to Ni).
Claim 7
Dependent Claim
37 words
Apparatus according to any of Claims 1 to 3, wherein said monitoring means (2) monitors said communication quality by counting frame errors of signals received from each of the plurality of radio telephone networks (N1 to Ni).
Claim 8
Dependent Claim
37 words
Apparatus according to any of Claims 1 to 3, wherein said monitoring means (2) monitors said communication quality by counting symbol errors of signals received from each of the plurality of radio telephone networks (N1 to Ni).
Claim 9
Dependent Claim
34 words
Apparatus according to any of Claims 1 to 3, wherein said monitoring means (2) is adapted to detect degradation of said communication quality by referring to results monitored over a certain period of communication.
Claim 10
Dependent Claim
10 words
Apparatus according to any preceding claim, being a portable hand-phone.
Claim 11
Dependent Claim
21 words
A radio telephone system comprising a plurality of radio telephone networks (N1 to Ni) and apparatus according to any preceding claim.
Claim 12
Dependent Claim
65 words
A radio telephone system according to Claim 11, wherein at least one of the plurality of radio telephone networks (N1 to Ni) comprises: means (7) for detecting interruption of communication performed through said at least one of the plurality of radio telephone networks (N1 to Ni); and means (8) for announcing the reopening of a communication to the user of said another radio telephone apparatus.
Claim 13
Dependent Claim
54 words
A radio telephone system according to Claim 11 or 12, wherein when said apparatus is called by another radio telephone apparatus, the telephone number of said another radio telephone apparatus is transmitted from one of the plurality of radio telephone networks (N1 to Ni) and stored in the storage means (4) of said apparatus.