Dual mode satellite cellular telephone systems
First Claim
1. In a dual-mode satellite/cellular telephone system including a cellular telephone, a satellite-cellular communications adapter, separate from said cellular-telephone, said communications adapter comprising:
- a converter for converting satellite signals received from an orbiting satellite into information signals for use by said cellular telephone and for converting-information signals received from said cellular telephone into satellite signals for transmission to the orbiting satellite; and
an interface for connecting said communications adapter to said cellular telephone and for communicating information signals between said adapter and said cellular telephone,wherein information signals communicated via said interface said cellular telephone to said adapter include balanced in-phase and quadrature drive signals, and wherein information signals communicated from said adapter to said cellular telephone include an intermediate frequency signal.
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Accused Products
Abstract
A dual-mode telephone with a satellite communication adapter is disclosed. According to one embodiment of the present invention, a cellular-type handportable phone is equipped with a connector for the attachment of accessories. This connector provide a satellite communications adapter accessory access to the handset'"'"'s signal processing resources which may operate in an alternative mode to process signals received from the satellite and converted by the adapter into a suitable form for processing. The processing translates the satellite signals into voice or data, and vice-versa.
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Citations
7 Claims
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1. In a dual-mode satellite/cellular telephone system including a cellular telephone, a satellite-cellular communications adapter, separate from said cellular-telephone, said communications adapter comprising:
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a converter for converting satellite signals received from an orbiting satellite into information signals for use by said cellular telephone and for converting-information signals received from said cellular telephone into satellite signals for transmission to the orbiting satellite; and an interface for connecting said communications adapter to said cellular telephone and for communicating information signals between said adapter and said cellular telephone, wherein information signals communicated via said interface said cellular telephone to said adapter include balanced in-phase and quadrature drive signals, and wherein information signals communicated from said adapter to said cellular telephone include an intermediate frequency signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification