System for interfacing a communication device with a radio for hands-free operation
First Claim
1. An interface connectable to a stand-alone external communication source for interfacing the source to a radio including a radio receiver and radio speaker, comprising:
- a converter which converts incoming audio signals from the external communication source to radio frequency signals;
a transmitter which transmits the radio frequency signals to the radio receiver, wherein the audio signals are reproduced over the radio speaker; and
an interface speaker which reproduces a signal generated by the external communication source when the source receives an incoming signal,wherein the interface is remote from the communication source and the communication source is capable of operating independently of the interface.
1 Assignment
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Accused Products
Abstract
An interface between a portable cellular phone and an automobile radio to allow hands-free operation of the phone is housed in a remote housing connected to a battery eliminator cigarette lighter adapter plug for simple installation into an automobile. The interface converts incoming signals from the cellular phone from audio frequency to radio frequency and transmits the signals to the existing automobile radio receiver, wherein the signals are reproduced over the radio speakers. The interface may also be used with a power conversion system to increase the power of the phone transmissions. Further, the interface may be used with any external communication source, such as a facsimile machine or laptop computer and modem. The interface is also easily adapted for use with any stand-alone audio producing devices, such as a cassette deck or compact disc player.
184 Citations
35 Claims
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1. An interface connectable to a stand-alone external communication source for interfacing the source to a radio including a radio receiver and radio speaker, comprising:
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a converter which converts incoming audio signals from the external communication source to radio frequency signals; a transmitter which transmits the radio frequency signals to the radio receiver, wherein the audio signals are reproduced over the radio speaker; and an interface speaker which reproduces a signal generated by the external communication source when the source receives an incoming signal, wherein the interface is remote from the communication source and the communication source is capable of operating independently of the interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An interface connectable between a portable cellular phone and a fixed cellular phone for interfacing the fixed phone to a radio including a radio receiver and a radio speaker, comprising:
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a transceiver which receives phone operation signals from the portable phone and transmits the signals to the fixed phone; a converter which converts incoming audio signals from the fixed phone to radio frequency signals; a transmitter which transmits the radio frequency signals to the radio receiver, wherein the audio signals are reproduced over the radio speaker; and an interface speaker which reproduces a signal generated by the fixed phone when an incoming signal is received from the external communications cell. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. A system for interfacing a portable cellular phone to a radio including a radio receiver and a radio speaker, comprising:
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a power converter which converts a signal between power levels; and an interface connectable to the cellular phone, wherein the interface includes a transceiver which communicates with the cellular phone and the power converter, a converter which converts an incoming audio signal received from the phone to a radio frequency signal, a transmitter which transmits the radio frequency signal to the radio receiver, wherein the audio signal is reproduced over the radio speaker, and an interface speaker which reproduces a signal generated by the cellular phone when the phone receives an incoming signal. - View Dependent Claims (32, 33, 34, 35)
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Specification