Mobile telephone system
First Claim
1. In a mobile telephone system which is intended to be used in a motor vehicle, said telephone system having a handset for making and receiving telephone calls, said handset having a transmitter portion and a receiver portion, the improvement comprised of:
- a first releasable non-invasive interface mounted on said handset for operatively coupling incoming and outgoing telephone calls from said handset to a signal conditioning module, said releasable non-invasive interface having an electrical output which varies in frequency in accordance with the audio frequency of incoming and outgoing telephone calls;
a signal conditioning module for receiving, amplifying and filtering said output of said first releasable non-invasive interface;
a second non-invasive releasable interface for operatively coupling an output of said signal conditioning module to an audio cassette tape player of a vehicle entertainment system; and
a vehicle entertainment system for receiving, amplifying and broadcasting said output of said signal conditioning module.
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Accused Products
Abstract
A mobile telephone system for aiding impaired hearing persons and others in overcoming the undesirable effects on incoming calls of ambient noises, such as engine, wind, road and traffic noises. The telephone system comprises a signal conditioning module for reducing feedback and amplifying signals received from a telephone handset, a vehicle entertainment system for amplifying and broadcasting incoming telephone calls and a pair of releasable interfaces. One of the interfaces releasably couples the signal conditioning module to a receiver portion of the handset. The second interface releasably couples an output of the signal conditioning module to a tape player of the vehicle entertainment system. In a second aspect of the telephone system, the signal conditioning module is releasably coupled to the vehicle entertainment system by a low power transmitter which is in series with the output of the signal conditioning module and an RF stage of a radio of the vehicle entertainment system. In a third aspect of the invention, the signal conditioning module is coupled to the vehicle entertainment system by a low power transmitter and a shielded cable having one end portion releasably connected to the signal conditioning module and an opposite end portion connected to an antenna socket of a radio of the vehicle entertainment system.
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Citations
15 Claims
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1. In a mobile telephone system which is intended to be used in a motor vehicle, said telephone system having a handset for making and receiving telephone calls, said handset having a transmitter portion and a receiver portion, the improvement comprised of:
- a first releasable non-invasive interface mounted on said handset for operatively coupling incoming and outgoing telephone calls from said handset to a signal conditioning module, said releasable non-invasive interface having an electrical output which varies in frequency in accordance with the audio frequency of incoming and outgoing telephone calls;
a signal conditioning module for receiving, amplifying and filtering said output of said first releasable non-invasive interface;
a second non-invasive releasable interface for operatively coupling an output of said signal conditioning module to an audio cassette tape player of a vehicle entertainment system; and
a vehicle entertainment system for receiving, amplifying and broadcasting said output of said signal conditioning module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a first releasable non-invasive interface mounted on said handset for operatively coupling incoming and outgoing telephone calls from said handset to a signal conditioning module, said releasable non-invasive interface having an electrical output which varies in frequency in accordance with the audio frequency of incoming and outgoing telephone calls;
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11. In a mobile telephone system which is intended to be used in a motor vehicle for making and receiving telephone calls, said telephone system having a handset, said handset having a transmitter portion and a receiver portion, the improvement comprised of:
- a vehicle entertainment system;
a first releasable non-invasive interface mounted on said handset for operatively coupling incoming and outgoing telephone calls from said handset to a signal conditioning module, said signal conditioning module having a means for eliminating a high pitch squeal caused by an objectionable feedback and a means for preventing the sound level of DTFM dialing to be objectionably high; and
a second releasable non-invasive interface for operatively coupling an output of said signal conditioning module to said vehicle entertainment system.
- a vehicle entertainment system;
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12. In a mobile telephone system which is intended to be used in a motor vehicle in combination with a vehicle entertainment system for making and receiving telephone calls, said telephone system having a handset, said handset having a transmitter portion and a receiver portion, the improvement comprised of:
- a vehicle entertainment system;
a first releasable non-invasive means mounted on said handset for operatively coupling incoming and outgoing telephone calls from said handset to a signal conditioning module;
a signal conditioning module for eliminating a high pitch squeal caused by an objectionable feedback from said vehicle entertainment system and a means for preventing the sound level of DTFM dialing to be objectionably high; and
a second releasable non-invasive means for operatively coupling an output of said signal conditioning module to said vehicle entertainment system.
- a vehicle entertainment system;
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13. In a mobile telephone system which is intended to be used in combination with a vehicle entertainment system in a motor vehicle for making and receiving telephone calls, said telephone system having a handset, said handset having a transmitter portion and a receiver portion, the improvement comprised of:
- a first releasable non-invasive interface mounted on said handset for operatively coupling incoming and outgoing telephone calls from said handset to a signal conditioning module;
a signal conditioning module for receiving electrical signals from said first releasable interface which vary in accordance with an audio frequency of incoming telephone calls, said signal conditioning module having an audio amplifier and a filter network for filtering out signals from said signals which are received from said first interface having a frequency above approximately 3000 Hz to 4000 Hz and for preventing the sound level of DTFM dialing to be obiectionably high;
a second releasable non-invasive interface for releasably coupling an output of said signal conditioning module to a vehicle entertainment system; and
a vehicle entertainment system for amplifying and broadcasting said output of said signal conditioning module. - View Dependent Claims (14, 15)
- a first releasable non-invasive interface mounted on said handset for operatively coupling incoming and outgoing telephone calls from said handset to a signal conditioning module;
Specification