US5781850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Live voice device for cellular phones particularly operable in combination with radio receiver apparatus in motor vehicles
Assignee: Krateia Srl
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Filing: 1994-03-28
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Granted: 1998-07-14
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Expires: 2014-03-28
Abstract
Abstract Subject-matter of this invention is a live voice device particularly for cellular telephone apparatus for use in motor vehicles equipped with a radio receiver apparatus including a low frequency power amplification section and a loudspeaker system for diffusion of sounds and equipped with a magnetic head to read a magnetically recorded tape, having electronic means adapted to handle the cellular phone low frequency signals for a free-hand and in live voice condition conversation with the telephone apparatus and through said loudspeaker system.
Inventors
- 👤 Giuseppe Ugge'
- 👤 Carmelo Luzzio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:11
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04M; H04M1/00; H04M1/60; H04M1/6033; H04M1/6041; H04M1/6075; H04M1/6083; H04B1/3805; H04M1/6091
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
132 words
A live voice device for use between a portable cellular telephone and a vehicle with a radio receiver and cassette player with accompanying loudspeaker system, the radio receiver and tape player having a magnetic head for reading a magnetically recorded tape, said live voice device comprising: a microphone; an electronic telephone pre-amplifier circuit connected to said microphone; an external connection means for connecting to the cellular telephone and a power supply of the vehicle, said external connection means connected to said electronic telephone pre-amplifier circuit; a voltage amplifier circuit connected to said external connection means; a magnetic transducer connected to said voltage amplifier circuit and magnetically in communication with the magnetic head; and a conversation masking circuit connected to said electronic pre-amplifier circuit, said voltage amplifier circuit, and said external connection means.
Claim 2
Dependent Claim
132 words
A live voice device for use between a portable cellular telephone and a vehicle with a radio receiver and cassette player with accompanying loudspeaker system, the radio receiver and tape player having a magnetic head for reading a magnetically recorded tape, said live voice device comprising: a microphone; an electronic telephone pre-amplifier circuit connected to said microphone; an external connection means for connecting to the cellular telephone and a power supply of the vehicle, said external connection means connected to said electronic telephone pre-amplifier circuit; a voltage amplifier circuit connected to said external connection means; a magnetic transducer connected to said voltage amplifier circuit and magnetically in communication with the magnetic head; and a conversation masking circuit connected to said electronic pre-amplifier circuit, said voltage amplifier circuit, and said external connection means.
Claim 3
Dependent Claim
32 words
A live voice device according to claim 1, wherein said telephone pre-amplifier includes an operational amplifier and a filter with a pass band identical to a pass band of the cellular telephone.
Claim 4
Dependent Claim
60 words
A live voice device according to claim 1, wherein said voltage amplifier circuit includes; a NPN transistor, an operational amplifier connected to a base of said NPN transistor, at least one coil connected to said operational amplifier, and at least one filter connected to said at least one coil for compensating a frequency response of said at least one coil.
Claim 5
Dependent Claim
60 words
A live voice device according to claim 1, wherein said external connection means includes an infra-red transmitter connected to the cellular telephone, an infra-red receiver mounted on a front panel of the radio receiver, and an adaptor connected to an electric lighter socket of the vehicle housing said microphone and supplying power to the cellular telephone and the infra-red transmitter.
Claim 6
Dependent Claim
60 words
A live voice device according to claim 1, wherein said external connection means includes a radio mini-transmitter connected to the cellular telephone, a radio mini-receiver mounted on a front panel of the radio receiver, and an adaptor connected to an electric lighter socket of the vehicle housing said microphone and supplying power to the cellular telephone and the radio mini-transmitter.
Claim 7
Dependent Claim
34 words
A live voice device according to claim 1, further comprising means for automatically switching-over a preset transmission frequency in the radio receiver to avoid interference with a received radio frequency should the interference occur.
Claim 8
Dependent Claim
49 words
A live voice device according to claim 1, wherein said magnetic transducer communicates with the reading head through the creation of a magnetic field corresponding to an electrical signal originating with the cellular telephone such that a distance between said magnetic transducer and the reading head permits this communication.
Claim 9
Dependent Claim
54 words
A live voice device according to claim 1, further comprising a dummy cassette to house said microphone, said magnetic transducer, said electronic telephone pre-amplifier circuit, and said voltage amplifier circuit; whereby, said dummy cassette having a shape of a conventional cassette to be able to be inserted into the tape player of the vehicle.
Claim 10
Dependent Claim
37 words
A live voice device according to claim 8, wherein said dummy cassette without magnetic tape is connected to said external connection means and distributes the received power and telephone signal to respective elements on said dummy cassette.
Claim 11
Dependent Claim
59 words
A live voice device according to claim 8, wherein said dummy cassette further including a sidewall to hold said microphone outwardly spaced from an end of said dummy cassette inserted into the tape player of the vehicle; and whereby, when said dummy cassette is inserted into the tape player of the vehicle, said magnetic transducer fronts the reading head.
Claim 12
Dependent Claim
126 words
A live voice device for use between a portable cellular telephone and a vehicle with a radio receiver and tape player with accompanying loudspeaker system, the radio receiver and cassette player having a magnetic head for reading a magnetically recorded tape, an intermediate frequency amplifier, and a stereo amplifier, said live voice device comprising: a microphone, and electronic means for handling a low frequency signal from the cellular telephone and connected to said microphone, said electronic means resides in the radio receiver and cassette player, said electronic means including an automatic switch-over circuit activated by the low frequency signal from the cellular telephone for directing an output from said microphone, said automatic switch-over circuit connected to the intermediate frequency amplifier, the stereo amplifier, and said microphone.
Claim 13
Dependent Claim
126 words
A live voice device for use between a portable cellular telephone and a vehicle with a radio receiver and tape player with accompanying loudspeaker system, the radio receiver and cassette player having a magnetic head for reading a magnetically recorded tape, an intermediate frequency amplifier, and a stereo amplifier, said live voice device comprising: a microphone, and electronic means for handling a low frequency signal from the cellular telephone and connected to said microphone, said electronic means resides in the radio receiver and cassette player, said electronic means including an automatic switch-over circuit activated by the low frequency signal from the cellular telephone for directing an output from said microphone, said automatic switch-over circuit connected to the intermediate frequency amplifier, the stereo amplifier, and said microphone.
Claim 14
Dependent Claim
18 words
A live voice device according to claim 11, wherein said automatic switch-over circuit includes a conversation masking circuit.
Claim 15
Dependent Claim
70 words
A live voice device according to claim 11, further comprising a connection means for connecting to an external device from a group comprising a facsimile device, data processor, telephone answering machine, and the cellular telephone, said connection means including a dummy cassette having a first sidewall having a male plug to engage a female socket internal to the radio receiver and tape player and a second sidewall having a socket.
Claim 16
Dependent Claim
51 words
A live voice device according to claim 13, further comprising: a magnetic transducer connected to said automatic switch-over circuit to erase and record signals from said automatic switch-over circuit, and a voice synthesizing circuit connected to said automatic switch-over circuit to play a message when activated by said automatic switch-over circuit.
Claim 17
Dependent Claim
60 words
A live voice device according to claim 13, wherein said external connection means includes an infra-red transmitter connected to the cellular telephone, an infra-red receiver mounted on a front panel of the radio receiver, and an adaptor connected to an electric lighter socket of the vehicle housing said microphone and supplying power to the cellular telephone and the infra-red transmitter.
Claim 18
Dependent Claim
60 words
A live voice device according to claim 13, wherein said external connection means includes a radio mini-transmitter connected to the cellular telephone, a radio mini-receiver mounted on a front panel of the radio receiver, and an adaptor connected to an electric lighter socket of the vehicle housing said microphone and supplying power to the cellular telephone and the radio mini-transmitter.
Claim 19
Dependent Claim
34 words
A live voice device according to claim 13, further comprising means for automatically switching-over a preset transmission frequency in the radio receiver to avoid interference with a received radio frequency should the interference occur.
Claim 20
Dependent Claim
127 words
A live voice device for use between a portable cellular telephone and a vehicle with a radio receiver and tape player with accompanying loudspeaker system, the radio receiver and cassette player having a magnetic head for reading a magnetically recorded tape and an external socket to connect with a compact disc reader, said live voice device in an autonomous package comprising: a microphone; an electronic telephone pre-amplifier circuit connected to said microphone; an inhibition circuit for sending an enabling command to the cellular telephone; an external connection means for connecting to the cellular telephone and a power supply of the vehicle, said external connection means connected to said electronic telephone pre-amplifier circuit; and means for connecting to the external socket of the radio receiver and tape player.
Claim 21
Dependent Claim
127 words
A live voice device for use between a portable cellular telephone and a vehicle with a radio receiver and tape player with accompanying loudspeaker system, the radio receiver and cassette player having a magnetic head for reading a magnetically recorded tape and an external socket to connect with a compact disc reader, said live voice device in an autonomous package comprising: a microphone; an electronic telephone pre-amplifier circuit connected to said microphone; an inhibition circuit for sending an enabling command to the cellular telephone; an external connection means for connecting to the cellular telephone and a power supply of the vehicle, said external connection means connected to said electronic telephone pre-amplifier circuit; and means for connecting to the external socket of the radio receiver and tape player.
Claim 22
Dependent Claim
34 words
A live voice device according to claim 18, wherein said external connection means is cable, a connector plug to connect to a power supply, and a connector plug to connect to the cellular telephone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-13 | 2002-01-12 | 2002-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-13 | 2006-01-12 | 2006-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-13 | 2010-01-12 | 2010-07-14 | $7700.00 | Window Closed / Lapsed |