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Mobile Phone Patent Abstract
An integrated mobile-phone handsfree kit combined with an existing
vehicular stereo system utilizes the high power and high performance
audio output characteristics to provide drivers with a safe, comfortable
and high quality conversation environment in vehicle. The invention
comprises an existing stereo equipment with loudspeakers, and an
electric power module connected to the stereo equipment to share
the same power supply. The stereo equipment has a sound output wire
and an electric power supply input wire. The electric power module
has a handsfree kit electric circuit assembly. The handsfree kit
electric circuit assembly has a sound source selecting switch unit,
a power amplifier, an earphone circuit, an audio fidelity processing
unit, an electric power supply unit, a sound source control unit,
and an electric power supply switch. The invention makes it possible
to integrate the mobile-phone handsfree kit together with a vehicular
stereo system to automatically detect the sound source(from stereo
or mobile-phone) and then direct the audio signal to the loudspeaker
output, and therefore simplifies wiring and eliminates the needs
for extra power source and loudspeakers. The integrated handsfree
kit also controls the loudspeakers in different locations by applying
various output powers and phase delays for each loudspeaker in order
to process the audio signal and simulate the sound fields as if
the sound were coming from the front to allow drivers to concentrate
on traffic while in conversation via mobile-phone.
Mobile Phone Patent Claims
What is claimed is:
1. An integrated mobile-phone handsfree kit comprising, in combination:
a mobile-phone;
a vehicular stereo loudspeaker system including sound output loudspeakers;
and a mobile-phone handsfree kit electric circuit assembly as an
interface of both an audio signal stream and a vehicular electric
power supply;
the mobile-phone handsfree kit electric circuit assembly, as for
the audio signal stream interface, being disposed between a sound
output signal wire from the vehicular stereo loudspeaker system
or from the mobile-phone and the sound output loudspeakers;
the mobile-phone handsfree kit electric circuit assembly, as for
the power supply interface, being disposed between an electric power
supply wire of the vehicular stereo loudspeaker system and an electric
power input wire from the vehicular electric power supply system,
with the mobile-phone handsfree kit electric circuit assembly sharing
the same vehicular electric power supply and the sound output loudspeakers
of the vehicular stereo loudspeaker system;
wherein the handsfree mobile-phone kit electric circuit assembly
controls and switches the loudspeaker output between a sound source
of the vehicular stereo loudspeaker system and a conversation audio
source of the mobile-phone, depending on whether the mobile-phone
is in communication or not; and
wherein the mobile-phone handsfree kit electric circuit assembly
does not need an additional electric power supply as conventionally
from a cigarette lighter plug and does not need an additional external
audio output loudspeaker.
2. The integrated mobile-phone handsfree kit as claimed in claim
1, wherein the mobile-phone handsfree kit electric circuit assembly
comprises a sound source control unit, an electric power supply
switch, an electric power supply unit, an audio fidelity processing
unit, a power amplifier, a sound source selecting switch unit, and
an earphone circuit; wherein the sound source control unit detects
and recognizes whether the mobile-phone is in operation for communication
or not, in order to actuate the electric power supply switch; wherein
the electric power supply switch is actuated by the sound source
control unit in order to turn on and turn off the vehicular electric
power supply to the vehicular stereo loudspeaker system temporarily;
wherein the electric power supply unit provides electricity for
the mobile-phone and also charges a battery of the mobile-phone;
wherein the the fidelity processing unit cancels an input acoustic
echo and processes the audio signal stream in order to maintain
high fidelity; wherein the power amplifier amplifies an output audio
signal of the mobile-phone to an acceptable sound level; and wherein
the sound source selecting switch unit is actuated by the sound
source control unit in order to detect and control whether a sound
source of the sound output loudspeakers is coming from the power
amplifier or from the vehicular loudspeaker stereo system.
3. The integrated mobile-phone handsfree kit as claimed in claim
1, wherein the mobile-phone handsfree kit electric circuit assembly
comprises an adjustment/control unit controlling the sound output
loudspeakers in different locations by applying various output powers
and phase delays for each loudspeaker in order to process the audio
signal and simulate the sound fields as if the sound were coming
from the front to allow drivers to concentrate on traffic while
in conversation via the mobile-phone.
Mobile Phone Patent Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to combining an integrated handsfree
kit of mobile-phone with an existing vehicular stereo acoustic loudspeaker.
More particularly, the present invention relates to an integrated
mobile-phone handsfree kit which can utilize the high power and
high fidelity characteristics of the existing vehicular stereo system,
to power the mobile-phone handsfree kit with internal stereo power
cord for simplifying interior wiring and power problems. The invention
also detects and controls the sound source (stereo system or mobile-phone)
for loudspeaker output and simulates the sound field of audio conversation
to highly improve audio quality of wireless communication.
2. Description of the Related Prior Art
Referring to FIG. 1, a conventional mobile-phone handsfree kit
assembly comprises a main electric circuit unit 43, a mobile-phone
holder 45, a plug 44 engaging with a cigarette lighter 100, a microphone
41, a external loudspeaker 42 disposed on dashboard 3, and an electric
power supply wire 441 connected between the plug 44 and the main
electric circuit unit 43. A plurality of electric wires 421 which
are disposed in an interior of a vehicle may be tangled together
and causes driving interference. The mobile-phone holder 45 is to
hold and fasten the mobile-phone set 46. Therefore, the conventional
mobile-phone handsfree assembly is very inconvenient for the users
to talk with mobile-phone while driving.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide drivers
an integrated communication system of a mobile-phone handsfree kit
combining with existing vehicular stereo equipment, which can utilize
the sound output loudspeakers to provide excellent audio quality
for conversation besides normal vehicular stereo function for entertainment.
It is also an object of the present invention to integrate the
power supply of the mobile-phone handsfree kit together with that
of an existing vehicular stereo system. The mobile-phone handsfree
kit utilizes and shares the same existing internal electric power
supply terminal of the stereo system instead of extra wiring to
simplify the installation and to avoid multiple power supplies and
wiring confusion.
It is also an object of the present invention to control and switch
the loudspeaker output between a sound source of the stereo equipment
and a conversation audio source of a mobile-phone, depending on
whether the mobile-phone is in communication or not.
It is also another object of the present invention to control the
loudspeakers in different locations by applying various output powers
and phase delays for each loudspeaker in order to process the audio
signal and simulate the sound fields as if the sound is coming from
the front.
Accordingly, an integrated mobile-phone handsfree kit combined
with a vehicular stereo loudspeaker system comprises a handsfree
kit electric circuit assembly and preinstallated loudspeakers. The
mobile-phone handsfree kit electric circuit assembly is an interface
of both the the audio signal stream and the power supply. As to
the audio signal interface, it is disposed between a sound output
signal wire from the stereo system or from mobile-phone and a sound
output loudspeaker. As to the power supply interface, it is disposed
between an electric power supply wire of the stereo system and an
electric power input wire from the vehicular power supply system.
The handsfree kit electric circuit assembly and vehicular stereo
equipment thereby share the same electric power supply and audio
output loudspeakers. The handsfree kit electric circuit assembly
controls and switches the loudspeaker output between a sound Source
of the stereo equipment and a conversation audio source of a mobile-phone.
The handsfree electric circuit assembly does not need an additional
electric power supply such as conventionally from a cigarette lighter
plug and does not need an additional external audio output loudspeaker.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective schematic view illustrating a conventional
mobile-phone handsfree assembly of the prior art installed in an
interior of a vehicle;
FIG. 2 is a perspective assembly view of vehicular stereo equipment
and a mobile-phone handsfree kit combined with an existing vehicular
loudspeaker of a first preferred embodiment in accordance with the
present invention;
FIG. 3 is a block diagram of an integrated mobile-phone handsfree
kit combined with a vehicular loudspeaker of a first preferred embodiment
in accordance with the present invention;
FIG. 4 is a flow chart illustrating an operation of an integrated
mobile-phone handsfree kit combined with a vehicular loudspeaker
of a first preferred embodiment in accordance with the present invention;
FIG. 5 Is a schematic view illustrating a normal four-loudspeaker
set of a vehicular stereo system disposed in a vehicle; and
FIG. 6 is a block diagram of an integrated mobile-phone handsfree
kit combined with a vehicular loudspeaker of a second preferred
embodiment in accordance with the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIGS. 2 to 5, an integrated mobile-phone handsfree
kit combined with vehicular stereo loudspeaker system comprises
a vehicular stereo equipment 30, and an electric power and control
module 1 connected to the stereo equipment 30. The vehicular stereo
equipment 30 is then connected to a sound output wire 31 and an
electric power supply input wire 32. The electric power and control
module 1 comprises a handsfree kit electric circuit assembly 5.
The handsfree kit electric circuit assembly 5 is an audio and power
supply interface which is disposed between the sound output wire
31 and a first loudspeaker 61 and a second loudspeaker 62. It is
also connected between an electric power supply wire 33 and the
stereo power supply input wire 32. The handsfree kit electric circuit
assembly 5 and the stereo equipment 30 thereby share an electric
power supply, the first loudspeaker 61 and the second loudspeaker
62. The handsfree kit electric circuit assembly switches and directs
the loudspeaker output between a sound source of the stereo equipment
30 and an audio source of a mobile-phone 2 according to an operation
of the mobile-phone 2 communication. The handsfree kit electric
circuit assembly 5 thereby eliminates the need for an additional
electric power supply and an additional external sound output loudspeaker.
The handsfree kit electric circuit assembly 5 comprises a sound
source control unit 51, an electric power supply switch 52, an electric
power supply unit 53, an audio fidelity processing unit 54, a power
amplifier 55, a sound source selecting switch unit 56, and an earphone
circuit 57. The sound source control unit 51 detects and recognizes
whether the mobile-phone 2 is in operation for communication or
not, in order to actuate the electric power supply switch 52. The
electric power supply switch 52 is actuated by the sound source
control unit 51 in order to turn on and turn off an electric power
supply of the stereo equipment 30 temporarily. The electricity power
supply unit 53 provides electricity for the mobile-phone 2 and also
charges the battery of the mobile-phone 2. The audio fidelity processing
unit 54 cancels an input acoustic echo and processes the audio signal
in order to maintain the high fidelity of audio quality. The power
amplifier 55 amplifies an output audio signal of the mobile-phone
2 to an acceptable sound level. The sound source selecting switch
unit 56 is actuated by the sound source control unit 51 in order
to detect and control whether a sound source of a sound output loudspeaker
is coming from the power amplifier 55 or from the stereo equipment
30. A first control line SI is connected to the sound source control
unit 51 and the mobile-phone 2. A second control line S2 is connected
to the sound source control unit 51 and the electric power supply
switch 52. A third control line S3 is connected to the sound source
control unit 51 and the sound source selecting switch unit 56. A
fourth control line S4 is connected to the earphone circuit 57,
the audio fidelity processing unit 54, and the sound source control
unit 51. A microphone 41, the first loudspeaker 61, the second loudspeaker
62, and an carphone 59 are all connected to the handsfree kit electric
circuit assembly 5. A third loudspeaker 63 and a fourth loudspeaker
64 are both connected to the
vehicular stereo equipment 30. The vehicle ignition 10 is connected
to the electric power supply switch 52.
Now referring to FIG. 4, the operation flow chart of the integrated
mobile-phone handsfree kit comprises the following steps:
Step 100: Start.
Step 110: The sound source control unit 51 detects and determines
whether an incoming phone call is received.
Step 120: The stereo equipment 30 operating.
Step 130: The electric power supply switch 52 shuts off the stereo
equipment 30 keeps.
Step 140: The audio fidelity processing unit 54 eliminates the
noise and cancels the acoustic echo to maintain the high fidelity
of audio quality.
Step 150: The earphone 59 is connected to the earphone circuit
57.
Step 160: The sound signal is outputted via the earphone 59.
Step 170: The power amplifier 55 amplifies an output audio signal
of the mobile-phone 2.
Step 180: The sound source selecting switch unit 56 selects and
determines a predetermined loudspeaker to output the sound signal.
The sound source selecting switch unit 56 is controlled by the sound
source control unit 51.
Referring to FIG. 6, another mobile-phone assembly comprises stereo
equipment 30', and an electric power and control module 1' connected
to the stereo equipment 30'. The stereo equipment 30' comprises
a sound output wire 31' and an electric power supply input wire
32'. The electric power and control module 1' comprises a sound
source selecting switch unit 56', an adjustment/control unit 65',
a power amplifier 55', an earphone circuit 57', an audio fidelity
processing unit 54', an electric power supply unit 53', a sound
source control unit 51', and an electric power supply switch 52'.
A first control line S1' is connected to the sound source control
unit 51' and the mobile-phone 2'. A second control line S2' is connected
to the sound source control unit 51'and the electric power supply
switch 52'. A third control line S3' is connected to the sound source
control unit 51' and the sound source selecting switch unit 56'.
A fourth control line S4' is connected to the earphone circuit 57',
the audio fidelity processing unit 54', and the sound source control
unit 51'. A microphone 41', the first loudspeaker 61', the second
loudspeaker 62', and an earphone 59' are all connected to the electric
power and control unit 1'. A third loudspeaker 63' and a fourth
loudspeaker 64' are both connected to the vehicular stereo equipment
30'. The vehicle ignition 10' is connected to the electric power
supply switch 52'. The adjustment/control unit 65' controls the
loudspeakers in different locations applying various output powers
and phase delays for each loudspeaker in order to process the audio
signal and simulate the sound fields as if the sound is coming from
the front.
The present invention in not limited to the embodiment mentioned
above, but a variety of modifications thereof may be made for other
applications. Further, various variations in form and detail may
be made without departing from the scope of the present invention.
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