GB2331428A - Vehicle audio system for cellular phone - Google Patents

Vehicle audio system for cellular phone Download PDF

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Publication number
GB2331428A
GB2331428A GB9802139A GB9802139A GB2331428A GB 2331428 A GB2331428 A GB 2331428A GB 9802139 A GB9802139 A GB 9802139A GB 9802139 A GB9802139 A GB 9802139A GB 2331428 A GB2331428 A GB 2331428A
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United Kingdom
Prior art keywords
cellular phone
low frequency
car audio
voice signals
input
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9802139A
Other versions
GB9802139D0 (en
GB2331428B (en
Inventor
Sang Ho Choi
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Individual
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Individual
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Filing date
Publication date
Priority claimed from KR1019970060902A external-priority patent/KR100292022B1/en
Priority claimed from KR1019970060903A external-priority patent/KR19990040501A/en
Application filed by Individual filed Critical Individual
Publication of GB9802139D0 publication Critical patent/GB9802139D0/en
Publication of GB2331428A publication Critical patent/GB2331428A/en
Application granted granted Critical
Publication of GB2331428B publication Critical patent/GB2331428B/en
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H04M1/6075—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle
    • H04M1/6083—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0241—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/08—Constructional details, e.g. cabinet
    • H04B1/082—Constructional details, e.g. cabinet to be used in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3805—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving with built-in auxiliary receivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
    • B60R11/0247—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for microphones or earphones

Abstract

A vehicle audio system for a cellular phone includes: an automatic signal selector 16 for selecting and outputting voice signals transmitted from the cellular phone to a low frequency amplifier 17 if the cellular phone is in use, or for outputting voice signals transmitted from a demodulator 15 to the low frequency amplifier 17 if the cellular phone is not in use. A power supply unit 19 is provided for supplying power from the vehicle battery to the system. A recharging circuit is provided for supplying power from the power supply unit to the cellular phone; and an amplifier 14 for amplifying voice signals input from an external microphone 41, 42 to send to the cellular phone. The system reduces damage to a car body and deterioration of a car's appearance as a hand-free apparatus is not separately installed. The structure of the system is simple because a speaker already-equipped in the car audio system for use with a radio or a cassette player, for example, of the car audio system can be used for the cellular phone.

Description

2331428 VElfiCLE AUDIO SYSTEM FOR CELLULAR PHONE
Background of the Invention
Field of the Invention
The present invention relates to a vehicle audio system, and more particularly to a vehicle audio system for a cellular phone to improve convenience of the cellular phone and to simplify structure thereof.
Description of the Prior Art
A conventional portable wireless cellular phone (hereinafter referred to as a cellular phone) is widely used to allow people to conveniently carry out an office work at an automobile or on street away from the office where they usualiv work.
However. many problems have emerged as side effects as the cellular phone becomes more and more popular. For instance, a driver makes a call and talks over the cellular phone with one hand while driving a car with the other hand. thereby. reducing the driver's concentration on driving and increasing the risk of traffic accidents.
In addition. a cellular phone user has a tendency to closely put the cellular phone to an ear while talking over the cellular phone which generates harmful electromagnetic %k.a,,.es. so that the user is exposed to the harmful electromagnetic waves which negatively affect his or her brain waves while talking over the cellular phone. Therefore, there is a problem in the conventional cellular phone in that the harmful heat energy of the 1 electromagnetic waves generated from the cellular phone may cause health problems to the user.
A cellular phone which can be used without hands (hereinafter referred to as a cellular phone) has been developed to solve the aforementioned problems. A hand-free apparatus of the cellular phone, as shown in Fig. 1. includes a hand-free unit(2) fixed at one side of a car body(3) for attaching or detaching the cellular phone(l), an external microphone(4) and a speaker disposed at another side of the car body(3) as the microphone(4) and the io speaker are electrically connected to the hand-free unit(2).
The hand-free unit(2) is used for supplying the power generated from a car battery to the cellular phone(l). for outputting voices from the cellular phone(l) to the speaker(5) and for inputting the voices sent through the external microphone(4) to the cellular phone(l). Therefore, the driver hears voices with the speaker(5) and talks on the external microphone(4) while driving, thereby using the cellular phone(l) without holding in a hand.
However, there are problems in the conventional hand-free apparatus of the cellular phone in that the hand-free unit is fixed at a hole made at the car body, thereby causing a difficulty in installation, a damage on the car body. a poor appearance of the car body due to the hand-free unit installed on the car body and troubles and inconvenience to drivers and passengers.
In addition, there are additional problems in the conventional hand-free apparatus of the cellular phone in that an external microphone and a speaker are additionally used, thereby making structure of the cellular phone system complicated. deteriorating appearance of the car body due to electric wiring and causing troubles to drivers and passengers.
2 Summary of the Invention
The present invention is presented to solve the aforementioned problems and it is an object of the present invention to provide a car audio system for a cellular phone, which prevents damage of a car body or deterioration of a car appearance due to installation of a separate hand- free apparatus.
It is another object of the present invention to use a speaker alreadyequipped at the car audio for a cellular phone as well as for a radio or a cassette tape and a display element of the cellular phone for indicating a current utility status of the cellular phone or the car audio, thereby simplifying structure thereof.
In order to achieve the objects of the present invention, there is provided a car audio system for a cellular phone having a low frequency amplifier for amplifying and outputting a low frequency of voice signals tuned and demodulated the electric waves induced from an antenna and a low frequency of voice signals regenerated at the cassette tape and a speaker for outputting the voice signals changed from the low frequency of voice signals into mechanical vibrations after being amplified at the low frequency amplifier.
wherein the system includes:
an automatic signal selector for selecting and outputting voice signals transmitted from the cellular phone to the low frequency amplifier if the cellular phone is in use, or for outputting voice signals transmitted from a demodulator to the low frequency amplifier if the cellular phone is not in use; a power supply unit for supplying power from the car battery to the car audio; a recharging circuit for supplying power from the power supply unit to the cellular phone; 3 an amplifier for amplifying the voice signals input from the external microphone to send to the cellular phone; a cellular phone accommodating unit disposed at a front side of the car audio; and a terminal unit formed at one side of the cellular phone accommodating unit for electrically connecting the cellular phone and the car audio.
Brief Description of the Drawings
For fuller understanding of the nature and objects of the invention, reference should be made to the following detailed description of preferred embodiments of the invention. which is given by way of example and with reference to the accompanying drawings in which:
Fig. 1 is a brief diagram of a hand-free apparatus of a cellular phone in accordance with an embodiment of the prior art;
Fig. 2 is a brief appearance of a car audio system for a accordance with a first embodiment of the present invention; Fig. 3 is a block diagram of a car audio system for a cellular phone in accordance with a first embodiment of the present invention; Fig. 4 is a brief appearance of a car audio system for a cellular phone in 2o accordance with a second embodiment of the present invention; Fig. 5 is a block diagram of a car audio system for a cellular phone in accordance with a second embodiment of the present invention; Fig. 6 is a brief appearance of a car audio system for a cellular phone in accordance with a third embodiment of the present invention; Fig. 7 is a block diagram of a car audio system for a cellular phone in accordance with a third embodiment of the present invention; Fig. 8 is a perspective view for illustrating a car audio system for a cellular phone in accordance with a fourth embodiment of the present invention; Fig. 9 is a separate perspective view for illustrating a car audio system for a cellular phone in 4 cellular phone in accordance with a fourth embodiment of the present invention; Fig. 10 is a perspective view of a cellular phone shown in Fig. 9: Fig. 11 is a block diagram of a car audio system for a cellular phone in 5 accordance with a fourth embodiment of the present invention: and Fig. 12 is a block diagram of a cellular phone shown in Fig. 11.
to Preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. Fig. 2 is a schematic diagram of a car audio system for a cellular phone in accordance with a first embodiment of the present invention. Fig. 3 is a block diagram of a car audio system for a cellular phone in accordance with a first embodiment of the present invention.
In the car audio system for a cellular phone-++ in accordance with a first embodiment of the present invention, a first connector(l 1) formed at a rear side of a car audio(I0) and a second connector(31) linked to a cellular phone(30) are electrically connected to the cellular phone and the external 20 microphones(41 and 42).
A first external microphone(41) is disposed at one side of a sun shield mounted at an upper portion of the front side of the car, and a second external microphone(42) is attached on a front side of the car audio(I0).
The car audio(I0) includes an antenna(12), a tuner(13), an intermediate frequency amplifier(I4), a demodulator(15), an automatic signal selector(16), a low frequency amplifier(I7), a speaker(I8), a power supply unit(19), a recharging circuit(21), a microphone selector(22) and an amplifier(23).
The tuner(13) selects and transforms a targeted frequency out of electric waves input at the antenna(l 2) into the intermediate frequency to send to the intermediate frequency amplifier(I4), which subsequently amplifies and transmits the intermediate frequency signals to the demodulator(15). The demodulator(15) detects only the low frequency of voice si nals out of the 1 9 intermediate frequency signals input from the amplifier(14) to send to the automatic signal selector(16).
The automatic signal selector(16) selects the voice signals output from io the cellular phone(30) according to the control signal transmitted from the cellular phone(30) through the second connector(31) and the first connector(I1) to thereby input to the low frequency amplifier(I7) or selects the low frequency of voice signals output from the demodulator(15) to thereby input to the low frequency amplif ler(l 7).
The automatic signal selector(16) selects the voice signals output from the cellular phone(30), if the cellular phone(30) is in use, to input to the low frequency amplifier(I7), and selects the low frequency of voice signals output from the demodulator(15), if the cellular phone(30) is not in use, to input to 20 the low frequency amplifier(I7).
The low frequency amplifier(I7) amplifies the signals input from the automatic signal selector(16) to output to the speaker(I8), which transforms the signals sent from the low frequency amplifier(I7) into mechanical vibrations to thereby output voices.
The power supply unit(19) supplies the power from the car battery(50) to drive the car audio(I0) and to recharge the recharging circuit(21) which supplies power from the power supply unit(19) through the first connector(l 1) 6 and the second connector(3 1) to the cellular phone(30).
The microphone selector(22) selectively inputs the voice signals input from the first and the second external microphones(41 and 42) according to the manipulation of a microphone selection button(25) attached at a front side of the car audio(I0). The amplifier(23) amplifies the voice signals input through the microphone selector(22) to transmit through the first and second connectors(l 1 and 3 1) to the cellular phone(30).
Fig. 4 is a brief appearance of a car audio system for a cellular phone in accordance with a second embodiment of the present invention. Fig. 5 is a block diagram of a car audio system for a cellular phone in accordance with a second embodiment of the present invention. In Figs. 4 and 5, like reference numerals and symbols are used for designation of like or equivalent parts or portions in Figs. 2 and 3 for simplicity of illustration and explanation, and redundant references will be omitted.
In the car audio system for a cellular phone in accordance with a second embodiment of the present invention, a first connector(l 1) formed at a front side of a car audio(I0) and a second connector(31) linked to a cellular phone(30) are electrically connected.
The car audio(I0) includes an antenna(12), a tuner(13), an intermediate frequency amplifier(I4), a demodulator(15), an automatic signal selector(16), a low frequency amplifier(17), a speaker(I8), a power supply unit(19), a recharging circuit(21), an amplifier(23) and a signal selection button(26).
The tuner(13) selects and transform a targeted frequency out of electric waves input at the antenna(12) into the intermediate frequency to input to the 7 intermediate frequency amplifier(I4), which subsequently amplifies and inputs the intermediate frequency signals to the demodulator(15). The demodulator (15) detects only the low frequency of voice signals out of the intermediate frequency signals input from the amplifier(I4) to send to the automatic signal selector(16).
The automatic signal selector(16) selects the voice signals output from the cellular phone(30) according to the manipulation of the signal selection button(26) to input to the low frequency amplifier(17), selects the low io frequency of voice signals output from the demodulator(15) to input to the low frequency amplifier(I7), or simultaneously inputs the caller's voice signal and a low frequency of a voice signal input from the cellular(30) and the demodulator(l 5) into the low frequency amplifier(l 7).
The automatic signal selector(16) selects the voice signals output from the cellular phone(30) with manipulation of the signal selection button(26), if the cellular phone(30) is in use, to input to the low frequency arnplifier(17), and selects the low frequency of voice signals output from the demodulator(15) with manipulation of the signal selection button(26), if the cellular phone(30) is not in use, to input to the low frequency amplifier(I7). If the user manipulates the signal selection button(26) to simultaneously select the caller's voice signal and the low frequency of the voice signal from the cellular(30) and the demodulator(15), the caller's voice signal and the low frequency of the voice signal are simultaneously input at the low frequency amplifier(l 7).
The low frequency amplifier(I7) amplifies signals input from the automatic signal seleptor(16) to output to the speaker(18), which transforms the signals sent from the low frequency amplifier(I7) into mechanical 8 vibrations to output voices.
The power supply unit(19) supplies the power from the car battery(50) to drive the car audio(I0) and to recharge the recharging circuit(21) which supplies power from the power supply unit(19) through the fixst connector(l 1) and the second connector(3 1) to the cellular phone(30).
The amplifier(23) amplifies the voice signals input from the external microphone(42) installed at the front side of the car audio(I0) to input io through the first and second connectors(l 1 and 3 1) to the cellular phone(30).
Fig. 6 is a brief appearance of a car audio system for a cellular phone in accordance with a third embodiment of the present invention. Fig. 7 is a block diagram of a car audio system for a cellular phone in accordance with a third embodiment of the present invention. In Figs. 6 and 7, like reference numerals and symbols are used for designation of like or equivalent parts or portions in Figs. 2 and 3 for simplicity of illustration and explanation, and redundant references will be omitted.
In the car audio system for a cellular phone in accordance with a third embodiment of the present invention, a car audio(I0), a hand-free unit(20) disposed at an external side of the car audio(10) in an electrical connection thereof and a cellular phone (30) and an external microphone(41) electrically connected to the hand-free unit(20). The external microphone(41) is installed at one side of the sun shield disposed at an upper portion of the front side of the car for inputting the caller's voice signals to the hand-free unit(20).
The hand-free unit(20) transmits the voice signals and control signals output from the cellular phone(30) to the car audio(I0). The first and second 9 connectors(27 and 28) are assembled to supply power from the car audio(. 10) to the cellular phone(30) by connecting the recharging circuit(21), the amplif-ier(2-")) and the hand-free unit(20) to the car audio(I0) and cellular phone(30).
The first connector(27) is disposed for electrically connecting the handfree unit(20) to the external microphone(41) and the car audio(I0), while the second connector(28) is disposed for electrically connecting the hand-free unit(20) to the cellular phone(30).
The recharging circuit(21) is made to supply the power supplied from the car audio(I0) through the first and second connectors(27 and 28) to the cellular phone(30). The amplifier(23) amplifies the voice signals input from the external microphone(41) through the first connector(27) to send through 15 the second connector(28) to the cellular phone(30).
The first and second connectors(27 and 28) are electrically connected to input voice signals and control signals sent from the cellular phone(30) to the car audio( 10).
The car audio(I0) includes an antenna(12), a tuner(13), an intermediate frequency amplifier(I4), a demodulator(15), an automatic signal selector(16), a low frequency amplifier(l 7), a speaker(l 8), and a power supply unit(l 9).
The tuner(13) selects and transforms a targeted frequency out of electric waves input at the antenna(12) into the intermediate frequency to input to the intermediate frequency amplifier(I4), which subsequently amplifies and inputs the intermediate frequency signals to the demodulator(15). The demodulator (15) detects only the low frequency of voice signals out of the intermediate frequency signals input from the amplifier(I4) to send to the automatic signal selector(16).
The automatic signal selector(16) selects the voice signals input from the cellular phone(30) according to the control signals input from the cellular phone(30) through the second and first connectors(28 and 27) to input to the low frequency amplifier(I7) or selects the low frequency of voice signals input from the demodulator(l 5) to input to the low frequency amplifier(l 7).
The automatic signal selector(16) selects the voice signals output from the cellular phone(30), if the cellular phone(30) is in use, to input to the low frequency amplifier(I7), and selects the low frequency of voice signals output from the de modulator( 15), if the cellular phone(30) is not in use, to input to the low frequency amplifier(I7).
The low frequency amplifier(I7) amplifies signals input from the automatic signal selector(16) to output to the speaker(I8), which transforms the signals sent from the low frequency amplifier(I7) into mechanical vibrations to thereby output voices.
The power supply unit(19) supplies the power from the car battery(S0) to drive the car audio(10) and through the first connector(27) to the recharging circuit(21) of the hand-free unit(20).
Fig. 8 is a perspective view for illustrating a car audio system for a cellular phone in accordance with a fourth embodiment of the present invention. Fig. 9 is a separate perspective view for illustrating a car audio system for a cellular phone in accordance with a fourth embodiment of the present invention. Fig. 10 is a perspective view of a cellular phone shown in Fig. 9.
In the car audio system for a cellular phone in accordance with a fourth embodiment of the present invention, a car audio(I0) includes a cellular phone accommodating unit(62) disposed at the front side of the car audio(10) for placing the cellular phone(30) and a terminal unit(70) disposed at one side of the cellular phone accommodating unit(62) for electrically connecting the car audio(10) and the cellular phone(30) as the cellular phone(30) is put on the cellular phone accommodating unit(62).
The antenna(33) of the cellular phone(30) is hinged for rotation, and an antenna accommodating unit(35) is included at one portion of the rear side of the cellular phone(J30) for putting the antenna(33) of the cellular phone(30) as it is rotated.
Fig. 11 is a block diagram of a car audio system for a cellular phone in accordance with a fourth embodiment of the present invention, and Fig. 12 is a block diagram of a cellular phone shown in Fig. 11. In Figs. 11 and 12.
like reference numerals and symbols are used for designation of like or equivalent parts or portions in Figs. 2 and 3 for simplicity of illustration and explanation, and redundant references will be omitted.
The car audio(I0) includes an antenna(12), a tuner(13), an intermediate frequency amplifier(I4), a demodulator(15), an automatic signal selector(16), a low frequency amplifier(17), a speaker(18), a power supply unit(19). a recharging circuit(21), an amplifier(23) and a microcomputer(60).
The tuner(13) selects and transforms a targeted frequency out of electric waves input at the antenna(12) into the intermediate frequency to input to the 12 intermediate frequency amplifier(I4), which subsequently amplifies and inputs the intermediate frequency signals to the demodulator(15). The demodulator(15) detects only the low frequency of voice signals out of the intermediate frequency signals input from the amplifier(I4) to send to the automatic signal selector(16).
The microcomputer(60) controls general operations of the car audio(10), and the automatic signal sefector(16) according to the control signals input from the cellular phone(30) placed at the accommodating unit(62) formed at io the front part of the car audio(I0) through the terminal unit(70).
If the cellular phone is in use, the cellular phone(30) inputs a control signal for selecting the caller's voice signals output from the cellular phone(30) through the terminal unit(70) to the microcomputer(60). If the cellular phone(30) is not in use, the cellular phone(30) inputs a control signal for selecting the low frequency of voice signals output from the demodulator(l 5) through the terminal unit(70) to the microcomputer(60).
The automatic signal selector(16) selects the voice signals input from the cellular phone(30), if the cellular phone is in use, according to the control of the microcomputer(60) to input to the low frequency arnplifier(l 7) or selects the low frequency of voice signals input from the demodulator(15), if the cellular phone is not in use, to input to the low frequency amplifiler(17).
The low frequency amplifier(I7) amplifies a signal input from the automatic signal selector(16) to output to the speaker(18), which transforms the signals sent from the low frequency amplifier(I7) into mechanical vibrations to thereby output voices.
13 The power supply unit(19) supplies the power from the car battery(50) to drive the car audio(I0) and to recharge the recharging circuit(21) which supplies power from the power supply unit(19) through the terminal unit(70) to the cellular phone(30).
The amplifier(23) amplifies the voice signals input from the external microphone(41) installed at the front side of the sun shield to input through the terminal unit(70) to the cellular phone(30).
The cellular phone(30) includes a microcomputer(36), a display elernent(37) and a display element driving unit(38). The microcomputer(36) electrically connects the cellular phone(30) and the car audio(I0) by way of the terminal unit(70) as the cellular phone(30) is placed at the cellular phone accommodating unit(62).
The microcomputer(36) detects the time when the cellular phone(30) is placed at the cellular phone accommodating unit(62) to transmit a control signal for displaying the cellular phone display data to the display element driving unit(38) and a cellular phone display data for indicating the current status of the cellular phone(30). The microcomputer(36) outputs a control signal for displaying car audio display data to the display element driving unit(38) if the cellular phone(30) is detached from the car audio(I0).
The display element driving unit(38) sends a cellular phone display data input from the microcomputer(36) to the display element(37), if the control signal related thereto is input, and a car audio display data from the microcomputer(36) to the display element(37), if the control signal related thereto is input.
14 The display element(37) is made up of a liquid crystal display (LCD) element for displaying the cellular phone display data or the car audio display data output from the display element driving unit(38).
Next, operational procedures and operational effects of the car audio system for a cellular phone are described in detail. As described in a first embodiment of the present invention, the tuner(13) selects and transforms a targeted frequency out of electric waves input at the antenna(12) into the intermediate frequency to input to the intermediate frequency amplifier(I4), io which subsequently amplifies and inputs the intermediate frequency signals to the demodulator(15). The demodulator(15) detects only the low frequency of voice signals out of the intermediate frequency signals input from the amplifier(I4) to send to the automatic signal selector(16).
The automatic signal selector(16) selects the voice signals input from the cellular phone(30) according to the control signal transmitted from the cellular phone(30) through the second connector(31) and the first connector(l 1) to input to the low frequency amplifier(l 7) or selects the low frequency of voice signals input from the demodulator(15) to input to the low frequency amplifier(l 7).
If the cellular phone(30) is in use, the control signal for selecting the caller's voice signals output from the cellular phone(30) is input through the second and first connectors(3 1 and 11) to the automatic signal selector(l 6). Then, the automatic signal selector(16) inputs the caller's voice signals output from the cellular phone(30) to the low frequency amplifier(I7) according to the control signal sent from the cellular phone(30).
If the cellular phone(30) is not in use, the control signal for selecting the low frequency of voice signals output from the demodulator(15) is input through the second and first connectors(31 and 11) to the automatic signal selector( 16). Then, the automatic signal selector(16) inputs the low frequency of voice signals output from the cellular phone(30) to the low frequency amplifier(I7) according to the control signal sent from the cellular phone(30).
Furthermore, the low frequency amplifier(I7) amplifies the voice signals input from the automatic signal selector(16) to output to the io speaker(I8), which transforms the voice signals sent from the low frequency amplifier(I7) into mechanical vibrations to thereby output voices.
Accordingly, the caller's voice signals output from the cellular phone(30) is regenerated at the speaker(I8) if the cellular phone is in use.
On the other hand, the low frequency of voice signals output from the demodulator(15) are regenerated at the speaker(I8) for listening to a radio or a cassette tape, if the cellular phone(30) is not in use.
If a caller selects a first external microphone(41) disposed at the sun shield with manipulation of the microphone selection button(25) installed at the front side of the car audio(I0), the microphone selector(22) inputs the voice signals sent from the first external microphone(41) to the amplifier(23). If a caller selects a second external microphone(42) disposed at the front side of the car audio(I0) with manipulation of the microphone selection button(25), the microphone selector(22) inputs the voice signals sent from the second external microphone(42) to the amplifier(23).
The amplifier(23) amplifies the voice signals input through the microphone selector(22) to transmit through the first and second 16 connectors(l 1 and 3 1) to the cellular phone(30), which sends the voice signals input through the amplifier(23) of the car audio(I0) to a telephone base station, whereby calls can be made.
The power supply unit(19) supplies the power from the car battery(50) to drive the car audio(I0) and to recharge the recharging circuit(21) which supplies power from the power supply unit(19) through the first connector(l 1) and the second connector(3 1) to the cellular phone(30).
As described in the second embodiment of the present invention, the tuner(13) selects and transforms a targeted frequency out of electric waves input at the antenna(12) into the intermediate frequency to input to the intermediate frequency ampli:Fier(I4), which subsequently amplifies and inputs the intermediate frequency signals to the demodulator(15). The demodulator(15) detects only the low frequency of voice signals out of the intermediate frequency signals input from the amplifier(I4) to send to the automatic signal selector(16).
The automatic signal selector(16) selects the voice signals input from the cellular phone(30) according to the manipulation of the signal selection button(26) to input to the low frequency amplifier(17), selects the lowfrequency of voice signals input from the demo dulator(15) to input to the low frequency amplifier(I7) or simultaneously selects the caller's voice signal and the low frequency of voice signals from the cellular(30) and the demodulator(l 5) to input to the low frequency amplifier(l 7).
In other words, if the caller manipulates the signal selection button(26) to input the control signal for selecting the caller's voice signals output from the cellular phone(30) to the automatic signal selector(16). the automatic 17 signal selector(16) selects the voice signals output from the cellular phone(30) through the second and first connectors(31 and 11) to input to the low frequency amplifier(I7).
If the caller manipulates the signal selection button(26) to input a control signal for simultaneously selecting the caller's voice signal and the voice signals output from the cellular(30) and the demodulator(15) to the automatic signal selector(16), the automatic signal selector(16) selects the caller's voice signal and the low frequency of voice signals output from the io cellular(30) and the demodulator(15) to input to the low frequency amp 1 i fli er( 17).
The low frequency amplifier(I7) amplifies a signal input from the automatic signal selector(16) to output to the speaker(I8), which transforms the signals sent from the low frequency amplifier(I7) into mechanical vibrations to thereby output voices.
The caller's voice signals output from the cellular phone(30) is regenerated at the speaker(I8) if the cellular phone is in use. On the other hand, the low frequency of voice signals output from the demodulator(15) are regenerated at the speaker(I8) for listening to a radio or a cassette tape. if the cellular phone(30) is not in use.
Then, the caller's voice is input through the external microphone(42) disposed at the front side of the car audio(I0) to the amplif-ler(23). The amplifier(23) amplifies the voice signals input through the signal selector(22) to transmit through the first and second connectors( 11 and 3 1) to the cellular phone(30), which sends the voice signals input through the ampliflier(23) of the car audio(I0) to a telephone base station. whereby calls can be made.
18 The power supply unit(19) supplies the power from the car battery(50) to drive the car audio(10) and to recharge the recharging circuit(21) which supplies power from the power supply unit(19) through the first connector(l 1) and the second connector(3 1) to the cellular phone(30).
As described in the third embodiment of the present invention, the tuner(13) selects and transforms a targeted frequency out of electric waves input at the antenna(12) into the intermediate frequency to input to the io intermediate frequency amplifier(I4), which subsequently amplifies and inputs the intermediate frequency signals to the demodulator(15). The demodulator(15) detects only the low frequency of voice signals out of the intermediate frequency signals input from the amplifier(14) to send to the automatic signal selector(16).
The automatic signal selector(16) selects the caller's voice signals input from the cellular phone(30) according to the control signals input from the cellular phone(30) through the second and first connectors(28 and 27) to input to the low frequency amplifier(17) or selects the low frequency of voice signals input from the demodulator(15) to input to the low frequency amplifier(17).
If the cellular phone is in use, the control signal for selecting the caller5s voice signals output from the cellular phone(30) is input through the second and first connectors(28 and 27) to the automatic signal selector(16) which selects the caller's voice signals to input to the low frequency amplifier(I7) according to the control signal input from the cellular phone(30).
If the cellular phone is not in use, the control signal for selecting the 19 voice signals output from the demodulator(15) is input through the second and first connectors(28 and 27) to the automatic signal selector(16), which selects the low frequency of voice signals output from the demodulator(15) to input to the low frequency amplifier(I7).
The low frequency amplifier(I7) amplifies a signal input from the automatic signal selector(16) to output to the speaker(18), which transforms the signals sent from the low frequency amplifier(17) into mechanical vibrations to output voices.
The caller's voice signals output from the cellular phone(30) is regenerated at the speaker(18) if the cellular phone is in use. On the other hand. the low frequency of voice signals output from the dernodulator(15) are regenerated at the speaker(18) for listening to a radio or a cassette tape, if the cellular phone(30) is not in use.
Then, the caller's voice is input through the external microphone(41) to the amplifier(23) of the hand-free unit(20). The amplifier(23) amplifies the voice signals input from the external microphone(41) to transmit through the second connector(28) to the cellular phone(30), which sends the voice signals input through the amplifier(23) of the hand-free unit(20) to a telephone base station, whereby calls can be made.
The power supply unit(19) supplies the power from the car batterv(50) to drive the car audio(I0) and to recharge the recharging circuit(21) of the hand free unit(20) through the first connector(27). The recharging circuit(21) of the hand-free unit(20) sends the power supplied from the power supply unit(19) through the first connector(27) to the cellular phone(30) through the second connector(28).
As described in the fourth embodiment of the present invention. the tuner(13) selects and transforms a targeted frequency out of electric waves input at the antenna(12) into the intermediate frequency to input to the intermediate frequency amplifier(I4), which subsequently amplifies and inputs the intermediate frequency signals to the demodulator(15). The demodulator(15) detects only the low frequency of voice signals out of the intermediate frequency signals input from the amplifier(I4) to send to the automatic signal selector(16).
If the cellular phone(30) is not in use, the cellular phone(30) inputs a control signal for selecting the low frequency of voice signals output from the demodulator(15) through the terminal unit(70) to the microcomputer(60), which controls the automatic signal selector(16) according to the control signal input from the cellular phone(30) to select and output the low frequency of voice signals output from the demodulator(15).
If the cellular phone(30) is in use, the cellular phone(30) inputs a control signal for selecting the caller's voice signals output from the cellular phone(30) through the terminal unit(70) to the microcomputer(60) of the car audio. which controls the automatic signal selector(16) according to the control signal input from the cellular phone(30) to select and output the voice signals output from the cellular phone(30).
The automatic signal selector(16) selects the caller's voice signals input from the cellular phone(J30) according to the control signal of the microcomputer(60) to input to the low frequency amplifier(I7) or selects the low frequency of voice signals input from the demodulator(15) to input to the low frequency amplifier(I7).- 21 The low frequency amplifier(I7) amplifies a signal input from the automatic signal selector(16) to output to the speaker(I8), which transforms the signals sent from the low frequency amplifier(I7) into mechanical vibrations to thereby output voices.
The caller's voice signals output from the cellular phone(30) is regenerated. at the speaker(18) if the cellular phone is in use. On the other hand, the low frequency of voice signals output from the demodulator(15) are io regenerated at the speaker(18) for listening to a radio or a cassette tape, if the cellular phone(30) is not in use.
is Then, the caller's voice input through the external microphone(41) is amplified to transmit through the terminal unit(70) to the cellular phone(30), which sends the voice signals input through the amplif-ler(23) of the car audio(l 0) to a telephone base station, whereby calls can be made.
The power supply unit(19) supplies the power from the car battery(50) to drive the car audio(I0) and to recharge the recharging circuit(21) which supplies power from the power supply unit(19) through the terminal unit(70) to the cellular phone(30).
On the other hand, the microcomputer(36) of the cellular phone(30) detects the time when the cellular phone(30) is detached from the cellular phone accommodating unit(62) with the cellular phone(30) and the car audio(I0) being electrically detached by the terminal unit(70), and sends a control signal for displaying the cellular phone display data and a cellular phone display data for indicating the current status of the cellular phone(J30) to the display element driving unit(38).
22 If the cellular phone(30) is placed at the cellular phone accommodating unit(62) of the car audio(I0) to get the cellular phone(30) and the car audio(l 0) electrically connected by the terminal unit(70), the microcomputer(36) outputs a control signal for displaying car audio display data to the display element driving unit(38).
The display element'driving unit(38) sends a cellular phone display data input from the microcomputer(36) to the display element(37), if the io control signal related thereto is input, and a car audio display data from the microcomputer(36) to the display element(37), if the control signal related thereto is input.
The antenna(33) of the cellular phone(30) is hinged for rotation, and an antenna accommodating unit(35) is included at one portion of the rear side of the cellular phone(30) for putting the antenna(33) of the cellular phone(30) as it is rotated. Therefore, it is possible to rotate and put out the antenna(33) if necessary, or to place the antenna(33) at the accommodating unit(35).
Apparent from the aforementioned description, there are advantages in the car audio system for the cellular phone in that a hand-free apparatus is not separately installed, thereby preventing damages of a car body or deterioration of a car appearance.
In addition, there are further advantages in the car audio system for the cellular phone in that a speaker already-equipped at the car audio is used as a dual functions for a radio or a cassette tape and for a cellular phone, and the display element of the cellular phone is commonly used to thereby simpliR. the structure of the cellular phone system.
23

Claims (9)

  2. 2 1. A vehicle audio system for a cellular phone comprising a low frequency amplifier for amplifying and outputting a low frequency element of a voice signal tuned and demodulated from electric waves induced in an antenna and a speaker for outputting a voice signal obtained from the said low frequency element amplified at the low frequency amplifier, wherein the system further comprises: an automatic signal selector for selecting and outputting voice signals transmitted from the cellular phone to the low frequency amplifier if the cellular phone is in use, or for outputting voice signals transmitted from a demodulator to the low frequency amplifier if the cellular phone is not in use; an external microphone; and an amplifier for amplifying the voice signals input from the external microphone to send to the cellular phone, 2. A system according to claim 1, wherein the external microphone comprises: a first microphone disposed at one side of a sun shield; a second microphone attached on a front side of a car audio; a microphone selection button mounted at a front side of a car audio; and a microphone selector which selectively transmits the voice signals input from the first or the second external microphones to the amplifier according to manipulation of the microphone selection button.
  3. 24 A system, according to claim 1, wherein the automatic signal selector selects callers voice signals or a low frequency of voice signals output from the cellular phone to send to the low frequency amplifier as a signal selection button attached at a front side of the car audio is manipulated, or selects the callers voice signals and a low frequency of voice signals to simultaneously transmit to the low frequency amplifier.
  4. 4. A system, according to claim 1, wherein the cellular phone is io electrically connected to the car audio by a connector disposed at a front side of the car audio.
  5. 5. A system, according to claim 1, wherein the amplifier and the recharging circuit are embedded at the hand-free unit on an external part of the car audio, and the hand-free unit electrically connects the cellular phone and the car audio.
  6. 6. A system, according to claim 1, wherein a cellular phone accommodating unit is disposed at a front side of the car audio and a terminal unit is formed at one side of the cellular phone accommodating unit for electrically connecting the cellular phone and the car audio if the cellular phone is placed at the cellular phone accommodating unit.
  7. 7. A system, according to claim 6, wherein a cellular phone antenna is rotated and an antenna accommodating unit is disposed where the antenna is rotated and placed.
  8. 8. A system according to claim 6 or 7, wherein the cellular phone comprises:
    a microcomputer for controlling general operations of the cellular phone and for outputting a cellular phone display data to show a current status of the cellular phone and for sending a control signal after discriminating whether the cellular phone and the car audio are electrically connected when the cellular phone is placed at the cellular phone accommodating unit; a display element for showing a cellular phone display data or a car audio display data input from the car audio: and a display element driving unit for driving the display element to show the car audio display data if the control signal of showing the electrical io connection between the cellular phone and the car audio is input from the microcomputer or to show the cellular phone display data if the control signal of showing the electrical disconnection between the cellular phone and the car audio is input from the microcomputer.
  9. 9. A vehicle audio system for a cellular phone comprising a low frequency amplifier, an audio source, an external microphone and an amplifier for amplifying signals input from the external microphone; wherein the system further comprises an automatic signal selector for selecting and outputting audio signals transmitted from a cellular phone to the low frequency amplifier if the cellular phone is in use, or for outputting audio signals transmitted from the audio source to the low frequency amplifier if the cellular phone is not in use.
    26
GB9802139A 1997-11-18 1998-01-30 Vehicle audio system for cellular phone Expired - Fee Related GB2331428B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019970060902A KR100292022B1 (en) 1997-11-18 1997-11-18 Car audio with hands-free function
KR1019970060903A KR19990040501A (en) 1997-11-18 1997-11-18 Handfree combined car audio

Publications (3)

Publication Number Publication Date
GB9802139D0 GB9802139D0 (en) 1998-04-01
GB2331428A true GB2331428A (en) 1999-05-19
GB2331428B GB2331428B (en) 2000-05-10

Family

ID=26633180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9802139A Expired - Fee Related GB2331428B (en) 1997-11-18 1998-01-30 Vehicle audio system for cellular phone

Country Status (4)

Country Link
DE (1) DE29801085U1 (en)
FR (1) FR2771244A1 (en)
GB (1) GB2331428B (en)
IT (1) IT1298204B1 (en)

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WO2001063782A2 (en) * 2000-02-22 2001-08-30 Dale Malcolm Dutton Method and apparatus for use of a transceiver
GB2363937A (en) * 2000-06-21 2002-01-09 Charles Antrobus Vehicle sound system incorporating a mobile phone
GB2381160A (en) * 2001-10-19 2003-04-23 Sendo Int Ltd Digital or differential port for mobile in vehicle
EP1088705A3 (en) * 1999-09-30 2003-08-27 Siemens Aktiengesellschaft Support for a cellular phone in a vehicle
ITMI20101151A1 (en) * 2010-06-25 2011-12-26 Ambrosio Francesco D INSTALLATION FOR VEHICLE USED FOR THE TRANSPORT OF PERSONS AND / OR THINGS, PARTICULARLY FOR THE USE OF MULTIMEDIA CONTENT AND FOR MULTIMEDIA TELECOMMUNICATION

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WO2000010311A1 (en) * 1998-08-10 2000-02-24 Simplicia Technologies Inc. System enabling telephone communications through an audio equipment device

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WO1995020304A1 (en) * 1994-01-24 1995-07-27 S.A. C3Em (Conception Etude Entretien Electronique Et Mecanique) Device for automatically switching between the electroacoustic transducer(s) of a radio receiver and the audio-frequency output of a radiotelephone, and equipment provided therewith
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EP0483956A2 (en) * 1990-10-30 1992-05-06 Nokia Mobile Phones (U.K.) Limited Combined broadcast radio receiver and radio telephone
GB2264613A (en) * 1992-01-17 1993-09-01 Pioneer Electronic Corp Car telephone/entertainment system
US5537673A (en) * 1992-05-25 1996-07-16 Pioneer Electronic Corporation Car stereo having a removable panel
WO1995020304A1 (en) * 1994-01-24 1995-07-27 S.A. C3Em (Conception Etude Entretien Electronique Et Mecanique) Device for automatically switching between the electroacoustic transducer(s) of a radio receiver and the audio-frequency output of a radiotelephone, and equipment provided therewith
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EP1088705A3 (en) * 1999-09-30 2003-08-27 Siemens Aktiengesellschaft Support for a cellular phone in a vehicle
WO2001063782A2 (en) * 2000-02-22 2001-08-30 Dale Malcolm Dutton Method and apparatus for use of a transceiver
WO2001063889A1 (en) * 2000-02-22 2001-08-30 Dale Malcolm Dutton Method and apparatus for use of a transceiver
WO2001063782A3 (en) * 2000-02-22 2002-06-13 Dale Malcolm Dutton Method and apparatus for use of a transceiver
GB2363937A (en) * 2000-06-21 2002-01-09 Charles Antrobus Vehicle sound system incorporating a mobile phone
GB2381160A (en) * 2001-10-19 2003-04-23 Sendo Int Ltd Digital or differential port for mobile in vehicle
GB2381160B (en) * 2001-10-19 2006-06-28 Sendo Int Ltd Vehicle communication apparatus
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Also Published As

Publication number Publication date
GB9802139D0 (en) 1998-04-01
GB2331428B (en) 2000-05-10
DE29801085U1 (en) 1998-03-12
ITMI980136A1 (en) 1999-07-26
IT1298204B1 (en) 1999-12-20
FR2771244A1 (en) 1999-05-21

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Effective date: 20050130