GB2347817A

GB2347817A - Cordless earphone arrangement for a telephone

Info

Publication number: GB2347817A
Application number: GB9905529A
Authority: GB
Inventors: Bill Yang
Original assignee: Cotron Corp
Current assignee: Cotron Corp
Priority date: 1999-03-10
Filing date: 1999-03-10
Publication date: 2000-09-13
Anticipated expiration: 2019-03-10
Also published as: NL1011712A1; CA2265145C; ES2153771A1; CA2265145A1; SE9901263L; FI990785A0; ITMI990701A1; ZA993087B; ES2153771B1; GB9905529D0; SG89276A1; SE9901263D0; NL1011712C2; GB2347817B; IT1312241B1; FI990785A

Abstract

The system uses infrared or radio wave as medium for transmitting voice signal from a telephone to a receiver earphone worn by the user, and then uses a microphone to pick up voice messages from the user. Hence, hands-free telephone conversation is possible with either wired or mobile telephones.

Description

COMMUNICATION SYSTEM FOR TELEPidONE 13At'KGROUND OF THE INVENTION Field d oftnvention The present invention relates to a communication system for telephone. More particularly, the present invention relates to a communication system using infrared or radio wave as a medium for transmitting voice signal. The communication system also employs an earphone to transmit voice signal to the user's ear and a microphone to collect voice output from the user so that hands-free, telephone communication is possible.

Description of Related Art In today's society, communication equipment is indispensable to our daily life.

Through our telephone network, communication across great distances becomes possible and people around the world are pulled closer to each other than ever before.

Nowadavs. products for communication are developed at a fast pace. Besides bein iightweight and convenient to use newer generations of communication products can be used almost anywhere from inside an office or a household to outdoor area such as the street or inside a car. Norlllally wireless or cordless telephones are used within an office area or at home and mobile or cellular telephones are mainly used outdoors.

I-iowever. talkin throuh a mobile or cellular telephone while driving a car is verv dangerous. Statistics shews that many accidents occur when a driver is driving a car with one hand white holding a mobile or cellular telephone with the other. The reason is that talliin over the telephone causes great distraction. Sufficient distractions may rob the driver's concentration on the wheel and the road so that roadside accidents increase. Therefore. many countries are in the process of enacting laws forbidding drivers to talk over a handheld telephone while driving. One solution is to use hands-lree headset that contains an earphone and a microphone. However. using a headset with wires linking to a mobile or cellular telephone, for example. can still cause some problems. The wires from the headset may tangle with the steering wheel or the gear-shifting stick inside the car during driving. Hence, the earphone may be abruptly removed from the user's head, which leads to distractions that may affect road safety.

Similarly, a wireless telephone users also experiences the same type of inconveniences as a car driver when he or she is using a telephone in an office or at home. Because the users has to hold the handset with one hands, the user's hand may get tired after a period of use. In addition. if the user needs to use both hands to perform some other tasks, he or she may have to use his or her shoulder and neck to grip the handset. After using a wireless telephone in this fashion for some time, chronic neck pain may occur.

In light of the loregoing, there is a need to provide a communication system for telephone conversation that is capable of eliminating the inconveniences and problems found in conventional svstems.

SIJMMAR. Y OF THE INVENTION Accordingly, the purpose of the present invention is to provide a communication system ior telephone such that hands-free communication for wireless. wired, mobile or cellular telephone is possible.

To achieve these and other avantages and in accordance with the purpose of the invention, as embodied and broadly described herein, the invention provides an infrared communication system suitable for wireless mobile or cellular telephones that are used inside cars or indoors. The telephone communication system includes a microphone, a transmitter and a receiver earphone. The microphone is connected via a piece of cable to a wireless, a wired, a mobile or a cellular telephone unit for receiving a first voice signal and then delivering it to the wired/wireless/mobile/cellular telephone unit. The transmitter is also connected to the wired/wireless/mobile/cellular telephone unit for receiving a second voice signal from the lvired/wireless/mobile/cellular telephone unit and then converting the second voice signal into wireless signals. The receiver earphone comprises a receiver and an earphone. The receiver is used for receiving the wireless signals transmitted by the transmitter and then converting the signals into a third voice signal for the user to listen to.

The microphone of the aforementioned telephone communication system is connected by wiring to the mouthpiece circuit of the telephone. The microphone is in turn positions close to user's mouth so that sound emitted by the user can be easily received. The transmitter is electrically connected to the telephone speaker circuit.

Hence. the transmitter is ahle to convert the voice signal coming trom the telephone into wireless signats and then broadcast them away. Through the receiver/earphone system worn on user's head. thc user is able to pick up voice from the telephone. The receiver can actually be fixed in whatever pluce user found to be convenient. For exampte, the receiver can be placed near user's pocket, somewhere around the neck, in front of the chest, in tact any location where wireless signals can be easily picked up. Furthermore, wireless signals inc) ude both infrared wave and radio wave. Because voice signals coming from the tetephone unit is picked up by the user through an earphone, privacy of conversation can be maintained. In addition, through a transmitter-receiver earphone system. hands-free telephone communication is possible. Moreover. the only changes necessary for introducing the telephone communication system of this invention is to wire a microphone to the mouthpiece circuit and to install a unidirectional wireless transmitter onto the loudspeaker. Therefore, as soon as the user wears the receiver earphone. hand-free telephone conversation is immediately available at a small cost.

The telephone communication system, besides being useful for car drivers having a mobile. cellular or car telephone. can be applied to indoor wired telephone as well.

It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the invention as claimed.

BRIEL DESC'RIPT1ON OF THE DRAWINGS The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings iHustrate embodiments of the invention and. together with the description. serve to explain the principes of the invention. In the drawings.

Fig. 1A is a block diagram showing a schematic layout of a telephone communication system according to one preferred embodiment of this invention; Fig. 1B. 1C are block diagrams showing a schematic layout of a telephone communication system according to another preferred embodiment of this invention ; Fig. 2 is a diagram showing the components of a telephone communication system set up inside a car according to this invention; and Fig. 3 is a diagram showing the components of a telephone communication system set up inside an office according to this invention.

DESCRII'TION OF THE PREFERRED EMBODIMENTS Reference now be made in detail to the present preferred embodiments of the invention, examptes of which are illustrated in the accompanying drawings. Wherever possible. the same reference numbers are used in the drawings and the description to refer to the same or tike parts.

Fig. IA is a block diagram showing a schematic layout of the telephone communication system according to one preferred embodiment of this invention.

As shown in Fig. 1a, the telephone communication system 10 of this invention includes a microphonc 12. a transmitter) 6 and a receiver earphone 18. The microphone 12 and the transmitter 16 are connected to a telephone 14. The telephone 14 can be a mobile telephone, a cellular telephone, a car telephone. an indoor wired telephone or an indoor wireless telephonc. The microphone 12 is used 1or receivin a first voice signal 22 from a user 20. and then the first voice signal 22 is passed on to the telephone 14 throuoh a cable 24. Subsequently, the telephone 14 sends out the first voice signa ! 22 to a telephone network. The transmitter 16 is used for receiving incoming voice signa) 26 (a second voice signal) from the telephone network via the telephone 14. Atter converting the second voice signal 26 into wireless signals 28 in the infrared or radio range, the transmitter 16 broadcasts the signals 28 out. The receiver earphone 18 includes receiver 30 and an earphone 32. The receiver 30 is responsible for receiving the wireless signals 28 from the transmitter 16, and then converting the wireless signal 28 into a voice signal 34 (a third voice signal). Finally, through the earphone 32. the user 20 is able to listen to the voice from the other party on the other side of the telephone network. Furthermore, the receiver 30 can include an automatic shut-off circuit 31. When the receiver 30 does not pick up any signal for a pre-determined period. power to the receiver earphone 18 will automatically be cut so that power consumption is minimiced. When this invention is applied, the user 20 usually wears the earphone 18. Therefore. the telephone ! 4 preferably includes an automatic answer circuit 36. When the telephone) 4 rings for a pre-determined period, for exnyle. threc times or lhree seconds. the autonratic answer circuit 36 will automatically pick up the call. Then, the user 20 can answer the caller through the telephone communication system 10.

. 1B is a btock diagram showing a schematic iayout of the telephone communication system according to another preferred emboditnent of this invention.

As shown in Fig.) B, ahernativety, the transmitter 16 also can be built in the telephone 14. Therefore, the transmitter 16 can be powered by the power supply of the telephone 14, for example, batteries.

Fig. 1C is a block diagram showing a schematic layout of the telephone communication system according to another preferred embodiment of this invention.

Referring to Fig. ! C, even the telephone 14 has a built-in transmitter 16, the telephone 14 is compatible with a conventional headset 40 for the telephone. A conventional headset 40 includes a microphone 42 and an earphone 44. When the conventional headset 40 is connected to the telephone 14 through wires 46, 48, the function of the built-in transmitter 16 is disabled. For example, a cellular telephone 14 with a built-in transmitter 16 has a connector which connects the telephone communication system and the telephone 14. Being Similar to a conventional earphone/microphone connector, the connector consists ouf a socket and a plug, which has three electrodes respectively : one for microphone, another for earphone and the other for ground. For the case in Fig.

1B, the microphone electrode and the ground electrode of the plug are respectively coupled to the microphone e) ectrode and the ground electrode of the socket.

Meanwhile. the earphone electrode is lloating so that the built-in transmitter 16 is enabled. For the case in Fig. IC the three electrodes of the plug are respectively coupled to the electrodes of the socket. The connector will detect that the earphone 44 is engagez, and then disable the built-in transmitter 16.

AlthouLh radio liequencv can serve as a medium for carrying out voice communication, infrared wave has severat advantages over radio frequency especiaiiy for short distance transmission. Firstly, radio frequency equipment are generany more costly tu build. Secondl) only one-channel. mono-infrared light rays are required in this invention. One-channel, mono-infrared light rays are even cheaper to produce than two-channel infrared light rays. Thirdly. a targe number of househotd or office appliances are electronically operated using radio wave frequencies. Hence, transmitted telephone signa) s are likely to be interfered, thereby lowering telephone voice quality. Alternatively. the electronic appliances may mal-function due to interference from the telephone. In addition, many medical researchers have pointed out the potential danger of radio frequency emission to people's health. Therefore, infrared wave is less interfered with by surrounding noises and less hazardous to people's health compare with radio wave. However, it is by no means a restriction to the type of communication medium. In fact, anyone familiar with electronic communication can still set up the same telephone communication system using radio frequency as well.

An example is given below to illustrate how the telephone communication system can be applied in practice. Fig. 2 is a diagram showing the components of a telephone communication system set up inside a car according to this invention. In Fig.

2, a car driver 40 is seated inside a car 42. In general, a mobile or cellular telephone 44 (or car telephone) is usually placed on the dashboard 48 in front of the driver's seat 46 or to either side of the driver's scat 46. Some types of car may even have a mobile or cellular telephone stand (not shown in the figure) fixed to the dashboard 48 in front of the driver's seat. The microphone 12 is best placed somewhere near the instrument panel D or above the dashboard 48 or the sun visor in front of the driver's seat. A piece of wire 24 can be used to connect the microphone 12 and the mobile or cellular te) ephone 44. This arrangement makes it easier for the microphone 12 to pick up voice signals from the driver 40. The transmitter 16 is best placed somewhere near the instrument panel 50 or the sun visor (not shown in Fig. 2) for ease of interception by the receiver earphone 18. A wire 56 can be used to connect the transmitter 16 and the mobile or cellular teleEhone 44. Batteries or the batteries of the mobile or cellular telephone 44 can be use to power the emitter 16. Alternatively. power can be drawn from the car battery by convection to a cigarette lighter 54 through a power cord 52.

When the mobile or cellular telephone 44 has an incoming call, voice of the person on the other end is convened into wireless signals such as infrared or radio waves and then delivered to the receiver earphone 18 by the transmitter 16. The driver 40, who is wearing the receiver earphone 18, can listen to the voice of the other party without the need to grab the handset of the telephone. The receiver earphone 18 includes a receiver (not shown) for picking up the wireless signals. The receiver can be directly hidden inside the receiver earphone 18. or alternatively. placed inside user's pocket. attached to user's collar or user's clothes in front of the chest. Furthermore, the earphone 18 can be a headset worn on user's head or simply an earplug that can plug into the user's ear. Uf course, by means of the microphone 12. the other party can receive voice signals from the driver 4 () as well. In general, the microphone 12 can be installcd anywhere inside me car. However, because drivers 40 will usually put the mobile or cellular telephone near them. the microphone 12 is preferably placed near the driver 40 as well. Furthcrmore. since noise interference is low in inside the car 42, the microphone can le connected to the mobile or cellular telephone 44 using a piece of wire to obtain high-quality voice signal transmission. By transmitting mono wireless signals to the receiver carphone 18. hands-free telephone communication is possible.

Hence. the telephone communication system of this invention is able to improve driving safety, maintain hearing privacy and tower equipment cost at the same time.

Fig 3 is a diagram showing the components of a telephone communication system set up inside an office according to this invention. As shown in Fig. 3, when the user 60 is engagez in computer-related work (for example, using the keyboard 62). his or her hands are not free to hold the handset of a telephone. If there is an indoor wired telephone 64. the microphone 12a of this invention can be connected to the mouthpiece of a handset 68 through a connector 66. The microphone ! 2a can be positioned at a convenient location, for example, above the monitor screen 70 of the computer, edge of the desk or simply the top of the desk. In order to amplify the voice of the user 60. an amplifier 72 may be added to the connector 66. The infrared transmitter 16a can be connected to the earpiece of the handset 68 through a second connector 74. The infrared transmitter 16a can be similarly positioned above the monitor screen 70. Similarly, if there is an indoor wireless telephone 76. the microphone 2b of this invention can be connected to the mouthpiece of a handset 76 through a third connector 78. The microphone 12a can be positioned at a convenient location. for example, above an office table 80. In order to improve the voice quality, an amplifier 82 may be added to the connector 78 for amplifying the voice of the user 60. The infrared transmitter 16b can be connected to the earpiece of the handset 76 through a fourth connector 84. The infrared transmitter 16b can be similarly positioned on a computer desk 8 (). The connectors 66,74.78 and 84 can be the device as disclosed in Taiwan Patent No. 0908) 4 (or U. S. Patent No. 5,850, 439).

Alternatimly. any telephonc convertcr or conjunction box availablc in the market can also be used for voice connection.

When the user 60 hears an incoming telephone call, the user 60 can pick up the telephone call and listons to the voice from the other party through the receiver earphone 18. At the same time. voice from the user 60 can be delivered to the telephone through microphone ! 2a or 12b. Hence, there is no need to hold the handset with a hand. Furthernuore, since no wires are connected to the headset, users 60 will not be tangled by telephone wires. In other words, the user 60 is able to work with both hands while attending to an incoming telephone call. Similarly, the receiver earphone 18 has a receiver (not shown) for receiving wireless signals. The receiver can be directly hidden inside the receiver earphone 18, or alternatively, placed inside user's pocket, attached to user's collar or user's clothes in front of the chest.

Furthermore, the earphone 18 can be a headset worn on user's head or simply an earplug that can plug into the user's ear. By means of the microphone 12a or 12b, the other party can receive voice signals from the user 60. In general, the telephone 64 and the handset 74 will be place somewhere near the user 60. Since there will probably be very little noise interference indoor, high-quality sound can still be obtained by passiez the voice signa) through the microphone 12a or 12b to the telephone 64 or the handset 76 via a piece of wire. By transmitting mono wiretess signais to the receiver earphone 18. hands-free telephone communication is possible. Hence, the telephone communication system of this invention is able to provide hands-free telephone communication and maintain hearing privacy at the same time with just minor increase in the cost of equipment.

In addition. the receiver can include an automatic sllut-o f circuit (label 31 in Fig.

I). When the receiver does not pick up any signal for a pre-determined period, power to the receiver will aummatically be cut so that power consumption is minimized.

In summary. the technique of hands-free telephone communication system is at present a trend in telephone appHcation. Besides caring for the driver's safety on the road, the telephone-using consumer public also requires the system to be convenient in use. enough privacy and low cost. In order to cater for all these requirements. a number of considerations regarding the design of the system must be made.

Conventionally. the audio system within the car is utilized by the car telephone.

Alternatively, some other external speaker systems are connected for broadcasting telephone conversation. Although these conventional systems allow hands-free conversation, privacy cannot be achieved. Furthermore, although most mobile or cellular telephone has external socket for plugging to an external earphone/microphone system so that privacy is achieved, the wiring connection can endanger driving or tangle up common users. If one is not careful. the earphone/microphone system might cause great discomfort to the ear. In some cases, the headset might even be torn away. In addition, even if conventional wireless earphone and microphone are used to boost operational convenience and privacy, equipment cost will increase considerably. For example. a set of stereo wireless device, due to its intrinsic complexity, no matter if infrared or radio wave is used as a medium, the cost is almost equal to and sometimes higher than the price of a mobile or cellular telephone. Therefore, consumers are unlikely accept the product.

The inventor, recognizing such prob ! ems, provides a solution from a fresh new consideration. The inventor observes that most people that require hands-free tetephone conversation are deivers or some office peoples (for example, receptionists or salespcoole). Thcir communality lies in that both hands must be frec either to drive a car or to take down notes and important information. Moreover. they are most likely to sit in a fixed location not far away from the telephone. In addition, their conversation needs some degree of privacy because some information they rathered may be confidential such as price quotation or other personal information. Based on these observations. the concept of having a telephone communication system that uses a wireless earphone anci wired microphone is established. The new telephone communication system is able not only to provide the convenience and privacy of a hands-free telephone. cost of equipment is low as well.

In other words. the telephone communication system of this invention is not only convenient to use. but privacy is also maintained. Moreover, cost of equipment is kept to a minimum. l'o provide operational convenience, a wireless earphone and a fixed microphone is used. Therefore, a user can enjoy the comfort of hands-free conversation white moving about at the same time. Because the speaker is attached to the earphone, privacy of talks by the other party can be maintained. Furthermore, the combination of a wirekss earphone and a wired microphone takes into consideration cost of the equipment. Since the user is unlikely to be far away from the telephone. high-quality sound can still he obtained even when a wired microphone is used. by using mono transmission for the transmitter and the receiver, circuit complexity is greatly reduced. Therefore, the telephone communication system in this invention has the advantages of being able to provide user convenience, privacy and low cost.

It be appearent to those skilled in the art that various modifications and variations can he madc to the structure of the present invention without departing from the scope or spirit of the invention. In view of the foregoing. it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims and their equivalents.

Claims

WHAT IS CLAIMED IS:

1. A communication system for a mobile or a cellular telephone to be installed insidea car. comprising ; a microphone connected to the mobile or cellular telephone for receiving a first voice signa) from a user and then transmitting the first voice signat to the mobile or cellular telephone : a transmitter connected to the mobile or cellular telephone for receiving a second voice sibnal from the telephone and then converting the second voice signal into a wireless signal so that the wireless signal is broadcast ; and a receiver earphone for picking up the wireless signal from the transmitter and then converting the wireless signals into a third voice signal for hearing by the user.

2. The telephone communication system of claim 1, wherein the microphone is erected near a instrument panel of the car in front of the driver's seat.

3. The telephonc communication system of claim 1, wherein the transmitter is erected near a instrument panel of the car in front of the driver's seat.

4. The telephone communication system of claim 1, wherein the transmitter is powered by a battery.

5. The telephone communication system of claim 1, wherein the transmitter is powered by a batter) of tilc mobile or the cellular telephone.

6. The te) ephonc communication system of claim 1, wherein the transmitter is powered by a car battery.

7. The telephone communication system of claim 6, wherein the transmitter further includes a power cable connecting the transmitter to the cigarette tighter of the car.

S. The telephone communication system of claim 1, wherein the receiver earphone is composed of a receiver and an earphone connected to the receiver.

9. The telephone communication system of claim 8. wherein the receiver further includes an automatic shut-off circuit.

In The telephone communication system of claim 1, wherein the wireless signal includes infrared wave.

1 1. The telephonc communication system of claim 1. wherein the wireless signal includes radio wave.

12. The telephone communication system oui'claim 1, wherein the mobile or the cellular telephone further includes an automatic answer circuit.

) 3. An indoor communication system for telephone to be used together with an indoor wire-connected telephone, comprising : a microphone connected to the indoor wire-connected telephone for receiving a first voice signal from a user and then transmitting the first voice signal to the indoor wire-connected telephone ; a transmitter connected to the indoor wire-connected telephone for receiving a second voice signal from the indoor wire-connected telephone and then converting the second voice signal into a wireless signal so that the wireless signal is broadcast ; and a receiver earphone for picking up the wirekss signa) from the transmitter and then converting the wire) ess signal into a third voice signal for hearing by the user.

14. The telephone communication system of claim 13, wherein the receiver earphone is composed of a receiver and an earphone connected to the receiver.

1 5. The telephlm communication system of claim 14. wherein the receiver further includes an automatic shut-off circuit.

16. The telephone communication system of claim 13, wherein the microphone is connected to the indoor wire-connected telephone through a connector.

17. The telephone communication system of claim 16, wherein the connector further includes an amplifier for amplifying the first voice signals.

18. The telephone communication system of claim 13, wherein the transmitter is connected to the indoor wire-connected telephone through a connector.

19. The telephem communication system of claim 3. wherein the wireless signal includes infrared wave.

20. The telephone communication system of claim 13. wherein the wireless signal includes radio wave.

21. The telephone communication system of claim 13, wherein the in-door wireconnected telephone further includes an automatic answer circuit.

22. An indoor communication system for telephone to be used together with an indoor wireless telephone, comprising : a microphone connected to the indoor wireless telephone for receiving a first voice signal from a user and then transmitting the first voice signal to the indoor wireless telephone ; a transmitter connected to the indoor wireless telephone for receiving a second voice signal from the indoor wireless telephone and then converting the second voice signal into a wireless signa) so that the wireless signal is broadcast and a receiver earphone for picking up the wire) ess signa) from the transmitter and then converting the wndess signa) into a third voice signal for hearing by the user.

23. The telephone communication system of claim 22. wherein the receiver earphone is composed of a receiver and an earphone connected to the receiver.

24. The telephone communication system of claim 23, wherein the receiver further incjudes an automatic shut-off circuit.

25. The telephone communication system of claim 22, wherein the microphone is connected to the indoor wireless telephone through a connector.

26. The telephone communication system of claim 25, wherein the connector further includes an amplifier for amplifying the first voice signal.

27. The tetephone communication system of claim 22, wherein the transmitter is connected to the indoor wiretess tetephone through a connector.

28. The telephone communication system of claim 22. wherein the wireless signal includes iotfrarecl wave.

29. The telephone communication system of claim 22, wherein the wireless signal includes radio wave.

30. A communication system, comprising : a telephone having a built-in transmitter for receiving a first voice signal from the telephone and then converting the first voice signal into a wireless signal so that the wireless signal is broadcast. a microphone connected to the telephone for receiving a second voice signal from a user and then transmitting the second voice signal to the mobile or cellular telephone; and a receivcr earphone for picking up the wireless signal from the built-in transmitter of the tetephone and then converting the wireless signal into a third voice signal for hearing by the user.

31. The communication system of claim 30, wherein the telephone is selected form the group consisting of the wired telephone, the wireless telephone, the mobile tetephone and the cellular telephone.

32. The communication system of claim 30, wherein the receiver earphone is composed of a receiver and an earphone connected to the receiver. i. The ommunication system of claim 32, wherein the receiver further includes an automatic shut-off circuit.

34. The communication system of claim 30. wherein the telephone further includes an automatic answer circuit.

35. The communication system ofctaim 30, wherein the wireless signal includes infrared wave.

36. The communication system of claim 30, wherein the wireless signal includes radio wave.

Amendments to the claims have been filed as follows WHAT IS CLAIMED IS:

1. A communication system for a telephone, comprising: a microphone connected to the telephone for receiving a voice signal from a user and then transmitting the voice signal to the telephone: a transmitter connected to the telephone for receiving another voice signal from the telephone, converting said another voice signal into a wireless signal based on infra red waves and broadcasting the wireless signal; and a receiver earphone for picking up the wireless signal from the transmitter and then converting the wireless signals into a further voice signal for hearing by the user.

2. The telephone communication system of claim 1 wherein the telephone is a mobile or cellular telephone installed in a car.

3. The telephone communication system of claim 2, wherein the microphone is erected near the instrument panel of the car in front of the driver's seat.

4. The telephone communication system of claim 2 or 3, wherein the transmitter is erected near the instrument panel of the car in front of the driver's seat.

5. The telephone communication system of claim 2,3 or 4, wherein the transmitter is powered by a battery.

6. The telephone communication system of claim 5, wherein the battery is the battery of the mobile or the cellular telephone.

7. The telephone communication system of claim 5, wherein the battery is the car battery.

8. The telephone communication system of claim 7, wherein the transmitter further includes a power cable connecting the transmitter to the cigarette lighter of the car.

9. The telephone communication system of claim 1, wherein the telephone is an indoor wire-connected telephone.

10. The telephone communication system of claim 9, wherein the microphone is connected to the indoor wire-connected telephone through a connector.

11. The telephone communication system of claim 10, wherein the connector further includes an amplifier for amplifying the voice signal from the user.

12. The telephone communication system of claim 9,10 or 11, wherein the transmitter is connected to the indoor wire-connected telephone through a connector.

13. The telephone communication system of claim 1, wherein the telephone is an indoor wireless telephone.

14. The telephone communication system of claim 13, wherein the microphone is connected to the indoor wireless telephone through a connector.

15. The telephone communication system of claim 14, wherein the connector further includes an amplifier for amplifying the voice signal from the user.

16. The telephone communication system of claim 13 or 14, wherein the transmitter is connected to the indoor wireless telephone through a connector.

17. The telephone communication system as claimed in any preceding claim wherein the transmitter is a built-in transmitter incorporated in the telephone.

18. The telephone communication system of any preceding claim wherein the receiver earphone is composed of a receiver and an earphone connected to the receiver.

19. The telephone communication system of claim 18, wherein the receiver further includes an automatic shut-off circuit.

20. The telephone communication system of any preceding claim wherein the telephone further includes an automatic answer circuit.

21. The telephone communication system substantially as hereinbefore described with reference to and as illustrated in Figures 1A, 1B, 1C, 2 or 3 of the accompanying drawings.