CA2265145C - Communication system for telephone - Google Patents
Communication system for telephone Download PDFInfo
- Publication number
- CA2265145C CA2265145C CA002265145A CA2265145A CA2265145C CA 2265145 C CA2265145 C CA 2265145C CA 002265145 A CA002265145 A CA 002265145A CA 2265145 A CA2265145 A CA 2265145A CA 2265145 C CA2265145 C CA 2265145C
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- CA
- Canada
- Prior art keywords
- telephone
- communication system
- receiver
- transmitter
- wireless
- 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.)
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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
- H04M1/6091—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle by interfacing with the vehicle audio system including a wireless interface
-
- 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
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Set Structure (AREA)
- Telephone Function (AREA)
- Optical Communication System (AREA)
- Telephonic Communication Services (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
Abstract
A communication system for telephone. The system uses infrared or radio wave as a 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.
Hence, hands-free telephone conversation is possible.
Description
1=ILE: 3~t34.RTF
COMMtJNICA~fION SYSTEM FOR TELEPI-LONE
13AC'KC~ROLJND OF THE INVENTION
1~ field oh Invention a 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 transmittin b 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.
Nowadays. products i-or communication are developed at a fast pace. Besides being lightweight 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. Normally, wireless or cordless telephones are used within an office area or at home and mobile or cellular telephones are mainly used outdoors.
FILE: 3~4,~.RTF
1-IoWever. tall:in~_ through a mobile or cellular telephone while driving a car is Vel'y dtlil'~LI'OIIS. St~IIISIICS S110WS 11)fll Illally aCCldeIltS OCCLI1' Wllell a Cll'lVe1' is Cll'IVlng a car with one hand while holding a mobile or cellular telephone with the other.
The reason is that tall:in~~ over the telel)hone causes great distraction.
Sufticient 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-free 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-shitting 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 l a Il1CO11Vt:I11e11CeS 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 lnay have co use his or her shoulder and heck to grip the handset. After using a wireless telephone in this fashion for some time, chronic 2o neck pain may occur.
In light of the fore~~oing, there is a need to provide a conllnunication system for telephone conversation that is capable of eliminating the lIICOIIVenlellCeS
alld prOblellls tOLllld 111 COllVelltlOllal ~VSte111S.
COMMtJNICA~fION SYSTEM FOR TELEPI-LONE
13AC'KC~ROLJND OF THE INVENTION
1~ field oh Invention a 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 transmittin b 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.
Nowadays. products i-or communication are developed at a fast pace. Besides being lightweight 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. Normally, wireless or cordless telephones are used within an office area or at home and mobile or cellular telephones are mainly used outdoors.
FILE: 3~4,~.RTF
1-IoWever. tall:in~_ through a mobile or cellular telephone while driving a car is Vel'y dtlil'~LI'OIIS. St~IIISIICS S110WS 11)fll Illally aCCldeIltS OCCLI1' Wllell a Cll'lVe1' is Cll'IVlng a car with one hand while holding a mobile or cellular telephone with the other.
The reason is that tall:in~~ over the telel)hone causes great distraction.
Sufticient 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-free 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-shitting 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 l a Il1CO11Vt:I11e11CeS 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 lnay have co use his or her shoulder and heck to grip the handset. After using a wireless telephone in this fashion for some time, chronic 2o neck pain may occur.
In light of the fore~~oing, there is a need to provide a conllnunication system for telephone conversation that is capable of eliminating the lIICOIIVenlellCeS
alld prOblellls tOLllld 111 COllVelltlOllal ~VSte111S.
FILE: .,.as~4.RTF
SUMMARY OF TI-IE INVCNTION
,Accordingly. the purpose of the present invention is to provide a communication system for telephone such that hands-free communication for wireless, wired, mobile or cellular telephone is possible.
'I_o achiev a these and other advantages 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. 'rhe telephone communication system includes a microphone. a transmitter and a receiver earphone. The microphone is connected via a piece of cable to 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 wired/wireless/mobile/cellular telephone unit and then converting tlm second voice signal into wireless signals. The receiver earphone comprises a receiver and an earphone. The receiver is used for receiving the wireless signals tl'allSillllted by the transmitter and then converting the signals into a third voice signal for the user to listen to.
The microphone oi~ the aforementioned telephone communication system is connected by wiring to the mouthpiece circuit of the telephone. The microphone is in ~o 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 transmits r is able to convert the voice signal coming from the telephone into FILE: 3dsd.RTF
wireless si~~nals and then broadcast them away. Through the receiver/earphone system worn on user's head. the user is able to pick up voice from the telephone. The receiver can actually he fixed in whatever place user found to be convenient. For example, 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 include both infrared wave and radio wave. Because voice signals comin~~ ti-om the telephone unit is picked up by the user tlu-ough an earphone, privacy of conversation can he maintained. Ia addition, through a transmitter-receiver earphone system. halldS-flee telepll(lile Co117111L111(CltlOn lS possible. Moreover, the only changes to necessary for introducin~~ the telephone communication system of this invention is to wire a microphone to tl~e 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 he 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.
BRIE:I~ DESCRIPTION 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 FfLE: 3~434.RTF
drawin~~s illustrate embodiments o1~ the Illvelltloll alld, together with the description.
serve to explain the principles of the invention. In the drawings.
Fig. l A is a hlo cl: diagram showing a schematic layout of a telephone COI11l11llnlCatloll sfStelll uccordin~, to one preferred elllbOdlnlellt of this invention;
Fi'~. 1 B. 1 C' arc hlocl: diagrams showing a schematic layout of a telephone communication system according to another preferred elnbodllllellt of this invention;
Fig. 2 is a diagram showing the components of a telephone communication system set up inside a cur according to this invention; alld Fig. 3 is a diagram showing the components of a telephone communication I o system set up inside an office according to this invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Reference now he made in detail to the present preferred embodiments of the invention. examples of which are illustrated in the aCC011lpally117g dl'aVVlngs. Wherever possible. the same reference numbers are used in the drawings and the description to refer to the same or like parts.
Ivig. lA is a hlocl: diagram showing a schematic layout of the telephone communication system according to one preferred embodiment of this invention.
Fll.l:: s:l:>-4.RT~
As shown in Fip,. 1 A, the telvphonc communication system 10 01~ this inv ention includes a microphone 12, a transmitter 16 and a receiver earphone 18. The microphone 12 and the transmitter 16 are connected to a telephone 14. The telephone 14 can he a mobile telephone, a cellular telephone, a car telephone. an indoor wired > telephone or an indoor wireless telephone. The microphone 12 is used for receiving a first voice signal 22 li~om a user 20, and then the first voice signal 22 is passed on to the telephone 14 through a cable 24. Subsequently, the telephone 14 sends out the first voice signal 22 to a telephone network. The transmitter 16 is used for receiving I11C0171111~~ voice signal 26 (a second voice: signal) fii-om the telephone network via the telephone 14. Ahter 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 receivin'' 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. lower to the receiver earphone 18 will automatically be cut so that power consumption is minimised. When this invention is applied, the user ?o usually wears the earphone 18. fl'herefore, the telephonel4 preferably includes an automatic answer circuit s6. When the telephone 14 rings for a pre-determined period, ie>r example. three tines or three seconds, the automatic answer circuit >6 will automatically pick up the call. Then, the user 20 can answer the caller through the telephone communication system 10.
FILE: 3434.RTF
Fi;~. 1 B is a blocl: diagram showily a schematic layout of the telephone Conlillllllleatloll s~'~tl'.111 ae(a)i'dlilg Lo ailothel' preferred e11111odlillellt Of thlS 111Velltloll.
As shown in Fig. 1 B, alternatively, the transmitter 16 also can be built ill the telephone 14. ~hherefore, the transmitter 1 (. can be powered by the towel' supply of the telephone l 4. for example. batteries.
Ivi'~. I C is a block diagram showing a schematic layout of the telephone COI1ll11LI111Cat1o11 sySlClll accordin~~ to allothel' preferl'ed embodiment of this invention.
Referring to Fig. 1 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 or 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 of 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.
1 B, the microphone electrode and the grotnld electrode of~ the plug are respectively coupled to the microph(>ne electrode and the ground electrode of the socket.
Meanwhile. the earphone electrode is floating so that the built-in transmitter 16 is ~u enabled. For the case in Fig. 1 C, the three electrodes of the plug are respectively coupled to the electrodes of~the socket. lfhe connector will detect that the earphone 44 is engaged, and then disable the built-in transmitter 16.
(=I I,t:: .>-t ;-t.RTh Although radio fi~e~luenc:v can serve as a medium for carryin;~ out voice communication. inii-arcd wave has several advantages over radio Ii~equency especially for short distance transmission. Firstly, radio frequency equipment are generally more costly to build. Secondly. only one-channel. mono-inti~areci light rays are required in this invention. <)ne-cll,mnel. mono-ini~rared light rays are even cheaper to produce than W ~o-channel infrared light rays. Thirdly, a large number of household or office appliances are electronically operated using radio wave frequencies. Hence.
transmitted telephone si!~nals are likely to be interfered, thereby lowering telephone voice qualit~~. Alternatively. the electronic appliances may mal-function due to o> interference from the telephone. I11 addltlon, 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 peoples health compared with radio wave. However, it is by no means a restriction to the type of Co111111tlllleatloll Illedlull7. In fact, anyone familiar with electronic ~ > C01711111I111Cat101'1 Call stl Il set up the Satlle telephone COI111nu111Catloll SyStelll lISll7g 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.
~0 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 4G or to either side of the driver's seat 46. Some types of car may even have a mobile or cellular telephone stand (not shown in the tigure) fixed to the dashboard 48 in front of the driver's seat. The microphone 12 is best placed somewhere near the instrument FILf:: ;4s4.RTF
panel >0 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 correct the microphone 12 anti the mobile or cellular telephone 44. ~fhls al'1"lllgellll'.lll makes it easier for the microphone 12 to pick up voice signals from the driver 4(). The transmitter 16 is best placed somewhere near the s instrument panel 5() or tlm sun visor (not shOWll 111 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 telephone 44. ~3atteries or the batteries of the mobile or cellular telephone 44 can be used to power the en sitter 16. Alternatively, power can be drawn from the car battery by connection to a cigarette lighter 54 through a power cord 52.
When the nubile or cellular telephone 44 has an incoming call, voice of the person on the other end is converted 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 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 users collar or user's clothes in front of the chest.
Furthermore, the earphone I 8 can he a headset worn on user's head or simply an earplug that can plug into the user's ear. ()f course, by means of the microphone 12, the other party can 2o receive voice signals tiwm the driver 40 as well. In general, the microphone 12 can be installed anywhere inside the car. I-lowever, because drivers 40 will usually put the nloblle cll- cellular telehltone near them. the microphone 12 is preferably placed near the driver 40 as well. Furthermore, since noise interference is low in inside the car 42, the microphone can be connected to the mobile or cellular telephone 44 using a piece of I=ILf~: 34_,4.RTF
wire to obtain high-quality voic:c signal transmission. I3y transmitting mono wireless signals to the receiver earphone 18. hands-free telephone communication is possible.
Hence. the telephone communication system of this invention is able to improve driving sat-ety. maintain I~carin;~ privacy and lower equipment cost at .the same time.
s I~i'~. 3 is a diagram showin~~ the components of a telephone communication system set up inside an ui~fice according to this invention. As shown in Fig.
3. when the user 60 is en~~a~~ed in computer-related wol°k (for example. using the Keyboard 62).
hls OI' her hallds are not li~ee 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 I o 1110L1thpleCe Of a handset 68 through a connector 66. The microphone 12a can be positioned at a convenient location, for example, above the monitor screen 70 of the computer, edge of the desk or simple 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 I, connector 74. The inti~ared transmitter 16a can be similarly positioned above the monitor screen 70. Similarly, if there is an indoor wireless telephone 76. the microphone 12h of thls lllvent1011 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, ?0 an amplifier 82 may be added to the connector 78 for amplifying the voice of the user 60. ~Ihc infrared transmitter 16h can be connected to the earpiece of the handset 76 through a fourth conocctor 84. ~hhe inti~ared transmitter 16b can be similarly positioned on a computer desk 8(f. lhhe connectors 66, 74. 78 and 84 can be the device as disclosed in Taiwan Patent No. 090814 (or U.S. Patent No. 5,850,439).
FILE: 3434.RTF
Alternatimly. any telephone converter or conjunction box available 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 listens 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 12a or 12b. Hence, there is no need to hold the handset with a hand. Furthermore, 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 to 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 ~ 5 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 he very little noise interference indoor, high-quality sound can still be obtained by passin<~= the voice signal through the microphone 12a or 12b to the telephone 64 or the handset 76 via a piece of wire. E3y transmitting mono wireless signals to the ~o receiver eaphone 18, hands-free telephone communication is possible. Hence, the telephone communication system of this invention is able to provide hands-tree telephone COII1111u111Catl(111 and maintain hearing privacy at the same time with just minor increase in the cost of equipment.
I=ILI=,: sa3a.RTl=
In addition. the receiver Call Include an automatic shut-off circuit (label 31 in Fig.
1 ). When the receiver does not pick up any signal for a pre-determined period, power to the receiver will autonlatlcally be Cut so that pOWer COnSLllTlptioll IS
11111111111Zed.
111 Sullllllal'~', the teC11111CIUe Ol 112111CIS-~reC telephone CO111n1tII11Cati011 Sy'Slelll 1S at pCeSent a lrelld 111 telepllolle appllC1t1011. BeSIdeS Cal'lllg l01' the dl'IVeI'~S Saf2ly Oll the road, the telephone-usin~~ consumer public also requires the system to be convenient in use, enou~~h 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.
I o 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 I > up CO111111011 USeI'S. If one is not carefill, the earphone/microphone system might cause great discomfort to the ear. In some cases, the headset might even be torn away. In addition. Cven if Conventional wireless earphone and microphone are used to boost operational COIIVeIIIeIICt' and privac~~. equipment cost will increase considerably. For example. a set of stereo wireless device, due to its intrinsic complexity, no matter if 3o infrared or radio wave is used as a medium, the cost is almost equal to and sometimes higher than the price oi~ a mobile or cellular telephone. Therefor, consumers are unlikely accept the product.
I=I I~I~: 3-! ;-t.RTF
~f~he inventor, rcco~~nizin~~ such problems, provides a solution from a fresh new Consldel'at1011. The Ill\'ell to l' observes that IIIOSt people that require hands-free telephone conversation are drivers or some oftice peoples (for example, receptionists or salespeople). ~h~ir commonality lies in that both hands must be free either to drive a car or to take down notes and important Illfol'lllatlOn. Moreover, they are most likely to sit in a tied location not far away f~ron~ the telephone. In addition.
their conversation needs some de~~ree of privacy because some information they gathered 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 to wireless earphone and wired microphone is established. The new telephone communication system is able not only to provide the convenience and privacy of a hands-tree 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 I; kept to a minimum. ~l~u provide operational convenience, a wireless earphone and a fixed microphone is used. Therefore, a user can enjoy the comfort of hands-free conversation while moving about at the same time. Because the speaker is attached to the earphone, privacy ol~ tally by the other party can be maintained.
Furthermore, the combination of a wireless earphone and a wired microphone takes into consideration 'o cost of the equipment. Since the User is unlikely to be far away from the telephone, hlgh-qllallLy sOtlnd 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 leas the advantages of being able to provide user convenience, privacy and low cost.
FILE: s~4;~t.RTF
ft be apparent to those skilled in the art that various nu~difications and variations can be made to the structure: of the present invention without departin g from the scope or spirit oh tl~o invention. (n 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 ii,l(owing claims and their equivalents.
SUMMARY OF TI-IE INVCNTION
,Accordingly. the purpose of the present invention is to provide a communication system for telephone such that hands-free communication for wireless, wired, mobile or cellular telephone is possible.
'I_o achiev a these and other advantages 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. 'rhe telephone communication system includes a microphone. a transmitter and a receiver earphone. The microphone is connected via a piece of cable to 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 wired/wireless/mobile/cellular telephone unit and then converting tlm second voice signal into wireless signals. The receiver earphone comprises a receiver and an earphone. The receiver is used for receiving the wireless signals tl'allSillllted by the transmitter and then converting the signals into a third voice signal for the user to listen to.
The microphone oi~ the aforementioned telephone communication system is connected by wiring to the mouthpiece circuit of the telephone. The microphone is in ~o 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 transmits r is able to convert the voice signal coming from the telephone into FILE: 3dsd.RTF
wireless si~~nals and then broadcast them away. Through the receiver/earphone system worn on user's head. the user is able to pick up voice from the telephone. The receiver can actually he fixed in whatever place user found to be convenient. For example, 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 include both infrared wave and radio wave. Because voice signals comin~~ ti-om the telephone unit is picked up by the user tlu-ough an earphone, privacy of conversation can he maintained. Ia addition, through a transmitter-receiver earphone system. halldS-flee telepll(lile Co117111L111(CltlOn lS possible. Moreover, the only changes to necessary for introducin~~ the telephone communication system of this invention is to wire a microphone to tl~e 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 he 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.
BRIE:I~ DESCRIPTION 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 FfLE: 3~434.RTF
drawin~~s illustrate embodiments o1~ the Illvelltloll alld, together with the description.
serve to explain the principles of the invention. In the drawings.
Fig. l A is a hlo cl: diagram showing a schematic layout of a telephone COI11l11llnlCatloll sfStelll uccordin~, to one preferred elllbOdlnlellt of this invention;
Fi'~. 1 B. 1 C' arc hlocl: diagrams showing a schematic layout of a telephone communication system according to another preferred elnbodllllellt of this invention;
Fig. 2 is a diagram showing the components of a telephone communication system set up inside a cur according to this invention; alld Fig. 3 is a diagram showing the components of a telephone communication I o system set up inside an office according to this invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Reference now he made in detail to the present preferred embodiments of the invention. examples of which are illustrated in the aCC011lpally117g dl'aVVlngs. Wherever possible. the same reference numbers are used in the drawings and the description to refer to the same or like parts.
Ivig. lA is a hlocl: diagram showing a schematic layout of the telephone communication system according to one preferred embodiment of this invention.
Fll.l:: s:l:>-4.RT~
As shown in Fip,. 1 A, the telvphonc communication system 10 01~ this inv ention includes a microphone 12, a transmitter 16 and a receiver earphone 18. The microphone 12 and the transmitter 16 are connected to a telephone 14. The telephone 14 can he a mobile telephone, a cellular telephone, a car telephone. an indoor wired > telephone or an indoor wireless telephone. The microphone 12 is used for receiving a first voice signal 22 li~om a user 20, and then the first voice signal 22 is passed on to the telephone 14 through a cable 24. Subsequently, the telephone 14 sends out the first voice signal 22 to a telephone network. The transmitter 16 is used for receiving I11C0171111~~ voice signal 26 (a second voice: signal) fii-om the telephone network via the telephone 14. Ahter 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 receivin'' 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. lower to the receiver earphone 18 will automatically be cut so that power consumption is minimised. When this invention is applied, the user ?o usually wears the earphone 18. fl'herefore, the telephonel4 preferably includes an automatic answer circuit s6. When the telephone 14 rings for a pre-determined period, ie>r example. three tines or three seconds, the automatic answer circuit >6 will automatically pick up the call. Then, the user 20 can answer the caller through the telephone communication system 10.
FILE: 3434.RTF
Fi;~. 1 B is a blocl: diagram showily a schematic layout of the telephone Conlillllllleatloll s~'~tl'.111 ae(a)i'dlilg Lo ailothel' preferred e11111odlillellt Of thlS 111Velltloll.
As shown in Fig. 1 B, alternatively, the transmitter 16 also can be built ill the telephone 14. ~hherefore, the transmitter 1 (. can be powered by the towel' supply of the telephone l 4. for example. batteries.
Ivi'~. I C is a block diagram showing a schematic layout of the telephone COI1ll11LI111Cat1o11 sySlClll accordin~~ to allothel' preferl'ed embodiment of this invention.
Referring to Fig. 1 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 or 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 of 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.
1 B, the microphone electrode and the grotnld electrode of~ the plug are respectively coupled to the microph(>ne electrode and the ground electrode of the socket.
Meanwhile. the earphone electrode is floating so that the built-in transmitter 16 is ~u enabled. For the case in Fig. 1 C, the three electrodes of the plug are respectively coupled to the electrodes of~the socket. lfhe connector will detect that the earphone 44 is engaged, and then disable the built-in transmitter 16.
(=I I,t:: .>-t ;-t.RTh Although radio fi~e~luenc:v can serve as a medium for carryin;~ out voice communication. inii-arcd wave has several advantages over radio Ii~equency especially for short distance transmission. Firstly, radio frequency equipment are generally more costly to build. Secondly. only one-channel. mono-inti~areci light rays are required in this invention. <)ne-cll,mnel. mono-ini~rared light rays are even cheaper to produce than W ~o-channel infrared light rays. Thirdly, a large number of household or office appliances are electronically operated using radio wave frequencies. Hence.
transmitted telephone si!~nals are likely to be interfered, thereby lowering telephone voice qualit~~. Alternatively. the electronic appliances may mal-function due to o> interference from the telephone. I11 addltlon, 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 peoples health compared with radio wave. However, it is by no means a restriction to the type of Co111111tlllleatloll Illedlull7. In fact, anyone familiar with electronic ~ > C01711111I111Cat101'1 Call stl Il set up the Satlle telephone COI111nu111Catloll SyStelll lISll7g 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.
~0 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 4G or to either side of the driver's seat 46. Some types of car may even have a mobile or cellular telephone stand (not shown in the tigure) fixed to the dashboard 48 in front of the driver's seat. The microphone 12 is best placed somewhere near the instrument FILf:: ;4s4.RTF
panel >0 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 correct the microphone 12 anti the mobile or cellular telephone 44. ~fhls al'1"lllgellll'.lll makes it easier for the microphone 12 to pick up voice signals from the driver 4(). The transmitter 16 is best placed somewhere near the s instrument panel 5() or tlm sun visor (not shOWll 111 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 telephone 44. ~3atteries or the batteries of the mobile or cellular telephone 44 can be used to power the en sitter 16. Alternatively, power can be drawn from the car battery by connection to a cigarette lighter 54 through a power cord 52.
When the nubile or cellular telephone 44 has an incoming call, voice of the person on the other end is converted 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 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 users collar or user's clothes in front of the chest.
Furthermore, the earphone I 8 can he a headset worn on user's head or simply an earplug that can plug into the user's ear. ()f course, by means of the microphone 12, the other party can 2o receive voice signals tiwm the driver 40 as well. In general, the microphone 12 can be installed anywhere inside the car. I-lowever, because drivers 40 will usually put the nloblle cll- cellular telehltone near them. the microphone 12 is preferably placed near the driver 40 as well. Furthermore, since noise interference is low in inside the car 42, the microphone can be connected to the mobile or cellular telephone 44 using a piece of I=ILf~: 34_,4.RTF
wire to obtain high-quality voic:c signal transmission. I3y transmitting mono wireless signals to the receiver earphone 18. hands-free telephone communication is possible.
Hence. the telephone communication system of this invention is able to improve driving sat-ety. maintain I~carin;~ privacy and lower equipment cost at .the same time.
s I~i'~. 3 is a diagram showin~~ the components of a telephone communication system set up inside an ui~fice according to this invention. As shown in Fig.
3. when the user 60 is en~~a~~ed in computer-related wol°k (for example. using the Keyboard 62).
hls OI' her hallds are not li~ee 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 I o 1110L1thpleCe Of a handset 68 through a connector 66. The microphone 12a can be positioned at a convenient location, for example, above the monitor screen 70 of the computer, edge of the desk or simple 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 I, connector 74. The inti~ared transmitter 16a can be similarly positioned above the monitor screen 70. Similarly, if there is an indoor wireless telephone 76. the microphone 12h of thls lllvent1011 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, ?0 an amplifier 82 may be added to the connector 78 for amplifying the voice of the user 60. ~Ihc infrared transmitter 16h can be connected to the earpiece of the handset 76 through a fourth conocctor 84. ~hhe inti~ared transmitter 16b can be similarly positioned on a computer desk 8(f. lhhe connectors 66, 74. 78 and 84 can be the device as disclosed in Taiwan Patent No. 090814 (or U.S. Patent No. 5,850,439).
FILE: 3434.RTF
Alternatimly. any telephone converter or conjunction box available 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 listens 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 12a or 12b. Hence, there is no need to hold the handset with a hand. Furthermore, 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 to 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 ~ 5 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 he very little noise interference indoor, high-quality sound can still be obtained by passin<~= the voice signal through the microphone 12a or 12b to the telephone 64 or the handset 76 via a piece of wire. E3y transmitting mono wireless signals to the ~o receiver eaphone 18, hands-free telephone communication is possible. Hence, the telephone communication system of this invention is able to provide hands-tree telephone COII1111u111Catl(111 and maintain hearing privacy at the same time with just minor increase in the cost of equipment.
I=ILI=,: sa3a.RTl=
In addition. the receiver Call Include an automatic shut-off circuit (label 31 in Fig.
1 ). When the receiver does not pick up any signal for a pre-determined period, power to the receiver will autonlatlcally be Cut so that pOWer COnSLllTlptioll IS
11111111111Zed.
111 Sullllllal'~', the teC11111CIUe Ol 112111CIS-~reC telephone CO111n1tII11Cati011 Sy'Slelll 1S at pCeSent a lrelld 111 telepllolle appllC1t1011. BeSIdeS Cal'lllg l01' the dl'IVeI'~S Saf2ly Oll the road, the telephone-usin~~ consumer public also requires the system to be convenient in use, enou~~h 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.
I o 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 I > up CO111111011 USeI'S. If one is not carefill, the earphone/microphone system might cause great discomfort to the ear. In some cases, the headset might even be torn away. In addition. Cven if Conventional wireless earphone and microphone are used to boost operational COIIVeIIIeIICt' and privac~~. equipment cost will increase considerably. For example. a set of stereo wireless device, due to its intrinsic complexity, no matter if 3o infrared or radio wave is used as a medium, the cost is almost equal to and sometimes higher than the price oi~ a mobile or cellular telephone. Therefor, consumers are unlikely accept the product.
I=I I~I~: 3-! ;-t.RTF
~f~he inventor, rcco~~nizin~~ such problems, provides a solution from a fresh new Consldel'at1011. The Ill\'ell to l' observes that IIIOSt people that require hands-free telephone conversation are drivers or some oftice peoples (for example, receptionists or salespeople). ~h~ir commonality lies in that both hands must be free either to drive a car or to take down notes and important Illfol'lllatlOn. Moreover, they are most likely to sit in a tied location not far away f~ron~ the telephone. In addition.
their conversation needs some de~~ree of privacy because some information they gathered 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 to wireless earphone and wired microphone is established. The new telephone communication system is able not only to provide the convenience and privacy of a hands-tree 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 I; kept to a minimum. ~l~u provide operational convenience, a wireless earphone and a fixed microphone is used. Therefore, a user can enjoy the comfort of hands-free conversation while moving about at the same time. Because the speaker is attached to the earphone, privacy ol~ tally by the other party can be maintained.
Furthermore, the combination of a wireless earphone and a wired microphone takes into consideration 'o cost of the equipment. Since the User is unlikely to be far away from the telephone, hlgh-qllallLy sOtlnd 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 leas the advantages of being able to provide user convenience, privacy and low cost.
FILE: s~4;~t.RTF
ft be apparent to those skilled in the art that various nu~difications and variations can be made to the structure: of the present invention without departin g from the scope or spirit oh tl~o invention. (n 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 ii,l(owing claims and their equivalents.
Claims (36)
1. A communication system for a mobile or a cellular telephone to be installed inside a car, comprising:
a microphone connected to the mobile or cellular telephone for receiving a lust voice signal from a user and then transmitting the first voice signal to the mobile or cellular telephone;
a transmitter connected to the mobile or cellular telephone for receiving a second voice signal 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.
a microphone connected to the mobile or cellular telephone for receiving a lust voice signal from a user and then transmitting the first voice signal to the mobile or cellular telephone;
a transmitter connected to the mobile or cellular telephone for receiving a second voice signal 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 telephone 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 battery of the mobile or the cellular telephone.
6. The telephone communication system of claim 1, wherein the transmitter is powered by a car battery.
7. The telephone communications system of claim 6, wherein the transmitter further includes a power cable connecting the transmitter to the cigarette lighter of the car.
8. 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.
10. The telephone communication system of claim 1, wherein the wireless signal includes infrared wave.
11. The telephone communication system of claim 1. wherein the wireless signal includes radio wave.
12. The telephone communication system of claim 1, wherein the mobile or the cellular telephone further includes an automatic answer circuit.
13. 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 wireless signal from the transmitter and then converting the wireless signal into a third voice signal for hearing by the user.
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 wireless signal from the transmitter and then converting the wireless 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.
15. The telephone communication system of claim 14, wherein the receiver further includes an automatic shut-off circuit.
16 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 telephone communication system of claim 13, 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 wire-connected 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 signal so that the wireless signal is broadcast; and a receiver earphone per picking up the wireless signal from the transmitter and then converting the wireless signal into a third voice signal for hearing by the user.
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 signal so that the wireless signal is broadcast; and a receiver earphone per picking up the wireless signal from the transmitter and then converting the wireless signal 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 includes 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 telephone communication system of claim 22, wherein the transmitter is connected to the indoor wireless telephone through a connector.
28. The telephone communication system of claim 22, wherein the wireless signal includes infrared 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 receiver earphone for picking up the wireless signal from the built-in transmitter of the telephone and then converting the wireless signal into a third voice signal for hearing by the user.
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 receiver earphone for picking up the wireless signal from the built-in transmitter of the telephone 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 telephone and the cellular telephone.
32. The communication system of claim 30, wherein the receiver earphone is composed of a receiver anti an earphone connected to the receiver.
33. The communication 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 of claim 30, wherein the wireless signal includes infrared wave.
36. The communication system of claim 30, wherein the wireless signal includes radio wave.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9905529A GB2347817B (en) | 1999-03-10 | 1999-03-10 | Communication system for telephone |
| CA002265145A CA2265145C (en) | 1999-03-10 | 1999-03-10 | Communication system for telephone |
| SG9901239A SG89276A1 (en) | 1999-03-10 | 1999-03-24 | Communication system for telephone |
| NL1011712A NL1011712C2 (en) | 1999-03-10 | 1999-03-31 | Communication system for telephones. |
| IT1999MI000701A IT1312241B1 (en) | 1999-03-10 | 1999-04-02 | COMMUNICATION SYSTEM FOR A TELEPHONE. |
| ES009900721A ES2153771B1 (en) | 1999-03-10 | 1999-04-08 | TELEPHONE COMMUNICATION SYSTEM. |
| FI990785A FI990785A (en) | 1999-03-10 | 1999-04-09 | Phone Communications System |
| SE9901263A SE9901263L (en) | 1999-03-10 | 1999-04-09 | Telephone communication system |
| ZA9903087A ZA993087B (en) | 1999-03-10 | 1999-05-04 | Communication systems for telephone. |
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9905529A GB2347817B (en) | 1999-03-10 | 1999-03-10 | Communication system for telephone |
| CA002265145A CA2265145C (en) | 1999-03-10 | 1999-03-10 | Communication system for telephone |
| SG9901239A SG89276A1 (en) | 1999-03-10 | 1999-03-24 | Communication system for telephone |
| NL1011712A NL1011712C2 (en) | 1999-03-10 | 1999-03-31 | Communication system for telephones. |
| IT1999MI000701A IT1312241B1 (en) | 1999-03-10 | 1999-04-02 | COMMUNICATION SYSTEM FOR A TELEPHONE. |
| ES009900721A ES2153771B1 (en) | 1999-03-10 | 1999-04-08 | TELEPHONE COMMUNICATION SYSTEM. |
| FI990785A FI990785A (en) | 1999-03-10 | 1999-04-09 | Phone Communications System |
| SE9901263A SE9901263L (en) | 1999-03-10 | 1999-04-09 | Telephone communication system |
| KR1019990012886A KR20000066047A (en) | 1999-04-13 | 1999-04-13 | Communication system for telephone |
| ZA9903087A ZA993087B (en) | 1999-03-10 | 1999-05-04 | Communication systems for telephone. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2265145A1 CA2265145A1 (en) | 2000-09-10 |
| CA2265145C true CA2265145C (en) | 2002-06-18 |
Family
ID=33033396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002265145A Expired - Fee Related CA2265145C (en) | 1999-03-10 | 1999-03-10 | Communication system for telephone |
Country Status (9)
| Country | Link |
|---|---|
| CA (1) | CA2265145C (en) |
| ES (1) | ES2153771B1 (en) |
| FI (1) | FI990785A (en) |
| GB (1) | GB2347817B (en) |
| IT (1) | IT1312241B1 (en) |
| NL (1) | NL1011712C2 (en) |
| SE (1) | SE9901263L (en) |
| SG (1) | SG89276A1 (en) |
| ZA (1) | ZA993087B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0021238D0 (en) * | 2000-08-31 | 2000-10-18 | Lewis Marcus | Hands-free kit for mobile radio telephone handset |
| GB2369744B (en) | 2000-08-31 | 2002-11-13 | Lightwire Comm Ltd | Hands-free kit for mobile radio-telephone handset |
| DE60037898T2 (en) * | 2000-12-22 | 2009-01-22 | Ford Global Technologies, LLC, Dearborn | Remote control and communication system for use in vehicles and key fob unit therefor |
| KR20080065879A (en) | 2007-01-10 | 2008-07-15 | 삼성전자주식회사 | Apparatus and method for frequency modulation transmitting of audio signal |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2820096A1 (en) * | 1978-05-09 | 1979-11-15 | Standard Elektrik Lorenz Ag | Telephone instrument with remote listening unit - uses earphones with radio receiver and transmitter in instrument modulated by speech signal |
| JPS56152395A (en) * | 1980-04-24 | 1981-11-25 | Gen Eng:Kk | Ear microphone of simultaneous transmitting and receiving type |
| DE4300848A1 (en) * | 1992-01-17 | 1993-08-12 | Pioneer Electronic Corp | Car telephone system connected to car radio - transmits telephone signals to car radio for replay over loudspeaker and display on radio display |
| DE4310873C2 (en) * | 1993-04-02 | 1995-11-16 | Rainer Lauterbach | Cordless, removable headset |
| DK0626773T3 (en) * | 1993-05-14 | 1996-03-11 | Alcatel Nv | Portable radio phone with separate speaker |
| FR2706103B1 (en) * | 1993-06-03 | 1997-01-31 | Ericsson Ge Mobile Communicat | Radiotelephone apparatus. |
| DE69632102T2 (en) * | 1995-01-06 | 2005-03-03 | Koninklijke Philips Electronics N.V. | PORTABLE COMMUNICATION DEVICE |
| JPH10507052A (en) * | 1995-03-04 | 1998-07-07 | モルド−テック プラスティックス リミテッド パートナーシップ | External communication source for radio interface |
| WO1996037052A1 (en) * | 1995-05-18 | 1996-11-21 | Aura Communications, Inc. | Short-range magnetic communication system |
| JP3022876U (en) * | 1995-08-14 | 1996-04-02 | 怡利電子工業股▲ぶん▼有限公司 | Freehand calling system for mobile phones |
| US5664012A (en) * | 1995-11-06 | 1997-09-02 | E. Lead Electronics Co., Ltd. | Hands free device for a portable phone |
| JPH09187060A (en) * | 1995-12-28 | 1997-07-15 | Nec Corp | Portable telephone set with wireless earphone |
| FI960358A (en) * | 1996-01-26 | 1997-07-27 | Veijo Sakari Makkonen | Headphone means and method for placing a headphone |
| FI101662B1 (en) * | 1996-02-08 | 1998-07-31 | Nokia Mobile Phones Ltd | Hands-free arrangement of a mobile device |
| US5943627A (en) * | 1996-09-12 | 1999-08-24 | Kim; Seong-Soo | Mobile cellular phone |
| DE19645259C2 (en) * | 1996-11-02 | 2001-02-08 | Juergen Prelle | Device for a mobile phone |
| AU7400298A (en) * | 1996-12-12 | 1998-07-03 | Siemens Aktiengesellschaft | Mobile telephone |
| JPH10224449A (en) * | 1997-02-07 | 1998-08-21 | Napolex Co | Portable telephone set hand-free device |
-
1999
- 1999-03-10 GB GB9905529A patent/GB2347817B/en not_active Expired - Fee Related
- 1999-03-10 CA CA002265145A patent/CA2265145C/en not_active Expired - Fee Related
- 1999-03-24 SG SG9901239A patent/SG89276A1/en unknown
- 1999-03-31 NL NL1011712A patent/NL1011712C2/en not_active IP Right Cessation
- 1999-04-02 IT IT1999MI000701A patent/IT1312241B1/en active
- 1999-04-08 ES ES009900721A patent/ES2153771B1/en not_active Expired - Fee Related
- 1999-04-09 FI FI990785A patent/FI990785A/en not_active IP Right Cessation
- 1999-04-09 SE SE9901263A patent/SE9901263L/en not_active Application Discontinuation
- 1999-05-04 ZA ZA9903087A patent/ZA993087B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FI990785A (en) | 2000-10-10 |
| FI990785A0 (en) | 1999-04-09 |
| CA2265145A1 (en) | 2000-09-10 |
| ES2153771A1 (en) | 2001-03-01 |
| ITMI990701A1 (en) | 2000-10-02 |
| NL1011712C2 (en) | 2000-10-26 |
| SE9901263D0 (en) | 1999-04-09 |
| GB9905529D0 (en) | 1999-05-05 |
| SE9901263L (en) | 2000-10-10 |
| GB2347817A (en) | 2000-09-13 |
| ZA993087B (en) | 2000-01-26 |
| GB2347817B (en) | 2001-02-21 |
| SG89276A1 (en) | 2002-06-18 |
| NL1011712A1 (en) | 2000-10-09 |
| IT1312241B1 (en) | 2002-04-09 |
| ES2153771B1 (en) | 2001-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |