KR20030012772A - hands free phone - Google Patents

Abstract

PURPOSE: A hands-free device of a wired telephone set is provided to give a bidirectional speaker phone function of the wired telephone set capable of performing transceiving through a speaker and a microphone, without a transmitter/receiver, a headset and an ear-set, and to enable a secret call through the ear-set. CONSTITUTION: A voice amplifying circuit(105) and a speaker(106) are integrated in the output side of a speech circuit(303) of a telephone set. A voice signal controlling unit(20) is arranged in the voice amplifying circuit(105). In the voice signal controlling unit(20), a voice signal controlling part(201) detects electric voice signals inputted to a voice signal input part(104) to amplify the detected electric voice signals and output the amplified electric voice signals through the speaker(106), and a user controlling part(50) enables a user to control the voice signal controlling part(201). The user controlling part(50) includes a microphone(501) and a secret call switch(505), and provides a redial function(507), a call selection switch(302), a volume adjusting function(506), a power supply(510) for operating the voice amplifying circuit(105) and other annexed function(509).

Description

Hands free device for landline phones

The present invention relates to a wireless hands-free of a landline telephone to which a speech amplification circuit is configured in addition to a speech circuit in a landline telephone, to which a speech signal control device is applied, and more particularly, to an output function of a conventional landline telephone. By performing the additional voice amplification and output for the call voice signal received from the outside through the voice amplifier circuit, and the two-way call function of the wired telephone to replace and transmit the existing handset through the voice signal control device, Hands-free function.

1 is a configuration diagram schematically showing the configuration of a conventional landline telephone.

The landline telephone 10 of FIG. 1 is a multi-function telephone (video phone, video phone, etc.) consisting of a single-function telephone and a multi-function telephone equipped with a telephone voice signal received from Pstn and a telephone function for transmitting a user's voice signal. Door phone). In addition, it includes all the composite phones, including the video portion supporting the wired telephone (10).

The incoming signal received from Pstn is in the off mode of the call selection switch 302, and the ring tone generator 301 rings until the call selection switch 302 is energized when receiving an external signal. The ring tone is received through the speaker 312, and when the user lifts the handset 310 from the phone 10, the on / off switch configured in the call selection switch 302 is turned on, and in the case of the speakerphone By selecting the on / hook switch (not shown) connected to the selection switch 302, the incoming signal is stopped and the communication mode is transmitted and received through the handset 310 through the speech circuit unit 303, and the speakerphone is connected to the speaker 312. Through the one-way call to receive the other party's voice call signal.

The user's outgoing signal is dial recognition through the keypad 304 and the user's voice signal input by the microphone 311 installed in the handset 310 is supplied to the speech circuit unit 303 to make a call with the other party. Detailed operation is omitted.

In wired and wireless telephones such as speakerphones of portable and landline telephones, Hands Free, which is invented to make a call without using hands when using a telephone, is used. Using the method that allows the call and the portable hands-free, the cradle type, which is integrated with an amplifier function consisting of a cradle, a microphone and its own speaker, is installed and used in a certain place.

In the case of hands-free devices using the frequency reception method, the mobile phone is connected through a circuit unit configured to synchronize a specific frequency with an audio frequency in a separate circuit device, and a wireless network composed of a connection jack or a wireless circuit, and the specific frequency of the audio must be used. There is a wireless type that can listen to the other party's voice through the speaker. In the case of the portable hands-free, an external power source is used to supply power to the hands-free with the increase in manufacturing cost due to the complicated circuit configuration.

In addition, in a conventional landline telephone, a telephone without a handset cannot make a basic call as well as a hands-free call. Moreover, it has been an economic burden due to an expensive cost structure for hands-free function. In addition, when using a headset and an earset for a long time call or using both hands, a lot of inconvenience occurred.

The conventional telephones described above have a method of holding a handset by hand, a method of making a call using a headset and a headset for hands-free calling, and a one-way speakerphone function of an on / hook function through a speakerphone. Should be used.

In addition, wired / wireless telephones that receive the other party's voice through the speaker of the telephone and hands-free call through the microphone installed inside the telephone without the handset are equipped with complicated circuit configuration and external power for voice amplification and hands-free functions. It should be used and has a high cost structure.

In addition, the frequency reception method uses overlapping or adjacent frequencies with frequency, which causes a lot of noise due to interference or broadcasting signal interference, howling occurs, and the life of the battery is shortened due to the magnet used for fixing the portable device installed in the cradle. Experimental results have already been announced and have been a problem.

In addition, there is no security that can be intercepted call content, there is a problem that the call is disconnected during the call if there is an obstacle. Due to this problem, the portable hands-free case is losing the inherent function of the phone in call quality.

Therefore, the object of the present invention is to add a conventional telephone and the integrated voice amplification circuit of the present invention in a wired telephone, through the voice signal control, without the handset of the perfect two-way speaker phone function and close to the original sound quality wireless hands-free function Will be provided.

Due to the miniaturization of wired telephones and various designs, this system provides more than the existing functions through significant cost reduction, and improves the most important call sound quality and hands-free function of two-way calling function in wired telephones that receive and receive wired telephones through speakers. It aims to respond to the Information and Communications Revolution by providing wired telephones, which are the basis of the twenty-first century information and communication, which are being changed by providing secret calls as needed.

1 is a configuration diagram showing the configuration of a conventional telephone.

2 is a block diagram showing the configuration of a landline telephone of the present invention.

3 shows an embodiment of the actual implementation of FIG. 2 and a keypad of a telephone;

<Explanation of symbols for the main parts of the drawings>

10: Landline Phone 101: Pstn

20: voice signal control unit 201: voice signal control unit

30: telephone circuit

301: ring tone generator 302: call selection switch

303: Speech Network circuit part 304: Keypad part

50: user control unit

501: microphone 502: ear set (hands free)

503: Earset storage device 504: Earset storage device cover

505: secret call switch 506: volume

507: redial 508: ear jack insert

509: other 510: voice amplifier power supply

In the landline telephone to which the voice signal control device of the present invention is applied to achieve the above object, the voice signal input unit and the low frequency amplifier circuit are configured in the speech circuit unit of the telephone to detect the electric voice signals inputted to the voice signal unit to detect low frequency amplification. Voice signal control unit for outputting through a control unit for allowing the user to control the voice signal control unit, and a power amplifier for driving the voice amplifier circuit unit and amplification circuit unit and a speaker.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a voice control device 20 of the present invention is installed on the output side of the speech network circuit unit 303 of the landline telephone 10 to sense the electrical signals input to the telephone 10 through the speech circuit unit 303 The low frequency amplification 105 is applied to the applied audio signal. That is, in processing the electrical voice signal (hereinafter, referred to as “first voice signal”) input to the telephone 10 from the outside, the voice signal unit 104 receives the electrical signal input to the speech circuit unit 303. The amplified voice is output through the low frequency amplifier circuit 105 and output to the speaker 106.

The incoming signal received from Pstn is received by the speaker of the ring tone generator 301 with the call selection switch 302 of the telephone 10 turned off. At this time, the incoming signal through the ring tone generator 301 stops the incoming signal at the same time as selecting the call selection switch 302 and automatically switches to the hands-free call mode.

In addition, the operating power for amplifying the speaker 106 of the voice amplification circuit 105 may use an external power source using an adapter, or may use its own power source of Pstn, but in the present invention, a low voltage power source that can be replaced and charged is used. By configuring a low voltage amplification circuit that can implement a hands-free operation to perform the above-described function of the present invention.

In addition, the user adjusts the reception sound through the volume function 506 to adjust the volume of the call reception sound through the speaker 106, hands-free function to efficiently use the power to supply the operation of the voice amplification circuit 105 The power supply 510 is configured to be applied only when the power supply is selected. The power supply 510 of the voice amplifier circuit 105 is automatically cut off at the same time as the secret call selection switch 505 is selected to extend the life of the battery. It is configured to be.

When the user's outgoing voice signal is input to the other party's telephone number through the keypad (304), the voice signal of the user with the dial recognition is converted into an electrical signal through the microphone 501, Speech Network circuitry 303 Through the user's voice signal can be transmitted to the other party.

When the user inputs the other party's telephone number through the keypad 304 for the call of the first voice signal, the user can use the button from the speaker 106 of the telephone 10 of the present invention configured as a speakerphone whenever a button is input. Receiving the signal allows accurate number input.

Therefore, the wired telephone of the present invention can use the wireless hands-free function of the two-way speaker phone without the existing handset, earset and headset.

The controller 50 is a user control means for controlling the voice signal controller 201. The control unit includes a microphone 501, an ear set 502, a secret call selection switch 505, a volume control function 506, and the like will be described later.

Therefore, by using the above-described functions of the present invention, when the input signal received from Pstn is connected to a communication device such as a computer by installing two modular jacks, the wired telephone 10 is used as an Internet phone, and a communication device such as a computer is used. You can make hands-free calls while using them.

In addition, since the user's call can be recorded in the voice signal control unit of the telephone 10 and the recorded content can be transmitted, the function of the answering machine can also be performed. That is, since a service for informing a caller number is currently being implemented, when the caller does not want to check the caller by using the caller service, the recorded voice may be transmitted to the voice signal control unit 201 of the telephone 10.

When the user makes a secret call through the ear set 502 without receiving the first voice signal through the speaker 106, when the secret call selection switch 505 is selected, the operating power of the voice amplifier circuit 105 is automatically turned on. The power is cut off and hands-free calls cannot be made.

Therefore, the earset of the handset configured in the earset 502 is connected to the call selector switch 302, so that the earset 502 enclosed in the earset storage device 503 is configured to open and use the earset storage cover 504. have.

In the above-described embodiment, the landline telephone 10 is a telephone capable of transmitting and receiving a voice signal of a single media function, but the telephone 10 is a telephone (computer, video telephone, In the case of video phone, credit card checker, FAX, door phone, and any other landline telephone), if a telephone of another complex function is connected to the landline telephone 10 instead of the landline telephone function of the present invention described above. Additional features will be provided.

3 is a diagram showing that the keypad 304 is provided with the functions of the control unit 50 and the keypad 304 having a dial button which is commonly used at the upper end of the telephone of the present invention.

The control unit includes redial function 507, volume control function 506, secret call selection switch 505, call selection switch 302, ear jack set 502, ear jack storage device 503, ear jack storage device. Caba 504, the earphone jack 509, and other functions 510 is a comprehensive representation of what constitutes a variety of additional functions and a detailed description thereof will be omitted.

Accordingly, the present invention may be variously applied and may take various forms, and only specific embodiments thereof are described in the detailed description of the present invention.

It is to be understood, however, that the present invention is not limited to the specific forms referred to in the above description, but rather includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be understood as

As described above, in the landline telephone of the present invention to which the voice signal control device is applied, a hands-free call can be made freely without a handset, and a secret call can be made through an ear set if necessary, and furthermore, a manufacturing cost can be reduced by miniaturizing a product without requiring a handset. At the same time, it provides excellent security of wired telephones and excellent call quality of two-way call function, and hands-free function of wired telephone is provided to provide various functions of wired telephone which can be used as wireless hands-free telephone.

Claims (9)

In the phone configuration of the single media function in which the voice amplification circuit is integrated in the wired / wireless telephone and the support of the complex media function, On the output side of the speech circuit section of the telephone, an audio amplification circuit and a speaker are integrated. A voice signal control unit is configured in the voice amplification circuit unit to detect electrical voice signals input to the voice signal input unit, amplify the electrical voice signals, and output the speaker to a speaker. Hands-free device of a wireline telephone, characterized in that the voice signal control device consisting of a user control unit for allowing a user to control the voice signal control unit is applied. The method of claim 1, wherein the user control unit, Microphone to receive the user's voice; Secret call switch for secret call; And Hands-free device for a landline telephone, comprising a redial function, a call selection switch, a volume control function, a power supply for driving an amplification circuit, and other additional functions. The hands-free device of claim 1, wherein the voice signal control unit of the telephone is embedded in the voice signal input unit of the telephone to control voice signals input to the telephone. The hands-free device of claim 2, wherein the user controller further comprises an earset for listening to a voice signal input to the voice signal controller of the telephone and transmitting a voice signal of the user. 3. A telephone according to claim 1 or 2, wherein in all the cordless and cordless telephones without the handset, the telephone and the video portion of the telephone are supported. Hands-free device of a wired telephone, which is configured to transmit through a microphone of a user control unit and to receive a speaker of the telephone. According to claim 1 or 2, wherein the earset for the secret call is a handset unit is integrally connected to the secret call switch, the earset is characterized in that the earset storage device and the storage cover is formed to be stored in the upper part of the phone Hands-free device for landline telephones. 3. The landline telephone according to claim 1 or 2, wherein the earset further includes an ear jack insertion portion in the telephone to be detached from the telephone and to be carried separately from the telephone using an ear jack plug for detachment and ease of attachment. Hands-free device. The hands-free device according to claim 1 or 2, wherein an existing handset is installed outside the telephone to make a call through the handset during a secret call. 3. The power supply unit according to claim 1 or 2, wherein the power supply unit for the operation of the voice amplification circuit is composed of a low voltage stabilization circuit using an external power source using an adapter or having a battery that can be charged and exchanged inside the telephone. Hands-free device for a wired telephone, which is connected to a selection switch so that power is automatically supplied when the hands-free function is selected, and power applied to the voice amplifier circuit is automatically cut off when the secret call switch is selected.