KR100304531B1 - Automatic answering unit in handsfree phone - Google Patents

Automatic answering unit in handsfree phone Download PDF

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Publication number
KR100304531B1
KR100304531B1 KR1019930031482A KR930031482A KR100304531B1 KR 100304531 B1 KR100304531 B1 KR 100304531B1 KR 1019930031482 A KR1019930031482 A KR 1019930031482A KR 930031482 A KR930031482 A KR 930031482A KR 100304531 B1 KR100304531 B1 KR 100304531B1
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KR
South Korea
Prior art keywords
voice
level
level detector
received
signal
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KR1019930031482A
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Korean (ko)
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KR950022586A (en
Inventor
김영철
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구자홍
엘지전자주식회사
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Priority to KR1019930031482A priority Critical patent/KR100304531B1/en
Publication of KR950022586A publication Critical patent/KR950022586A/en
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Publication of KR100304531B1 publication Critical patent/KR100304531B1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/60Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041Portable telephones adapted for handsfree use
    • H04M1/6075Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/60Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit

Abstract

PURPOSE: An automatic answering unit in a handsfree phone is provided to automatically receive a call using switching by a user's voice when the mobile phone is called. CONSTITUTION: An automatic answering unit in a handsfree phone consists of a received voice filter(103), a received level detector(104), a mike amplifier(101), a transmitting level detector(102), a transmitting attenuator(106), a receiving attenuator(107), a voice level detector(111), and a call transfer controller(112). The received voice filter(103) removes noise from a received voice signal. The received level detector(104) measures the level of the received voice signal. The mike amplifier(101) amplifies the input of the mike. The transmitting level detector(102) measures the level of a voice signal inputted to the mike. The voice level detector(111) detects a voice among the signals inputted to the mike and confirms whether the voice is more than a required level. The call transfer controller(112) receives a result from the voice level detector(111) and transmits it to the mobile phone.

Description

핸드프리 전화기 자동응답장치Handfree Telephone Answering Device

제1도는 종래 자동응답장치의 구성도.1 is a block diagram of a conventional automatic answering device.

제2도는 본 발명 응답장치의 구성도.2 is a block diagram of a response device of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

101 : 마이크 앰프 102 : 송신레벨 검출부101: microphone amplifier 102: transmission level detector

106 : 송신감쇄부 111 : 음성레벨 검출부106: transmission attenuation unit 111: voice level detection unit

112 : 자동 착신전환 제어부112: automatic call forwarding control

본 발명은 이동무선전화기의 차량 핸드프리 기능 중에 자동응답장치에 관한 것으로, 특히 음성에 의한 스위칭을 이용하여 이동무선전화기 호출시 자동으로 수신하도록 하는 자동응답장치를 제공하기 위한 것이다.The present invention relates to an automatic answering device in a vehicle hand-free function of a mobile wireless telephone, and more particularly, to provide an automatic answering device to automatically receive a call on a mobile wireless telephone using switching by voice.

종래의 핸드프리 기술구성은 제1도에 나타난 바와 같이 마이크로 들어온 입력을 증폭시키는 마이크 앰프부(1)와, 송신부의 입력된 음성신호의 레벨을 도면에 미도시한 송신필터부를 통하여 측정하는 송신 레벨 검출부(2)와, 상기 송신레벨 검출부의 송신음성과 수신 음성의 레벨을 비교하여 송신/수신 감쇄기를 제어하는 감쇄제어부(5)와, 상기 감쇄제어부의 제어에 의해 이득이 조절되는 송신/수신감쇄부(6/7)와, 수신부의 입력된 음성신호의 레벨을 측정하는 수신 레벨 검출부(4)와, 수신음성 신호의 잡음을 제거하는 수신음성 필터부(3)와, 스피커 출력을 조절하는 볼륨부(9)와, 음성신호를 전기적 신호로 바꾸어주는 마이크 및 스피커등으로 구성되어 있다.In the conventional hand-free technology configuration, as shown in FIG. 1, the microphone amplifier unit 1 for amplifying the micro-input and the transmission level for measuring the level of the input audio signal of the transmitter through the transmission filter unit not shown in the figure. Attenuation control unit 5 for controlling the transmission / reception attenuator by comparing the detection unit 2 with the level of the transmission voice and the reception voice of the transmission level detection unit, and the transmission / reception attenuation in which the gain is adjusted by the control of the attenuation control unit. A section 6/7, a reception level detection section 4 for measuring the level of the input audio signal of the reception section, a reception audio filter section 3 for removing noise of the reception audio signal, and a volume for adjusting the speaker output And a microphone 9 and a speaker for converting a voice signal into an electrical signal.

종래의 핸드프리 동작을 설명하면 제1도에서 보는 바와 같이 우선 마이크로 입력된 음성신호는 전기적 신호로 변환되어 마이크 앰프(1)로 인가된다.Referring to the conventional hand-free operation, as shown in FIG. 1, a micro-input voice signal is first converted into an electrical signal and applied to the microphone amplifier 1.

여기서 음성신호는 일정한 이득으로 증폭되어 송신 감쇄부(6)로 전달된다.The audio signal is amplified with a constant gain and transmitted to the transmission attenuation section 6.

증폭된 음성신호는 송신레벨 검출부(2)로 인가되어 송신레벨을 검출하여 감쇄제어부(5)로 전달한다.The amplified voice signal is applied to the transmission level detection section 2, detects the transmission level, and transfers it to the attenuation control section 5.

반대로 수신된 음성신호는 수신 레벨 검출부(4)로 인가되어 수신 레벨을 검출한후 감쇄제어부(5)로 전달한다.On the contrary, the received voice signal is applied to the reception level detection unit 4 to detect the reception level, and then transmitted to the attenuation control unit 5.

상기 감쇄제어부는 송/수신 레벨 검출부로부터 받은 송신/수신 레벨에 대한 정보를 이용하여 송신과 수신음성의 레벨을 비교하여 송신신호가 수신신호보다 클 경우, 수신 감쇄부(7)를 증가시키고, 그 반대인 경우에는 송신 감쇄부(6)의 감쇄를 증가시킨다.The attenuation control unit compares the transmission and reception audio levels using the information on the transmission / reception level received from the transmission / reception level detection unit, and increases the reception attenuation unit 7 when the transmission signal is larger than the reception signal. In the opposite case, the attenuation of the transmission attenuation section 6 is increased.

즉, 송신과 수신음성 중 레벨이 작은쪽의 감쇄부의 감쇄량을 증가시켜 전체 루프 이득이 1이하가 되게 하여 하우링을 방지하도록 되어 있다.In other words, the attenuation of the attenuator at the lower level of the transmission and reception voices is increased so that the total loop gain is 1 or less to prevent the howling.

그러나 이와 같은 종래의 기술의 문제점은 차량에서 이동 무선 전화기의 핸드프리 기능을 운용시 통화시는 핸드셋을 들지 않고 할수 있으나 운전중에 외부에서 전화가 걸려 올때에는 직접 통화키를 눌러야 핸드프리 기능으로 통화를 할수 있다.However, the problem of the conventional technology is that when operating the handfree function of the mobile wireless phone in a vehicle, the handset function can be performed without lifting the handset. However, when a call is received from the outside while driving, the user must press the direct call key to make a call using the handfree function. can do.

따라서 본 발명에서는 운전중에 외부에서 전화가 걸려올때는 직접 통화키를 누르지 않고도 통화가 가능하게 하였다.Therefore, in the present invention, when a call is received from the outside while driving, a call can be made without pressing a direct call key.

이와 같은 본 발명의 목적은 증폭되어 입력된 송신 음성신호를 입력받아 레벨을 검출하여 일정레벨 이상이 되면 출력신호를 인가하는 음성레벨 검출수단과, 상기 음성레벨 검출수단의 인가신호를 받아 이동 무선 전화기가 자동으로 호출되도록 제어신호를 인가하는 자동 착신전환 제어부로 구성하므로써 달성될 수 있다. 이때, 자동착신전환 제어부는 음성검출수단(111)으로부터의 출력에 응답하여 핸즈프리장치에 접속된 통신단말기에 자동착신전환신호를 발생시켜, 통신단말기가 호출상태에 있는 경우에만 인에이블되도록 프로그램된 중앙처리장치(CPU)로 구성된다.The object of the present invention as described above is a voice level detecting means for receiving amplified input transmission voice signal and detecting a level and applying an output signal when a predetermined level is exceeded. It can be achieved by configuring the automatic call forwarding control unit for applying a control signal to automatically call. At this time, the automatic call forwarding control unit generates an automatic call forwarding signal to a communication terminal connected to the hands-free device in response to the output from the voice detection means 111, and is programmed to be enabled only when the communication terminal is in a call state. It consists of a processing unit (CPU).

본 발명 핸드프리 전화기 자동응답장치의 구성은 제2도에 나타낸 바와 같이 수신 음성 신호의 잡음을 제거하는 수신음성 필터부(103)와, 수신부로 입력된 음성 신호의 레벨을 측정하는 수신 레벨 검출부(104)와, 마이크로 들어온 입력을 증폭시키는 마이크 앰프부(101)와, 마이크로 입력된 음성 신호의 레벨을 측정하는 송신레벨 검출부(102)와, 송신음성과 수신 음성의 레벨을 비교하여 송신/수신 감쇄부(106/107)와, 마이크로 입력된 신호중에 음성의 레벨을 검출하여 일정레벨 이상인가를 확인하는 음성레벨 검출부(111)와, 음성 레벨 검출부로부터 수신한 결과를 이동무선 전화기로 보내주는 자동 착신전환 제어부(112)와, 스피커 출력을 조절하는 볼륨과 음성신호를 전기적 신호로 바꾸어주는 마이크, 스피커 등으로 구성한다.As shown in FIG. 2, the hand-free telephone answering machine includes a reception voice filter 103 for removing noise of a received voice signal, and a reception level detector for measuring the level of the voice signal input to the reception unit. 104, a microphone amplifier unit 101 for amplifying the micro-input, a transmission level detector 102 for measuring the level of the micro-input audio signal, and a transmission / reception attenuation by comparing the levels of the transmission voice and the received voice. Section 106/107, a voice level detector 111 for detecting a level of voice in the micro-input signal and checking whether or not it is above a certain level, and an automatic incoming call for sending the result received from the voice level detector to a mobile wireless telephone. Switching control unit 112, and a microphone for controlling the volume and voice signal for controlling the output of the speaker to convert the electrical signal into a speaker.

이와 같이 구성한 본 발명의 동작을 첨부한 도면 제2도를 참조하여 설명하면 다음과 같다.The operation of the present invention configured as described above will be described with reference to FIG. 2.

핸드프리로 인가된 수신 음성신호는 우선 수신 필터부(103)에서 필터링되어 수신 레벨 검출부(104)로 인가된다.The received voice signal applied to the hand free is first filtered by the reception filter unit 103 and applied to the reception level detection unit 104.

상기 수신 레벨 검출부(104)에서는 수신레벨을 검출하여 감쇄제어부(105)로 전달한다.The reception level detector 104 detects the reception level and transmits it to the attenuation controller 105.

또한 상기 수신필터부(103)에서 필터링된 수신신호는 수신 감쇄부(107)로 들어가 송신/수신 레벨의 크기에 따라 감쇄제어부(5)에 의해 감쇄기의 동작을 스위칭한다.In addition, the reception signal filtered by the reception filter unit 103 enters the reception attenuation unit 107 and switches the operation of the attenuator by the attenuation control unit 5 according to the magnitude of the transmission / reception level.

그리고 이 수신 음성신호는 스피커 앰프에서 증폭을 시킨 후 스피커를 통해 출력된다.The received voice signal is amplified by the speaker amplifier and then output through the speaker.

마이크로 입력된 음성신호는 전기적 신호로 변환되어 마이크 앰프(101)로 인가된다.The voice signal input into the microphone is converted into an electrical signal and applied to the microphone amplifier 101.

상기 마이크 앰프로 인가된 송신 음성신호는 일정한 이득으로 증폭되어 음성레벨 검출부(111)로 전달된다.The transmitted voice signal applied to the microphone amplifier is amplified with a constant gain and transmitted to the voice level detector 111.

증폭된 송신음성신호는 음성레벨 검출부로 인가되어 송신음성레벨을 검출하여 일정 레벨이상의 음성이 입력되면 이 결과를 자동 착신전환 제어부(112)에 알려준다.The amplified transmission voice signal is applied to the voice level detection unit to detect the transmission voice level and notifies the automatic call forwarding control unit 112 of the result when a voice of a predetermined level or more is input.

상기 자동 착신전환 제어부(112)에서는 이 내용을 이동 무선 전화기로 보내주면 이동 무선 전화기는 현재 전화기 상태가 외부에서 호출되었는지를 확인 후 자동으로 호출에 응답을 하게 된다.When the automatic call forwarding control unit 112 transmits the content to the mobile wireless telephone, the mobile wireless telephone automatically responds to the call after checking whether the current telephone state is externally called.

따라서 차량에서 이동 무선 전화기를 운용시 외부에서 전화가 걸려 올 때 자동으로 응답하도록 하기 위하여 이동 무선 전화기의 차량 핸드프리에서 일정레벨 이상의 음성신호가 마이크로 들어오면 인식하여 응답키를 동작시키지 않고 자동으로 응답되도록 하였다.Therefore, when the mobile cordless phone is operated in the vehicle, the phone handfree of the mobile cordless phone recognizes when a certain level of voice signal comes in from the handset of the mobile cordless phone and automatically responds without operating the response key. It was made.

이상과 같이 본 발명은 운전중에 외부에서 전화가 걸려 올때에 직접 통화키를 누르지 않고도 통화가 가능하게 함으로서 운전중에 외부에서 호출시 전화를 받기 위해 운전 부주의에 의한 사고를 방지 할 뿐아니라 사용자가 차량에서 편리하게 이동무선전화기의 핸드프리 기능을 사용할 수 있는 효과가 있다.As described above, the present invention enables to make a call without pressing a call key directly when a call is received from the outside while driving, thereby preventing accidents caused by inadvertent driving to receive a call when the call is made from outside while the user is in a vehicle. There is an effect that you can conveniently use the hands-free function of the mobile radio phone.

Claims (1)

핸즈프리장치에 있어서, 입력되는 음성신호를 검출하여 기준값 이상인 경우에 출력신호를 발생시키는 음성검출수단과; 상기 음성검출수단으로부터의 출력에 응답하여 핸즈프리장치에 접속된 통신단말기에 자동착신전환신호를 발생시키는 자동 착신전환 제어부를 포함하며; 상기 자동 착신전환 제어부는 상기 통신단말기가 호출상태에 있는 경우에만 인에이블되는 것을 특징으로 하는 핸즈프리장치.A hands-free device comprising: voice detection means for detecting an input voice signal and generating an output signal when the reference value is equal to or greater than a reference value; An automatic call forwarding control section for generating an automatic call forwarding signal to a communication terminal connected to the hands-free device in response to the output from the voice detection means; And the automatic call forwarding control unit is enabled only when the communication terminal is in a call state.
KR1019930031482A 1993-12-30 1993-12-30 Automatic answering unit in handsfree phone KR100304531B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010025174A (en) * 2000-07-29 2001-04-06 양현민 Automatic destination method and destination circuit of hand-free apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100435686B1 (en) * 2001-10-25 2004-06-12 현대자동차주식회사 Continuously variable transmission type oil pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010025174A (en) * 2000-07-29 2001-04-06 양현민 Automatic destination method and destination circuit of hand-free apparatus

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