KR20000074051A - Automatic selection circuit of radio in a car audio and method thereof - Google Patents

Automatic selection circuit of radio in a car audio and method thereof Download PDF

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Publication number
KR20000074051A
KR20000074051A KR1019990017742A KR19990017742A KR20000074051A KR 20000074051 A KR20000074051 A KR 20000074051A KR 1019990017742 A KR1019990017742 A KR 1019990017742A KR 19990017742 A KR19990017742 A KR 19990017742A KR 20000074051 A KR20000074051 A KR 20000074051A
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South Korea
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broadcast
receiver
radio
microcomputer
control signal
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KR1019990017742A
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Korean (ko)
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최순식
이동수
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김영환
현대전자산업 주식회사
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Priority to KR1019990017742A priority Critical patent/KR20000074051A/en
Publication of KR20000074051A publication Critical patent/KR20000074051A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE: An automatic broadcast selection circuit in radio set of car audio and method thereof are provided to automatically select and receive a desired radio broadcast (AM or FM radio) by simple operation of a button while receiving a radio broadcast (AM or FM radio) with a car audio. CONSTITUTION: In an automatic broadcast selection circuit in radio set of car audio and method thereof, the method is characterized in that AM radio broadcast received at present is heard to a listener for a desired time if power is applied to an AM radio receiver by pressing a scan button under a state of receiving FM radio broadcast; if the AM radio broadcast is a broadcast to listen, the AM radio broadcast is heard by pressing the scan button for one or more second; if the AM radio broadcast is not a broadcast to listen, the other AM radio broadcast of a different radio frequency is selected by not pressing the scan button for one or more second; at that time, FM radio broadcast that is a radio broadcast heard until the AM radio broadcast of the other broadcast frequency is selected is allowed to be continuously received and heard. Accordingly, since any broadcast to listen is automatically selected concurrently with confirmation of a radio broadcast not yet heard one by one by simple operation of a button under the state that a radio broadcast selected and heard previously with a car audio, a broadcast to listen is conveniently selected and heard without troublesome operation of a button for selecting a radio broadcast.

Description

차량 오디오내 라디오의 자동 선국회로 및 방법 {Automatic selection circuit of radio in a car audio and method thereof}Automatic selection circuit of radio in a car audio and method

본 발명은 차량 오디오(Car Audio)의 라디오(Radio) 방송중 FM(Frequency Modulation)(또는 AM(Amplitude Modulation)) 방송을 청취하고 있는 상태에서 간단한 버튼 조작으로 원하는 AM(또는 FM) 방송을 자동으로 선국하여 청취할 수 있도록 한 차량 오디오내 라디오의 자동 선국회로 및 방법에 관한 것이다.The present invention automatically tunes a desired AM (or FM) broadcast by simple button operation while listening to FM (or Frequency Modulation) (or AM (Amplitude Modulation)) broadcasts during radio broadcasting of car audio. The present invention relates to an automatic tuning circuit and a method for radio in a vehicle audio.

일반적으로 차량에는 오디오가 구비되어 있어, 운전자가 차량을 운전할 경우에 오디오에서 출력되는 라디오 방송 및 각종 음악을 청취하면서 경쾌하게 운전하여 안전 운전을 할 수 있도록 하고, 차량내에서 운전하지 않고 휴식을 취할 경우에 오디오에서 출력되는 라디오 방송 및 각종 음악을 청취하여 피로감을 줄일 수 있도록 하고 있다.In general, the vehicle is equipped with audio, so that when the driver drives the vehicle, the driver can drive lightly while listening to the radio broadcast and various music output from the audio, and drive safely, and take a rest without driving in the vehicle. In this case, it is possible to reduce fatigue by listening to radio broadcasts and various music output from audio.

종래의 차량 오디오에서는 라디오 방송중 FM 방송을 청취하고 있는 상태에서 AM 방송을 청취하고자 할 경우 먼저 AM 모드 변환 버튼을 눌러 FM 모드에서 AM 모드로 변환하고, 이어 AM 모드에서 방송 주파수별로 설정된 버튼을 누르거나 씨크(Seek) 기능 버튼을 눌러 원하는 방송국의 AM 방송을 선국하여 청취하였다.In the conventional car audio, if you want to listen to AM broadcast while listening to the FM broadcast during radio broadcasting, first press the AM mode switch button to switch from FM mode to AM mode, and then press the button set for each broadcasting frequency in AM mode or Press the Seek function button to tune into the AM station of the desired station.

그러나, 상기와 같은 종래의 라디오 방송 선국방법은 FM 방송 청취도중 AM 방송을 청취하고자 할 경우 반드시 몇 차례의 번거로운 버튼 조작을 거쳐야 하고, 또한 AM 방송을 선국하는 도중 원하는 내용이 방송되지 않을 경우 원래 청취하던 FM 방송으로 복귀하고자 할 경우 역시 상기와 같은 몇 차례의 번거로운 버튼 조작을 거쳐야만 하는 문제점이 있었다.However, in the conventional radio broadcasting tuning method as described above, if you want to listen to AM broadcasting while listening to FM broadcasting, you must go through several cumbersome button operations, and if the desired contents are not broadcasted while tuning AM broadcasting, the original listening is performed. If the user wants to return to the FM broadcast, there has been a problem of having to go through several cumbersome button operations as described above.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출한 것으로서, 그 목적은 차량 오디오의 라디오 방송중 FM(또는 AM) 방송을 청취하고 있는 상태에서 간단한 버튼 조작으로 원하는 AM(또는 FM) 방송을 자동으로 선국하여 청취할 수 있도록 한 차량 오디오내 라디오의 자동 선국회로 및 방법을 제공하는 데에 있다.The present invention has been made to solve the above problems, the object of which is to automatically tune the desired AM (or FM) broadcast with a simple button operation in the state of listening to the FM (or AM) broadcast of radio broadcasting of the vehicle audio. The present invention provides an automatic tuning circuit and a method for radio in a vehicle audio.

도 1은 본 발명에 의한 차량 오디오내 라디오의 자동 선국회로의 블록 구성도,1 is a block diagram of an automatic tuning circuit of a radio in vehicle audio according to the present invention;

도 2는 본 발명에 의한 차량 오디오내 라디오의 자동 선국회로의 동작을 보인 흐름도.2 is a flowchart showing the operation of the automatic tuning circuit of the radio in the vehicle audio according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1 : FM 수신기 2 : AM 수신기1: FM receiver 2: AM receiver

3 : 마이컴Ant : 안테나3: micom antenna: antenna

TR1,TR1',TR2,TR2' : 트랜지스터TR1, TR1 ', TR2, TR2': Transistor

이러한 목적을 달성하기 위한 본 발명의 차량 오디오내 라디오의 자동 선국회로 및 방법은, FM 방송을 수신하여 청취하고 있는 상태에서 스캔(Scan) 버튼을 눌러 AM 수신기에 전원을 인가하여 현재 수신되는 AM 방송을 일정시간 청취자에게 들려주고, 상기 방송이 희망하는 내용인 경우에는 스캔 버튼을 1초 이상 눌러 상기 AM 방송을 청취하도록 하고, 상기 방송이 희망하는 내용이 아닌 경우에는 스캔 버튼을 1초 이상 누르지 않아 다른 방송 주파수의 AM 방송을 선국하도록 하며, 이때 다른 방송 주파수의 AM 방송을 선국하여 출력될 때까지 청취하고 있던 FM 방송을 계속해서 수신하여 청취하도록 함을 특징으로 한다.In order to achieve the above object, the automatic tuning circuit and the method of the radio in the vehicle audio of the present invention, by pressing the Scan button in the state of receiving and listening to the FM broadcast AM currently received by applying power to the AM receiver Listen to the broadcaster for a certain period of time and press the scan button for more than 1 second to listen to the AM broadcast if the broadcast is the desired content, or press the scan button for more than 1 second if the broadcast is not the desired content. Therefore, it is possible to tune to AM broadcasts of different broadcast frequencies, and at this time, it is characterized in that it continuously receives and listens to FM broadcasts which have been listening until the AM broadcasts of different broadcast frequencies are tuned and output.

이하, 첨부된 도면을 참고하여 본 발명에 의한 차량 오디오내 라디오의 자동 선국회로 및 방법을 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the automatic tuning circuit and method of the radio in the vehicle audio according to the present invention.

도 1은 본 발명에 의한 차량 오디오내 라디오의 자동 선국회로의 블록 구성도로서, FM 전원을 인가받아 안테나(Ant)를 통한 FM 방송신호를 주파수 대역별로 수신하여 마이컴의 제어신호에 따라 선국된 FM 방송을 출력하는 FM 수신기(1)와, AM 전원을 인가받아 안테나(Ant)를 통한 AM 방송신호를 주파수 대역별로 수신하여 마이컴의 제어신호에 따라 선국된 AM 방송을 출력하는 AM 수신기(2)와, 상기 FM 수신기(1) 또는 AM 수신기(2)의 방송 선국 동작을 제어하여 원하는 FM 방송 또는 AM 방송을 출력하도록 제어하는 마이컴(MICOM)(3)과, 상기 마이컴(3)에서 출력되는 전원 제어신호에 따라 온/오프 동작하여 상기 FM 수신기(1)로 FM 전원을 공급하는 트랜지스터(TR1,TR1')와, 상기 마이컴(3)에서 출력되는 전원 제어신호에 따라 온/오프 동작하여 상기 AM 수신기(2)로 AM 전원을 공급하는 트랜지스터(TR2,TR2')로 구성된다.1 is a block diagram of an automatic tuning circuit of a radio in a car audio according to the present invention, and receives FM broadcast signals through an antenna Ant for each frequency band by receiving FM power and is tuned according to a control signal of a microcomputer. FM receiver 1 for outputting broadcasts, AM receiver 2 for receiving AM power and receiving AM broadcast signals through an antenna antenna for each frequency band, and outputting tuned AM broadcasts according to a control signal of a microcomputer; And a microcomputer (MICOM) 3 for controlling the broadcast tuning operation of the FM receiver 1 or the AM receiver 2 to output a desired FM broadcast or AM broadcast, and a power control output from the microcomputer 3. Transistors (TR1, TR1 ') for supplying FM power to the FM receiver (1) by operating on / off in response to a signal, and on / off operation according to a power control signal output from the microcomputer (3). AM power supply to (2) It is composed of a transistor (TR2, TR2 ').

상기와 같이 구성된 본 발명에 의한 차량 오디오내 라디오의 자동 선국회로의 동작을 도 2의 흐름도를 참고로 하여 설명하면 다음과 같다.The operation of the automatic tuning circuit of the radio in the vehicle audio according to the present invention configured as described above will be described with reference to the flowchart of FIG. 2.

먼저, FM 수신기(1)를 통해 FM 방송을 수신하여 청취하고 있는 상태에서(S1) 스캔 버튼을 1초간 누르면(S2) AM 수신기(2)에 전원이 인가된다(S3).First, while receiving and listening to FM broadcast through the FM receiver 1 (S1), when the scan button is pressed for 1 second (S2), power is applied to the AM receiver 2 (S3).

즉, 상기 1초간 누르는 스캔 버튼의 신호에 따라 마이컴(3)에서 하이의 전원 제어신호를 트랜지스터(TR2')로 출력하여 트랜지스터(TR2')가 온 동작하고, 이어 트랜지스터(TR2) 역시 온 동작하여 AM 전원을 상기 AM 수신기(2)에 인가하게 되는 것이다.That is, in response to the signal of the scan button pressed for one second, the microcomputer 3 outputs a high power control signal to the transistor TR2 'so that the transistor TR2' is turned on and then the transistor TR2 is turned on. AM power is applied to the AM receiver 2.

이어, 상기 동작과 동시에 마이컴(3)에서 출력되는 로우의 전원 제어신호에 따라 트랜지스터(TR1',TR1)가 오프 동작하여 상기 FM 수신기(1)에 인가되는 FM 전원을 차단시킴으로써 FM 수신기(1)의 동작을 중지시킨다(S4).Subsequently, in response to the operation, the transistors TR1 'and TR1 are turned off in response to a low power control signal output from the microcomputer 3 to cut off the FM power applied to the FM receiver 1. Stop the operation (S4).

이후, 마이컴(3)에서는 AM 수신기(2)에서 수신되는 AM 방송을 약 5초간 출력하여(S5) 청취자에게 들려주어 청취자가 희망하는 내용의 AM 방송인지를 판단하도록 한다(S6).Thereafter, the microcomputer 3 outputs the AM broadcast received by the AM receiver 2 for about 5 seconds (S5) and listens to the listener to determine whether the AM broadcast is the content desired by the listener (S6).

상기 단계(S6)에서 현재 AM 수신기(2)를 통해 수신되는 AM 방송이 희망하는 내용인 경우에는 스캔 버튼을 1초 이상 눌러 마이컴(3)의 전원 제어신호에 따라 AM 수신기(2)를 동작시켜 현재 수신되는 AM 방송을 청취하도록 한다(S7).If the AM broadcast currently received through the AM receiver 2 in step S6 is desired, press the scan button for at least 1 second to operate the AM receiver 2 according to the power control signal of the microcomputer 3. In operation S7, a user may listen to an AM broadcast received.

만약, 상기 단계(S6)에서 현재 AM 수신기(2)를 통해 수신되는 AM 방송이 희망하는 내용이 아닌 경우에는 스캔 버튼을 1초 이상 누르지 않아 마이컴(3)의 제어신호에 따라 희망하는 내용의 방송이 출력될 때까지 다른 방송 주파수의 AM 방송을 선국하도록 한다(S8).If the AM broadcast currently received through the AM receiver 2 is not the desired content in the step S6, the user does not press the scan button for more than 1 second and broadcasts the desired content according to the control signal of the microcomputer 3. The AM broadcast of the other broadcast frequency is tuned until this is output (S8).

이때, 다른 방송 주파수의 AM 방송이 선국되어 출력될 때까지 마이컴(3)의 제어신호에 따라 현재 청취하고 있던 FM 수신기(1)의 FM 방송을 계속해서 수신하여 청취하게 된다.At this time, the FM broadcast of the FM receiver 1 currently being listened to is continuously listened to and listened to according to the control signal of the microcomputer 3 until AM broadcast of another broadcast frequency is tuned and output.

여기서, 상기 설명은 FM 방송 청취도중 AM 방송을 청취하고자 할 경우의 자동 선국방법을 설명한 것으로, AM 방송 청취도중 FM 방송을 청취하고자 하는 경우도 마찬가지의 동작으로 이루어짐에 따라 상세한 설명을 약하도록 한다.Here, the description will be made of the automatic tuning method when the AM broadcast is to be listened to while listening to the FM broadcast. When the FM broadcast is to be listened to while listening to the AM broadcast, the same operation is performed.

이상, 상기 설명에서와 같이 본 발명은, 차량 오디오의 라디오 방송중 청취중인 방송 상태에서 간단한 버튼 조작으로 비청취중인 방송을 일일이 확인하여 원하는 내용의 방송으로 자동 선국하여 청취할 수 있어 방송 선국시 번거롭고도 잦은 버튼 조작없이도 원하는 방송을 편리하게 청취할 수 있게 되는 효과가 있다.As described above, the present invention can check the non-listening broadcast by simple button operation in the state of listening to the radio broadcasting of the vehicle audio, and automatically tune in to the broadcast of the desired contents, which is cumbersome at the time of the broadcasting tuning. There is an effect that it is possible to listen to the desired broadcast conveniently without frequent button operation.

Claims (2)

FM 전원을 인가받아 안테나(Ant)를 통한 FM 방송신호를 주파수 대역별로 수신하여 마이컴의 제어신호에 따라 선국된 FM 방송을 출력하는 FM 수신기(1)와, AM 전원을 인가받아 안테나(Ant)를 통한 AM 방송신호를 주파수 대역별로 수신하여 마이컴의 제어신호에 따라 선국된 AM 방송을 출력하는 AM 수신기(2)와, 상기 FM 수신기(1) 또는 AM 수신기(2)의 방송 선국 동작을 제어하여 원하는 FM 방송 또는 AM 방송을 출력하도록 제어하는 마이컴(3)과, 상기 마이컴(3)에서 출력되는 전원 제어신호에 따라 온/오프 동작하여 상기 FM 수신기(1)로 FM 전원을 공급하는 트랜지스터(TR1,TR1')와, 상기 마이컴(3)에서 출력되는 전원 제어신호에 따라 온/오프 동작하여 상기 AM 수신기(2)로 AM 전원을 공급하는 트랜지스터(TR2,TR2')로 구성됨을 특징으로 하는 차량 오디오내 라디오의 자동 선국회로.FM receiver 1 for receiving FM broadcast signal through the antenna Ant for each frequency band by receiving the FM power and outputting the FM broadcast tuned according to the control signal of the microcomputer, and receiving the antenna Ant by receiving AM power. Receives the AM broadcast signal through the frequency band through the AM receiver (2) for outputting the AM broadcast tuned in accordance with the control signal of the microcomputer, and controlling the broadcast tuning operation of the FM receiver (1) or AM receiver (2) A microcomputer 3 for controlling to output an FM broadcast or an AM broadcast, and a transistor TR1 for supplying FM power to the FM receiver 1 by turning on / off according to a power control signal output from the microcomputer 3; TR1 ') and transistors (TR2, TR2') for supplying AM power to the AM receiver (2) by operating on / off in accordance with a power control signal output from the microcomputer (3). Auto Tuning on my radio . FM 수신기(1)를 통해 FM 방송을 수신하여 청취하고 있는 상태에서 스캔 버튼을 1초간 누를 경우 마이컴(3)에서 출력되는 하이의 전원 제어신호에 따라 AM 수신기(2)에 전원이 인가되는 제1단계와, 상기 제1단계와 동시에 마이컴(3)에서 출력되는 로우의 전원 제어신호에 따라 FM 수신기(1)에 인가된 FM 전원을 차단하여 FM 수신기(1)의 동작을 중지시키는 제2단계와, 상기 제2단계 수행 후, AM 수신기(2)에서 수신되는 AM 방송을 일정 시간 청취자에게 들려주어 청취자가 희망하는 내용의 AM 방송인지를 판단하는 제3단계와, 상기 제3단계에서 AM 수신기(2)를 통해 수신되는 AM 방송이 희망하는 내용인 경우라면 스캔 버튼을 1초 이상 눌러 마이컴(3)의 전원 제어신호에 따라 AM 수신기(2)를 동작시켜 현재 수신되는 AM 방송을 청취하도록 하는 제4단계와, 상기 제3단계에서 AM 수신기(2)를 통해 수신되는 AM 방송이 희망하는 내용이 아닌 경우라면 스캔 버튼을 1초 이상 누르지 않아 마이컴(3)의 제어신호에 따라 희망하는 내용의 방송이 출력될 때까지 다른 방송 주파수의 AM 방송을 선국하도록 하는 제5단계와, 상기 제5단계 수행시 다른 방송 주파수의 AM 방송이 선국되어 출력될 때까지 마이컴(3)의 제어신호에 따라 현재 청취하고 있던 FM 수신기(1)의 FM 방송을 계속해서 수신하여 청취하는 제6단계를 포함하여 이루어지는 것을 특징으로 하는 차량 오디오내 라디오의 자동 선국방법.When the scan button is pressed for 1 second while the FM broadcast is received through the FM receiver 1, the first power is applied to the AM receiver 2 according to the high power control signal output from the microcomputer 3. And a second step of stopping the operation of the FM receiver 1 by cutting off the FM power applied to the FM receiver 1 according to the power control signal of the row output from the microcomputer 3 at the same time as the first step; After performing the second step, a third step of determining whether the AM broadcast received by the AM receiver 2 to the listener for a predetermined time to determine whether the AM broadcast of the desired content, and in the third step the AM receiver ( If the AM broadcast received through 2) is desired, press the scan button for at least 1 second to operate the AM receiver 2 according to the power control signal of the microcomputer 3 to listen to the AM broadcast currently received. Step 4 and AM in the third step If the AM broadcast received through the new device 2 is not the desired content, the AM button of another broadcast frequency is not pressed until the broadcast of the desired content is output according to the control signal of the microcomputer 3 without pressing the scan button for 1 second or more. The fifth step of tuning the broadcast, and the FM broadcast of the FM receiver 1 currently being listened to according to the control signal of the microcomputer 3 until the AM broadcast of the other broadcast frequency is tuned and output when the fifth step is performed. And a sixth step of continuously receiving and listening to the audio in the vehicle audio.
KR1019990017742A 1999-05-18 1999-05-18 Automatic selection circuit of radio in a car audio and method thereof KR20000074051A (en)

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KR1019990017742A KR20000074051A (en) 1999-05-18 1999-05-18 Automatic selection circuit of radio in a car audio and method thereof

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