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KR940003749B1 - Radio system having auto turning function - Google Patents

Radio system having auto turning function Download PDF

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Publication number
KR940003749B1
KR940003749B1 KR1019910011216A KR910011216A KR940003749B1 KR 940003749 B1 KR940003749 B1 KR 940003749B1 KR 1019910011216 A KR1019910011216 A KR 1019910011216A KR 910011216 A KR910011216 A KR 910011216A KR 940003749 B1 KR940003749 B1 KR 940003749B1
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South Korea
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level
parts
frequency
synthesizing
unit
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KR1019910011216A
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KR930003579A (en
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신영호
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삼성전자 주식회사
김광호
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/10Means associated with receiver for limiting or suppressing noise or interference

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

내용 없음.No content.

Description

자동선국변경이 가능한 라디오시스템Radio system with automatic tuning

제1도는 종래의 라디오시스템 블럭도.1 is a block diagram of a conventional radio system.

제2도는 본 발명의 라디오시스템 블럭도.2 is a block diagram of a radio system of the present invention.

본 발명은 라디오시스템에 관한 것으로 , 특히 지역이동에 의해 현재 청취중인 라디오방송의 가청범위를 벗어났을 경우 더욱 양호한 방송의 청취를 위해 자동으로 선국변경이 실현되도록 한 라디오시스템에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio system, and more particularly, to a radio system in which a preset change is automatically realized for better listening to a radio station when it is out of an audible range of a radio station currently being listened to by local movement.

제1도에 도시한 종래의 라디오시스템은 안테나에 수신된 전파를 디지탈 동조 시스템(Digital Tuning System : 이하 DTS 라함) 조절부(70)의 명령에 따라 입력동조공진부(10)에서 특정한 원하는 주파수의 신호를 선택하여 고주파증폭부(20)에서 증폭한 후 혼합부(30)에서 이 증폭된 고주파 신호와 국부발진부(40)에서 발생한 발진신호를 혼합하여 중간주파수필터부(50)를 통과시키면 중간주파수가 발생하고 중간주파수증폭부(60)에서 이 신호를 증폭하여 검파부(80)에 입력하고 이 검파수(80)에서 원하는 음성신호(Audio signal)로 출력된다.In the conventional radio system shown in FIG. 1, the radio wave received by the antenna is controlled by the input tuning resonance unit 10 according to the command of the digital tuning system (DTS) control unit 70. After selecting a signal and amplifying it in the high frequency amplification part 20, the mixing part 30 mixes the amplified high frequency signal and the oscillation signal generated in the local oscillation part 40 and passes the intermediate frequency filter part 50. Is generated and amplified by the intermediate frequency amplifier 60 and input to the detector 80, and is output as a desired audio signal from the detector 80.

이와 같은 시스템에서 DTS조절부(70)는 고주파증폭부(20)에서 넘어온 신호를 주파수 카운팅하여 미리 선정한 주파수와 동일한지 동일하지 않은지를 판단해야 되는데 이때 중간주파신호를 사용한다. 만약 미리 선택해놓은 주파수와 입력신호가 다를경우 입력 동조공진부(10)와 국부발진부(30)에 신호를 계속해서 내보내어 트랙킹(tracking)한다.In such a system, the DTS control unit 70 frequency-counts the signal from the high frequency amplification unit 20 to determine whether it is the same as or not equal to a preselected frequency. In this case, an intermediate frequency signal is used. If the preselected frequency and input signal are different, the signals are continuously sent to the input tuning resonance unit 10 and the local oscillator 30 for tracking.

이와 같은 DTS조절부(70)가 설치된 라디오와 시스템은 주파수에 해당하는 숫자의 기억이 가능하여 특정방송국의 주파수를 기억시켜놓고 필요에 따라 쉽게 그 방송을 동조할 수도 있고 연속적으로 방송국의 주파수를 검색하여 수신가능한 주파수를 찾아내는등 많은 장점이 있다. 그러나, 한 방송을 청취하면서 다른 방송의 수신상태를 검색할 수 없으므로 지역 이동시 현재 청취중인 방송의 수신영역을 벗어났을 경우 다시 수신주파수를 찾아 동조시켜야 하는 문제가 발생한다.The radio and the system in which the DTS control unit 70 is installed can store a number corresponding to a frequency so that the frequency of a specific broadcasting station can be stored and the broadcasting can be easily tuned as necessary, or the frequency of the broadcasting station can be searched continuously. There are many advantages such as finding a receivable frequency. However, when listening to one broadcast, the reception state of the other broadcast cannot be retrieved. Therefore, when moving out of the region, when the region is out of the reception region of the currently listening broadcast, a problem arises in that the receiving frequency needs to be found and tuned again.

따라서, 본 발명의 목적은 지역이동시 현재 청취중인 방송을 계속 수신하면서 동시에 내부적으로 가장 수신상태가 좋은 주파수를 찾아내어 청취자가 원할시 자동으로 주파수이동을 가능하게 하는 라디오시스템을 제공함에 있다.Accordingly, an object of the present invention is to provide a radio system capable of automatically shifting frequency when a listener wants to find a frequency which is best received internally while continuously receiving a broadcast currently being listened to during local movement.

이하, 본 발명을 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

제2도는 본 발명에 따른 블럭도로서, 제1, 제2동조공진부(10,100)와 제1, 제2고주파증폭부(20,200)와, 제1, 제2혼합부(30,300)와 제1, 제2국부발진부(40,400)와 제1, 제2중간주파필터부(50,500)와 제1, 제2중간주파수증폭부(60,600)와 검파부(80) 및 DTS조절부(70)로 이루어진 라디오시스템에 있어서, 상기 제1, 제2동조공진부(10,100)와 제1, 제2고주파증폭부(20,200) 및 제1, 제2중간주파수증폭부(60,600)의 레벨을 검출하기 위해 그 각각에 연결된 제1, 2, 3, 4, 5, 6레벨검파부(1, 2, 3, 4, 5, 6)와, 상기 제1, 3, 5레벨검파부(1, 3, 5)에서 검출된 레벨을 합성하는 제1레벨합성부(7)와 상기 제2, 4, 5레벨검파부(2, 4, 6)에서 검출된 레벨을 합성하는 제2레벨합성부(8)와 상기 제1, 2레벨합성부(7, 8)의 출력신호를 서로 비교하는 레벨비교부(9)가 추가됨으로써 자동선국변경이 가능하도록 구성되어 있다.2 is a block diagram according to the present invention, wherein the first and second tuning resonance parts 10 and 100, the first and second high frequency amplifier parts 20 and 200, and the first and second mixing parts 30 and 300 and the first and second Radio system consisting of second local oscillator 40,400, first and second intermediate frequency filter unit 50,500, first and second intermediate frequency amplifier 60,600, detector 80 and DTS control unit 70 In the present invention, the first and second tuning resonance parts 10 and 100 and the first and second high frequency amplifier parts 20 and 200 and the first and second intermediate frequency amplifier parts 60 and 600 are connected to each of them. The first, second, third, fourth, fifth, and sixth level detectors 1, 2, 3, 4, 5, and 6 and the first, third, and fifth level detectors 1, 3, and 5 are detected. The first level synthesizing unit 7 synthesizing the levels and the second level synthesizing unit 8 synthesizing the levels detected by the second, fourth and fifth level detectors 2, 4 and 6 and the first, The level comparison section 9, which compares the output signals of the two-level combining sections 7 and 8 with each other, is added so that automatic channel selection is possible.

상기와 같은 구성을 갖는 본 발명의 동작 및 작용효과를 살펴보면, 안테나에 수신되 전파들중 가장 양호한 방송전파를 선국할 경우 제1동조회로부(10)에서는 DTS조절부(70)의 제어에 의해 현재 청취중인 방송의 특정주파수를 선택하여 동조시킨후 제1고주파증폭부(20)에서 증폭시키고 제1혼합부(30)에서는 제1국부발진부(40)에서 발생한 발진신호와 증폭된 신호를 혼합한다. 이때, 현재 청취중인 방송의 중간주파수와 입력신호의 주파수에 차이가 있을 경우 DTS조절부(70)에서 제1동조회로부(10)와 제1국부발진부(40)에 신호를 가하여 계속해서 중간주파수로 추적해간다.Looking at the operation and effect of the present invention having the configuration as described above, when tuning the best broadcast wave received from the antenna received by the first tuning circuit unit 10 under the control of the DTS control unit 70 currently After selecting and tuning a specific frequency of the broadcast being listened to, the first high frequency amplifier 20 amplifies the first mixing unit 30 and the oscillation signal generated by the first local oscillator 40 and the amplified signal. At this time, if there is a difference between the frequency of the intermediate signal and the input signal of the broadcast currently being listened to, the DTS control unit 70 applies a signal to the first tuning circuit unit 10 and the first local oscillator 40 to continue to the intermediate frequency. Trace it.

그후 혼합된 신호를 제1중간주파수필터부(50) 및 제1중간주파수증폭부(60)를 통해 검파부(80)에서 음성신호로 출력되고, 현재 청취중인 방송의 레벨을 제1동조회로부(10)와 제1고주파증폭부(20) 및 제1중간주파수증폭부(60) 각각에서 제1, 3, 5레벨검파부(1, 3, 5)로 입력하여 검파한다. 계속해서 제1레벨합성부(7)에서는 제1, 3, 5레벨검파부(1, 3, 5)에서 입력된 레벨신호를 합성한다.Thereafter, the mixed signal is output as a voice signal from the detector 80 through the first intermediate frequency filter unit 50 and the first intermediate frequency amplifier unit 60, and the level of the broadcast currently being listened is measured by the first tuning circuit unit ( 10) and the first high frequency amplifier 20 and the first intermediate frequency amplifier 60 are input to the first, third, and fifth level detectors 1, 3, and 5, respectively, and detected. Subsequently, the first level synthesizing unit 7 synthesizes the level signals inputted from the first, third and fifth level detectors 1, 3 and 5.

이때, 제2동조공진부(100)에서는 DTS조절부(70)에 의해 계속해서 주파수를 가변하여 수신된 전파중 가장 양호한 방송전파를 선택하여 동조시킨후 그 출력의 일단을 제2고주파증폭부(22)에 입력시키고 동시에 그 타단을 제4레벨검파부(4)에 입력시켜 레벨을 검파한다.At this time, the second tuning resonance unit 100 continuously varies the frequency by the DTS adjusting unit 70 to select and tune the best broadcast radio wave among the received radio waves, and then ends one end of the output of the second high frequency amplifier unit ( And input the other end to the fourth level detector 4 to detect the level.

제2고주파증폭부(200)에 입력된 신호는 증폭되고 증폭된 신호는 상기와 같은 과정을 통해 제2중간주파수증폭부(200)에서 증폭된 후 DTS조절부(70)와 제6레벨검파부(6)로 각각 입력된다. 제2, 4, 6레벨검파부(2, 4, 6)에서 검파된 레벨신호는 제2레벨합성부(8)에서 합성된후 상기 제1레벨합성부(7)의 신호와 함께 레벨비교부(9)에 입력된다. 레벨비교부(9)에서는 상기 제1레벨합성부(7)와 제2레벨합성부(8)의 출력신호를 서로 비교하여 제2레벨합성부(8)의 신호가 클 경우에는 청취자에게 디스플레이를 통하여 그 주파수를 전하거나 또는 기능버튼을 눌러서 새로이 검색된 방송으로 절환하도록 하며 상기 제1레벨 합성신호 즉 현재 청취중인 방송이 강할 경우에는 계속해서 검색하여 현재의 방송보다 강한 전파가 검색될때까지 상기와 같은 과정이 계속된다.The signal input to the second high frequency amplifier 200 is amplified and the amplified signal is amplified by the second intermediate frequency amplifier 200 through the above process, and then the DTS controller 70 and the sixth level detector. Inputted by (6), respectively. The level signal detected by the second, fourth, and sixth level detectors 2, 4, and 6 is synthesized by the second level synthesizer 8, and then the level comparator with the signal of the first level synthesizer 7 It is input in (9). The level comparator 9 compares the output signals of the first level synthesizer 7 and the second level synthesizer 8 to each other and displays a display to the listener when the signal of the second level synthesizer 8 is large. It transmits the frequency or presses the function button to switch to the newly searched broadcast. If the first level synthesized signal, that is, the broadcast currently being listened to is strong, the search is continued until the radio wave stronger than the current broadcast is searched. The process continues.

한편, 지역이동시 현재 청취중인 방송국과 동일한 방송국이 지역주파수만 다를경우 그 주파수를 찾아 같은 방송국을 계속 청취하고자 할때는, 시스템의 전반적인 동작은 상기와 같은 흐름에 의해 이루어지며 상기 DTS조절부(70)의 내부메모리(11)에 각 방송의 지역 주파수들의 조합 및 행렬을 기억시켜 놓는다. 이지역별 방송국 주파수 행렬조합의 예를 아래의 표 1에 나타내었다.On the other hand, when the same station is currently listening to the same station when the local movement is different only in the local frequency to find the frequency and continue to listen to the same station, the overall operation of the system is made by the flow as described above and the DTS control unit 70 The internal memory 11 stores a combination and matrix of local frequencies of each broadcast. Table 1 below shows an example of a combination of station frequency matrices for each region.

[표 1]TABLE 1

현재 청취중인 방송을 X방송이라 하면 X방송을 상기와 같은 과정에 의해 계속 음성신호로 출력하면서 각단의 레벨검파부(2, 4, 6)에서 DTS 조절부내의 메모리된 주파수(fXA…fXB, fXC)를 계속 반복해서 검색한다. 전파의 가청 영역내에서 두개 이상의 방송이 동일 주파수를 사용하지 못하게 되어 있기 때문에 지역을 달리하고 주파수를 동일하게 사용해도 무방하다.If the currently listening broadcast is called X broadcast, the X frequency is continuously output as a voice signal by the above process, and the memorized frequencies (f XA ... f XB ) in the DTS control unit at the level detectors 2, 4 and 6 of each stage are output. , f XC ) repeatedly. Since two or more broadcasts cannot use the same frequency in the audible region of the radio wave, the regions may be different and the same frequency may be used.

따라서, 검색된 주파수(fXA…fXB, fXC)중 그 지역에서 가장 양호하게 청취할 수 있는 방송전파의 레벨을 제2레벨합성부(8)에서 합성한 후 레벨비교부(9)에서 제1레벨합성부(7)에서 현재 청취중인 방송과 비교하여 검색된 신호가 클경우 그 주파수로 변경할 수 있다.Therefore, the second level synthesizing section 8 synthesizes the levels of the broadcast frequencies that can be best heard in the region among the found frequencies f XA ... F XB , f XC . If the searched signal is large compared to the broadcast currently being listened to by the first-level synthesizer 7, the frequency can be changed.

이와 같은 본 발명을 지역이동이 심한 자동차용 라디오에 채택하면 고속도로를 달리다가 각 방송의 경계면을 벗어났을 경우 라디오를 재동작시키기 위한 채널 조작으로 인해 운전자의 주의를 산만하게 함으로 인한 사고를 방지할 수 있고 사용자의 조작없이 자동으로 선국변경이 가능하여 보다 편리하며, 이동체 무선장치등에도 효과적으로 이용할 수 있다.By adopting the present invention to a car radio with high local mobility, it is possible to prevent an accident caused by distracting the driver due to a channel operation for reactivating the radio when the highway is out of the boundary of each broadcast while running on the highway. It is possible to change the station automatically without user's operation.

Claims (1)

제1, 제2동조공진부(10, 100)와 제1, 제2고주파증폭부(20, 200)와 제1, 제2혼합부(30, 300)와 제1, 제2국부발진부(40, 400)와 제1, 제2중간주파수필터부(50, 500)와 제1, 제2중간주파수증폭부(60, 600)와 검파부(80) 및 디지탈동조시스템조절부(70)로 이루어진 라디오시스템에 있어서, 상기 제1, 제2동조공진부(10, 100)와 제1, 2고주파증폭부(20, 200) 및 제1, 2중간주파수증폭부(60, 600)의 레벨을 검출하기 위해 그 각각에 연결된 제1, 2, 3, 4, 5, 6레벨검파부(1, 2, 3, 4, 5, 6)와, 상기 제1, 3, 5레벨검파부(1, 3, 5)에서 검출된 레벨을 합성하는 제1레벨합성부(7)와 상기 제2, 4, 6레벨검파부(2, 4, 6)에서 검출된 레벨을 합성하는 제2레벨합성부(8)와 상기 제1, 2레벨합성부(7, 8)의 출력신호를 서로 비교하는 레벨비교부(9)가 추가됨으로써 자동선국변경이 가능하도록한 라디오시스템.The first and second tuning resonance parts 10 and 100, the first and second high frequency amplifier parts 20 and 200, the first and second mixing parts 30 and 300, and the first and second local oscillation parts 40 400, and the first and second intermediate frequency filter units 50 and 500, the first and second intermediate frequency amplifier units 60 and 600, the detector unit 80, and the digital tuning system control unit 70. In the radio system, the levels of the first and second tuning resonance parts 10 and 100, the first and second high frequency amplifier parts 20 and 200, and the first and second intermediate frequency amplifier parts 60 and 600 are detected. First, second, third, fourth, fifth, and sixth level detectors 1, 2, 3, 4, 5, and 6 connected to each other, and the first, third, and fifth level detectors 1, 3, respectively. , 5) first level synthesizing unit 7 for synthesizing the level detected by the second level synthesizing unit 8 for synthesizing the level detected by the second, fourth and sixth level detectors 2, 4 and 6; ) And a level comparator (9) for comparing the output signals of the first and second level synthesizing units (7, 8) with each other to enable automatic tuning.
KR1019910011216A 1991-07-02 1991-07-02 Radio system having auto turning function KR940003749B1 (en)

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KR940003749B1 true KR940003749B1 (en) 1994-04-28

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