KR970007891B1 - Auto channel selection memory method using the automatic channel seletion memory device for a car-audio - Google Patents

Auto channel selection memory method using the automatic channel seletion memory device for a car-audio Download PDF

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Publication number
KR970007891B1
KR970007891B1 KR1019940037154A KR19940037154A KR970007891B1 KR 970007891 B1 KR970007891 B1 KR 970007891B1 KR 1019940037154 A KR1019940037154 A KR 1019940037154A KR 19940037154 A KR19940037154 A KR 19940037154A KR 970007891 B1 KR970007891 B1 KR 970007891B1
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South Korea
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reception sensitivity
checking
memory
auto
broadcasting
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KR1019940037154A
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Korean (ko)
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KR960027281A (en
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장해룡
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대우전자 주식회사
배순훈
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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18Automatic scanning over a band of frequencies
    • H03J7/183Automatic scanning over a band of frequencies combined with selection between different stations transmitting the same programm, e.g. by analysis of the received signal strength
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0058Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means
    • H03J1/0066Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means with means for analysing the received signal strength
    • H03J1/0075Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor provided with channel identification means with means for analysing the received signal strength where the receiving frequencies of the stations are stored in a permanent memory, e.g. ROM

Abstract

Automatic station selection method checks a receiving sensitivity of a current broadcasting when a regional auto-memory key signal is set. If the receiving sensitivity is not good, a predetermined signal sound not a radio broadcasting is generated. Then, a broadcasting frequency previously memorized at a current band is checked, a broadcasting frequency of a current region is searched and is automatically selected as a station. Accordingly, an optimum station selection status is always maintained without regard to a regional broadcasting frequency.

Description

카오디오용 자동 선국 메모리 장치를 이용한 자동선국방법Automatic Tuning Method Using Automatic Tuning Memory Device for Car Audio

제1도는 종래 방송주파수 선국방법을 설명하는 플로우차트.1 is a flowchart for explaining a conventional broadcasting frequency tuning method.

제2도는 본 고안의 방송주파수 자동선국방법을 설명하는 플로우차트.2 is a flowchart illustrating a broadcast frequency automatic tuning method of the present invention.

본 발명은 카오디오용 자동선국 메모리장치를 이용한 자동선국방법에 관한 것으로, 특히 현재 수신되는 방송주파수의 선국상태를 감지하고 그 감지상태에 따라 자동적으로 최적수신모드를 선택하도록 하므로써, 지역별 방송주파수에 관계없이 항상 최적의 선국상태를 유지할 수 있어 수신감도의 최적성을 증가시킬 수 있음은 물론 운전자가 별도의 선국동작을 수행하지 않아도 되므로 이에따라 사용의 편리성도 향상되도록 된 카오디오용 자동선국 메모리 장치를 이용한 자동선국 방법에 관한 것이다.The present invention relates to an automatic tuning method using an auto-tuning memory device for car audio, and in particular, by detecting a tuning state of a currently received broadcast frequency and automatically selecting an optimal reception mode according to the detection state. It is possible to maintain the optimum tuning state regardless of the increase in the reception sensitivity. Also, the driver does not need to perform the separate tuning operation. Therefore, the auto tuning memory device for car audio is improved. It relates to the automatic tuning method used.

종래의 카오디오의 선국방법을 제1도를 참고로 살펴보면, 먼저, 사용자가 방송주파수가 다른 타지역을 운행할 경우 카오디오로 선국된 방송을 청취하다가 현재 수신중이 방송신호의 수신감도가 떨어지게 되면 다른 메모리에 설정된 방송을 선택하여 청취하게 된다. 그런데, 이러한 방식에 의하여 여러번 다른 메모리에 설정된 방송을 청취하는 것이 어렵게 될 경우 이때, 지역이 다른 것임을 인식하여 재차 오토메리 기능을 조작하여 그 해당지역의 방송주파수를 메모리하게 된다.Referring to FIG. 1, a conventional method of tuning audio data is described. First, when a user travels to another region having a different broadcasting frequency, the reception sensitivity of a broadcast signal that is currently being received decreases. If a broadcast is set in another memory, the user can listen to it. However, when it is difficult to listen to broadcasts set in different memories several times by this method, it is recognized that the regions are different, and the operation of the auto-memory function is performed again to memorize the broadcasting frequencies of the corresponding regions.

그러나, 상기와 같은 종래 선국방법은 오토메모리에 기설정되어 있는 해당 방송주파수의 지역을 벗어났을 경우 수신감도가 떨어지게 되나 사용자는 이를 메모리 설정키이를 이용하여 여러번 선국동작을 수행한 후에 비로소 인식하게 되므로 이에따라 사용의 편리성이 상당히 저하되었음은 물론 운행중에 운전자가 운전을 하면서 재차 선국동작을 수행해야 하므로 운전자의 안전에도 상당한 위험이 초래되는 문제점이 있었다.However, in the conventional tuning method as described above, the reception sensitivity decreases when the station is out of the range of the broadcasting frequency preset in the auto memory, but the user does not recognize this after performing the tuning operation several times using the memory setting key. Accordingly, the ease of use is considerably deteriorated, and the driver has to perform the tuning operation again while driving while the driver is in danger of causing a considerable risk.

이에 본 고안은 상기와 같은 제반문제점을 해결하기 위해 발명된 것으로, 현재 수신되는 방송주파수의 선국상태를 감지하고 그 감지상태에 따라 자동적으로 최적수신모드를 선택하므로 하므로써, 지역별 방송주파수에 관계없이 항상 최적의 선국상태를 유지할 수 있어 수신감도의 최적성을 증가시킬 수 있음은 물론 운전자가 별도의 선국동작을 수행하지 않아도 되므로 이에따라 사용의 편리성도 향상되도록 된 카오디오 자동선국메모리장치를 이용한 자동 선국방법을 제공함에 그 목적이 있다.Therefore, the present invention was invented to solve the above problems, and by detecting the tuning state of the currently received broadcast frequency and automatically selecting the optimal reception mode according to the detection state, regardless of the broadcasting frequency by region Automatic tuning method using car audio automatic tuning memory device which can improve the convenience of use because the operator can maintain the optimal tuning state and increase the reception sensitivity as well as the driver does not need to perform separate tuning operation. The purpose is to provide.

상기와 같은 목적을 달성하기 위한 본 발명은 지역별 오토메모리 키이신호가 설정되었을 경우 현재 수신되고 있는 방송의 수신감도가 낮은지를 체킹하는 수신감도 체킹단계와, 상기 수신감도 체킹단계 후에 판단한 결과 그 체킹수신감도가 일정시간 지속적으로 좋지 않을 경우는 라디오 방송이 아닌 일정신호음을 출력하는 지속시간 판단단계와, 이 지속시간 판단단계 후에 현 밴드에서 기 메모리되어 있는 방송주파수를 체킹하는 밴드체킹단계와, 이 밴드체킹 단계후에 현지역의 방송주파수를 검색하여 자동적으로 선국메모리하는 자동선국메모리 단계로 이루어진 것을 특징으로 한다.In order to achieve the above object, the present invention provides a reception sensitivity checking step of checking whether a reception sensitivity of a broadcast currently being received is low when the region-specific auto memory key signal is set, and checking the reception result after the reception sensitivity checking step is performed. If the sensitivity is not consistently good for a certain period of time, a duration determination step of outputting a constant beep sound rather than a radio broadcast, a band checking step of checking a broadcast frequency memorized in the current band after this duration determination step, and this band After the checking step, it is characterized in that the automatic tuning memory step of retrieving and automatically tuned to the broadcasting frequency of the local station.

이하, 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 고안은 먼저, 제2도에 도시된 바와같이 지역별 오토메모리키이 신호가 설정되었는지를 판단하는 키이신호 판단단계(S1)와, 상기 키이신호 판단단계(S1) 중에 지역별 오토메모리키이 신호가 설정되었을 경우는 현재 수신되는 방송의 수신감도를 체킹하고 그 체킹될 수신감도가 기준치이하 즉, 현재 수신되는 방송의 수신감도가 낮은지를 체킹하는 수신감도 체킹단계(S2)와, 상기 수신감도체킹단계(S2)후에 그 수신감도가 일정시간 예컨대 3∼5분 정도 지속되는 지를 판단하고 판단한 결과 수신감도가 좋은 경우는 현재 수신되는 방송주파수를 계속 설정하고, 그러나 상기 판단결과 수신감도가 지속적으로 좋지 않을 경우는 라디오 방송신호가 아닌 테이프, CD 또는 부드러운 Beep음 등의 신호를 출력한 다음 다음 단계(S4)로 진행하는 지속시간 판단단계(S3)와, 상기 지속시간 판단단계(S3)후에 현 밴드에서 메모리되어 있는 방송주파수를 각각 수신하여 그 수신감도를 체킹하는 자동체킹단계(S4)와, 상기 자동체킹단계(S4)후에 그 수신감도를 체킹한 결과 수신감도가 낮은 방송국수가 일정국수 예컨대, 4개 이상이면 다음단계로 진행하여 오토메모리 기능을 실행하는 밴드체킹단계(S5), 및 이 밴드체킹단계(S5) 후에 현지역의 방송주파수를 검색하여 자동적으로 선국메모리하는 자동 선국 메모리단계(S6)로 이루어진다.According to the present invention, as shown in FIG. 2, a key signal determination step S1 for determining whether an auto memory key signal for each region is set and an auto memory key signal for each region are set during the key signal determination step S1. In the case of checking the reception sensitivity of the currently received broadcast and checking the reception sensitivity to be checked below the reference value, that is, the reception sensitivity checking step (S2) of checking whether the reception sensitivity of the currently received broadcast is low, and the reception sensitivity checking step (S2). After that, it is determined whether the reception sensitivity lasts for a predetermined time, for example, 3 to 5 minutes. If the reception sensitivity is good, the currently received broadcast frequency is continuously set. However, if the reception sensitivity is not consistently good, A duration determination step (S3) of outputting a signal such as a tape, CD, or soft beep sound, which is not a radio broadcast signal, and then proceeding to the next step (S4); After the duration determination step (S3), respectively receiving the broadcast frequency stored in the current band and checking the reception sensitivity of the check step (S4), and after the automatic checking step (S4) checks the reception sensitivity As a result, if the number of broadcasting stations with low reception sensitivity is four or more, for example, four or more stations, the process proceeds to the next step, in which the band checking step (S5) for executing the auto memory function is performed, and the broadcasting frequency of the local station is searched after the band checking step (S5). An automatic tuning memory step (S6) which automatically tunes into memory.

한편, 상기 단계(S5) 중에 판단한 결과 수신감도가 낮은 방송국수가 4개 이하이면 그중에서 수신감도가 가장 좋은 방송주파수를 선택하여 라디오모드로 복귀하게 된다(S30). 또한, 자동선국 메모리단계(S6)에 의해 자동선국 메모리가 끝나게 되면 그 선국된 방송중 하나를 임의로 선택한 후 다시 라디오 모드로 복귀하게 된다(S50).On the other hand, if it is determined in step S5 that the number of broadcast stations having a low reception sensitivity is 4 or less, a broadcast frequency having the best reception sensitivity is selected among them and the mobile station returns to the radio mode (S30). In addition, when the automatic tuning memory is terminated by the automatic tuning memory step S6, one of the tuned stations is arbitrarily selected, and the mobile station returns to the radio mode again (S50).

여기서, 상기 수신감도 측정은 시그널레벨 예컨대, IF IC의 출력으로 체킹하게 된다. 그리고 지역별 오토메모리키이를 설정하지 않는다면 통상의 수동동작으로 설정할 수 있게 된다.Here, the reception sensitivity measurement is checked at the signal level, for example, the output of the IF IC. If the local auto memory key is not set, normal manual operation is possible.

이상 설명에서와 같이 본 발명은 현재 수신되는 방송주파수의 선국상태를 감지하고 그 감지상태에 따라 자동적으로 최적수신모드를 선택하도록 하므로써, 지역별 방송주파수에 관계없이 항상 최적의 선국상태를 유지할 수 있어 수신감도의 최적성을 증가시킬 수 있음은 물론 운전자가 별도의 선국동작을 수행하지 않아도 되므로 이에따라 사용의 편리성도 향상되는 효과가 있다.As described above, the present invention detects a tuning state of a currently received broadcast frequency and automatically selects an optimal reception mode according to the detected state, so that the optimum tuning state can be maintained at all times regardless of the broadcasting frequency of each region. In addition to increasing the optimum sensitivity, there is no need for the driver to perform a separate tuning operation, thereby improving convenience of use.

Claims (1)

지역별 오토메모리 키이신호가 설정되었을 경우 현재 수신되고 있는 방송의 수신감도가 낮은지를 체킹하는 수신감도 체킹단계와, 상기 수신감도 체킹단계 후에 판단한 결과 그 체킹수신감도가 일정시간 지속적으로 좋지 않을 경우는 라디오 방송이 아닌 일정신호음을 출력하는 지속시간 판단단계와, 이 지속시간 판단단계 후에 현 밴드에서 기메모리되어 있는 방송주파수를 체킹하는 밴드체킹단계와, 이 밴드체킹단계 후에 현 지역의 방송주파수를 검색하여 자동적으로 선국메모리하는 자동선국 메모리 단계로 이루어진 것을 특징으로 하는 카오디오용 자동 선국 메모리 장치를 이용한 자동 선국방법.When the auto memory key signal for each region is set, a reception sensitivity checking step of checking whether the reception sensitivity of the currently received broadcast is low and after the reception sensitivity checking step are determined. A duration determination step of outputting a constant beep sound, not a broadcast; a band checking step of checking a broadcast frequency memorized in the current band after the duration determination step; and searching for a broadcasting frequency of the current region after the band checking step. An automatic tuning method using an automatic tuning memory device for car audio, characterized by comprising an automatic tuning memory step for automatically tuning memory.
KR1019940037154A 1994-12-27 1994-12-27 Auto channel selection memory method using the automatic channel seletion memory device for a car-audio KR970007891B1 (en)

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KR1019940037154A KR970007891B1 (en) 1994-12-27 1994-12-27 Auto channel selection memory method using the automatic channel seletion memory device for a car-audio

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KR970007891B1 true KR970007891B1 (en) 1997-05-17

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