KR970000829B1 - Apparatus for discriminating magnitude of tv signal - Google Patents
Apparatus for discriminating magnitude of tv signal Download PDFInfo
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- KR970000829B1 KR970000829B1 KR1019930008864A KR930008864A KR970000829B1 KR 970000829 B1 KR970000829 B1 KR 970000829B1 KR 1019930008864 A KR1019930008864 A KR 1019930008864A KR 930008864 A KR930008864 A KR 930008864A KR 970000829 B1 KR970000829 B1 KR 970000829B1
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- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S362/00—Illumination
- Y10S362/80—Light emitting diode
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Theoretical Computer Science (AREA)
- Circuits Of Receivers In General (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Television Receiver Circuits (AREA)
Abstract
내용 없음.No content.
Description
본 발명은 텔레비젼의 신호세기 식별장치에 관한 것으로, 특히 안테나를 통해 수신되는 텔레비젼 신호의 세기를 식별하여 신호의 강·약을 표시하는데 적합한 TV의 신호세기 식별장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for identifying signal strength of televisions, and more particularly, to an apparatus for identifying signal strengths of televisions suitable for identifying the strength and weakness of television signals received through an antenna.
TV를 새로 구입했거나 또는 처음 이사하여 TV를 설치하고 사용하면 화면이 잘 나오는 것이 일반적이다. 그러나, 지역적인 차이 혹은 다른 요인들에 의해 화면이 잘 나오지 않는 경우도 간혹 있다. 이때, 사용자들은 TV 혹은 다른 전자기기들에 대한 기술을 잘 알지 못함으로 오진하여 무조건 서비스 센타 또는 인근 전파사에 수리를 요청하고 있다.When you buy a new TV, or move and install a TV for the first time, the screen is usually good. However, there are some cases where the screen does not come out well due to regional differences or other factors. At this time, users are misunderstood because they are not familiar with the technology of TVs or other electronic devices, so they unconditionally request a repair from a service center or a nearby radio company.
따라서, 이로 인해 불필요한 경제적 또는 시간적인 손실이 야기될 뿐만 아니라, TV 기기의 성능에 어떠한 이상이 없음에도 불구하고 TV 기기를 공급하는 공급자의 이미지가 손상되는 등의 문제점이 있다.Therefore, this not only causes unnecessary economic or time loss, but also causes problems such as damage to the image of the supplier supplying the TV device even though there is no abnormality in the performance of the TV device.
따라서, 본발명은 수신된 텔레비젼 신호의 세기를 나타내는 기설정된 신호 레벨을 근거로 하여 수신된 텔레비젼 신호의 세기가 기설정된 기준레벨 이하일 때 소리 및 표시수단을 이용하여 시청각적인 경보를 발생할 수 있는 TV의 신호세기 식별장치를 제공하는데 그 목적이 있다.Accordingly, the present invention is directed to a TV capable of generating an audiovisual alarm using sound and display means when the received television signal is below a predetermined reference level based on a predetermined signal level representing the received television signal. Its purpose is to provide a signal strength identification device.
상기의 목적을 달성하기 위하여 본 발명은, 송신단으로부터 제공되는 다수의 신호들을 수신하여 요구하는 채널을 선택하는 튜너와, 상기 튜너로부터 선국된 신호를 증폭하는 중간 주파 증폭기에 응답하여 TV의 신호세기를 식별하는 장치에 있어서, 상기 중간 주파 증폭기로부터 출력된 신호를 디지탈 신호로 변환하는 ADC; 상기 ADC로부터 출력되는 신호에 응답하여 기설정된 기준값 이상 또는 이하 여부에 따라 로직로우 또는 로직하이 신호를 발생하는 마이콤; 상기 마이콤으로부터 출력되는 로직하이 또는 로직로우 신호에 응답하여 턴 온 또는 턴 오프되는 구동수단; 상기 구동수단의 구동에 응답하여 시청각적인 경보를 발생하는 소리 및 표시수단으로 이루어진 TV의 신호세기 식별장치를 제공한다.In order to achieve the above object, the present invention provides a signal strength of a TV in response to a tuner for receiving a plurality of signals provided from a transmitter and selecting a desired channel, and an intermediate frequency amplifier for amplifying the tuned signal from the tuner. An apparatus for identifying, the apparatus comprising: an ADC for converting a signal output from the intermediate frequency amplifier into a digital signal; A microcomputer generating a logic low or logic high signal in response to a signal output from the ADC according to whether the reference value is greater than or equal to a predetermined reference value; Driving means turned on or off in response to a logic high or logic low signal output from the microcomputer; Provided is a signal strength identification apparatus for a TV comprising sound and display means for generating an audiovisual alarm in response to driving of the drive means.
제1도는 본 발명의 바람직한 실시예에 따른 텔레비젼의 신호세기 식별장치를 도시한 블럭도.1 is a block diagram showing an apparatus for identifying signal strength of a television according to a preferred embodiment of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 튜너 20 : 중간주파 증폭기10 tuner 20 medium frequency amplifier
30 : ADC 40 : 마이콤30: ADC 40: Micom
50 : 구동기 60 : 소리 및 표시회로50: driver 60: sound and display circuit
이하, 본 발명의 바람직한 실시예에 대하여 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도면은 본 발명에 따른 텔레비젼의 신호세기 식별장치를 도시한 개략적인 블럭도로서, 신호세기 식별장치(100)는 튜너(10), 중간 주파 증폭기(20), 아나로그/디지탈 변환기(ADC)(30), 마이콤(40), 구동기(50) 및 소리 및 표시회로(60)를 포함한다.Figure is a schematic block diagram showing a signal strength identification apparatus of a television according to the present invention, the signal strength identification apparatus 100 is a tuner 10, an intermediate frequency amplifier 20, an analog / digital converter (ADC) ( 30), the microcomputer 40, the driver 50, and the sound and display circuit 60.
도면에 있어서, 튜너(10)는 통상 두가지 동작 과정을 갖는데, 첫째는 안테나에 유기된 몇개의 고주파 신호 중에서 요구하는 채널의 고주파를 선택하며, 두번째는 선국된 신호의 주파수를 증폭하기 용이한 중간 주파수의 신호로 변환하는 주파수 변환과정이다. 선국은 일반적으로 로타리 채널 변환기 또는 택트(tact) 스위치를 이용해 행하는데, 이것에 의해 고주파 증폭의 동조회로와 국부 발진회로의 코일의 교환이 이루어져 요구하는 희망 채널이 선택되고, 이 선택된 채널의 신호는 다음 블럭(20)으로 전달된다.In the figure, the tuner 10 generally has two operation processes, firstly selecting a high frequency of a desired channel among several high frequency signals induced in an antenna, and secondly an intermediate frequency that is easy to amplify the frequency of the tuned signal. This is the frequency conversion process to convert the signal to. Tuning is generally performed using a rotary channel converter or a tact switch, whereby a desired channel desired is selected by exchanging a coil of a high frequency amplification tuning circuit and a local oscillating circuit, and the signal of the selected channel is selected. It is passed to the next block 20.
한편, 중간 주파 증폭기(20)는 상기한 튜너(10)에서 선택된 중간 주파 신호를 요구되는 레벨까지 증폭한다. 음극선관(CRT)(도시생략)을 이용한 화면의 성능은 이 블럭(20)에서 거의 결정되므로 선택도, 대역폭등의 주파수 특성이 좋고, 이득이 높으며, 안정된 증폭을 해야 할 필요가 있다. 또한, 이 블럭(20)에서 충실한 색재현을 위해 영상신호의 고역에 포함되어 있는 반송 색신호를 찌그러짐이 없이 증폭하며, 이 증폭된 신호는 영상신호 처리회로(도시생략) 및 ADC(30)로 전달된다.On the other hand, the intermediate frequency amplifier 20 amplifies the intermediate frequency signal selected by the tuner 10 to the required level. Since the performance of the screen using a cathode ray tube (CRT) (not shown) is almost determined in this block 20, it is necessary to have good frequency characteristics such as selectivity, bandwidth, high gain, and stable amplification. In addition, in this block 20, the carrier color signal included in the high range of the image signal is amplified without distortion for faithful color reproduction, and the amplified signal is transmitted to the image signal processing circuit (not shown) and the ADC 30. do.
다음에, ADC(30)는 상기한 중간 주파 증폭기(20)를 통해 증폭된 아나로그 신호를 마이콤(40)에서 인식할 수 있도록 디지탈 신호로 변환한다. 본 발명의 바람직한 실시예에서는 중간 주파 증폭기(20)에서 출력되는 아나로그 신호를 128등분의 디지탈 신호 레벨로 변환한다. 또한, 마이콤(40)은 상기한 ADC(30)로부터 출력되는 디지탈 신호를 입력하여 입력된 수신신호의 세기가 기설정된 기준레벨 이상 또는 이하인지의 여부에 따라 로직로우 또는 로직하이를 발생하여 다음 블럭(50)으로 인가한다.Next, the ADC 30 converts the analog signal amplified by the intermediate frequency amplifier 20 into a digital signal so that the microcomputer 40 can recognize it. In a preferred embodiment of the present invention, the analog signal output from the intermediate frequency amplifier 20 is converted into a digital signal level equal to 128. In addition, the microcomputer 40 inputs the digital signal output from the ADC 30 to generate a logic low or logic high depending on whether the intensity of the received signal is greater than or equal to a preset reference level and generates the next block. (50).
상술한 바와 같이, 마이콤(40)에는 상기한 ADC(30)를 통해 디지탈화한 값의 기준치가 사전에 설정되어 있으며, 일반적으로 TV로 수신되는 신호의 세기가 60dB 이상이면 정상적인 화면을 구현할 수 있으므로 수신되는 신호가 60dB 이상이면 마이콤(40)의 출력값은 로직로우를 발생하고, 60dB 이하이면 로직하이를 발생하도록 기준치를 설정할 수 있을 것이다.As described above, the reference value of the digitized value through the ADC 30 is set in advance in the microcomputer 40, and in general, when the intensity of the signal received by the TV is 60 dB or more, a normal screen may be received. If the signal is greater than 60dB, the output value of the microcomputer 40 generates a logic low, and if it is less than 60dB, the reference value may be set to generate a logic high.
다음에, 구동기(50)은 정류용 다이오드(D1), N형 트랜지스터(Q1) 및 저항(R1)을 포함하며, 상기한 마이콤(40)으로부터 로직하이 신호가 제공될 경우에 다이오드(D1)가 단락되고, 따라서, 트랜지스터(Q1)는 턴 온되며, 로직로우가 제공될 경우에 다이오드(D1)가 개방되어 트랜지스터(Q1)는 턴 오프되도록 동작한다.Next, the driver 50 includes a rectifying diode D1, an N-type transistor Q1, and a resistor R1. When the logic high signal is provided from the micom 40, the diode D1 is applied. Short-circuited, therefore, transistor Q1 is turned on and, when a logic low is provided, diode D1 is opened to operate so that transistor Q1 is turned off.
한편, 소리 및 표시회로(60)는 본 발명의 바람직한 실시예로서, 발광다이오드(LED)및 압전(piezoelectric) 소자 등을 이용하여 소리 및 디스플레이를 제공하도록 구현할 수 있다. 즉, 전술한 바와 같이 마이콤(40)에서는 수신된 신호의 세기가 기설정된 기준값, 즉 60dB 이하인 경우에는 로직하이를 출력하여 구동기(50)를 구동시키고, 소리 및 표시회로(60)를 동작시켜 소리 및 디스플레이(시청각적인 경보)를 제공하며, 반면에, 수신된 신호의 세기가 기설정된 기준값, 즉 60dB 이상인 경우에는 로직로우가 출력되어 구동기(50)가 구동되지 않으므로 소리 및 표시회로(60)는 어떠한 소리 및 표시도 제공되지 않는다.On the other hand, the sound and display circuit 60 is a preferred embodiment of the present invention, it can be implemented to provide a sound and a display using a light emitting diode (LED) and piezoelectric (piezoelectric) element. That is, as described above, when the received signal intensity is less than or equal to a predetermined reference value, that is, 60 dB or less, logic high is output to drive the driver 50, and the sound and the display circuit 60 are operated to generate sound. And a display (audio-visual alarm), on the other hand, when the intensity of the received signal is greater than or equal to a preset reference value, that is, 60 dB, the logic low is output so that the driver 50 is not driven so that the sound and display circuit 60 No sound or indication is provided.
이상 설명한 바와 같이, 본 발명에 따르면, 수신된 텔레비젼 신호의 세기 정도에 따라 소리발생 및 표시수단을 점등 또는 소등시킴으로써, 시청각적으로 신호 세기의 식별을 용이하게 할 수 있으므로, 화면상태의 불량으로 인한 텔레비젼의 시청 불능시에 사용자는 TV 기기의 자체 고장인지 혹은 신호 자체의 세기가 미약함에 기인하는 지의 여부를 명확하게 파악할 수 있다.As described above, according to the present invention, the sound generation and the display means are turned on or off according to the intensity of the received television signal, thereby making it possible to visually and visually identify the signal strength. When the television is incapable of viewing, the user can clearly grasp whether the TV device itself is broken or whether the signal itself is due to weak strength.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930008864A KR970000829B1 (en) | 1993-05-21 | 1993-05-21 | Apparatus for discriminating magnitude of tv signal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930008864A KR970000829B1 (en) | 1993-05-21 | 1993-05-21 | Apparatus for discriminating magnitude of tv signal |
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| Publication Number | Publication Date |
|---|---|
| KR940027515A KR940027515A (en) | 1994-12-10 |
| KR970000829B1 true KR970000829B1 (en) | 1997-01-20 |
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| KR1019930008864A Expired - Fee Related KR970000829B1 (en) | 1993-05-21 | 1993-05-21 | Apparatus for discriminating magnitude of tv signal |
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| KR100768818B1 (en) * | 2006-09-26 | 2007-10-19 | 주식회사 대우일렉트로닉스 | Receiving sensitivity notification device and method of television |
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