KR950002393A - TV noise canceller - Google Patents

TV noise canceller Download PDF

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Publication number
KR950002393A
KR950002393A KR1019930010118A KR930010118A KR950002393A KR 950002393 A KR950002393 A KR 950002393A KR 1019930010118 A KR1019930010118 A KR 1019930010118A KR 930010118 A KR930010118 A KR 930010118A KR 950002393 A KR950002393 A KR 950002393A
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KR
South Korea
Prior art keywords
noise
signal
multiplier
analog
field
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Application number
KR1019930010118A
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Korean (ko)
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KR970004196B1 (en
Inventor
길동선
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이헌조
주식회사 금성사
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Priority to KR1019930010118A priority Critical patent/KR970004196B1/en
Publication of KR950002393A publication Critical patent/KR950002393A/en
Application granted granted Critical
Publication of KR970004196B1 publication Critical patent/KR970004196B1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/64Circuits for processing colour signals

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)

Abstract

본 발명은 티브이의 노이즈 제거장치에 관한 것으로, 종래에는 노이즈 제거장치 전단에 생기는 노이즈나 색혼입에 대하여 축소내지는 제거할 수 있는 방법이 없어서 최종적으로 출력되는 신호에 노이즈나 색혼입이 그대로 존재하는 문제점이 있었다.The present invention relates to a noise reduction device of a TV, and conventionally, there is no method of reducing or eliminating noise or color mixing occurring in front of the noise removing device, so that noise or color mixing remains in the final output signal. There was this.

따라서 종래의 문제점을 해결하기 위하여 본 발명은 필드메모리를 추가하고, 노이즈제거기를 걸쳐 노이즈를 제거할 수 있도록 하므로써 최종적으로 출력되는 신호에 노이즈가 없고 색혼입이나 휘도혼입도 방지하도록 하였다.Accordingly, in order to solve the conventional problem, the present invention adds a field memory and removes noise through a noise remover, thereby preventing noise and color mixing or luminance mixing in the final output signal.

Description

티브이의 노이즈 제거장치TV noise canceller

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래 티브이의 노이즈 제거장치에 대한 회로 블럭도, 제2도는 본 발명 티브이의 노이즈 제거장치에 대한 회로블럭도, 제3도는 제2도에 있어서, 노이즈 제거부의 상세회로도, 제4도는 제3도에 있어서, 움직임검출부의 상세블럭도, 제5도는 본 발명에 있어서, 움직임과 노이즈를 구별하기 위한 K-곡선의 특성도.FIG. 1 is a circuit block diagram of a conventional TV noise canceller, FIG. 2 is a circuit block diagram of a TV noise canceller according to the present invention, FIG. 3 is a circuit schematic diagram of FIG. FIG. 3 is a detailed block diagram of the motion detection unit, and FIG. 5 is a characteristic diagram of a K-curve for distinguishing motion and noise in the present invention.

Claims (3)

입력되는 아날로그의 Y,U,V신호를 각각 8비트의 디지탈신호로 변환시키는 아날로그/디지탈변환부(11)와, 상기 아날로그/디지탈변환부(11)를 통해 출력되는 신호의 포맷을 바꾸어 출력하는 포맷터(12)와, 상기 포맷터(12)를 통해 출력되는 Y,U,V신호의 속도를 변화시켜 출력하는 제1필드메모리(13)와, 노이즈가 제거된 Y,U,V신호를 입력받아 상기 제1필드메모리(13)로 부터 출력되는 신호보다 1필드 지연시켜 출력하는 제2필드메모리(14)와, 상기 제1및 제 2필드메모리(13)(14)를 통해 출력되는 신호에 포함되어 있는 노이즈를 제거한 후에 출력하는 노이즈제거부(16)와, 상기 노이즈제거부(16)를 통해 출력되는 디지탈의 Y,U,V신호를 아날로그신호로 변환시켜 최종적으로 출력하는 디지탈/아날로그변화부(17)와, 시스템 전체의 동작을 제어함과 아울러 각 시스템에 필요한 클럭을 제공하는 메모리 제어부(15)로 구성된 티브이의 노이즈 제거장치.The analog / digital converter 11 converts the analog Y, U, and V signals into 8-bit digital signals, respectively, and changes the format of the signal output through the analog / digital converter 11. Receives a formatter 12, a first field memory 13 for varying the speed of the Y, U, V signal output through the formatter 12, and outputs a Y, U, V signal from which noise is removed. Included in the second field memory 14, which outputs one field delayed from the signal output from the first field memory 13, and the signals output through the first and second field memories 13,14. A noise canceller 16 for outputting the noise after removing the noise, and a digital / analog converter for converting digital Y, U, V signals output through the noise canceller 16 into an analog signal and finally outputting the analog signal. (17) and control the operation of the system as a whole Noise canceling device of the TV consisting of a memory controller 15 that provides the trucks. 제1항에 있어서, 포맷터(12)는 상기 아날로그/디지탈변환부(11)로 부터 출력되는 4:4:4 포맷의 Y,U,V신호를 4:1:1 포맷의 Y,U,V신호로 바꾸어 주는 것을 특징으로 하는 티브이의 노이즈 제거장치.2. The formatter 12 according to claim 1, wherein the formatter 12 outputs Y, U, V signals in 4: 4: 4 format from 4: 1: 1 format. TV noise reduction device, characterized in that to convert the signal. 제1항에 있어서, 노이즈제거부(16)는 1필드 지연된 아날로그신호에 -1을 곱한 후 출력하도록 하는 제1곱셈기(161)와, 상기 제1곱셈기(161)를 통해 1필드 지연된 출력신호 및 현재 필드신호를 더하여 그 차이값을 구하는 제1덧셈기(162)와, 상기 제1덧셈기(162)를 통해 얻어진 차이값에 따라 움직임양을 구하는 움직임검출부(163)와, 상기 움직임검출부(163)의 출력값에 따라 소정계수(K)값을 곱한 후 출력하는 제2곱셈기(164)와, 상기 제2곱셈기(164)를 통해 출력된 값에 1필드 지연된 값을 더하는 제2덧셈기(165)로 구성하여 된 것을 특징으로 하는 티브이의 노이즈 제거장치.The first multiplier 161 for multiplying a one field delayed analog signal by -1 and then outputting the first signal multiplier 161 outputs the first field delayed signal through the first multiplier 161. The first adder 162 calculates a difference value by adding a current field signal, the motion detector 163 calculates a motion amount according to the difference value obtained through the first adder 162, and the motion detector 163 And a second multiplier 164 for multiplying a predetermined coefficient K according to the output value and outputting the second multiplier 164, and a second adder 165 for adding one field delayed value to the value output through the second multiplier 164. TV noise reduction device characterized in that the. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930010118A 1993-06-04 1993-06-04 Noise deleting apparatus of tv KR970004196B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930010118A KR970004196B1 (en) 1993-06-04 1993-06-04 Noise deleting apparatus of tv

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930010118A KR970004196B1 (en) 1993-06-04 1993-06-04 Noise deleting apparatus of tv

Publications (2)

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KR950002393A true KR950002393A (en) 1995-01-04
KR970004196B1 KR970004196B1 (en) 1997-03-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100429811B1 (en) * 2002-03-29 2004-05-03 삼성전자주식회사 A apparatus for processing image

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100429811B1 (en) * 2002-03-29 2004-05-03 삼성전자주식회사 A apparatus for processing image

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KR970004196B1 (en) 1997-03-25

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