KR960039958A - Aspect ratio automatic switching method and device - Google Patents

Aspect ratio automatic switching method and device Download PDF

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Publication number
KR960039958A
KR960039958A KR1019950010623A KR19950010623A KR960039958A KR 960039958 A KR960039958 A KR 960039958A KR 1019950010623 A KR1019950010623 A KR 1019950010623A KR 19950010623 A KR19950010623 A KR 19950010623A KR 960039958 A KR960039958 A KR 960039958A
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KR
South Korea
Prior art keywords
aspect ratio
signal
composite video
video signal
switching
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KR1019950010623A
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Korean (ko)
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KR100219129B1 (en
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이호성
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김광호
삼성전자 주식회사
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Priority to KR1019950010623A priority Critical patent/KR100219129B1/en
Publication of KR960039958A publication Critical patent/KR960039958A/en
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Publication of KR100219129B1 publication Critical patent/KR100219129B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
    • H04N7/0122—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal the input and the output signals having different aspect ratios
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Graphics (AREA)
  • Theoretical Computer Science (AREA)
  • Television Systems (AREA)

Abstract

본 발명은 복합영상신호의 화면비를 전환하는 방법 및 장치에 관한 것으로서, 입력되는 복합영상신호의 화면비를 자동으로 검출하고, 이를 이용하여 입력되는 복합영상신호의 화면비를 수상기둥 화상 현시수단의 종횡비와 일치하도록 전환하는 방법 및 장치에 관한 것이다. 본 발명의 화면비 자동전환방법 및 장치는 입력되는 복합영상신호의 화면비 및 신호대역의 틀어짐값을 검출하고, 이에 따른 화면비 전환을 위한 보정데이타를 화면비조정부로 전송하여 입력되는 복합영상신호의 화면비를 전환하도록 한다. 따라서, 본 발명은 입력되는 복합영상신호의 화면비에 관계없이 사용자가 수상기의 규격에 맞는 영상 프로그램을 시청할 수 있다. 또한 본 발명은 사용자의 조정이 없이 자동으로 화면비를 전환하므로 장치 조작상의 편리함을 제공하는 효과가 있다.The present invention relates to a method and apparatus for switching the aspect ratio of a composite video signal, and automatically detects the aspect ratio of the input composite video signal, and to determine the aspect ratio of the input composite video signal using the aspect ratio of the receiver image display means. A method and apparatus for switching to match. The aspect ratio automatic switching method and apparatus of the present invention detects the aspect ratio of the input composite video signal and the signal band skew value, and transmits correction data for the aspect ratio conversion to the aspect ratio adjusting unit so as to display the aspect ratio of the input composite video signal. Let's switch. Therefore, the present invention allows a user to watch a video program conforming to the standard of the receiver regardless of the aspect ratio of the input composite video signal. In addition, the present invention has the effect of providing convenience in operating the device because the aspect ratio is automatically switched without user adjustment.

Description

화면비 자동 전환방법 및 장치Aspect ratio automatic switching method and device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 화면비 자동 전환장치를 나타내는 블럭도, 제2도는 제1도의 장치에서 입력되는 영상신호의 화면비 조정상태를 나타내는 개념도, 제3도는 제1도 장치의 화면비검출부에서 샘플링(Sampling)에 의해 임의의 수평라인에 대한 신호의 유무를 판단하는 일 실시예를 나타내는 도면.FIG. 1 is a block diagram showing an aspect ratio automatic switching device according to the present invention, FIG. 2 is a conceptual diagram showing an aspect ratio adjustment state of an image signal input from the apparatus of FIG. 1, and FIG. Fig. 1 is a view showing an embodiment of determining the presence or absence of a signal with respect to an arbitrary horizontal line.

Claims (6)

일정한 화면비로 부호화 되어있는 복합영상신호를 복호화 하여 화면상에 디스플레이하는 장치에 있어서, 입력되는 복합영상신호의 휘도신호를 디지탈데이타로 변환하는 A/D 변환기; 입력되는 복합영상신호의 수평, 수직동기신호와 상기 디지탈데이타를 인가받아 복합영상신호의 화면비 및 신호대역의 틀어짐 값을 검출하고, 상기 검출결과에 근거하여 화면비 전환을 위한 보정데이타를 발생하는 화면비 검출부; 및 상기 보정데이타를 인가받아 영상신호의 화면비 및 신호대역의 위치를 조정하는 화면비조정부를 포함하는 화면비 자동 전환장치.An apparatus for decoding and displaying on a screen a composite video signal encoded at a constant aspect ratio, comprising: an A / D converter for converting a luminance signal of an input composite video signal into digital data; Aspect ratio detection unit for detecting the aspect ratio of the composite image signal and the distortion of the signal band by applying the horizontal and vertical synchronous signal and the digital data of the input composite image signal, and generating correction data for switching the aspect ratio based on the detection result ; And an aspect ratio adjusting unit configured to adjust the aspect ratio of the image signal and the position of the signal band by receiving the correction data. 제1항에 있어서, 상기 화면비조정부는 상기 화면비 전환을 위한 보정데이타를 인가받아 입력되는 복합영상신호의 신호대역을 이동, 압축 또는 확장시켜, 해당 현시수단에 적당한 규격의 화면비로 전환시키는 것을 특징으로 하는 화면비 자동 전환장치.2. The aspect ratio adjusting apparatus according to claim 1, wherein the aspect ratio adjusting unit shifts, compresses, or expands a signal band of an inputted composite video signal by applying correction data for switching the aspect ratio to convert the aspect ratio into an aspect ratio suitable for the display means. Aspect ratio automatic change over device. 입력되는 복합영상신호의 화면비를 전환하기 위한 방법에 있어서, 입력되는 복합영상신호로부터 휘도신호의 밝기레벨에 따른 디지탈데이타를 인가받는 단계; 상기 디지탈데이타를 인가받아 해당 프레임내의 모든 수평라인에 대하여 신호의 유무를 검사하는 제1판단단계; 상기 제1판단단계의 신호유무 판단에 근거하여 입력되는 복합영상신호의 화면비 및 신호대역의 틀어짐 값을 검출하는 제2판단단계; 상기 제2판단단계의 판단결과에 따라 화면비 전환을 위하 보정데이타를 발생하는 단계; 및 상기 보정데이타를 인가받아 영상신호의 화면비 및 신호대역의 위치를 조정하는 단계를 포함하는 영상신호의 화면비 자동 전환방법.A method for switching the aspect ratio of an input composite video signal, the method comprising: receiving digital data according to a brightness level of a luminance signal from an input composite video signal; A first determination step of receiving the digital data and checking the presence or absence of a signal with respect to all horizontal lines in the frame; A second judging step of detecting an aspect ratio of the composite video signal and a skew value of a signal band based on the signal presence determination of the first judging step; Generating correction data for switching the aspect ratio according to the determination result of the second determination step; And adjusting the aspect ratio of the image signal and the position of the signal band by receiving the correction data. 제3항에 있어서, 상기 제1판단단계는 프레임단위로 입력되는 신호의 수평동기신호를 인가받는 단계; 상기 인가받은 수평동기신호에 따른 수평라인상의 임의의 시점에서 휘도신호를 적절한 횟수로 샘플링하는 단계; 및 상기 샘플링의 결과에 근거하여 해당 수평라인의 신호유무를 판단하는 단계로 이루어진 것을 특징으로 하는 영상신호의 화면비 전환방법.The method of claim 3, wherein the first determination step comprises: receiving a horizontal synchronization signal of a signal input in units of frames; Sampling the luminance signal an appropriate number of times at any point on the horizontal line according to the applied horizontal synchronization signal; And determining the presence or absence of a signal of a corresponding horizontal line based on a result of the sampling. 제4항에 있어서, 상기 신호유무 판단은 상기 샘플링의 결과 하나 이상의 샘플링점에서 신호가 검출된 수평라인에 대하여는 신호가 있는 것으로 판단하고, 모든 샘플링점에 대하여 신호가 검출되지 않은 수평라인에 대하여는 신호가 없는 것으로 판단하는 것을 특징으로 하는 영상신호의 화면비 자동 전환방법.5. The method of claim 4, wherein the determination of the presence or absence of the signal determines that there is a signal for a horizontal line where a signal is detected at one or more sampling points as a result of the sampling, and for a horizontal line for which no signal is detected for all sampling points. The aspect ratio automatic switching method of the video signal characterized in that it is determined that there is no. 제3항에 있어서, 상기 제2판단단계는 프레임단위로 입력되는 신호의 수직동기신호를 인가받는 단계; 상기 수직동기신호가 인가되면 상기 제1판단단계의 신호유무 판단의 결과를 집계하는 단계; 상기 집계결과에 근거하여 현재 입력되는 복합영상신호의 화면비 및 신호대역의 틀어짐 값을 검출하는 단계; 및 상기 검출결과를 화면비조정부에서 요구하는 포맷의 보정데이타로 변환하는 단계를 포함하는 것을 특징으로 하는 영상신호의 화면비자동 전환방법.The method of claim 3, wherein the second judging step comprises: receiving a vertical synchronization signal of a signal input in units of frames; Counting a result of the signal presence determination of the first determination step when the vertical synchronization signal is applied; Detecting an aspect ratio of the currently input composite video signal and a shift value of the signal band based on the counting result; And converting the detection result into correction data of a format required by the aspect ratio adjusting unit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950010623A 1995-04-29 1995-04-29 Method and device for automatic conversion of aspect ratio KR100219129B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100628202B1 (en) * 2000-01-07 2006-09-27 엘지전자 주식회사 Apparatus For Autometic Sensing Resolution in Display and Method For The Same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100628202B1 (en) * 2000-01-07 2006-09-27 엘지전자 주식회사 Apparatus For Autometic Sensing Resolution in Display and Method For The Same

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