ETSI 749 and DVBMS Standards for Digital Video Features
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Questions and Answers

What is the main reason behind the name 'Phase Alternating Line' for chroma signals?

  • To simplify receiver technology
  • To improve picture quality (correct)
  • To reduce signal bandwidth
  • To confuse the viewers

    • Why is SECAM known as 'Sequential Color with Memory'?

  • Due to its high data storage capacity
  • Due to its sequential frame rendering
  • Due to its sequential sound transmission
  • Due to its sequential color transmission (correct)

    • What is the aspect ratio of the SECAM analog video broadcast standard?

  • 3:2
  • 1:1
  • 4:3 (correct)
  • 16:9

    • What is the resolution of SECAM in terms of lines per frame?

    <p>625</p> Signup and view all the answers

    What is the function of the chrominance signal in color television?

    <p>Carries the color information</p> Signup and view all the answers

    Why are color standards like SECAM designed to be compatible with monochrome television receivers?

    <p>To ensure seamless transition for viewers</p> Signup and view all the answers

    What is the function of codecs in multimedia applications?

    <p>Convert audio and video data into smaller packages</p> Signup and view all the answers

    What is the purpose of key frames in video compression?

    <p>Serve as baseline frames for quality comparison</p> Signup and view all the answers

    Which component affects the playback system's maximum rate?

    <p>CPU, hard drive, and display card speed</p> Signup and view all the answers

    What does higher fps rate than the maximum system rate result in?

    <p>Jerky motion due to frame dropping</p> Signup and view all the answers

    Which video compressor is best for converting analog video into digital format?

    <p>Microsoft Video 1 codec</p> Signup and view all the answers

    What type of images is Microsoft RLE codec commonly used for compressing?

    <p>Animation and computer generated images</p> Signup and view all the answers

    What is the main difference between old TV receivers and color receivers?

    <p>Old TV receivers only display the luminance, while color receivers process both luminance and color signals.</p> Signup and view all the answers

    Which organization is responsible for maintaining the DVB standards for digital television?

    <p>Digital Video Broadcasting Project (DVB)</p> Signup and view all the answers

    What is a key advantage of Digital Video Broadcasting (DVB) in terms of copying?

    <p>Every copy made with DVB is identical to the original.</p> Signup and view all the answers

    What resolution is classified as 'High definition' in Digital Television (DTV)?

    <p>1920 × 1080, 16:9, progressive and interlaced</p> Signup and view all the answers

    Which coding standard was selected for audio and video data in Digital Video Broadcast?

    <p>MPEG-2</p> Signup and view all the answers

    What is the main feature of Multichannel Microwave Distribution Systems (MMDS) in data distribution?

    <p>Suitability for distributing data to households</p> Signup and view all the answers

    What is the frame aspect ratio for high definition specifications?

    <p>16:9</p> Signup and view all the answers

    Which pixel dimension is associated with the HDV format?

    <p>1280 x 720</p> Signup and view all the answers

    What is the color sampling method used in high definition HDV format?

    <p>4:2:0</p> Signup and view all the answers

    What does 'i' stand for in 1080 / 60 i?

    <p>Interlaced</p> Signup and view all the answers

    What is the frame height of a standard definition DV wide-screen (16:9) frame?

    <p>720 pixels</p> Signup and view all the answers

    Which factor determines the data rate for video data only in high definition?

    <p>Resolution</p> Signup and view all the answers

    What is the minimum frame rate needed to achieve the illusion of a moving image?

    <p>15 frames per second</p> Signup and view all the answers

    Which standard is applicable to frequencies below 10 GHz?

    <p>ETSI 749</p> Signup and view all the answers

    What is the measure of the rate of information content in a video stream?

    <p>Bit rate</p> Signup and view all the answers

    Which type of compression has quality issues associated with it?

    <p>Lossy compression</p> Signup and view all the answers

    Which type of video has a higher quality bit rate compared to VideoCD?

    <p>HDV</p> Signup and view all the answers

    Which technology is the specification based on for frequencies below 10 GHz?

    <p>DVB-C technology</p> Signup and view all the answers

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