CBT Digital Broadcasting Standards Flashcards
6 cards from real CBT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CBT Digital Broadcasting Standards flashcards as text
In digital video, what does 4:2:2 chroma subsampling mean?
Answer: Full luma, half horizontal chroma resolution, full vertical chroma
4:2:2 subsampling retains full horizontal and vertical luma resolution while halving horizontal chroma resolution, commonly used in professional broadcast.
What frame rate and scan format is designated as 1080i/59.94 in broadcast production?
Answer: 1080 lines, interlaced, 59.94 fields per second
1080i/59.94 means 1080 interlaced lines delivered at 59.94 fields per second (equivalent to 29.97 complete frames per second).
What is the purpose of a PSIP (Program and System Information Protocol) in ATSC broadcasting?
Answer: To provide channel guide, time, and virtual channel data to receivers
PSIP provides receivers with virtual channel numbers, program guide data, rating information, and timing synchronization for ATSC broadcasts.
Which color space standard is used for standard-definition digital television in the US?
Answer: BT.601
ITU-R BT.601 defines the color matrix, sampling rates, and color primaries for standard-definition digital television.
What is the primary advantage of HEVC (H.265) over AVC (H.264) for broadcast applications?
Answer: Approximately 50% better compression efficiency at equivalent quality
HEVC achieves approximately 50% better compression efficiency than AVC at the same perceptual quality level, enabling 4K at practical broadcast bitrates.
In MPEG transport streams, what is the PID used for?
Answer: Packet Identification — uniquely identifies each elementary stream within the multiplex
The PID (Packet Identifier) is a 13-bit value in MPEG-2 TS packet headers that uniquely identifies which elementary stream each 188-byte packet belongs to.