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What is the bit rate for high-definition TV (HDTV)?(a) 1.4 Gbps(b) 2 Gbps(c) 1.5 Gbps(d) 1.8 GbpsThe question was posed to me in an international level competition.I'd like to ask this question from Layers in division Cryptography Overview, TCP/IP and Communication Networks of Cryptograph & Network Security

Answer»

Correct choice is (c) 1.5 Gbps

Explanation: The HDTV screen is normally a ratio of 16: 9 (in contrast to 4: 3 for regular TV)

There are 1920 by 1080 PIXELS PER screen, and

Screen is renewed 30 TIMES per second.

24-bits represent one color pixel.

Therefore Bit Rate = 1920 × 1080 × 30 × 24 = 1,492992,000 = 1.5 Gbps.



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