In digital television, what does a coding rate of 3/4 mean?
25% of the data sent is forward error correction data✓Правильный ответ
Data compression reduces data rate by 3/4
1/4 of the time interval is used as a guard interval
Three, four-bit words are used to transmit each pixel
Объяснение
A code rate of 3/4 means the encoder sends four bits for every three information bits, so one bit in four, or 25 percent of everything transmitted, is parity added for error correction. The figure describes channel coding overhead, not data compression, guard interval length, or how many bits carry a pixel.