What kinds of TV sets are there? What is the difference?

Television is divided into digital television and analog television. The differences between them are as follows:

First, the subject is different.

1. Digital TV: A TV system that digitally processes signals from program acquisition, program production to program transmission to the client.

2. Analog TV: Analog receiving and returning signals can be realized through the set-top box or cable modem, which changes the characteristic that NTSC, PAL and SECAM TV programs cannot be exchanged under the analog system.

Second, the characteristics are different.

1, digital TV: all links from studio to transmission, transmission and reception use digital signals, or spread through digital sequences consisting of 0, 1 digital strings.

2. Analog TV: adopt time axis sampling, vertically sample each frame, and transmit TV image signal by amplitude modulation.

Third, the advantages are different.

1. Digital TV: All signals in the system are transmitted through the digital stream composed of 0 and 1, and the transmission rate is 19.39Mb/s, which ensures the high definition of digital TV and overcomes the inherent shortcomings of analog TV.

2. Analog TV: Easy to implement encryption measures, namely encryption/decryption and encryption/interference, and convenient for professional applications (including military) and data broadcasting services.

Baidu Encyclopedia-Digital TV

Baidu Encyclopedia-Analog TV