What's the difference between Internet TV and ordinary TV?

When it comes to the cost of TV, the first is the price of TV itself. At this point, ordinary TVs of the same size are cheaper than smart TVs. For example, there are some differences between smart TVs of the same size and brand and ordinary TVs. Different configurations have different prices, some are two or three hundred, and some are thousands or even more. Of course, there are some special cases. Non-smart TVs are more expensive than smart TVs, which is also the reason for different configurations.

Content cost variance:

Besides hardware charges, the biggest cost of TV is content. For smart TV and ordinary TV, the way to watch TV is different, so the cost is different.

Smart TV: on-demand: content service fee of the licensee; Smart TV comes with its own licensor, and there are many genuine video resources built in, but some videos can only be watched by members, and some are charged at a single point. No matter what kind of charging mode, it is a big expense for users, service life and failure rate.

Television is mainly composed of tuner, audio head, audio channel, common channel, synchronous scanning channel, color control display and power supply. The signal received from the antenna passes through the tuner, selects the high-frequency TV signal, amplifies it, and then sends the fixed intermediate-frequency TV signal.

The common channel consists of an IF amplifier, a video detector, a video amplifier and a picture tube. The IF amplifier amplifies the IF signal from the tuner to a sufficient amplitude, which is detected by the video detector, removes the IF carrier, recovers the image signal, and converts the second audio IF signal. After the video is amplified, the image signal is sent to the cathode emitting electrons in the picture tube to control the aggravation of the electron beam emitted by the picture tube, and the image can be displayed on the screen.

The second audio intermediate frequency signal enters the audio channel for amplification, and the audio synchronous scanning channel released by the speaker mainly produces field scanning and line scanning signals. The line scanning signal makes the magnetic field generated by the deflection coil sleeved on the picture tube control the electrons emitted by the cathode of the picture tube to scan the screen from the upper left corner to the upper right corner, scan the first line, and then scan the next line. The field scanning signal controls the deflection yoke, so the image has 25 fields per second.