Digital analog integrated color television receiving system

Abstract

The invention discloses a digital-analog integrated color television receiver system, including a tuner, a main controller, an audio processor and a video processor, wherein, the tuner inputs radiofrequency signals for watching the programs and outputs IF intermediate frequency signal of programs required to watch; the main controller performs magnification and chrominance encoding to the IF signal of the watching program, outputs the audio signal onto the audio processor and outputs the video signal onto the video processor, the main controller is connected to a digital signal processor, which performs demodulation and decoding process to the IF signal of the watching program output by the tuner and outputs audio signals to the audio processor. Compared with the existing technology, the invention can not only receive digital TV signals but also can receive analog TV signals, digital TV can not be resolved to receive analog signals, analog television to receive digital signals can not be the problem, realizes the transition from analog TV to digital TV, and the invention can complete the entire operation only by a remote controller, for simplifying the users' operations.

Description

Technical field: [0001] The invention relates to a TV set, in particular to a digital-analog integrated color TV receiving system capable of receiving digital TV signals and analog TV signals. Background technique: [0002] With the development of digital TV technology, digital TV services have been opened in many cities now, but the TV signals sent by some TV stations are analog signals, while other TV stations send digital signals. Most users are still using analog TV sets now, because analog TV sets cannot receive digital TV signals, so for digital TV users, they also need to re-purchase digital TV sets that can receive digital signals, which will cause unnecessary Waste, but also will increase the user's use cost. [0003] In order to avoid unnecessary waste, a digital TV set-top box that can convert digital signals into analog signals has appeared on the market. The analog TV can receive digital TV signals through the digital TV set-top box. However, since the digital ...

AI Technical Summary

Problems solved by technology

Most users are still using analog TV sets now, because analog TV sets cannot receive digital TV signals, so for digital TV users, they also need to re-purchase digital TV sets that can receive digital signals, which will cause unnecessary Waste, but also increase the user's cost of use

[0003] In order to avoid unnecessary waste, a digital TV set-top box that can convert digital signals into analog signals has appeared on the market. The analog TV can receive digital TV signals through the digital TV set-top box. However, since the digital set-top box is placed outside the TV, it needs to pass The cable is connected to the TV. When watching digital TV, two remote controllers are required to control the TV and the digital TV set-top box respectively. The operation is very troublesome.

Moreover, digital TV set-top boxes can only receive digital signals, not analog signals, so they cannot watch analog TV.

Images