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Method for switching digital/analog signal reception and television for realizing the function

An analog signal and digital receiving technology, applied in the field of TV, can solve problems such as parts cannot be shared, multiple devices, occupation, etc., and achieve the effects of reducing costs, realizing interaction, and simplifying circuits

Active Publication Date: 2009-10-21
HAIER GRP CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in many parts not being able to share
For example, the above-mentioned digital signal processing circuit part is used to process digital TV signals, and the analog signal processing circuit part is used to process analog TV signals. Components, which increase the production cost of the TV

Method used

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  • Method for switching digital/analog signal reception and television for realizing the function
  • Method for switching digital/analog signal reception and television for realizing the function

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Embodiment Construction

[0035] figure 1 The schematic diagram of the circuit inside the TV of the present invention is shown. As shown in the figure, the TV of the present invention includes a display screen, a speaker, a TV tuner 110 , a switching unit 120 , a digital receiving part 140 and an analog receiving part 130 . in,

[0036] The TV tuner 110 is configured to receive and process digital TV signals and analog TV signals.

[0037] The switching unit 120 is used to control the processed analog signal output by the TV tuner 110, that is, the video and audio baseband signal, to the analog signal demodulation unit 131, or the processed digital signal, that is, the modulated multiplexed transport stream (TS) , to the digital signal demodulation unit 141.

[0038] Digital receiving section 140 includes:

[0039] A digital signal demodulation unit 141, configured to demultiplex the multiplexed TS stream signal output by the TV tuner 110, and output a TS stream (transport stream);

[0040] The dig...

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PUM

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Abstract

The present invention provides a television capable of realizing digital / analog signals receiving and switching, which comprises: a TV tuner for receiving and treating digital TV signals or analog TV signals; a switching unit for controlling the TV tuner to send the treated digital TV signals to a digital receiving part, or to send the treated analog TV signals to a analog receiving part; the digital receiving part for decoding signals from the TV tuner and sending the decoded video and audio to the analog receiving part to be treated; the analog receiving part for decoding signals from the TV tuner and treating the decoded video and audio and those from the digital receiving part for playing. The present invention also provides a switching method. With this invention, the compatibility between a digital system and an analog system is realized, thus the manufacturing cost of television is reduced.

Description

technical field [0001] The invention relates to the technical field of television, in particular to a method for receiving and switching digital / analog signals and a television for realizing the function. Background technique [0002] For a TV installed with a TV tuner (or tuner) with functions of receiving digital TV signals and analog TV signals, not only analog TV signals but also digital TV signals can be received. Correspondingly, this type of TV also uses two processing circuits inside, one is used to process analog TV signals for display on the display screen and audio playback by speakers; the other is used to process digital TV signals, which are processed by the display screen Display and play audio from speakers. [0003] The design of the two-way processing circuit is adopted because the analog TV signal processing part and the digital TV signal processing part respectively correspond to two sets of control systems. Although these two sets of control systems ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/44H04N5/50H04N21/41
Inventor 刘强胡希嘉赵玉林黄义正
Owner HAIER GRP CORP