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A set-top box and a method for detecting interference signals of the set-top box

A technology for interfering signals and set-top boxes, applied in the field of communication, can solve problems such as the inability to determine the interference source of digital TV signals and the inability to improve the quality of digital signals

Active Publication Date: 2017-09-29
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a set-top box and a method for detecting the interference signal of the set-top box, which is used to solve the problem in the prior art that the interference source of the digital TV signal cannot be determined, so that the quality of the digital signal cannot be improved by removing the interference source

Method used

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  • A set-top box and a method for detecting interference signals of the set-top box
  • A set-top box and a method for detecting interference signals of the set-top box
  • A set-top box and a method for detecting interference signals of the set-top box

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Embodiment 1

[0035] Embodiment 1 of the present invention provides a method for detecting an interference signal of a set-top box, figure 1 It is a schematic diagram of the connection relationship of some devices in the set-top box provided by Embodiment 1 of the present invention, figure 2 for application to figure 1 A set-top box interference signal detection method of the set-top box shown.

[0036] Such as figure 1 As shown, it includes: a coordinator (TUNER) chip 101, and a switch chip 102, wherein the first pin of the switch chip 102 is connected to the TUNER chip 101, and the second pin of the switch chip 102 is connected to an interface for receiving digital TV signals.

[0037] image 3It is a schematic diagram of the connection relationship of some devices in the set-top box in the prior art. In the prior art, the pins used for collecting radio frequency signals of the TUNER chip 101 of the set-top box can be directly connected with the interface for receiving digital televis...

Embodiment 2

[0048] apply to figure 1 For the set-top box shown, Embodiment 2 of the present invention provides a method for detecting an interference signal of a set-top box, such as Figure 4 As shown, it specifically includes the following steps:

[0049] S401. After the set-top box is powered on, control the switch chip 102 to block the TUNER chip 101 in the set-top box from receiving digital TV signals.

[0050] S402. Control the TUNER chip 101 to search for signals of frequency points within a preset range in the space.

[0051] Further, when the signal of a preset frequency point cannot be searched, it means that the signal of the preset frequency point is weak and will not cause interference to the digital TV signal, and the next preset frequency point can be searched.

[0052] S403. Compare the signal strength of the searched frequency point with a preset strength threshold.

[0053] S404. When the signal strength searched in S403 is not less than the preset strength threshold,...

Embodiment 3

[0063] In Embodiment 3 of the present invention, a method for detecting an interference signal of a set-top box is provided. In this embodiment, the preset frequency points are each frequency point from the start frequency point to the stop frequency point used for transmitting digital TV signals. And when there are few preset frequency points where the signal can be searched, the searched signal can be compared with the preset strength threshold in real time to determine whether the searched signal is an interference signal. Such as Figure 5 shown, including the following steps:

[0064] S501. After the set-top box is powered on, control the switch chip to block the TUNER chip in the set-top box from receiving digital TV signals.

[0065] Initialize the start frequency point used for transmitting digital TV signals as the current frequency point, and perform the following steps in a loop for each frequency point from the start frequency point to the stop frequency point to ...

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Abstract

The embodiment of the present invention provides a set-top box and a method for detecting interference signals of the set-top box. The set-top box includes a coordinator TUNER chip and a switch chip, wherein the first pin of the switch chip is connected to the TUNER chip, and the second pin of the switch chip is connected to the receiver The interface of the digital TV signal is connected, and the method applied to the set-top box includes: after the set-top box is powered on, the control switch chip blocks the reception of the digital TV signal by the TUNER chip; the signal of the frequency point within the preset range in the search space of the TUNER chip is controlled; According to the signal strength of the frequency points searched by the TUNER chip, determine whether there is an interference signal; after the TUNER chip searches all the frequency points within the preset range, the control switch chip turns on the TUNER chip to receive digital TV signals. The problem in the prior art that it is impossible to determine the interference source that causes the poor quality of the digital television signal is solved. The invention relates to the technical field of communication.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a set-top box and a method for detecting interference signals of the set-top box. Background technique [0002] Digital TV set-top box (STB, Set-Top Box) (hereinafter referred to as "set-top box") is a conversion device that converts digital TV signals into analog signals. It decodes and restores digitally compressed image and sound signals to generate analog signals. Video and sound signals provide viewers with high-quality TV programs through TVs and audio equipment. Current TVs only support analog signal input and display. With a set-top box, you can enjoy digital life with your analog TV at home. [0003] Usually, the digital TV signal is transmitted to the set-top box in a wired manner, that is, the set-top box receives the digital TV signal from the central office through a cable (cable) connected to itself. Moreover, the digital TV signal that the set-top box can re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/41H04N21/426H04N17/00H04N21/442H04N21/431
Inventor 付建强王璞
Owner HONOR DEVICE CO LTD