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Method for preventing shock-wave noise during channel change

A popping sound and volume technology, which is applied in the field of TV control, can solve the problems of affecting the rest of the family and easily frightening users, and achieve the effect of preventing the popping sound when changing channels and eliminating the popping sound phenomenon

Inactive Publication Date: 2012-11-28
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the volume of the current set-top box programs is basically stored separately, when the user adjusts from a program that has reduced the volume to a program that has not had time to reduce the volume, there will be a sudden change in the volume, which is the so-called boom , when the popping phenomenon is obvious, it is easy to frighten the user and affect the rest of the family

Method used

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  • Method for preventing shock-wave noise during channel change

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Embodiment Construction

[0021] Such as figure 1 Shown the present invention prevents the method for changing channel popping sound, comprises:

[0022] a. When the TV is turned off, the set-top box saves the current original volume M of all channels to Flash;

[0023] b. After the set-top box is powered on, read the original volume M of the saved channel into the memory;

[0024] c. When the set-top box displays or switches channels, record the initial time offset value K from the start-up time of the set-top box when the set-top box displays or switches channels, and mute the current channel displayed or switched to;

[0025] d. Find the original volume M of the current channel in the Flash;

[0026] e. Unmute the current channel, set the volume to 0, increase the volume of the current channel every 100 milliseconds within the predetermined time range L of 2 to 5 seconds, and record the time from the current time to the start-up time of the set-top box Current time offset value T. The volume inc...

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Abstract

The invention relates to a method for preventing shock-wave noise during channel change. The method comprises the following steps of: a, saving the current original volume of all channels through a set top box; b, reading the original volume of the saved channels after the set top box is started; c, silencing the displayed or switched current channel when the set top box displays or switches the channels; d, finding the original volume of the current channel in the memory; e, relieving the silencing of the current channel, and setting the volume as 0, so that the volume of the current channel is increased at the set amplitude in the preset time range according to the set duration at intervals until the volume reaches the original volume value or an external instruction is input; and f, setting the current volume as the volume of the current channel after the set top box receives the input external instruction in the volume increasing time. According to the method, the shock-wave noise phenomenon can be completely eliminated when the set top box is started and the television channels are changed, so that a user can watch and switch the television channels in a comfortable environment, and the volume can be dynamically set by the user when the channels are displayed.

Description

technical field [0001] The invention relates to a control method of a television set, in particular to a method for preventing popping sound from channel changing. Background technique [0002] Currently, digital TV is developing rapidly, and digital TV users are growing explosively. There is an obvious problem in the process of using the set-top box by the user. The user watches TV during the day and adjusts the volume of the program to a very high level, and needs to turn down the volume of the TV when watching TV at night, and the volume of different TV channels sometimes varies greatly. Since the volume of the current set-top box programs is basically stored separately, when the user adjusts from a program that has reduced the volume to a program that has not had time to reduce the volume, there will be a sudden change in the volume, which is the so-called boom , when the popping phenomenon is obvious, it is easy to frighten the user and affect the rest of the family. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/60
Inventor 孙红兵杨巍龚文清冷连喜杨华琼
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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