A method for detecting changes in television signals

Abstract

The invention discloses a method for detecting a television signal change. The method specifically comprises the following steps: A. when a television signal state changes, sending, by a bottom layer,an event notification to an application layer; B. receiving, by the application layer, the event notification sent by the bottom layer, and reading event information; C. judging whether the current television signal state is a state having an image by reading the event information; if not, directly entering step D, or otherwise, entering step D after waiting for n seconds; D. calling an update UIfunction in a main thread, actively obtaining the current television signal state in the update UI function to obtain a current television signal state a fed back by the system; and E. judging whether the current television signal state a is consistent with a television display state, and if not, updating the current television signal state to the television signal state a, or otherwise, not updating the current television signal state. By adoption of the method for detecting television signal change provided by the invention, the current signal state can be correctly displayed, and UI misdirection, prompting flash and other problems caused by the monitoring are avoided.

Description

technical field [0001] The invention relates to the technical field of television, in particular to a method for detecting changes in television signals. Background technique [0002] The status of TV control information is rich and varied, including signal and no signal, encryption and decryption, age level lock and audio program, etc. When the following situations occur: after the user searches for channels, after switching channels or channels, plugging and unplugging signal cables, setting Age level, code stream playback to encryption period, detection of CI status, etc. When the TV system analyzes the TV input signal at this time, if the signal status changes are captured, the TV software needs to update the current signal status in time according to the change, and display it to the user correctly , and then the user can understand it well, and then make a response. [0003] For the above-mentioned signal state changes, the traditional TV software design corresponds t...

AI Technical Summary

Problems solved by technology

[0004] First, the TV will freeze. For example, there are too many applications opened on the TV, or all the programs are searched again after searching thousands of channels. If the performance of the TV chip is not enough, there may be memory competition or low-priority processes. It is processed with a lag, so in the case of a lag, when the UI is updated, the state obtained before is still recorded, and there will be a signal error problem;

[0005] Second, some signal changes have a process, such as a switcher or a channel. This process signal may have multiple intermediate states, and the state may have entered the next state when the UI prompt is updated, which makes the prompt insufficient. real time;

[0006] Third, there will be cases where the TV signal is unstable or the user frequently changes the signal. If the prompt is updated as soon as the signal change is detected, the screen will flicker, or the screen may be blocked by the prompt. Although it can be reasonably explained, But it is obviously unfriendly to users, without considering the handling of specific situations

[0007] Therefore, although the current general signal detection processing method can obtain signal changes and update UI prompts in time, it cannot guarantee the real-time effectiveness of the prompts, and unfriendly interactions cannot be avoided in certain situations. This method urgently needs to be optimized.

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