Method and relevant device for controlling audio data source of multimedia device

A technology for audio data and device control, applied to color TV parts, TV system parts, TVs, etc., can solve problems such as inability to switch signals and reduce the quality of TV audio playback

Inactive Publication Date: 2009-11-11
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] However, the known signal source switching method cannot switch according to the signal quality in time
If the signal quality decays rapidly within the time set by the timer, the digitally modulated signal source will produce a large number of popping sounds, thus reducing the audio playback quality of the TV

Method used

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  • Method and relevant device for controlling audio data source of multimedia device
  • Method and relevant device for controlling audio data source of multimedia device
  • Method and relevant device for controlling audio data source of multimedia device

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Embodiment Construction

[0022] The present invention proposes a method that can control the signal source according to the signal quality in real time. It is not limited to TV, and any multimedia device that can receive the digital modulation part of audio data can apply the present invention.

[0023] Please refer to figure 1 , figure 1 It is a schematic diagram of a process 10 of Embodiment 1 of the present invention. The process 10 is used in a multimedia device to control the audio data source of the multimedia device. The multimedia device is a signal receiving end, and the audio data it receives includes an analog modulation part and a digital modulation part. The content of the audio data in the analog modulation part and the audio data in the digital modulation part are the same, the only difference is that the signal transmitting end modulates the audio data in different modulation modes. For example, the multimedia device can be a TV. Process 10 includes the following steps:

[0024] S...

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Abstract

The invention relates to a method for controlling an audio data source of a multimedia device, which comprises the following steps: detecting error states in audio data generated by a digital modulation signal source of the multimedia device so as to generate a detection result; generating an initial counting value; generating a counting result according to the initial counting value and the detection result; processing the counting result according to a scope limitation so as to generate a limitation result; and generating a comparison result by comparing the limitation result with a critical value and further controlling the audio data source of the multimedia device.

Description

technical field [0001] The present invention relates to a method for a multimedia device to control the source of audio data and related devices, in particular to a method for switching audio data sources in real time according to the number of errors in the audio data and related devices. Background technique [0002] Television is a very important part of modern life. With the advancement of technology, the quality of audio and video playback on TVs has also been continuously improved. As far as audio signals are concerned, Television Broadcasting systems use different audio standards depending on the country and region, such as the European standard A2 (Two Carrier System, dual-carrier sound system) and NICAM (Near Instantaneous Companded Audio Multiplex, near real-time compression Audio-enhanced multi-channel broadcasting, referred to as Liyin broadcasting), American standard BTSC (BroadcastTelevision System Committee) or Japanese standard EIA-J, etc. The transmitting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/60
Inventor 周志升
Owner NOVATEK MICROELECTRONICS CORP
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