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Method and device for multi-channel signal detection

A signal detection and channel technology, applied in the field of electronic information, can solve the problems of not being able to detect signals in real time, and achieve the effect of smooth video images

Inactive Publication Date: 2015-09-09
GUANGDONG VTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a method and device for multi-channel signal detection, which overcomes the problem of inability to detect signals in real time caused by frequent switching of video signals in the prior art

Method used

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  • Method and device for multi-channel signal detection
  • Method and device for multi-channel signal detection

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Experimental program
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Embodiment 1

[0028] An embodiment of the present invention provides a method for multi-channel signal detection, such as figure 2 As shown, the method includes:

[0029] Step 101: the detection module in the acquisition card detects the change of the video signal, and sends an interrupt request to the driver module in the acquisition card according to the detected change;

[0030] Wherein, the detection module in the acquisition card can specifically detect the change of the video signal through hardware. The change of the video signal mentioned here can specifically refer to: the presence or absence of the signal, or the difference in the resolution of the signal, or It may be other information that can represent the transformation of the video signal.

[0031] Step 102: The driver module triggers an event pre-created for the channel in the driver module according to the received interrupt request;

[0032] It should be understood that one or more than one event can be pre-created for ...

Embodiment 2

[0044] The embodiment of the present invention also provides a signal detection device, such as Figure 4 As shown, the device includes: a detection module 401, a drive module 402, and an application module 403, wherein the application module includes: an event waiting module 4031 and a message processing module 4031;

[0045] The detection module 401 is configured to detect a change in the video signal, and send an interrupt request to the drive module in the acquisition card according to the detected change;

[0046] The driving module 402 is configured to trigger an event pre-created for a channel in the driving module according to the interrupt request;

[0047] The event waiting module 4031 in the application module is configured to obtain the event, and send a notification message to the message processing module in the application module corresponding to the event waiting module;

[0048] The message processing module 4032 in the application module is configured to que...

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Abstract

The embodiment of the invention discloses a multi-channel signal detection method and device. The method comprises the following steps: using a detection module in an acquisition card to detect the changes in video signals and sending an interrupt request to a driving module in the acquisition card according to the detected changes; using the diving module to trigger an event which is pre-created for a channel in the driving module according to the interrupt request; using an event waiting module in an application module in the acquisition card to obtain the event, and sending a notification message to a message processing module in the application module, which corresponds to the event waiting module; and using the message processing module to inquire signal change information stored in the acquisition card through the driving module according to the notification message. According to the method disclosed by the invention, the signal changes in the different channels can be timely processed by the event waiting module and the message processing module, so that the video signals with frequent switching can be detected, and smooth video pictures can be provided for a user in a display interface.

Description

technical field [0001] The invention relates to the field of electronic information, in particular to a method and device for multi-channel signal detection. Background technique [0002] At present, the digital splicing wall system involves the collection and display of various video signals, such as red, green and blue (RGB, Red Green Blue) signals, video (VIDEO) signals, high-definition multimedia interface (HDMI, High Definition Multimedia Interface) signals wait. The wide application of video capture enables different kinds of video signals to be displayed centrally. However, when there are multi-channel video signals in the system, the switching of different video signal scores will cause the detection of video signals to be untimely. It may happen that when the device is processing the video signal detection operation in the first channel, the video signal in the second channel also changes and notifies the application module. In this case, the application module ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00H04N5/765
Inventor 鲁佳兵张伟德郑田丰
Owner GUANGDONG VTRON TECH CO LTD