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Method for automatically detecting real-time signals or streams to realize full-automatic recording

A signal detection and automatic detection technology, applied in image communication, color TV components, TV system components, etc., can solve the problem of waste of disk resources, and achieve the effect of shortening the cycle, saving disk space, and saving manpower and material resources.

Active Publication Date: 2011-06-15
BEIJING DAYANG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, less than 1 / 10 may be effective materials, which is a serious waste of disk resources

Method used

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  • Method for automatically detecting real-time signals or streams to realize full-automatic recording
  • Method for automatically detecting real-time signals or streams to realize full-automatic recording
  • Method for automatically detecting real-time signals or streams to realize full-automatic recording

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Experimental program
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Embodiment 1

[0017] This embodiment is a method for realizing automatic recording of real-time signals or stream automatic detection, the hardware used in the method, such as figure 1 As shown, it includes: a collection dedicated line, an audio-visual I / O board connected to the signal acquisition line, and the audio-visual I / O board is plugged into the signal acquisition server.

[0018] Acquisition dedicated line: The "dedicated" of the acquisition dedicated line has two meanings: one is the technical level, the acquisition link is a coaxial cable, after the satellite receiver or other TV receiving equipment converts the received radio frequency signal into a digital signal , output to the acquisition board through the coaxial cable. One is the business level. Usually, the video image sources from major TV news organizations are specially set up, which are superior to other ordinary signals in terms of daily guarantee and importance of transmission.

[0019] Video and audio I / O board: Th...

Embodiment 2

[0082] This embodiment is an improvement of the first embodiment, and is a refinement of the signal detection method of the embodiment. The signal detection method described in this embodiment is a feature matching method, and the signal detection method uses a characteristic matcher arranged in the signal detection device, and the characteristic matcher stores a continuous frame change difference threshold, a color bar Feature matching sample, black field threshold, silence level threshold, silent frequency threshold, the signal detection method is as follows:

[0083] Detect image changes in consecutive frames: If the image difference between consecutive frames is greater than the continuous frame change difference threshold, it is determined that the image is active within the determined continuous frame time range. If the image between consecutive frames If the difference is smaller than the continuous frame change difference threshold, it is determined that the image is i...

Embodiment 3

[0117] This embodiment is an improvement of the second embodiment, and it is a change in the second embodiment about the length of the continuous frame. The length of the continuous frames described in this embodiment is 75 frames to 125 frames.

[0118] The time range of the continuous frame length of 75 frames to 125 frames is about 3 seconds to 5 seconds. If it is less than 75 frames, the time is short and it is easy to misjudgment. If it is longer than 125 seconds, the detection efficiency will be reduced.

[0119] Under normal circumstances, the range of 75 frames to 125 frames is selected, because in the PAL system, one frame represents 1 / 25 second, and the lack of content in one frame is not even noticed by human eyes. Moreover, the machine is also prone to false detection. In order to ensure that there is no false detection, the time switch is set to more than 3 seconds, but on the other hand, this time should not be too long. If it is too long, the effect of timely pr...

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Abstract

The invention relates to a method for automatically detecting real-time signals or streams to realize full-automatic recording. The hardware used in the method comprises an acquisition private line, a board card connected with a signal acquisition line and a signal detection acquisition equipment, wherein, the board card is connected with a signal acquisition server in an insertion manner; and the signal detection acquisition equipment is arranged on the signal acquisition server and comprises a signal detection device, a feedback device, a control device and an acquisition device. The methodcomprises the following steps: a signal receiving step, a caching step, a signal detection step, a feedback step, a control step and a signal acquisition step. In the invention, the signal detection device is adopted to judge which are the effective signals or streams, or ineffective signals or streams through the detection of the received signals or streams; the materials are selectively acquired, and a great quantity of manpower and material resources are saved, thus leading that the collecting and editing personnel are liberated from the annoying material selection work without any technical content, saving a large amount of disk space and shortening the programming period.

Description

technical field [0001] The invention relates to a method for automatic recording of real-time signals or streams, which is a method for computer video and audio digital processing, a method for signal collection and production of digital TV news, and a method for analyzing video and audio A method to determine whether a signal or stream is recorded or not, depending on whether it is useful or not. Background technique [0002] In order to meet the needs of TV programs, especially the production of news TV programs, TV stations exchange TV programs with other TV stations through dedicated lines. For this reason, the signal collection department of TV stations (generally called the collection department) needs to collect a large number of signals from other TV stations or news agencies every day. content. Traditionally, TV stations receive external signals and record them on tape for subsequent use. Now, due to technological progress, most of them use digital devices such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/262
Inventor 姚威邓伟骆健王宁蒋重涛邵一民张海云尚秀勇黄少明
Owner BEIJING DAYANG TECH DEV
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