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1. (WO2016050106) METHOD, DEVICE AND VIDEO CONFERENCE SYSTEM FOR DETECTING VIDEO SIGNALS IN SAME STANDARD

Pub. No.:    WO/2016/050106    International Application No.:    PCT/CN2015/082942
Publication Date: Fri Apr 08 01:59:59 CEST 2016 International Filing Date: Wed Jul 01 01:59:59 CEST 2015
IPC: H04N 7/15
Applicants: ZTE CORPORATION
中兴通讯股份有限公司
Inventors: HU, Zhongzhong
胡中中
SUN, Bo
孙博
Title: METHOD, DEVICE AND VIDEO CONFERENCE SYSTEM FOR DETECTING VIDEO SIGNALS IN SAME STANDARD
Abstract:
The present invention provides a method, device and video conference system for detecting video signals in the same standard. The method comprises: receiving video signal data output by any one of at least two signal sources in the same standard; recognizing a start position and an end position of valid data from the received video signal data; according to the recognized start position and end position of the valid data, counting the number of rows and columns of the received one complete frame data; if the number of rows and columns of the received one complete frame data in two adjacent counts is inconsistent, detecting that the received video signal data switches, and sending out the detection result. With the method for detecting video signals in the same standard in the present invention, it can be very easy to recognize whether the current data is one complete frame of valid image by means of counting and calculating blanking rows and valid rows within the data, and then a quick switch of video signals can be detected.