Assignee
ZHAO YONGHUI
US·4 granted patents·41 citations·filing 2009–2011
Top patents by PatentIndex Score
4 records- 0194US8064102B1Embedding frequency modulation infrared watermark in digital documentZHAO YONGHUI·Filed 2010·Granted Nov 22, 2011·29 cites·12 claims
- 0279US8179570B2Generating image embedded with UV fluorescent watermark by combining binary images generated using different halftone strategiesZHAO YONGHUI·Filed 2009·Granted May 15, 2012·6 cites·20 claims
- 0371US8922673B2Color correction of digital color imageZHAO YONGHUI·Filed 2011·Granted Dec 30, 2014·2 cites·21 claims
- 0470US8261988B2Phase locked IR encoding for peened 2D barcodesZHAO YONGHUI·Filed 2009·Granted Sep 11, 2012·4 cites·20 claims
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