Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. China Blue High-Definition (CBHD)is a high definition optical disc format announced in September 2007 by the Optical Memory National Engineering Research Center (OMNERC) of Tsinghua University in China.Originally called CH-DVD, CBHD is a joint venture between the DVD Forum and OMNERC. Development began in 2005, and an early prototype was demonstrated in 2007. In 2008 during the DVD Forum's 42nd Steering Committee Meeting the DVD Forum gave OMNERC the ability to edit HD DVD specifications.

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