Due to the sluggish growth in the PC sector as well as diminishing room for growth in the ODD upgrade market, the worldwide ODD market also slacks off. While M&A activities within the industry abound, Japanese and Korean companies still hold an edge on such competitions. With the arrival of the high-definition era, blue-ray products have been continually introduced to the market. DVD recorders and the entire Blu-ray / HD DVD product lines all have been made available already.