Are PC makers starting to give up on tablets? Manufacturers Asus and Acer are shifting focus to Intel-powered ultrabooks instead of tablets to improve gross margins, DigiTimes said on Tuesday. The site’s report suggests that the notebook market may soon begin to rebound after declining in 2011. Both firms are seemingly drawn to the wider margins achieved on sales of notebook computers, and are also gravitating away from developing low-cost netbooks. Asus and Acer aren’t alone; other reports have suggested that Dell and HP may also abandon the tablet market next year despite rumors both would launch Windows 8 tablets during the third quarter. In addition, Asus and Acer are eyeing opportunities in emerging markets such as China, Indonesia and India as opposed to the United States and Europe, where the firms typically spend the most effort trying to sell devices. Asus has previously denied reports that it might abandon Android tablets.