Aptina's EDoF patent application US20090297056 was published on Dec. 3, 2009:
Method and Apparatus for Extended Depth-of-Field Image Restoration
Lelescu, Dan (Morgan Hill, CA, US)
Mullis, Robert (Soquel, CA, US)
Rao, Pravin (San Jose, CA, US)
Venkataraman, Kartik (San Jose, CA, US)
Lu, Cheng (Santa Clara, CA, US)
Chen, Junqing (San Jose, CA, US)
Primarily algorithmic-based application talks about trade-offs between a quality of focusing and a depth of focus.
Aptina's EDoF approach is also presented in SPIE conference paper.
As a side note, two of the inventors - Kartik Venkataraman and Robert Mullis left Micron in March 2008 to found Pelican Imaging together with Aman Jabbi, a former Head of video technologies at Micron. They were able to raise $7M in round A financing in August 2009 - quite an achievement these days.
The new company is developing "computational cameras that can manipulate static, 2D images through three dimensions". The company site says: "At Pelican Imaging, we introduce a fundamental shift towards "software cameras" and address the challenges posed by conventional camera design, small pixels and the megapixel race. Pelican's technology will result in superior photographs & video, with new and exciting features and applications."