Schonfeld, Erick (March 6, 2007). "Jeff Hawkins and the Brain". Business 2.0. CNN. Archived from the original on June 25, 2007. Retrieved February 16, 2017.
US patent 4622545A, William D. Atkinson, "Method and apparatus for image compression and manipulation", issued November 11, 1986, assigned to Apple Computer, Inc.
Schonfeld, Erick (March 6, 2007). "Jeff Hawkins and the Brain". Business 2.0. CNN. Archived from the original on June 25, 2007. Retrieved February 16, 2017.