US 7,493,572 B2
Navigation methods, systems, and computer program products for virtual three-dimensional books
Stuart Kent Card, Los Altos Hill, Calif. (US); Richard Carl Gossweiler, III, Sunnyvale, Calif. (US); Allison Gyle Woodruff, Foster City, Calif. (US); and Jock Douglas Mackinlay, Palo Alto, Calif. (US)
Assigned to Xerox Corporation, Norwalk, Conn. (US)
Filed on Jul. 22, 2004, as Appl. No. 10/896,056.
Application 10/896056 is a division of application No. 09/741034, filed on Dec. 21, 2000, granted, now 7,139,982.
Prior Publication US 2005/0005246 A1, Jan. 06, 2005
Int. Cl. G06F 3/048 (2006.01)
U.S. Cl. 715—850  [715/776; 715/852] 2 Claims
OG exemplary drawing
 
1. A system for displaying images of a virtual three-dimensional book having one or more virtual pages, the system comprising:
a display system capable of executing a display program,
wherein images of the virtual three-dimensional book are produced on the display system,
a page selection function is provided, the page selection function comprising a user-selectable scale along an axis of the virtual three-dimensional book for selecting virtual pages, the user selectable scale being non-linear and a function of a degree of interest value, and
the degree of interest (DOI) value comprises a page distance from a currently displayed page, falls off exponentially from the currently displayed page, and is determined for each page number p using the function

OG Complex Work Unit Drawing
wherein A and k are constants, e is the base of natural logarithms, and |c-p| is the absolute value of the difference between a current page number c and each page number p.