Patent ID: 8665239

Claim:
A computer implemented method performed in a system including a processor coupled to digital data storage and a display having a touch-sensitive display surface, the method comprising the tasks of: in the digital data storage, storing a record defining a collection of multiple user gestures, each user gesture executable by touching the display, and further storing for each user gesture an assignment of one or more of multiple prescribed operations of modifying subject matter presented by the display; for each of one or more touches experienced by the display surface, the processor determining the magnitude of the touch upon the display surface; based on one or more prescribed properties of the one or more touches experienced by the display surface, the processor identifying from the collection of user gestures at least one user gesture executed by the one or more touches; the processor identifying the one or more prescribed operations assigned to the executed user gesture, and causing the display to modify the subject matter presented by the display according to the identified one or more operations; and where the tasks are further performed according to any or both of: (1) the identification of the executed user gesture is performed based on properties including the determined magnitude of the one or more touches; (2) as to the manner in which the subject matter presented by the display is modified according to the identified one or more operations, said manner is further responsive to the determined magnitude of the one or more touches.