0651543-A2 is referenced by 146 patents and cites 5 patents.

A mobile, hand-held personal communicator 10 includes a casing 12 for housing a cellular phone, modem, and data processing system. Graphics image files 142 are stored and can be selectively displayed on a touchscreen display 26, 28. A zoom function magnifies areas of a graphics image 142, such as a fax image, that has been received and stored in the personal communicator. When the zoom function is selected, the user touches the screen, and a magnification frame 168 or window appears. When the user removes his/her finger, the area within the frame is magnified. The user can also drag the frame 168 around the screen, while still touching the screen, to select a specific area to be magnified when the user releases the screen. A pan function allows the user to shift the image 170 within a viewing area 142.; The user can pan the image 170 by touching the display at an initial touch point 188, and moving his/her finger keeping it in contact with the screen, to shift the touch point to a new touch point 190. Upon releasing the new touch point, the image is redrawn in a new position corresponding to the change in position between the initial 188 and new 190 touch points.

Title
Personal communicator having improved zoom and pan functions.
Application Number
EP19940307981 19941028
Publication Number
0651543 (A2)
Application Date
October 28, 1994
Publication Date
May 3, 1995
Inventor
Yee Raymond Lee
US
Villafana William
US
Tiller Byron Kevin
US
Lewis James Robert
US
Lanier Charles Sterling
US
Johnson Debra Ann Gawne
US
Canova Francis James Jr
US
Allard David Joseph
US
Assignee
Ibm
US
IPC
H04M 01/274
H04M 01/00
H04Q 07/38
H04M 01/72
H04M 01/274
H04M 01/247
H04B 01/40
G06T 11/80
G06T 03/40
G06F 15/02
G06F 03/048
G06F 03/033
G09G 03/36
H04Q 07/38
H04M 01/725
H04M 01/2745
H04M 01/247
H04B 01/40
G06T 11/80
G06T 03/40
G06F 15/02
G06F 03/048
G06F 03/033
G09G 03/36
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