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EP0651543A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Personal communicator having improved zoom and pan functions

Assignee: MediaTek Inc
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Filing: 1994-10-28
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Granted: —
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Expires: 2014-10-28
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Abstract

Abstract 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.

Inventors

  • 👤 David Joseph Allard
  • 👤 Francis James Canova, Jr.
  • 👤 Debra Ann Gawne Johnson
  • 👤 Charles Sterling Lanier
  • 👤 James Robert Lewis
  • 👤 Byron Kevin Tiller
  • 👤 William Villafana
  • 👤 Raymond Lee Yee

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 20:55
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/72; H04M1/724; H04M1/72469; G; G06; G06F; G06F15/00; G06F15/02; G06F15/0225; G06F3/00; G06F3/01; G06F3/048; G06F3/0481; G06F3/0484; G06F3/0485; G06T; G06T3/00; G06T3/40; H04M1/26; H04M1/27; H04M1/274; H04M1/2745; H04M1/27467; H04M1/27475; H04M1/72403; G06F2203/00; G06F2203/048; G06F2203/04806; H04M2250/00; H04M2250/56

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 134 words
A personal communicator (10) comprising: a casing (12) having a size adapted to be held in the hand of a user; a touch sensitive display (26, 28) mounted on said casing; first means for displaying a graphics image (143) on said display; second means for displaying a magnification frame (168) on said display in response to a user touching said display at a touch point (166) with a finger, said frame being located beneath said touch point and delineating a portion of said graphics image to be magnified; third means for moving said frame around said display in response to sliding said finger around said display and in contact therewith; and fourth means for magnifying said portion of said graphics image delineated by said frame, in response to disengaging said finger from said display.
Claim 2
Dependent Claim 59 words
A personal communicator (10) as claimed in claim 1 wherein said second means is selectively actuated, and said communicator further comprises selectively actuated fifth means for panning said graphics image (143) in response to said user touching said display with a finger at one point and sliding the finger to another point thereby indicating direction and extent of panning.
Claim 3
Dependent Claim 74 words
A personal communicator (10) as claimed in claim 2 wherein said fifth means comprises: seventh means for drawing a symbol (188) on said display indicating where the user initially touched said display and for continuously redrawing a second symbol (190) beneath the finger as the finger slides to other positions; and eighth means for redrawing said graphics image in a new position in response to a release of said display at said second symbol.
Claim 4
Dependent Claim 42 words
A personal communicator (10) as claimed in claim 1 wherein said frame (168) and said touch sensitive display (26, 28) have similar shapes, said frame having a size smaller than that of said touch sensitive display and providing a predetermined magnification ratio.
Claim 5
Dependent Claim 40 words
A personal communicator (10) as claimed in claim 1 wherein said frame (168) and said touch sensitive display (26, 28) have rectangular shapes, said frame being displayed on said display beneath the point on said overlay touched by the finger.

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