Apparatus and method of formatting a list for display on a touchscreen

• US 6,157,379 A
• Filed: 05/21/1998
• Issued: 12/05/2000
• Est. Priority Date: 05/21/1998
• Status: Expired due to Term

• Current Assignee: Optis Cellular Technology LLC (Brevet Capital)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Singh, Mona
• Primary Examiner(s): dela Torre, Crescelle N.
• Application Number:
  US09/083,012
• Time in Patent Office: 929 Days
• Field of Search: 345/326, 345/333, 345/339, 345/340, 345/342, 345/350, 345/352, 345/353, 345/354, 345/146, 345/157, 345/169, 345/173
• US Class Current: 715/866
• CPC Class Codes: G06F 3/04886 by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus

Abstract

An apparatus and method of formatting for display within a designated list window of a touchscreen, the list including a plurality of list members with a touchable element and text associated therewith. The method includes the following steps: setting a minimum required distance between the touchable elements of adjacent list members; setting an area for each touchable element of the list members, wherein the area has a vertical component and a horizontal component; positioning a first list member within the list window; and, spacing each subsequent list member vertically and horizontally from an immediately preceding list member such that the minimum required distance between adjacent touchable elements is maintained. The vertical spacing between adjacent touchable elements may be set, with the horizontal spacing between touchable elements being determined from the minimum required distance between adjacent touchable elements, the interline spacing, and the vertical component of the touchable elements. Alternatively, the horizontal spacing between adjacent touchable elements can be set, with the vertical spacing between adjacent touchable elements being determined from the minimum required distance between adjacent touchable elements and the horizontal spacing. The touchable elements may be spaced in a repeating pattern, where the number of horizontal levels in the pattern can be selected by the user, determined as a function of the minimum required distance between adjacent touchable elements and the vertical spacing between adjacent touchable elements, or determined as a function of the physical size of the list window, the field width required for the associated text, and the indentation distance. The touchable element spacing within the list window is maximized by evaluating the number of lines of text to be displayed and the interline spacing, where adjacent touchable elements are offset horizontally when all list members cannot be displayed and spaced vertically by at least the minimum required distance between adjacent touchable elements.

Claims

1. A method of formatting a list for display within a designated list window of a touchscreen, said list including a plurality of list members with a touchable element and text associated therewith, said method comprising the following steps:

(a) setting a minimum required distance between touchable elements of adjacent list members;

(b) setting an area for each touchable element of said list members, wherein said area has a vertical component and a horizontal component;

(c) setting a required interline spacing between touchable elements of adjacent list members;

(d) calculating a line-space for each list member as a function of said vertical component of said touchable element area and said interline spacing;

(e) positioning a first list member at a designated line-space within said list window; and

(f) spacing each subsequent list member vertically and horizontally a specified amount from an immediately preceding list member in said list so that at least said minimum required distance between touchable elements is maintained.

2. The method of claim 1, wherein said designated line-space is located at an upper left corner of said list window.

3. The method of claim 1, wherein the vertical component of said touchable element area is a function of font size for the associated text of each list member.

4. The method of claim 1, wherein font size for the associated text of each list member is a function of the vertical component set for said touchable element area.

5. The method of claim 1, wherein horizontal spacing between the touchable elements of adjacent list members is determined as a function of said space for each said list member and said minimum required distance between the touchable elements for said adjacent list members.

6. The method of claim 5, wherein said horizontal spacing between the touchable elements of adjacent list members is equal to the square root of the difference between the square of said minimum required distance between the touchable elements for said adjacent list members and the square of said line-space for each said list member.

7. The method of claim 1, wherein the touchable element of each list member subsequent to said first list member is spaced horizontally either left or right of the touchable element for said immediately preceding list member.

8. The method of claim 1, wherein the touchable elements of said list members are horizontally spaced by an indentation level having a specified distance.

9. The method of claim 8, wherein a specified number of indentation levels for the touchable element of said list members is available.

10. The method of claim 9, wherein said specified number of indentation levels is user selectable.

11. The method of claim 9, wherein said specified number of indentation levels is determined as a function of said minimum required distance between the touchable elements of said adjacent list members and said line-space for each said list member.

12. The method of claim 9, wherein said specified number of indentation levels is determined as a function of a physical width for said list window on said touchscreen and a required field width for viewing the associated text of each said list member.

13. The method of claim 8, wherein the touchable elements of said list members are spaced in a repeating pattern.

14. The method of claim 13, wherein said repeating pattern involves alternating the touchable elements of said list members between a designated starting horizontal position within said list window and at least one indentation level.

15. The method of claim 1, wherein said spacing between adjacent touchable elements is a maximum of said calculated line-space, said minimum required distance, or a quotient of a physical height for said list window and a total number of list members.

16. The method of claim 15, wherein said horizontal spacing between the touchable element of each subsequent list member and the touchable element of said immediately preceding list member is equal to zero when said calculated line-space for each said list member is greater than said minimum required distance between touchable elements for adjacent list members.

17. The method of claim 15, wherein said horizontal spacing between the touchable element of each subsequent list member and the touchable element of said immediately preceding list member is equal to zero when said quotient of the physical height of said list window and said total number of list members is greater than said minimum required distance between touchable elements of adjacent list members.

18. The method of claim 1, wherein said minimum required distance between touchable elements of adjacent list members is in a range of 10-16 millimeters.

19. The method of claim 1, wherein said calculated line-space for each list member is in a range of 3.88-4.76 millimeters.

20. A method of formatting a list for display within a designated list window of a touchscreen, said list including a plurality of list members with a touchable element and text associated therewith, said method comprising the steps of:

(a) setting a minimum required distance between touchable elements of adjacent list members;

(b) setting an area for each touchable element of said list members, wherein said area has a vertical component and a horizontal component;

(c) setting an indentation distance between touchable elements of adjacent list members;

(d) positioning a first list member at a designated line space within said list window;

(e) horizontally spacing each subsequent list member from an immediately preceding list member in said list by at least said indentation distance; and

(f) vertically spacing each subsequent list member from an immediately preceding list member by an amount calculated as a function of said indentation distance and said minimum required distance between touchable elements of adjacent list members.

21. The method of claim 20, wherein said designated line-space is located at an upper left corner of said list window.

22. The method of claim 20, wherein the vertical component of said touchable element area is a function of font size for the associated text of each list member.

23. The method of claim 20, wherein font size for the associated text of each list member is a function of the vertical component set for said touchable element area.

24. The method of claim 20, wherein vertical spacing between the touchable elements of adjacent list members is determined as a function of said indentation distance and said minimum required distance between the touchable elements for said adjacent list members.

25. The method of claim 24, wherein said vertical spacing between the touchable element of each subsequent list member and the touchable element of an immediately preceding list member is equal to the square root of the difference between the square of said minimum required distance between touchable elements of adjacent list members and the square of said indentation distance.

26. The method of claim 20, wherein said vertical spacing between the touchable element of each subsequent list member and the touchable element of an immediately preceding list member is equivalent to a line-space for each list member and an interline spacing between list members.

27. The method of claim 20, wherein the touchable element of each list member subsequent to said first list member is spaced horizontally either left or right of the touchable element for said immediately preceding list member.

28. The method of claim 20, wherein the touchable element of said list members alternate horizontally between a left edge of said list window and said indentation distance.

29. The method of claim 20, wherein a specified number of indentation levels for the touchable element of said list members is provided.

30. The method of claim 29, wherein said specified number of indentation levels is user selectable.

31. The method of claim 29, wherein said specified number of indentation levels is determined as a function of said minimum required distance between touchable elements of adjacent list members and said vertical spacing between list members.

32. The method of claim 29, wherein said specified number of indentation levels is determined as a function of the difference between a physical width of said list window, a required field width for viewing the associated text of each said list member, and said indentation distance.

33. The method of claim 20, wherein the touchable elements of said list members are spaced in a repeating pattern.

34. The method of claim 33, wherein said repeating pattern involves alternating said touchable elements between a designated starting horizontal position within said list window and at least one indentation level.

35. The method of claim 20, wherein said spacing between adjacent touchable elements is a maximum of said minimum required distance between touchable elements of adjacent list members and a quotient of a physical height for said list window and a total number of list members.

36. The method of claim 35, wherein said horizontal spacing between the touchable element of each subsequent list member and the touchable element of said immediately preceding list member is equal to zero when said quotient of the physical height of said list window and said total number of list members is greater than said minimum required distance between touchable elements of adjacent list members.

37. The method of claim 20, wherein said minimum required distance between touchable elements of adjacent list members is in a range of 10-16 millimeters.

38. The method of claim 20, wherein said indentation distance is in a range of 8-16 millimeters.

39. In a computer system having a memory circuit, a processing circuit, and a touchscreen, a method of formatting a display list for finger-based selection comprising the step of displaying, under the control of said processing circuit, a plurality of touchable elements and associated text within a list window on said touchscreen, each of said touchable elements being spaced from immediately adjacent touchable elements a minimum specified distance to permit selection of any one of said touchable elements without any other of said immediately adjacent touchable elements being simultaneously selected, said minimum specified distance having a horizontal component and a vertical component in relation to said list window.

40. The method of claim 39, wherein each of said plurality of touchable elements is vertically spaced from said immediately adjacent touchable elements by an interline spacing.

41. The method of claim 40, wherein each of said plurality of touchable elements is horizontally spaced by an indentation level having a specified distance which is a function of said interline spacing and said minimum specified distance.

42. The method of claim 41, wherein a maximum number of indentation levels for the touchable elements of said list members is available.

43. The method of claim 42, wherein said maximum number of indentation levels is user selectable.

44. The method of claim 42, wherein said maximum number of indentation levels is a function of said minimum specified distance and said interline spacing.

45. The method of claim 42, wherein said maximum number of indentation levels is a function of said horizontal spacing between adjacent touchable elements, a physical width of said list window and a required field width for said text associated with said touchable element.

46. A portable intelligent communications device, comprising:

(a) circuitry for performing telephony operations;

(b) a memory circuit including at least one display list and at least one software application for accessing said list;

(c) a processing circuit associating a touchable element and related text with each list member in said display list; and

(d) a touchscreen coupled to said processing circuit for displaying lists from said memory circuit;

wherein the touchable elements and associated text of said list members are formatted within a list window on said touchscreen such that the touchable elements of immediately adjacent list members are a minimum specified distance apart to permit finger-based selection of one of said touchable elements without simultaneous selection of said immediately adjacent touchable elements, said minimum specified distance between immediately adjacent touchable elements having a vertical component and a horizontal component in relation to said list window.

47. The portable intelligent communications device of claim 46, wherein said processing circuit determines said horizontal component of said minimum specified distance as a function of a designated interline spacing between said list members and said minimum specified distance between the touchable elements of immediately adjacent list members.

48. The portable intelligent communications device of claim 46, wherein said processing circuit determines said vertical component of said minimum specified distance from said horizontal component and said minimum specified distance between the touchable elements of immediately adjacent list members.

49. The portable intelligent communications device of claim 46, wherein said processing circuit formats the touchable elements of said list members in a repeating pattern.

50. A method of formatting a list of touchable elements and associated text on a touchscreen of a portable intelligent communications device, wherein the number of touchable elements and associated text displayed within a list window on said touchscreen is maximized without creating selection ambiguity between adjacent touchable elements, said method comprising the following steps:

(a) setting a minimum required distance between adjacent touchable elements;

(b) setting an area for each of said touchable elements, wherein said area has a vertical component and a horizontal component in relation to said list window;

(c) setting a required interline spacing between adjacent touchable elements;

(d) calculating a line-space for each touchable element and its associated text as a function of said vertical component of said touchable element area and said interline spacing;

(e) determining a horizontal offset spacing between adjacent touchable elements;

(f) determining a maximum number of offset levels for a repeating pattern of said touchable elements;

(g) positioning a first touchable element and associated text within a first line-space on said list window;

(h) spacing each subsequent touchable element horizontally and vertically from an immediately preceding touchable element by said offset spacing in an offset pattern until said maximum offset level is reached; and

(i) repeating said offset pattern until all touchable elements and associated text in said list are displayed.