System and methods for spacing, storing and recognizing electronic representations of handwriting, printing and drawings

• US 6,651,221 B1
• Filed: 04/05/2000
• Issued: 11/18/2003
• Est. Priority Date: 05/20/1993
• Status: Expired due to Fees

• Current Assignee: Microsoft Corporation
• Original Assignee: Microsoft Corporation
• Inventors: Thompson, Michael P., Altman, Dan, Rouiller, Michael W., Kusmer, Steven R., Stikeleather, Gregory, Evans, Michele M.
• Primary Examiner(s): Feild, Joseph H.
• Application Number:
  US09/543,828
• Time in Patent Office: 1,322 Days
• Field of Search: 707/502, 707/526, 707/541, 345/769-770, 345/863, 345/173-180, 382/173, 382/176, 382/178-179, 382/199, 382/286, 715/502, 715/526, 715/541
• US Class Current: 715/203
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: G06F 40/166 Editing, e.g. inserting or deleting
• CPC Class Codes: G06V 30/10 Character recognition
• CPC Class Codes: G06V 30/262 using context analysis, e.g. lexical, syntactic or semantic context
• CPC Class Codes: G06V 30/40 Document-oriented image-based pattern recognition

Abstract

A system for spacing, storing and recognizing electronic representations of handwriting and printing comprises a central processing unit that couples with a display device, an input device, and a memory. The memory includes means for spacing ink stroke representations, means for recognizing outline elements, means for performing deferred recognition, means for highlighting drawing areas and means for storing and displaying ink stroke representations. These means operate together to provide a pen-based or graphics oriented computer system with improved performance and added functionality for manipulating the space between ink stroke representations. The preferred embodiment of the present invention comprises several novel methods that provide this functionality including: a method for managing space between ink stroke representations, a method for displaying drawing elements in a visually distinct manner, a method for recognizing bullets and dashes, a method for storing ink stroke representations, a method for displaying and printing ink stroke representations, and a method for performing deferred character or word recognition.

Claims

1. A method for highlighting a drawing area and drawing elements when displayed in a system having a display device, a drawing layer for processing drawing elements and a writing layer for processing writing elements, the method comprising the steps of:

receiving an input;

determining whether the input affects at least one drawing element in the drawing layer of the system having the display device, the drawing layer for processing drawing elements and the writing layer for processing writing elements;

if at least one drawing element is affected by the input, determining the vertical and horizontal extents of the at least one drawing element;

determining whether an option is selected, wherein the option determines whether to provide a visually distinct identifier to the user relating to whether the input relates to the drawing layer or to the writing layer; and

if the option is selected, displaying a visually distinct identifier about the vertical and horizontal extents of the at least one drawing element, wherein the visually distinct identifier provides a visual cue to the user, identifying the at least one drawing element as input relating to the drawing layer.

2. The method of claim 1, wherein the step of determining whether the input affects at least one drawing element tests whether at least one drawing element has been at least one of created, deleted and modified.

3. The method of claim 1, wherein the visually distinct identifier is a dashed border about the vertical and horizontal extents of the at least one drawing element.

4. The method of claim 1, wherein the visually distinct identifier includes a legend proximate the upper left corner of the identifier.

5. The method of claim 1, further comprising the steps of:

determining whether the vertical and horizontal extents of the affected at least one drawing element intersect with another drawing element; and

setting the vertical and horizontal extents to be the extents of the affected at least one drawing element and the other drawing element if the extents of the affected at least one drawing element intersect with the other drawing element.