Handwriting input display apparatus having improved speed in changing display of entered handwriting

• US 6,240,207 B1
• Filed: 08/11/1994
• Issued: 05/29/2001
• Est. Priority Date: 08/11/1993
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Shinozuka, Hideaki, Chatani, Masayuki
• Primary Examiner(s): PATEL, JAYANTI K
• Application Number:
  US08/289,134
• Time in Patent Office: 2,483 Days
• Field of Search: 382/179, 382/209, 382/293, 382/185-190, 382/202, 345/156-158, 345/173, 345/358, 178/18.03, 707/541
• US Class Current: 382/187
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: G06V 30/347 Sampling; Contour coding; Stroke extraction
• CPC Class Codes: G06V 30/373 using a special pattern or subpattern alphabet

Abstract

A predetermined relationship is established with respect to an arbitrary shape of a pattern, or a character, which is inputted by employing a pen on an input table, and displayed on a display unit in a handwriting input display apparatus. Further, a gesture is handwritten on the input tablet with the pen, so that a preselected process operation is carried out for the shape previously represented on the display unit, and therefore the display condition thereof may be changed. The line segment under representation is quickly and readily changed into an arbitrary condition. When a gesture is entered with respect to a plurality of line segments, these line segments are rearranged in response to a command corresponding to this gesture.

Claims

1. A handwriting input display apparatus comprising:

display means for displaying either a line segment of a character, corresponding to a calculation result of a computer;

tablet means, at least a portion of which is transparent, and formed on said display means, for providing coordinate data in response to an operation;

at least one input handwriting storing means for storing input handwriting corresponding to said coordinate data provided from said tablet means in response to said operation;

means for detecting a feature portion of said coordinate data which corresponds to a set of one or more characteristics of said input handwriting stored in said input handwriting storing means;

means for comparing said feature portion of said coordinate data handwriting with a feature portion of a gesture stored in a previously employed gesture data base; and

means for determining that said operation is a gesture when said feature portion is said coordinate data is similar to the feature portion of said gesture based on a comparison with a predetermined level of similarity and executing the corresponding gesture;

wherein;

when either the line segment or the character is being displayed on said display, said feature portion of said coordinate data is provided by said tablet means and in response to said feature portion of said coordinate data, a preselected command is performed to chance a display condition of said line segment or said character,

wherein a plurality of line segments are displayed on said display, and said operation serves to bridge for bridging at least three line segments, said command rearranges at least said three line segments at an equidistant to be displayed.

2. A handwriting input display apparatus comprising:

display means for displaying either a line segment of a character, corresponding to a calculation result of a computer;

tablet means, at least a portion of which is transparent, and formed on said display means, for providing coordinate data in response to an operation;

at least one input handwriting storing means for storing input handwriting corresponding to said coordinate data provided from said tablet means in response to said operation;

means for detecting a feature portion of said coordinate data which corresponds to a set of one or more characteristics of said input handwriting stored in said input handwriting storing means;

means for comparing said feature portion of said coordinate data handwriting with a feature portion of a gesture stored in a previously employed gesture data base; and

means for determining that said operation is a gesture when said feature portion is said coordinate data is similar to the feature portion of said gesture based on a comparison with a predetermined level of similarity and executing the corresponding gesture;

wherein;

when either the line segment or the character is being displayed on said display, said feature portion of said coordinate data is provided by said tablet means and in response to said feature portion of said coordinate data, a preselected command is performed to chance a display condition of said line segment or said character,

wherein a plurality of line segments are displayed, and said operation serves to designate an intersecting angle between at least two line segments, said command rearranging at least said two line segments at a predetermined angle for representation.

3. A handwriting input display apparatus as claimed in claim 2 wherein said operation designate an intersection on a preselected point on each of said at least two line segments, said command rearranging said at least two line segments at a predetermined point on each of said line segments at a preselected angle for representation.

4. A handwriting input display apparatus as claimed in claim 2 or claim 3 wherein said operation serves to enter a number adjacent to said at least two line segments, said command rearranging said at least two line segments at an angle designated by said number.

5. A handwriting input display apparatus comprising:

display means for displaying either a line segment of a character, corresponding to a calculation result of a computer;

tablet means, at least a portion of which is transparent, and formed on said display means, for providing coordinate data in response to an operation;

at least one input handwriting storing means for storing input handwriting corresponding to said coordinate data provided from said tablet means in response to said operation;

means for detecting a feature portion of said coordinate data which corresponds to a set of one or more characteristics of said input handwriting stored in said input handwriting storing means;

means for comparing said feature portion of said coordinate data handwriting with a feature portion of a gesture stored in a previously employed gesture data base; and

means for determining that said operation is a gesture when said feature portion is said coordinate data is similar to the feature portion of said gesture based on a comparison with a predetermined level of similarity and executing the corresponding gesture;

wherein;

when either the line segment or the character is being displayed on said display, said feature portion of said coordinate data is provided by said tablet means and in response to said feature portion of said coordinate data, a preselected command is performed to change a display condition of said line segment or said character,

wherein a plurality of line segments are displayed on said display, and said operation serves to cause said at least two line segments to intersect each other adjacent to a first set of end points of said two line segments, said command rearranging said first set of end points of at least two line segments so as to align said first set of end points on a common straight line.

6. A handwriting input display apparatus as claimed in claim 5 wherein said operation serves to cause said at least two line segments to intersect with each other at a point near a second set of end points of said line segments, said command rearranging both said first and second sets of end points of said at least two line segments on two common straight lines for representation.

7. A handwriting input display apparatus comprising:

display means for displaying either a line segment of a character, corresponding to a calculation result of a computer;

tablet means, at least a portion of which is transparent, and formed on said display means, for providing coordinate data in response to an operation;

at least one input handwriting storing means for storing input handwriting corresponding to said coordinate data provided from said tablet means in response to said operation;

means for detecting a feature portion of said coordinate data which corresponds to a set of one or more characteristics of said input handwriting stored in said input handwriting storing means;

means for comparing said feature portion of said coordinate data handwriting with a feature portion of a gesture stored in a previously employed gesture data base; and

means for determining that said operation is a gesture when said feature portion is said coordinate data is similar to the feature portion of said gesture based on a comparison with a predetermined level of similarity and executing the corresponding gesture;

wherein;

when either the line segment or the character is being displayed on said display, said feature portion of said coordinate data is provided by said tablet means and in response to said feature portion of said coordinate data, a preselected command is performed to change a display condition of said line segment or said character,

wherein a plurality of line segments are displayed on said display, and said operation serves to enter parallel lines at a predetermined angle with respect to said at least two line segments, said command rearranging said at least two line segments in parallel to each other.

8. A handwriting input display apparatus as claimed in claim 7 wherein said operation further causes said at least two line segments to intersect each other, said command rearranging cross points on said at least two line segments on a common straight line.

9. A handwriting input display apparatus comprising:

display means for displaying either a line segment of a character, corresponding to a calculation result of a computer;

tablet means, at least a portion of which is transparent, and formed on said display means, for providing coordinate data in response to an operation;

at least one input handwriting storing means for storing input handwriting corresponding to said coordinate data provided from said tablet means in response to said operation;

means for detecting a feature portion of said coordinate data which corresponds to a set of one or more characteristics of said input handwriting stored in said input handwriting storing means;

means for comparing said feature portion of said coordinate data handwriting with a feature portion of a gesture stored in a previously employed gesture data base; and

means for determining that said operation is a gesture when said feature portion is said coordinate data is similar to the feature portion of said gesture based on a comparison with a predetermined level of similarity and executing the corresponding gesture;

wherein;

when either the line segment or the character is being displayed on said display, said feature portion of said coordinate data is provided by said tablet means and in response to said feature portion of said coordinate data, a preselected command is performed to change a display condition of said line segment or said character,

wherein said operation further serves to temporarily stop execution thereof, the execution of said command being temporarily stopped until a release operation is performed.

10. A handwriting input display apparatus comprising:

display means for displaying either a line segment of a character, corresponding to a calculation result of a computer;

tablet means, at least a portion of which is transparent, and formed on said display means, for providing coordinate data in response to an operation;

at least one input handwriting storing means for storing input handwriting corresponding to said coordinate data provided from said tablet means in response to said operation;

means for detecting a feature portion of said coordinate data which corresponds to a set of one or more characteristics of said input handwriting stored in said input handwriting storing means;

means for comparing said feature portion of said coordinate data handwriting with a feature portion of a gesture stored in a previously employed gesture data base; and

means for determining that said operation is a gesture when said feature portion is said coordinate data is similar to the feature portion of said gesture based on a comparison with a predetermined level of similarity and executing the corresponding gesture;

wherein;

when either the line segment or the character is being displayed on said display, said feature portion of said coordinate data is provided by said tablet means and in response to said feature portion of said coordinate data, a preselected command is performed to chance a display condition of said line segment or said character,

wherein a plurality of characters are displayed on said display, and said operation serves to enter a straight line with a predetermined relationship with respect to said at least two characters, said command aligning said at least two characters for representation.

11. A handwriting input display apparatus comprising:

display means for displaying either a line segment of a character, corresponding to a calculation result of a computer;

tablet means, at least a portion of which is transparent, and formed on said display means, for providing coordinate data in response to an operation;

at least one input handwriting storing means for storing input handwriting corresponding to said coordinate data provided from said tablet means in response to said operation;

means for detecting a feature portion of said coordinate data which corresponds to a set of one or more characteristics of said input handwriting stored in said input handwriting storing means;

means for comparing said feature portion of said coordinate data handwriting with a feature portion of a gesture stored in a previously employed gesture data base; and

means for determining that said operation is a gesture when said feature portion is said coordinate data is similar to the feature portion of said gesture based on a comparison with a predetermined level of similarity and executing the corresponding gesture;

wherein;

when either the line segment or the character is being displayed on said display, said feature portion of said coordinate data is provided by said tablet means and in response to said feature portion of said coordinate data, a preselected command is performed to chance a display condition of said line segment or said character,

wherein said set of one or more characteristics of said input handwriting comprises a direction and a length of a straight line of a line segment.

12. A handwriting input display apparatus comprising:

display means for displaying either a line segment of a character, corresponding to a calculation result of a computer;

tablet means, at least a portion of which is transparent, and formed on said display means, for providing coordinate data in response to an operation;

at least one input handwriting storing means for storing input handwriting corresponding to said coordinate data provided from said tablet means in response to said operation;

means for detecting a feature portion of said coordinate data which corresponds to a set of one or more characteristics of said input handwriting stored in said input handwriting storing means;

means for comparing said feature portion of said coordinate data handwriting with a feature portion of a gesture stored in a previously employed gesture data base; and

means for determining that said operation is a gesture when said feature portion is said coordinate data is similar to the feature portion of said gesture based on a comparison with a predetermined level of similarity and executing the corresponding gesture;

wherein;

when either the line segment or the character is being displayed on said display, said feature portion of said coordinate data is provided by said tablet means and in response to said feature portion of said coordinate data, a preselected command is performed to change a display condition of said line segment or said character,

wherein said set of one or more characteristics of said input handwriting comprises a radius and a center angle of an arc.

13. A handwriting input display apparatus comprising:

display means for displaying either a line segment of a character, corresponding to a calculation result of a computer;

tablet means, at least a portion of which is transparent, and formed on said display means, for providing coordinate data in response to an operation;

at least one input handwriting storing means for storing input handwriting corresponding to said coordinate data provided from said tablet means in response to said operation;

means for detecting a feature portion of said coordinate data which corresponds to a set of one or more characteristics of said input handwriting stored in said input handwriting storing means;

means for comparing said feature portion of said coordinate data handwriting with a feature portion of a gesture stored in a previously employed gesture data base; and

means for determining that said operation is a gesture when said feature portion is said coordinate data is similar to the feature portion of said gesture based on a comparison with a predetermined level of similarity and executing the corresponding gesture;

wherein;

when either the line segment or the character is being displayed on said display, said feature portion of said coordinate data is provided by said tablet means and in response to said feature portion of said coordinate data, a preselected command is performed to chance a display condition of said line segment or said character,

wherein said set of one or more characteristics of said input handwriting comprises a number of loops defined by said handwriting.