METHOD FOR REDUCING LATENCY WHEN USING MULTI-TOUCH GESTURE ON TOUCHPAD

• US 20100053099A1
• Filed: 06/26/2009
• Published: 03/04/2010
• Est. Priority Date: 06/26/2008
• Status: Active Grant

• Current Assignee: Cirque Corporation (Alps Alpine Co., Ltd.)
• Original Assignee: Cirque Corporation (Alps Alpine Co., Ltd.)
• Inventors: Vincent, Paul, Woolley, Richard D.
• Granted Patent: US 8,368,667 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

A method for executing single and multi-touch gestures that will be immediately recognized by the touchpad without having to wait for any portion of the gesture to be performed, thereby eliminating latency that can be caused by the touchpad or touchscreen having to wait for a portion of the gesture to be performed.

Claims

1. A method for reducing latency in recognizing a gesture on a touch-sensitive surface, said method comprising the steps of:

1) making touchdown on a touch-sensitive surface with at least one pointing object; and

2) immediately recognizing which function is to be performed by the at least one pointing object without having to wait and determine which gesture is being performed from an analysis of movement of the at least one pointing object.

2. The method as defined in claim 1 wherein the step of making touchdown further comprises the steps of:

1) making touchdown with a single pointing object; and

2) performing a function associated with touchdown of the single pointing object.

3. The method as defined in claim 2 wherein the method further comprises the step of making the function associated with touchdown of the single pointing object a dynamically assigned function, where a user may select the function that is to be performed.

4. The method as defined in claim 1 wherein the step of making touchdown further comprises the steps of:

1) making touchdown with a plurality of pointing objects; and

2) recognizing a multi-touch gesture at touchdown based on the number of pointing objects making touchdown on the touch-sensitive surface, and not based on subsequent movement of one or more of the plurality of pointing objects.

5. The method as defined in claim 4 wherein the method further comprises the step of providing input parameters for performance of the multi-touch gesture by performing movement of one or more of the plurality of pointing objects.

6. The method as defined in claim 1 wherein the step of making touchdown further comprises the steps of:

1) making touchdown with a plurality of pointing objects; and

2) recognizing a multi-touch gesture at touchdown based on the number of pointing objects making touchdown on the touch-sensitive surface and not based on subsequent movement of one or more of the plurality of pointing objects, and based on at least one of the plurality of pointing objects making touchdown at least partially within a specific region of the touch-sensitive surface that is assigned to a specific function.

7. The method as defined in claim 6 wherein the method further comprises the step of providing input parameters for performance of the multi-touch gesture by performing movement of one or more of the plurality of pointing objects.

8. The method as defined in claim 1 wherein the step of making touchdown further comprises the steps of:

1) making touchdown with a plurality of pointing objects; and

2) recognizing a multi-touch gesture at touchdown based on the number of pointing objects making touchdown on the touch-sensitive surface, and not based on subsequent movement of one or more of the plurality of pointing objects, and by a physical distance between the plurality of pointing objects.

9. The method as defined in claim 8 wherein the method further comprises the step of assigning a function to a plurality of pointing objects when the plurality of pointing objects are closely grouped together so that the plurality of pointing objects appear to touch each other.

10. The method as defined in claim 8 wherein the method further comprises the step of assigning a function to a plurality of pointing objects when the plurality of pointing objects are not closely grouped together so that the plurality of pointing objects appear to not touch each other.

11. The method as defined in claim 8 wherein the method further comprises the step of assigning a function to a plurality of pointing objects when some of the plurality of pointing objects are closely grouped together so that some of the plurality of pointing objects appear to touch each other, and when some of the plurality of pointing objects are also spaced apart so that some of the plurality of pointing objects appear to not be touching each other.

12. A method for reducing latency in recognizing a gesture on a touch-sensitive surface, said method comprising the steps of:

1) making touchdown on a touch-sensitive surface with a plurality of pointing objects but without having to detect and track the each of the plurality of pointing objects;

2) determining an outer boundary of all of the plurality of pointing objects by scanning to detect the presence of one of the plurality of pointing objects by scanning from an outer edge of each of the outer edges of the touch-sensitive surface, and moving inwards until the presence is detected, thereby identifying an outer boundary of a single large object as defined by the plurality of pointing objects; and

3) using the single large object for gesture control.

13. The method as defined in claim 12 wherein the method further comprises the step of determining if the single large object has made touchdown at least partially within a particular region of the touch-sensitive surface in order to determine which function is to be performed.