Site News  |   Monitor Keywords  |   Monitor Archive  |   Organizer  |   Account Info  |

Gestures for touch sensitive input devices

Gestures for touch sensitive input devices description/claims

This application is a continuation of U.S. patent application Ser. No. 10/903,964 filed Jul. 30, 2004, which is hereby incorporated by reference in its entirety.

1. Field of the Invention

The present invention relates generally to gesturing associated with touch sensitive devices.

2. Description of the Related Art

There exist today many styles of input devices for performing operations in a computer system. The operations generally correspond to moving a cursor and making selections on a display screen. The operations may also include paging, scrolling, panning, zooming, etc. By way of example, the input devices may include buttons, switches, keyboards, mice, trackballs, touch pads, joy sticks, touch screens and the like. Each of these devices has advantages and disadvantages that are taken into account when designing the computer system.

Buttons and switches are generally mechanical in nature and provide limited control with regards to the movement of the cursor and making selections. For example, they are generally dedicated to moving the cursor in a specific direction (e.g., arrow keys) or to making specific selections (e.g., enter, delete, number, etc.).

In mice, the movement of the input pointer corresponds to the relative movements of the mouse as the user moves the mouse along a surface. In trackballs, the movement of the input pointer corresponds to the relative movements of a ball as the user moves the ball within a housing. Mice and trackballs also include one or more buttons for making selections. Mice may also include scroll wheels that allow a user to move through the GUI by simply rolling the wheel forward or backward.

With touch pads, the movement of the input pointer corresponds to the relative movements of the user's finger (or stylus) as the finger is moved along a surface of the touch pad. Touch screens, on the other hand, are a type of display screen that has a touch-sensitive transparent panel covering the screen. When using a touch screen, a user makes a selection on the display screen by pointing directly to GUI objects on the screen (usually with a stylus or finger).

In order to provide additionally functionality, gestures have been implemented with some of these input devices. By way of example, in touch pads, selections may be made when one or more taps are detected on the surface of the touch pad. In some cases, any portion of the touch pad may be tapped, and in other cases a dedicated portion of the touch pad may be tapped. In addition to selections, scrolling may be initiated by using finger motion at the edge of the touch pad.

U.S. Pat. Nos. 5,612,719 and 5,590,219, assigned to Apple Computer, Inc. describe some other uses of gesturing. U.S. Pat. No. 5,612,719 discloses an onscreen button that is responsive to at least two different button gestures made on the screen on or near the button. U.S. Pat. No. 5,590,219 discloses a method for recognizing an ellipse-type gesture input on a display screen of a computer system.

In recent times, more advanced gestures have been implemented. For example, scrolling may be initiated by placing four fingers on the touch pad so that the scrolling gesture is recognized and thereafter moving these fingers on the touch pad to perform scrolling events. The methods for implementing these advanced gestures, however, has several drawbacks. By way of example, once the gesture is set, it cannot be changed until the user resets the gesture state. In touch pads, for example, if four fingers equals scrolling, and the user puts a thumb down after the four fingers are recognized, any action associated with the new gesture including four fingers and the thumb will not be performed until the entire hand is lifted off the touch pad and put back down again (e.g., reset). Simply put, the user cannot change gesture states midstream. Along a similar vein, only one gesture may be performed at any given time. That is, multiple gestures cannot be performed simultaneously.

Based on the above, there is a need for improvements in the way gestures are performed on touch sensitive devices.

The invention relates, in one embodiment, to a computer implemented method for processing touch inputs. The method includes reading data from a multipoint touch screen. The data pertains to touch input with respect to the touch screen. The method also includes identifying at least one multipoint gesture based on the data from the multipoint touch screen.

The invention relates, in another embodiment to a gestural method. The method includes detecting multiple touches at different points on a touch sensitive surface at the same time. The method also includes segregating the multiple touches into at least two separate gestural inputs occurring simultaneously. Each gestural input has a different function such as zooming, panning, rotating and the like.

The invention relates, in another embodiment to a gestural method. The method includes concurrently detecting a plurality of gestures that are concurrently performed with reference to a touch sensing device. The method also includes producing different commands for each of the gestures that have been detected.

The invention relates, in another embodiment to a gestural method. The method includes displaying a graphical image on a display screen. The method also includes detecting a plurality of touches at the same time on a touch sensitive device. The method further includes linking the detected multiple touches to the graphical image presented on the display screen.

The invention relates, in another embodiment to a method of invoking a user interface element on a display via a multipoint touch screen of a computing system. The method includes detecting and analyzing the simultaneous presence of two or more objects in contact with the multipoint touch screen. The method also includes selecting a user interface tool, from a plurality of available tools, to display on a display for interaction by a user of the computing system based at least in part the analyzing. The method further includes controlling the interface tool based at least in part on the further movement of the objects in relation to the multipoint touch screen.

The invention relates, in another embodiment, to a touch-based method. The method includes detecting a user input that occurs over a multipoint sensing device. The user input includes one or more inputs. Each input has a unique identifier. The method also includes, during the user input, classifying the user input as a tracking or selecting input when the user input includes one unique identifier or a gesture input when the user input includes at least two unique identifiers. The method further includes performing tracking or selecting during the user input when the user input is classified as a tracking or selecting input. The method additionally includes performing one or more control actions during the user input when the user input is classified as a gesturing input. The control actions being based at least in part on changes that occur between the at least two unique identifiers.

• What Is a Patent?
• What Is a Trademark or Servicemark?
• What Is a Copyright?
• Patent Laws