Abstract: Placement by one or more input mechanisms of a touch point on a multi-touch display device that is displaying a three-dimensional object is detected. A two-dimensional location of the touch point on the multi-touch display device is determined, and the touch point is matched with a three-dimensional contact point on a surface of the three-dimensional object that is projected for display onto the image plane of the camera at the two-dimensional location of the touch point. A change in applied pressure at the touch point is detected, and a target depth value for the contact point is determined based on the change in applied pressure. A solver is used to calculate a three-dimensional transformation of the three-dimensional object using an algorithm that reduces a difference between a depth value of the contact point after object transformation and the target depth value.

Abstract: A multi-touch display device that is configured to display multiple objects concurrently and that provides multi-touch controls for manipulating multiple of the displayed objects with multiple degrees of freedom concurrently but independently is configured to reduce the degrees of freedom provided by the manipulation controls for at least two of the displayed objects in response to detecting that an input mechanism is exerting control over the two displayed objects concurrently.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for digital signal processing (DSP) techniques for generally improving a signal-to-noise ratio (SNR) of capacitive touch sensors.

Abstract: Methods and systems for interfacing with multi-input devices employ various techniques for controlling the window framing of images. Such techniques provide control, including moving, sizing, and orientating, of one or more displayed window frames in which one or more images are displayed.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for digital signal processing (DSP) techniques for generally improving a signal-to-noise ratio (SNR) of capacitive touch sensors.

Abstract: Placement by one or more input mechanisms of a touch point on a multi-touch display device that is displaying a three-dimensional object is detected. A two-dimensional location of the touch point on the multi-touch display device is determined, and the touch point is matched with a three-dimensional contact point on a surface of the three-dimensional object that is projected for display onto the image plane of the camera at the two-dimensional location of the touch point. A change in applied pressure at the touch point is detected, and a target depth value for the contact point is determined based on the change in applied pressure. A solver is used to calculate a three-dimensional transformation of the three-dimensional object using an algorithm that reduces a difference between a depth value of the contact point after object transformation and the target depth value.

Abstract: A touch-screen device includes a radiation source, a waveguide configured to receive radiation emitted by the source and to cause some of the radiation to undergo total internal reflection within the waveguide, a pliable frustrating layer disposed relative to the waveguide to enable the frustrating layer to contact the waveguide when the frustrating layer is physically deformed, the frustrating layer being configured to cause frustration of the total internal reflection of the received radiation within the waveguide when the frustrating layer is physically deformed to contact the waveguide such that some of the received escapes from the waveguide at the contact point, an imaging sensor configured to detect some of the radiation that escapes from the waveguide, and a structure disposed relative to the frustrating layer, the structure configured to steer at least a portion of the radiation that escapes from the waveguide toward the imaging sensor.

Abstract: Controlling virtual objects displayed on a display device comprises controlling display, on a display device, of multiple virtual objects, each of the multiple virtual objects being capable of movement based on a first type of input and being capable of alteration based on a second type of input that is different than the first type of input, the alteration being different from movement. User interaction relative to the display device on which the multiple virtual objects are displayed is sensed. Positions of the multiple virtual objects on the display device at a time corresponding to the sensed user interaction is determined. A subset of the multiple virtual objects as candidates for restriction based on the sensed user interaction and the determined positions of the multiple virtual objects on the display device at the time corresponding to the sensed user interaction is determined.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for input classification for multi-touch systems. In one aspect, a method includes receiving data describing a first region of contact with a touch sensitive display and a second region of contact with the touch sensitive display, the second region of contact being separate from the first region of contact. The method includes classifying the first region of contact as a touch point provided by a user's body part. The method includes classifying the second region of contact as incidental touch input provided by a user's resting body part. The method includes determining an area that is outside of the second region of contact and that extends at least a threshold distance from the second region of contact. The method includes determining a location of the touch point associated with the first region of contact.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for input classification for multi-touch systems. In one aspect, a method includes receiving first and second contact data describing a first and second series of contacts with a touch sensitive display, the first and second series of contacts occurring over a time range. The method includes classifying the first series of contacts as being a series of touch inputs provided by a user's body part, and classifying the second series of contacts as being a series of stylus inputs provided by a stylus. The method includes comparing motion represented by the series of touch inputs with motion represented by the series of stylus inputs, and determining that the motion represented by the series of touch inputs correlates with the motion represented by the series of stylus inputs. The method includes classifying the series of touch inputs.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for input classification for multi-touch systems. In one aspect, a method includes receiving data describing a first region of contact with a touch sensitive display, a second region of contact with the touch sensitive display, and a third region of contact with the touch sensitive display, the second region of contact being separate from the first region of contact and the third region of contact being separate from the first region of contact and the second region of contact. The method includes classifying the first region of contact as a touch point provided by a user's body part. The method includes classifying the second region of contact as incidental touch input provided by a user's resting body part. The method includes classifying the third region of contact as a stylus input.

Abstract: Controlling virtual objects displayed on a display device includes controlling display, on a display device, of multiple virtual objects, each of the multiple virtual objects being capable of movement based on a first type of input and being capable of alteration based on a second type of input that is different than the first type of input, the alteration being different from movement. A subset of the multiple virtual objects as candidates for restriction is identified, and based on identifying the subset of virtual objects as candidates for restriction, a responsiveness to the first type of input for the subset of virtual objects is restricted. The first type of input applied to a first virtual object included in the subset of virtual objects and a second virtual object included in the multiple virtual objects is detected, with the second virtual object being excluded from the subset of virtual objects.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for input classification for multi-touch systems. In one aspect, a method includes receiving data describing a first region of contact with a touch sensitive display and a second region of contact with the touch sensitive display. The method includes determining at least one characteristic of the first region of contact. The method includes based on the at least one characteristic of the first region of contact, determining that the first region of contact corresponds to intended touch input provided by a user's body part or stylus. The method includes determining at least one characteristic of the second region of contact. The method includes based on the at least one characteristic of the second region of contact, determining that the second region of contact corresponds to incidental touch input provided by a user's resting body part.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for input classification for multi-touch systems. In one aspect, a method includes maintaining a history of prior state information related to a touch sensitive display. The method further includes detecting that a previous contact with the touch sensitive display was incorrectly classified. The method further includes updating a classification of the previous contact based on the detection that the previous contact was incorrectly classified. The method further includes rewinding a state of the touch sensitive display to reflect a state that would have resulted had the previous contact been correctly classified based on the history of prior state information and the updated classification of the previous contact.

Abstract: Methods and systems for interfacing with multi-point input devices employ various techniques for controlling displayed images, including 2D and 3D image translation, scale/zoom, rotation control and globe axis tilt control. Various techniques employ three or more simultaneous inputs, changes in characteristics of those inputs, and pressure sensing, among other things.

Abstract: Placement by one or more input mechanisms of a touch point of a mufti-touch display device that is displaying a three-dimensional object is detected. A two-dimensional location of the touch point on the multi-touch display device is determined, and the touch point is matched with a three-dimensional contact point on a surface of the three-dimensional object that is projected for display onto the image plane of the camera at the two-dimensional location of the touch point. A change in applied pressure at the touch point is detected, and a target depth value for the contact point is determined based on the changed in applied pressure. A solver is used to calculate a three-dimensional transformation of the three-dimensional object using an algorithm that reduces a difference between a depth value of the contact point after object transformation and the target depth value.

Abstract: A touch-screen device includes a radiation source, a pliable waveguide configured to receive radiation emitted by the radiation source and to cause some of the received radiation to undergo total internal reflection within the pliable waveguide, a frustrating layer disposed relative to the pliable waveguide so as to enable the frustrating layer to contact the pliable waveguide when the pliable waveguide is physically deformed, the frustrating layer being configured to cause frustration of the total internal reflection of the received radiation within the pliable waveguide at a contact point between the frustrating layer and the pliable waveguide when the pliable waveguide is physically deformed to contact the frustrating layer such that some of the received radiation undergoing total internal reflection within the pliable waveguide escapes from the pliable waveguide at the contact point, and an imaging sensor configured to detect some of the radiation that escapes from the optical waveguide.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for digital signal processing (DSP) techniques for generally improving a signal-to-noise ratio (SNR) of capacitive touch sensors.

Abstract: Methods, systems, and apparatus relate to touch sensors that are configured to measure a true capacitive touch and a force applied to the sensor from a user. Some implementations involve the measurement of force and true capacitive touch simultaneously in a touch capacitive sensor.

Abstract: Placement by one or more input mechanisms of a touch point on a multi-touch display device that is displaying a three-dimensional object is detected. A two-dimensional location of the touch point on the multi-touch display device is determined, and the touch point is matched with a three-dimensional contact point on a surface of the three-dimensional object that is projected for display onto the image plane of the camera at the two-dimensional location of the touch point. A change in applied pressure at the touch point is detected, and a target depth value for the contact point is determined based on the change in applied pressure. A solver is used to calculate a three-dimensional transformation of the three-dimensional object using an algorithm that reduces a difference between a depth value of the contact point after object transformation and the target depth value.