Abstract: Techniques for providing multi-user multi-touch projected capacitive touch sensors are disclosed herein. Some embodiments may include a method that includes receiving a first sense signal indicating a first touch attributed to a first touch entity and receiving a second sense signal indicating a second touch attributed to a second touch entity. Based on the first sense signal and second sense signal, the method may further include determining that the first touch entity and the second touch entity are a common touch entity. Furthermore, the method may include initiating an event in response to determining that the first touch entity and the second touch entity form a common touch entity.

Abstract: Systems and related methods providing for touch sensors using high sensitivity Lamb waves are disclosed herein. A touch controller may comprise circuitry having operating frequency characteristics, including an operating frequency f and a frequency spread ?f; and circuitry configured to minimize effects of dispersion based upon at least one of selected operating frequency characteristics relative to a frequency dependence of a group velocity of propagating waves and a frequency dependent phase error, wherein the touch controller generates an excitation signal.

Abstract: System, method, and computer program products are provided that can support touch interaction from multiple users on a large scale projective capacitive (PCAP) display system, such as a gaming table. According to an embodiment, a system includes a touchscreen coupled to a controller. The controller adjusts performance of the touchscreen through dynamically setting a controller parameter to support altered touch reporting in a first area of the touchscreen compared to a second area of the touchscreen. The controller enables touch detection for the first area according to performance characteristics needed for an application operating in the second area. An altered touch reporting area may be a fast scan area or a slow scan area. In addition, enrichment data areas may include at least one of a fast scan area, a slow scan area, or an area of a touchscreen during a full scan.

Abstract: Techniques for providing multi-user multi-touch projected capacitive touch sensors are disclosed herein. Some embodiments may include a touch sensor including a touch substrate with a touch surface, a sensing array, and a controller. The sensing array may be configured to provide sense signals indicating a first touch and a second touch occurring concurrently on the touch surface of the touch substrate. The controller may be configured to receive the sense signals from the sensing array and based on the sense signals, determine whether the first touch and the second touch share at least one anti-ghost. In response to determining that the first touch and the second touch share the at least one anti-ghost, the controller may be configured associate the first touch and the second touch with a common touch entity, such as an individual person.

Abstract: A capacitive touch sensitive device includes a matrix of pads patterned in a first electrically conductive material on a substrate. Horizontally adjacent pads within each even row of the matrix are electrically coupled to one another via channels to form a plurality of horizontally arranged electrodes. Insulators are positioned over respective channels. Conductive links are formed over respective insulators and are configured to electrically couple vertically adjacent pads between odd rows of the matrix to form a plurality of vertically arranged electrodes. The dimensions of the channels and the conductive links are configured such that an RC time-constant (RCtc) of each of the vertically arranged electrodes substantially matches an RCtc of each of the horizontally arranged electrodes.

Abstract: Systems and related methods providing for touch sensors using high sensitivity Lamb waves are disclosed herein. A touch apparatus may include a substrate having a front surface and a back surface, where the touch region is on the front surface. The touch apparatus may be configured to propagate surface acoustic waves on at least a portion of the back surface and high sensitivity lamb waves, such as near-longitudinal-resonance Lamb waves, in at least a portion of the touch region of the substrate. The touch system may further include circuitry configured to determine a location of a touch on the front surface based on received attenuations in the high sensitivity Lamb waves. Some embodiments may provide for bezel-less touch sensor designs and anti-dispersion techniques that enhance touch sensor reliability.

Abstract: An acoustic touch apparatus that utilizes the transfer of surface acoustic waves from one surface, through the touch substrate, to another surface to enable multi-touch capabilities.

Abstract: Techniques for providing multi-user multi-touch projected capacitive touch sensors are disclosed herein. Some embodiments may include a touch sensor including a touch substrate with a touch surface, a sensing array, and a controller. The sensing array may be configured to provide sense signals indicating a first touch and a second touch occurring concurrently on the touch surface of the touch substrate. The controller may be configured to receive the sense signals from the sensing array and based on the sense signals, determine whether the first touch and the second touch share at least one anti-ghost. In response to determining that the first touch and the second touch share the at least one anti-ghost, the controller may be configured associate the first touch and the second touch with a common touch entity, such as an individual person.

Abstract: An acoustic touch apparatus that utilizes the transfer of surface acoustic waves from one surface, through the touch substrate, to another surface to enable multi-touch capabilities.

Abstract: Surface acoustic waves in a radial pattern are used to detect touch. Different radial transducer arrangements may allow for locating multiple simultaneous touches without ambiguity. Instead of transmitting along a line to be reflected at multiple points, the surface acoustic waves are transmitted radially. The surface acoustic waves are transmitted along different angles in an angular span spread out over at least part of the touch region. Using acoustic waves traveling along intersecting paths, a point location of a touch may be determined by detection, in part, of at least one angle.

Abstract: Techniques for providing multi-user multi-touch projected capacitive touch sensors are disclosed herein. Some embodiments may include a touch sensor including a touch substrate with a touch surface, a sensing array, and a controller. The sensing array may be configured to provide sense signals indicating a first touch and a second touch occurring concurrently on the touch surface of the touch substrate. The controller may be configured to receive the sense signals from the sensing array and based on the sense signals, determine whether the first touch and the second touch share at least one anti-ghost. In response to determining that the first touch and the second touch share the at least one anti-ghost, the controller may be configured associate the first touch and the second touch with a common touch entity, such as an individual person.

Abstract: A capacitive touch sensitive device includes a matrix of pads patterned in a first electrically conductive material on a substrate. Horizontally adjacent pads within each even row of the matrix are electrically coupled to one another via channels to form a plurality of horizontally arranged electrodes. Insulators are positioned over respective channels. Conductive links are formed over respective insulators and are configured to electrically couple vertically adjacent pads between odd rows of the matrix to form a plurality of vertically arranged electrodes. The dimensions of the channels and the conductive links are configured such that an RC time-constant (RCtc) of each of the vertically arranged electrodes substantially matches an RCtc of each of the horizontally arranged electrodes.

Abstract: An acoustic touch apparatus that utilizes the transfer of surface acoustic waves from one surface, through the touch substrate, to another surface to enable multi-touch capabilities.

Abstract: A capacitive touch sensitive device includes a matrix of pads patterned in a first electrically conductive material on a substrate. Horizontally adjacent pads within each even row of the matrix are electrically coupled to one another via channels to form a plurality of horizontally arranged electrodes. Insulators are positioned over respective channels. Conductive links are formed over respective insulators and are configured to electrically couple vertically adjacent pads between odd rows of the matrix to form a plurality of vertically arranged electrodes. The dimensions of the channels and the conductive links are configured such that an RC time-constant (RCtc) of each of the vertically arranged electrodes substantially matches an RCtc of each of the horizontally arranged electrodes.

Abstract: A capacitive touch sensitive device includes a matrix of pads patterned in a first electrically conductive material on a substrate. Horizontally adjacent pads within each even row of the matrix are electrically coupled to one another via channels to form a plurality of horizontally arranged electrodes. Insulators are positioned over respective channels. Conductive links are formed over respective insulators and are configured to electrically couple vertically adjacent pads between odd rows of the matrix to form a plurality of vertically arranged electrodes. The dimensions of the channels and the conductive links are configured such that an RC time-constant (RCtc) of each of the vertically arranged electrodes substantially matches an RCtc of each of the horizontally arranged electrodes.

Abstract: A capacitive touch sensitive device includes a matrix of pads patterned in a first electrically conductive material on a substrate. Horizontally adjacent pads within each even row of the matrix are electrically coupled to one another via channels to form a plurality of horizontally arranged electrodes. Insulators are positioned over respective channels. Conductive links are formed over respective insulators and are configured to electrically couple vertically adjacent pads between odd rows of the matrix to form a plurality of vertically arranged electrodes. The dimensions of the channels and the conductive links are configured such that an RC time-constant (RCtc) of each of the vertically arranged electrodes substantially matches an RCtc of each of the horizontally arranged electrodes.

Abstract: Techniques for providing multi-user multi-touch projected capacitive touch sensors are disclosed herein. Some embodiments may include a touch sensor including a touch substrate with a touch surface, a sensing array, and a controller. The sensing array may be configured to provide sense signals indicating a first touch and a second touch occurring concurrently on the touch surface of the touch substrate. The controller may be configured to receive the sense signals from the sensing array and based on the sense signals, determine whether the first touch and the second touch share at least one anti-ghost. In response to determining that the first touch and the second touch share the at least one anti-ghost, the controller may be configured associate the first touch and the second touch with a common touch entity, such as an individual person.

Abstract: A capacitive touch sensitive device includes a matrix of pads patterned in a first electrically conductive material on a substrate. Horizontally adjacent pads within each even row of the matrix are electrically coupled to one another via channels to form a plurality of horizontally arranged electrodes. Insulators are positioned over respective channels. Conductive links are formed over respective insulators and are configured to electrically couple vertically adjacent pads between odd rows of the matrix to form a plurality of vertically arranged electrodes. The dimensions of the channels and the conductive links are configured such that an RC time-constant (RCtc) of each of the vertically arranged electrodes substantially matches an RCtc of each of the horizontally arranged electrodes.

Abstract: An acoustic touch apparatus that utilizes the transfer of surface acoustic waves from one surface, through the touch substrate, to another surface to enable multi-touch capabilities.

Abstract: Surface acoustic waves in a radial pattern are used to detect touch. Different radial transducer arrangements may allow for locating multiple simultaneous touches without ambiguity. Instead of transmitting along a line to be reflected at multiple points, the surface acoustic waves are transmitted radially. The surface acoustic waves are transmitted along different angles in an angular span spread out over at least part of the touch region. Using acoustic waves traveling along intersecting paths, a point location of a touch may be determined by detection, in part, of at least one angle.