Abstract: A propagating signal is propagated through a propagating medium to a plurality of receivers coupled to the propagating medium. A signal affected by a disturbance of the propagating medium is received. The received signal includes a signal portion that corresponds to the propagating signal that has been disturbed by the disturbance. At least a portion of a version of the signal portion of the received signal that corresponds to the propagating signal that has been disturbed by the disturbance is compared with one or more reference signal signatures of one or more disturbance types. Based at least in part on the comparison, it is determined that one of the one or more disturbance types corresponds to the disturbance of propagating medium.

Abstract: An indicator identifying a force intensity of a touch input provided on a touch input surface is received. It is determined that the touch input is associated with an audio volume control. An audio volume is controlled based at least in part on the indicator identifying the force intensity of the touch input.

Abstract: A signal to be used to propagate a propagating signal through a propagating medium with a touch input surface is sent. The propagating signal has been allowed to propagate through the propagating medium to a plurality of receivers coupled to the propagating medium. A received signal affected by a contact contacting the touch input surface is received. At least a portion of the received signal is compared with one or more reference signal signatures.

Abstract: An indicator identifying a force intensity of a touch input provided on a touch input surface is received. It is determined that the touch input is associated with an audio volume control. An audio volume is controlled based at least in part on the indicator identifying the force intensity of the touch input.

Abstract: Techniques for detecting touch inputs are described. A system for detecting touch inputs includes force sensors, touch sensors, one or more processors and one or more memories coupled to the processor(s) and configured to provide the processor(s) with instructions. The processor(s) receive force measurements from the force sensor(s) and receive imputed force measurements from the touch sensor(s). Based on at least the imputed force measurements, the processor(s) identify touch inputs. One or more touch input criteria are calibrated based upon the force measurements and the imputed force measurements.

Abstract: A signal to be used to propagate a propagating signal through a propagating medium with a touch input surface is sent. The propagating signal has been allowed to propagate through the propagating medium to a plurality of receivers coupled to the propagating medium. A received signal affected by a contact contacting the touch input surface is received. At least a portion of the received signal is compared with one or more reference signal signatures.

Abstract: A haptic feedback system is disclosed. The system includes a plurality of remote transmitters that are remote from a location of interest on a surface of the system. The system includes a signal generator that generates a signal for each of the remote transmitters. The remote transmitters propagate the signals through a medium of the surface and the signals interfere at the location of interest such that a localized disturbance is generated at the location of interest.

Abstract: An assembly is configured to be coupled to a propagating medium. The assembly includes a first conductive layer including a first set of parallel conductors, a second conductive layer including a second set of parallel conductors, and a piezoelectric material layer between the first conductive layer and the second conductive layer. Different piezoelectric transducer nodes are formed at intersections between the first set of parallel conductors and the second set of parallel conductors.

Abstract: A signal to be used to propagate a propagating signal through a propagating medium with a touch input surface is sent. The propagating signal has been allowed to propagate through the propagating medium to a plurality of receivers coupled to the propagating medium. A received signal affected by a contact contacting the touch input surface is received. At least a portion of the received signal is compared with one or more reference signal signatures.

Abstract: A device activation system is described. The device activation system includes a sensor and a signal processor. The signal processor receives a disturbance detection signal from the sensor. In response, the signal processor enables detection of a power-on touch input.

Abstract: Techniques for detecting touch inputs are described. A system for detecting touch inputs includes force sensors, touch sensors, one or more processors and one or more memories coupled to the processor(s) and configured to provide the processor(s) with instructions. The processor(s) receive force measurements from the force sensor(s) and receive imputed force measurements from the touch sensor(s). Based on at least the imputed force measurements, the processor(s) identify touch inputs. One or more touch input criteria are calibrated based upon the force measurements and the imputed force measurements.

Abstract: A haptic feedback system is disclosed. The system includes a plurality of remote transmitters that are remote from a location of interest on a surface of the system. The system includes a signal generator that generates a signal for each of the remote transmitters. The remote transmitters propagate the signals through a medium of the surface and the signals interfere at the location of interest such that a localized disturbance is generated at the location of interest.

Abstract: An indicator identifying a force intensity of a touch input provided on a touch input surface is received. It is determined that the touch input is associated with an audio volume control. An audio volume is controlled based at least in part on the indicator identifying the force intensity of the touch input.

Abstract: A system includes a physical disturbance sensor, a transmitter and a signal receiver. The physical disturbance sensor is coupled to a first medium. The transmitter is configured to send a signal to the physical disturbance sensor. The first medium is coupled to a second medium by an adhesive interface. At least a portion of the adhesive interface is between the first medium and the second medium. The signal receiver is electrically connected to the physical disturbance sensor and configured to receive a received signal from the physical disturbance sensor. The received signal from the physical disturbance sensor is correlated with the signal in determining a measure of a physical disturbance to the second medium that causes a change in the adhesive interface.

Abstract: A propagating signal transmitted through a propagating medium is received where a detected disturbance to a signal property of the propagating signal is analyzed to detect whether a touch input has been provided. It is determined whether the detected disturbance matches a signature and in the event it is determined that the detected disturbance matches the signature, it is determined that the detected disturbance does not correspond to the touch input.

Abstract: An indicator identifying a force intensity of a touch input provided on a touch input surface is received. It is determined that the touch input is associated with an audio volume control. An audio volume is controlled based at least in part on the indicator identifying the force intensity of the touch input.

Abstract: A signal to be used to propagate a propagating signal through a propagating medium with a touch input surface is sent. The propagating signal has been allowed to propagate through the propagating medium to a plurality of receivers coupled to the propagating medium. A received signal affected by a contact contacting the touch input surface is received. At least a portion of the received signal is compared with one or more reference signal signatures.

Abstract: A system including sensors and a processor is described. The sensors are configured to sense force. The processor is configured to receive force measurements from the sensors and identify touch locations based on the force measurements. The processor is further configured to provide at least one user interface element based on the touch locations.

Abstract: A touch input is detected. From a plurality of transmitters coupled to a propagating medium, propagating signals are emitted through the propagating medium. At a plurality of receivers coupled to the propagating medium, one or more of the propagating signals that have been disturbed by the touch input are received. The plurality of transmitters and the plurality of receivers are coupled to the propagating medium on an internal side of a device sidewall. One or more detected propagating signals that have been disturbed by the touch input are analyzed to identify the touch input on an external surface of the device sidewall.

Abstract: Detecting a touch input force is disclosed. A signal to be used to propagate a propagating signal through a propagating medium with a surface is sent. The propagating signal that has been disturbed by a touch input with an amount of force on the surface is received. The received signal is processed to determine an identifier associated with the amount of force.