Wake-on-touch for vibration sensing touch input devices
First Claim
Patent Images
1. A touch input device, comprising:
- a substrate configured to support bending wave vibrations;
a plurality of sensors coupled to the substrate and configured to sense vibrations propagating in the substrate;
controller electronics coupled to the sensors and configured to calculate touch location using information from sensed vibrations indicative of a touch communicated to the substrate; and
wake-up circuitry coupled to the sensors and the controller electronics, the wake-up circuitry configured to discriminate between sensed vibrations propagating in the substrate indicative of an intended touch and sensed vibrations propagating in the substrate indicative of an unintended touch, the wake-up circuitry, in response to the sensed vibrations propagating in the substrate indicative of the intended touch, configured to generate a wake-up signal and communicate the wake-up signal to the controller electronics.
2 Assignments
0 Petitions
Accused Products
Abstract
Bending wave vibrations propagating in a substrate of a touch input device are sensed. Provision is made for discriminating between sensed vibrations propagating in the substrate indicative of an intended touch and sensed vibrations propagating in the substrate indicative of an unintended touch. In response to the sensed vibrations propagating in the substrate indicative of the intended touch, a wake-up signal is generated. The wake-up signal is communicated to a control system of the touch input device for transitioning the control system from a sleep state to an operational state.
115 Citations
51 Claims
-
1. A touch input device, comprising:
-
a substrate configured to support bending wave vibrations; a plurality of sensors coupled to the substrate and configured to sense vibrations propagating in the substrate; controller electronics coupled to the sensors and configured to calculate touch location using information from sensed vibrations indicative of a touch communicated to the substrate; and wake-up circuitry coupled to the sensors and the controller electronics, the wake-up circuitry configured to discriminate between sensed vibrations propagating in the substrate indicative of an intended touch and sensed vibrations propagating in the substrate indicative of an unintended touch, the wake-up circuitry, in response to the sensed vibrations propagating in the substrate indicative of the intended touch, configured to generate a wake-up signal and communicate the wake-up signal to the controller electronics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A touch input device, comprising:
-
a substrate configured to support bending wave vibrations; a plurality of sensors coupled to the substrate and configured to sense vibrations propagating in the substrate; controller electronics coupled to the sensors and configured to calculate touch location using information from sensed vibrations indicative of a touch communicated to the substrate; at least one excitation transducer coupled to the substrate, the excitation transducer imparting excitation vibrations to the substrate; and wake-up circuitry coupled to the sensors, the controller, and the excitation transducer, the wake-up circuitry configured to detect a response of the excitation vibrations to touch vibrations imparted to the substrate and discriminate between sensed vibrations propagating in the substrate indicative of an intended touch and sensed vibrations propagating in the substrate indicative of an unintended touch, the wake-up circuitry, in response to the sensed vibrations propagating in the substrate indicative of the intended touch, configured to generate a wake-up signal and communicate the wake-up signal to the controller electronics. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
-
36. A method, comprising:
-
sensing bending wave vibrations propagating in a substrate of a touch input device; discriminating between sensed vibrations propagating in the substrate indicative of an intended touch and sensed vibrations propagating in the substrate indicative of an unintended touch; in response to the sensed vibrations propagating in the substrate indicative of the intended touch, generating a wake-up signal; and communicating the wake-up signal to a control system for transitioning the control system from a sleep state to an operational state. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
-
-
51. A touch input device, comprising:
-
means for sensing bending wave vibrations propagating in a substrate of a touch input device; means for discriminating between sensed vibrations propagating in the substrate indicative of an intended touch and sensed vibrations propagating in the substrate indicative of an unintended touch; means for generating a wake-up signal in response to the sensed vibrations propagating in the substrate indicative of the intended touch; and means for communicating the wake-up signal to a control system, whereby the control system transitions from a sleep state to an operational state in response to the wake-up signal.
-
Specification