Abstract: An audio signal analysis method is provided for detecting the opening and closing of a medicine bottle cap in a robust manner using a micro speaker and a microphone along with associated mixed signal electronics. It is also used for robust tamper detection and for monitoring liquid medication consumption accurately. In a preferred embodiment an un-modulated OFDM signal is used that covers the entire operating audio spectrum. In another embodiment, Complimentary code based phase encoding of the subcarrier phases is used to reduce the peak to average power of the OFDM signal, thereby enabling higher transmit power of the audio signal to mitigate against interference. A suitable wireless device can be co-located with the mixed signal electronics for sending the bottle usage, medication reminder alarm, and tamper status to the medication compliance monitoring system or to the user's cell phone.

Abstract: A projected capacitive touch panel that can detect touch pressure. The cover layer of projected capacitive touch panel has protrusions with gaps that fill up partially when finger is pressed, thereby registering a large change in projected capacitance. A keyboard using such device with optional mechanical switches underneath the touch surface for tactile feedback. Haptic feedback is coupled to detection of touch pressure. Reconfigurable keyboard and trackpad regions on a touch panel sensitive to touch pressure with tactile feedback from underlying mechanical switches. A mouse with left and right click support using projected capacitive touchpad with pressure detection for mouse click. Human finger based mimicking of mouse operation in combination with touch pressure detection. Supporting gestures that use touch pressure. Providing a visual feedback in an underlying display when touch pressure is detected. Providing an audio feedback when touch pressure is detected.

Abstract: A projected capacitive touch panel that can detect touch pressure. The cover layer of projected capacitive touch panel has protrusions with gaps that fill up partially when finger is pressed, thereby registering a large change in projected capacitance. A keyboard using such device with optional mechanical switches underneath the touch surface for tactile feedback. Haptic feedback is coupled to detection of touch pressure. Reconfigurable keyboard and trackpad regions on a touch panel sensitive to touch pressure with tactile feedback from underlying mechanical switches. A mouse with left and right click support using projected capacitive touchpad with pressure detection for mouse click. Human finger based mimicking of mouse operation in combination with touch pressure detection. Supporting gestures that use touch pressure. Providing a visual feedback in an underlying display when touch pressure is detected. Providing an audio feedback when touch pressure is detected.

Abstract: An audio signal analysis method is provided for detecting the opening and closing of a medicine bottle cap in a robust manner using a micro speaker and a microphone along with associated mixed signal electronics. It is also used for robust tamper detection and for monitoring liquid medication consumption accurately. In a preferred embodiment an un-modulated OFDM signal is used that covers the entire operating audio spectrum. In another embodiment, Complimentary code based phase encoding of the subcarrier phases is used to reduce the peak to average power of the OFDM signal, thereby enabling higher transmit power of the audio signal to mitigate against interference. A suitable wireless device can be co-located with the mixed signal electronics for sending the bottle usage, medication reminder alarm, and tamper status to the medication compliance monitoring system or to the user's cell phone.