Touch Sensitive Processing Apparatus Halt Interface
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Solution Overview
Problem
Touch-sensitive processing apparatuses in electronic devices often report unwanted proximity/touch events due to interference from internal components or external objects when in power-saving mode, leading to incorrect device activation and undesirable outcomes.
Innovation Solution
A touch-sensitive processing apparatus with a halt interface that allows an embedded processor to command the cessation of proximity/touch event detection and reporting when set to a specific logic state, preventing interference and unwanted actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the touch panel and touch screen remain active during power-saving mode, then touch detection function is maintained, but unwanted proximity/touch events are reported due to interference from internal components or external objects
Solution Approach 1:
The patent extracts the touch detection function from continuous operation and isolates it to specific operational states. The host processor controls the touch sensitive processing apparatus to enter a first operating state (reduced functionality) or second operating state (full functionality) based on device state, effectively separating touch detection from constant operation to eliminate false events during power-saving mode
Solution Approach 2:
The system performs preliminary action by deactivating or reducing touch detection functionality before the device enters power-saving mode or before being placed in a pocket/bag. The host processor proactively transitions the touch sensitive processing apparatus to the first operating state in advance, preventing unwanted proximity/touch events from occurring rather than reacting to them afterward
2Ease of operation
If the touch sensitive processing apparatus wakes up periodically to perform touch sensitive detection during power-saving mode, then touch functionality is maintained, but interference from pocket or bag objects causes false proximity/touch events
Solution Approach 1:
The patent implements dynamic operation by allowing the touch sensitive processing apparatus to transition between two operating states based on device context. In the first operating state, touch detection is reduced or deactivated; in the second operating state, full touch detection is active. This dynamic adaptation eliminates false events during power-saving while maintaining functionality when needed
Solution Approach 2:
The system uses feedback from the host processor to control the operating state of the touch sensitive processing apparatus. The host processor monitors device state (active, sleep, in pocket/bag) and provides feedback by commanding the touch sensitive processing apparatus to switch between operating states, ensuring touch detection accuracy is maintained through responsive state management
3Loss of information
If the touch sensitive processing apparatus reports all detected proximity/touch events to the host processor, then complete touch information is provided, but unwanted events cause incorrect device activation and undesirable outcomes
Solution Approach 1:
The host processor performs preliminary filtering by determining whether reported proximity/touch events are valid before triggering device activation. The system evaluates the context of each event (device state, operational mode) and only processes events that meet validity criteria, preventing incorrect activation while maintaining complete information flow from the touch sensitive processing apparatus
Data Source
AI summary
A touch sensitive processing apparatus comprises a touch sensitive interface for connecting electrodes of a touch screen to detect a proximity/touch event; a host interface for reporting the proximity/touch event; a halt interface; and an embedded processor configured for commanding the touch sensitive interface to cease detecting proximity/touch events and the host interface to cease reporting proximity/touch events if the halt interface is set in a first logic state.