Patent
Multi-chip touch architecture for scalability
Shahrooz Shahparnia,Vivek Pant,Christoph Horst Krah +2 more
- 11 Jan 2016
12
TL;DR: A multi-chip touch architecture for scalability can include one or more touch controller application specific integrated circuits (ASICs) and switching circuits coupled between them and the touch sensor panel as mentioned in this paper.
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Abstract: A multi-chip touch architecture for scalability can include one or more touch controller application specific integrated circuits (ASICs), and one or more switching circuits coupled between the one or more touch controller ASICs and the touch sensor panel. The number of touch controller ASICs and switching circuits can be scaled based on the size of the touch sensor panel. The touch controller ASICs can include an interface for data transfer between the touch controller ASICs to allow for parallel processing of an image of touch by more than one touch controller ASIC. The touch controller ASIC can also include a memory directly accessible by more than one processing circuit (e.g., hardware accelerators), and circuitry to dynamically adjust the coupling between portions (e.g., banks) of memory and inputs of the one or more processing circuits to minimize data transfer and improve processing speeds.
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Citations
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Pixelated self-capacitance water rejection
Yingxuan Li,Weijun Yao,Vivek Pant,Martin P. Grunthaner,Marduke Yousefpor,Sumant Ranganathan +5 more
- 27 Oct 2015
TL;DR: In this paper, a touch sensor panel comprises a touch controller configured to drive and sense the plurality of touch node electrodes in a fully bootstrapped configuration to obtain a fully-bootstrapped touch image.
14
Patent
Flexible self-capacitance and mutual capacitance touch sensing system architecture
Christoph Horst Krah
- 28 Jan 2016
TL;DR: In this article, a switching circuit can comprise a plurality of pixel mux blocks, each of which is coupled to a respective touch node electrode on a touch sensor panel, and each of the pixels including logic circuitry.
14
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Flexible scan plan using coarse mutual capacitance and fully-guarded measurements
Marduke Yousefpor,Shwetabh Verma +1 more
- 31 Mar 2016
TL;DR: In this article, a touch controller for flexible scanning operation is described, which can include circuitry configured to perform coarse detection scans, select a fine scan type based on the results from the coarse detection scan, and perform the fine scan corresponding to the selected scan type.
11
Patent
Finger tracking in wet environment
Apexit Shah,Ari Y. Benbasat +1 more
- 25 Aug 2017
TL;DR: In this article, a state-based signal threshold is used to classify input patches as touch patches or non-touch patches based on the characteristics of edge touch nodes, which can reduce processing requirements and save power.
5
Patent
Back of cover touch sensors
Wencong Zhu,Albert Lin,Alexander A. Penn,Ashray Vinayak Gogte,Chun-hao Tung,Hao Zhang,Hui Zhou,John Z. Zhong,Steven Porter Hotelling,Sudip Mondal,Sumant Ranganathan,Sunggu Kang,Ramachandran Chundru,Viswa Pilla +13 more
- 30 Aug 2017
TL;DR: In this paper, the authors proposed to increase the trace width, spacing, and/or thickness in the border area relative to the trace length, width, and spacing in the visible/active area along one or more sides of the touch sensor panel.
5
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