Back to results
US 12,608,110 B2Granted
Multipoint touch and hover touch-compatible sensing device and sensing method thereof
AssigneeNovatek Microelectronics Corp.
InventorsPin-Wei Huang, Hsin-Ting Chan, Ding-Teng Shih, Shi-Hao Huang
Life of this patent
Estimating the term…
Abstract
A sensing device includes a touch panel and a control circuit coupled to the touch panel. The touch panel includes touch sensors arranged in a matrix of x columns and y rows, and is used to generate touch data upon being scanned. The control circuit is used to scan the touch panel and differentiate between a normal touch event and a hover touch event according to the touch data.
Claims25
A sensing device comprising:
- a touch panel comprising touch sensors to generate touch data upon being scanned, the touch sensors being arranged in a matrix of x columns and y rows, x and y being positive integers exceeding 1, the touch data comprising two-dimensional (2D) touch data;
- and
- a control circuit coupled to the touch panel to scan the touch panel to generate the 2D touch data and differentiate between a normal touch event and a hover touch event according to the touch data;
- wherein the control circuit scans a touch sensor of the touch sensors multiple times to generate raw touch data of the touch sensor;
- the control circuit comprises:
- an analog summing circuit to accumulate the raw touch data of the touch sensor to generate analog touch data of the touch sensor during a scan term;
- and
- a digital summing circuit coupled to the analog summing circuit to accumulate the analog touch data of the touch sensor repeatedly to generate 2D touch data of the touch sensor during the scan term.
5 more elements
A sensing method comprising:
- a touch panel generating touch data upon being scanned, wherein the touch panel comprises touch sensors arranged in a matrix of x columns and y rows, x and y being positive integers exceeding 1, the touch data comprising two-dimensional (2D) touch data;
- and
- a control circuit scanning the touch panel to generate the 2D touch data and differentiating between a normal touch event and a hover touch event according to the touch data;
- wherein scanning the touch panel to generate the 2D touch data comprises:
- the control circuit scanning a touch sensor of the touch sensors multiple times to generate raw touch data of the touch sensor;
- an analog summing circuit of the control circuit accumulating the raw touch data of the touch sensor to generate analog touch data of the touch sensor during a scan term;
- and
- a digital summing circuit of the control circuit accumulating the analog touch data of the touch sensor repeatedly to generate 2D touch data of the touch sensor during the scan term.
5 more elements
A sensing device comprising:
- a touch panel comprising touch sensors to generate touch data upon being scanned, the touch sensors being arranged in a matrix of x columns and y rows, x and y being positive integers exceeding 1;
- and
- a control circuit coupled to the touch panel to scan the touch panel and differentiate between a normal touch event and a hover touch event according to the touch data;
- wherein:
- the touch panel is fully scanned in a frame period comprising N scan terms, N being a positive integer exceeding 1;
- the touch data comprise 1D touch data and 2D touch data;
- the control circuit performs at least one 1D scan on the touch sensors to generate the 1D touch data during at least one scan term of the N scan terms, and performs 2D scans on the touch sensors to generate the 2D touch data during remaining scan terms of the N scan terms;
- and
- the at least one 1D scan is evenly distributed among the 2D scans.
6 more elements
Dependencies are inferred from the claim text.