US 2011/0210930 A1 · SENSING AND DRIVING APPARATUS, TOUCH SENSING SYSTEM, AND SENSING AND DRIVING METHOD

Abstract

A sensing and driving apparatus suitable for a sensing interface is provided. The sensing and driving apparatus includes a driving module and a sensing unit. The driving module outputs a first reference signal and a second reference signal which have different polarities with each other, and respectively transmits the first reference signal and the second reference signal to a first driving line and a second driving line of the sensing interface so as to generate a first sensing signal during a first period. The sensing unit receives the first sensing signal and detects a change of the first signal so as to generate a sensing result. A sensing and driving method, a touch sensing system and a device using the same are also provided herein.

Claims22

Dependent claims

A sensing and driving apparatus suitable for a sensing interface, the sensing and driving apparatus comprising:

a driving module, outputting a first reference signal and a second reference signal which have different polarities with each other, and respectively transmitting the first reference signal and the second reference signal to a first driving line and a second driving line of the sensing interface so as to accordingly generate a first sensing signal during a first period;
and
a sensing unit, receiving the first sensing signal and detecting a change of the first sensing signal so as to generate a sensing result accordingly.

A touch sensing system, comprising:

a sensing interface, comprising a first driving line and a second driving line;
a sensing and driving apparatus, coupled to the sensing interface and comprising:
a driving module, outputting a first reference signal and a second reference signal which have different polarities with each other, and respectively transmitting the first reference signal and the second reference signal to a first driving line and a second driving line so as to accordingly generate a first sensing signal during a first period;
and
a sensing unit, receiving the first sensing signal and detecting a change of the first sensing signal so as to generate a sensing result accordingly;
and
a processing unit, determining a touch position of the sensing interface according to the sensing result.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/037,364Filed 1 Mar 2011

Priority

TW 991058071 Mar 2010

Published

1 Sep 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

G06F 3/0416
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: control or interface arrangements specially adapted for…
G06F 3/0446
By capacitive means: using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
G06F 2203/04101
Indexing scheme relating to G06F3/041 - G06F3/045: 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus,…
G06F
Computing and data processing

Sensing and driving apparatus, touch sensing system, and sensing and driving method

Life of this patent

Sensing and driving apparatus, touch sensing system, and sensing and driving method

Life of this patent

Abstract

Claims22