US 2011/0210941 A1 · SENSING DURING NON-DISPLAY UPDATE TIME TO AVOID INTERFERENCE

Abstract

In a method of capacitive sensing using an integrated capacitive sensor device and display device, a transmitter signal is transmitted with a combination electrode of the integrated capacitive sensor device and display device. The combination electrode is configured for both capacitive sensing and display updating. The transmitter signal transitions at least twice during a non-display update time period associated with row update of the display device. A display of the display device is updated during an update time period. A resulting signal is received with a receiver electrode of the integrated capacitive sensor device and display device during the non-display update time period. The resulting signal corresponds to the transmitter signal.

Claims20

Dependent claims

A method of capacitive sensing using an integrated capacitive sensor device and display device, said method comprising:

transmitting a transmitter signal with a combination electrode of said integrated capacitive sensor device and display device, said combination electrode configured for both capacitive sensing and display updating, wherein said transmitter signal transitions at least twice during a non-display update time period associated with row update of said display device;
updating a display of said display device during an update time period;
and
receiving a resulting signal with a receiver electrode of said integrated capacitive sensor device and display device during said non-display update time period, said resulting signal corresponds to said transmitter signal.

1 more element

A touch screen device comprising:

a display device, said display device comprising a combination electrode configured for both display updating and touch sensing;
a receiver electrode proximate said combination electrode, said receiver electrode configured for touch sensing;
and
a processing system communicatively coupled with said display device, said processing system configured to:
transmit a transmitter signal with said combination electrode during a non-display update time period associated with row update of said display device, wherein said transmitter signal transitions at least two times during said non-display update time period associated with row update of said display device;
and
receive a resulting signal with said receiver electrode during said non-display update time period, said resulting signal corresponds to said transmitter signal.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/034,696Filed 24 Feb 2011

Priority

26 Feb 2010

Published

1 Sep 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G06F 3/04184
For error correction or compensation, e.g. based on parallax, calibration or alignment: synchronisation with the driving of the display or the…
G06F 3/0412
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: digitisers structurally integrated in a display
G09G 5/18
Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators: timing circuits 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

Sensing during non-display update time to avoid interference

Life of this patent

Sensing during non-display update time to avoid interference

Life of this patent

Abstract

Claims20