TOUCH SENSING APPARATUS AND TOUCH SENSING METHOD
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jan 7, 2016
app pub date -
Apr 16, 2015
filing date -
Jul 1, 2014
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A touch sensing apparatus includes an excitation source, a capacitor under test, a sampling circuit and a filter. The excitation source is used to generate an excitation signal having a first frequency. The capacitor under test is used to receive the excitation signal, and generate a sensing signal. The sampling circuit is used to sample the sensing signal to generate a digital output. The sampling circuit includes a pulse density modulation unit operating at a second frequency to generate the digital output, wherein the second frequency is higher than the first frequency. The filter is coupled to the pulse density modulation unit, and arranged to filter the digital output.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully