Novel touchscreen controller enables touchscreens to function seamlessly with noisy battery chargers
February 14, 2011 // Paul Buckley
Cypress Semiconductor Corp., has unveiled a new feature for the company’s TrueTouch touchscreen controllers that enables touchscreens in handsets, cameras, GPS systems and other mobile systems to function seamlessly while connected to noisy chargers. Low-cost, third-party and after-market battery chargers emit large levels of common-mode noise that adversely affects touchscreen performance, often resulting in inaccurate touch readings or phantom touches.
Cypress’s new Charger Armor feature allows TrueTouch touchscreens to operate normally in the presence of AC noise.
The new feature, which is available in Cypress’s CY8CTMA3XX TrueTouch family, solves a common problem that mobile device manufacturers are struggling to overcome. Low cost chargers lack critical noise suppression components, and can generate tens of volts (peak to peak) across the frequency spectrum of 1 Hz to 1 MHz. The voltage spikes can go directly into the touch panel during the presence of touch, impacting touch performance. As such, many of the mobile phone vendors have worked together to create EN 62684 and EN301489, standards which regulate the noise spectrum for battery chargers. While Cypress’s TrueTouch technology alone can suppress noise at the levels of these standards, Charger Armor allows Cypress to go beyond the standards to deliver truly revolutionary charger noise immunity to the market, enabling mobile devices to operate with the lowest-cost chargers.
The Charger Armor feature is available today, and Cypress expects customers to introduce systems with Charger Armor in the first half of 2011.
For more information about the TrueTouch solution visit www.cypress.com/go/TrueTouch
Trinamic's stepper motor package gets you started
August 29, 2014
This month, Trinamic Motion Control is offering you to win one of four TMCM-1043 development kits for its highly integrated, ...
Winged parcel delivery: Google's way
Two-inch Super AMOLED display fits Samsung smartwatch plans
Dutch startup shrinks 60GHz radars, increases precision
Google glass: App measures facial expression
Forget iPhone: 4 megatrends in China’s smartphone market
August 28, 2014
Touch Taiwan, an international touch-panel and optical film exhibition that opened here Wednesday, is exposing some of Asia’s ...
Foldable AMOLED features interactive touch control
Lantronix to fill digital classrooms' printing gap with PAL programme
Circular P-OLED display gives wearable device classic style
- Power Modules: The New Super Power
- Digital Power Management Reduces Energy Costs While Improving System Performance
- Using RF Recording Techniques to Resolve Interference Problems
- How to Protect & Monetize Android Apps
InterviewCEO interview: Tronics' Langlois makes moves in MEMS
Pascal Langlois has been CEO at Tronics for nine months. He discusses plans for the company and directions for the complex and diverse MEMS technology sector.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Trinamic Motion Control is offering you to win one of four TMCM-1043 development kits for its highly integrated, NEMA 17-compatible TMCM-1043 stepDancer stepper motor module.
Offering designers an easy-to-use PC-based GUI that allows one-click modification of motor drive current, micro-stepping and other key parameters, the intuitive kits are custom designed and developed for...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.