EDNE June 2012 - (Page 38)

Your question: Why full bandwidth up to 1 mV/div? Our answer: For high signal fidelity and measurement accuracy on fast, low-amplitude signals. The R&S®RTO oscilloscopes offer high vertical input sensitivity of up to 1 mV/div. They always operate at high measurement accuracy because the full bandwidth of the oscilloscope can be used at even the lowest sensitivity levels. Furthermore, the R&S®RTO oscilloscopes do not use software-based zooming. They show the signal‘s real test points at all sensitivity levels. For more information, visit: www.scope-of-the-art.com/ad/faq-bw Figure 2 Cypress’ SLIM technology uses a proprietary pattern that allows designers to route both the X and the Y sensor grid lines on the same surface in one layer with no jumpers or vias. Even with the decrease in prices for multitouch touchscreens, they are still about 10 times more expensive than resistive screens, which have a large installed base. For applications in which cost is dominant yet that still require some form of multitouch, Freescale offers the Xtrinsic CRTouch, which enables the retrofitting of resistive touchscreens to recognize slides, two-finger pinches for zooming in and out, and multifinger rotations on standard resistive touchscreens. The chip uses proprietary algorithms and dedicated analog hardware, as well as on-chip hAPTiCs 101 By Eric Siegel, Texas Instruments Let’s face it: we live in a society that responds to visual stimuli, and screens are everywhere. As demand for more and more features has increased, we’ve seen common viewing screens become portals of interaction, now equipped with touch detection. Although touch capability comes in many flavors, including resistive, capacitive, and optical, the next evolution is allowing these touchscreens to touch back, which is exactly what haptics allows them to do. haptics is the ability to deliver vibrational, or tactile, feedback through a device or screen (figure A). haptic feedback also comes in many flavors, with three main implementations: ErMs (eccentric rotating masses), LrAs (linear resonant actuators), and piezoelectric actuators. ErMs and LrAs are inertial-based actuators that involve moving a mass in a linear motion to create the detected vibration force. ErMs use an off-center weight, and LrAs use a spring-oscillated mass. ErMs offer a cost-effective approach for delivering basic haptic effects but consume a significant amount of power and take 50 to 80 msec to deliver an effect, which is slower than their counterparts (reference A). LrAs offer great power savings (a) (b) (c) Figure A Haptics displays rely on actuators to give a touchscreen the ability to touch back. The main types of actuators in haptics are eccentric rotating masses (a), linear resonant actuators (b), and piezoelectric actuators (c). 38 EDN EUROPE | June 2012 www.edn-europe.com http://www.scope-of-the-art.com/ad/faq-bw http://www.edn-europe.com

Table of Contents for the Digital Edition of EDNE June 2012

Cover
Agilent Technologies
Contents
International Rectifier
RS Components
Masthead
International Rectifier
Comment
Pulse
Analog Devices
Digi-Key
Farnell
NXP
Test & Measurement
Silicon Labs
Digi-Key
Test-driven development for embedded C: why debug?
Digi-Key
Baker’s best
Cover story
Rohde & Schwarz
Rohde & Schwarz
Rohde & Schwarz
Rohde & Schwarz
Rohde & Schwarz
Pico-projector design uses color LEDs
Digital isolation in smart energy metering applications
Mechatronics in design
Teardown
Design Idea
Product Roundup
Tales from the cube

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