CIE-SEP09-PG16-17:Layout 1 07/09/2009 13:29 Page 16
Automotive Electronics
I want my touchscreen...
with gestures
W
ith the near standardisation panel to be calibrated regularly for
of touchscreens in the alignment with the LCD.
mobile phone segment, n Capacitive touchscreens, with the
many people are waiting impatiently latest technology being projected
for the technology to make its way capacitive touchscreen, compare to
into the automotive market. Of resistive touchscreens by having a
course, some might argue that much better clarity (90% or more), as
As consumers wait impatiently for touchcreen
touchscreens are already available in well as higher accuracy across the
cars today, however, what is really panel without the need for
technology to make it into their cars Hassane
meant, is a touchscreen with gestures. recalibration. Where projected
El-Khoury considers the challenges ahead for
Drivers expect to get in the car today, capacitive touchscreens truly add
flick a menu to scroll through their value, is their ability to detect
manufacturers list of mp3, get on the road, and with
multiple touch points
simple gestures such as zoom in and simultaneously.
out, pan left, and rotate, be able to Comparing today’s automotive
navigate through the map, without HMI concepts based on resistive
requiring the complexity of today’s touchscreens to capacitive
infotainment menu structure. touchscreens with gesture
Automotive Human Machine recognition, we can identify a few
Interface (HMI) presents a new set of areas where the driver’s attention to
challenges than what is seen in the the road has indeed improved with
consumer segment. Challenges the additional feature. Gesture
mainly related to safety while recognition on capacitive
driving. With added functionality, touchscreens is not only a new
one has to wonder about its effect on means of input, but is indeed another
the driver’s primary responsibility: level of input to the system. With
eyes on the road. Is this simply a capacitive touchscreens, one can still
fancy feature implemented in navigate through menu structures
vehicles to get more out of the with a single click, slide their finger
driving experience? Although true, to increase audio volume, or change
this functionality also provides safety the HVAC fan speed; however, what
while driving. The less time the driver is really important is how easy it
spends navigating through menus to would be to control standard
enter a destination, the more time functions such as navigation, mainly
he spends focused on the road. necessary while driving. The user can
First, let’s differentiate between simply zoom out with a simple
both types of touchscreens making gesture, without necessarily looking
their way into the automotive at the screen. Gestures can be
infotainment arena: introduced on any area of the screen,
and therefore do not require the
n Resistive touchscreen today is driver to position his fingers in a
the dominant technology in certain location prior to performing
automotive infotainment. They the gesture. Figure 1 shows a
are the lowest cost touchscreen representation of such a gesture on
technology, and are used across the navigation screen.
many application segments This also applies to sliding the map
from automotive, to left or right for better view, with a
industrial, and consumer. Due simple finger gesture without menu
to their mechanical like navigation, hence adding
implementation, pressure functionality at your fingertips. It will
must be applied on the panel gain traction and become a standard
to detect a touch. Two soon after its introduction.
properties of resistive As any new emerging technology,
touchscreens cause it to lose customer acceptance is a hot item. In
traction in the market, mainly the infotainment world of
automotive: clarity, generally automotive, customers in general are
between 70% and 80%, and very open to technologies which are
secondly the need for the touch inline with what they use everyday.
TTeestest & Measurement & Measurement
equipmentequipment
THE
APPROACH
ELECTRONICS
FIRST WE SOURCE THE PRODUCTS - We have over 1,000 types of test and measurement equipment from the world’s best
www.aspen-electronics.com
suppliers - Digital / Analogue Oscilloscopes, RF Network Analysers, Spectrum Analysers, Amplifiers and Power Measurement
equipment. We also offer repair and calibration services, specialising in RF Power Calibration.
AND THEN WE PROVIDE THE SERVICE TO MATCH - Our specialist sales teams have a wealth of experience. We use a
‘consultative’ sales approach, where the exchange of technical knowledge is key to providing our customers with the right products.
MICROWAVES
www.admiral-microwaves.co.uk
WWee are confident thae are confident that we can supply any t we can supply any item otem of TeTest & Measurement equst & Measurement equipmenpment
16 September 2009 Components in Electronics www.cieonline.co.uk
Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44