... Corporation
EURASIP Journal on Embedded Systems
Volume 2008, Article ID 502768, 2 pages
doi:10.1155/2008/502768
Editorial
Operating System Support for Embedded
Real- Time Applications
Alfons Crespo,
1
Ismael ... embed-
ded operatingsystem must provide.
Embedded systems can be defined as computing systems
with tightly coupled hardware and software that are designed
to p erform a dedicated function. The word embedded ... that these systems are usually an integr al part
of a larger system.
We can find a large variety of applications where embed-
ded systems play an important role, from small stand-alone
systems, ...
... “Dy-
namic integrated scheduling of hard real- time, soft real- time
and non -real- time processes,” in Proceedings of the 24th IEEE
International Real- TimeSystems Symposium (RTSS ’03),pp.
396–407, ... range of real- time capabilities, such as
QoS-enabled network protocols, real- timeoperating system
scheduling mechanisms and policies, and real- time middle-
ware services, across the system domain. ... capabilities of the system
(such as operatingsystem scheduling mechanism and poli-
cies), they are not sufficient for DRE systems as these systems
require integrating a range of real- time capabilities...
... perform all needed processing in real time.
In this paper, an embeddedsystem for multichannel
multigate (MCMG) US echography is described. The system
was conceived and realised as programmable research ... elasticity typical of aging.
4. CONCLUSION
In this paper, an embeddedsystem for real- time digital
processing of US signals has been presented. The system
is capable of transmitting arbitrary waveforms, ... pages
doi:10.1155/2008/418235
Research Article
Embedded System for Real- Time Digital Processing of
Medical Ultrasound Doppler Signals
S. Ricci, A. Dallai, E. Boni, L. Bassi, F. Guidi, A. Cellai, and P. Tortoli
Dipartimento Elettronica...
... model certain class of real- timesystems like a biphase mark protocol
[31].
The Alur-Dill timed automata framework [1] is arguably the best known framework to model a real- time
system, and is the ... parametric safety verification of
real- timesystems in which “correct orderings of events” needed for system correctness are maintained by timing
constraints on the systems behavior. By using EOA, ... parametric safety ver-
ification of the subclass of real- timesystems in which correct orderings of events maintained by timing constraints
on the systems behavior are critical for correctness (for...
... infrastructure and
sentiment model to analyze in real- time public
sentiment on Twitter toward the 2012 U.S.
presidential candidates. Our effort to gauge
political sentiment is based on bringing ... desirable.
Figure 1 shows our system s architecture and its
modules. Next, we introduce our data source and
each individual module.
Figure 1. The system architecture for real- time processing Twitter ... Republic of Korea, 8-14 July 2012.
c
2012 Association for Computational Linguistics
A System for Real- time Twitter Sentiment Analysis of
2012 U.S. Presidential Election Cycle
Hao Wang*, Dogan...
... with system A 1.4 to 2.2 times
quicker than with system B and one subject com-
pleted it with system B one second quicker than
with system A. A statistical hypothesis test showed
that times ... developed several experimen-
tal Japanese spoken dialogue systems, including a
meeting room reservation system.
The architecture of the systems is shown in Fig-
ure 3. The speech recognizer uses ... unclear. On the other hand, responding to
a user utterance in realtime requires understanding
it and updating the belief state in real time; thus,
it is impossible to wait for subsequent inputs...
... systems,
space missions,
consumer electronic devices,
multimedia systems,
smart toys, and
virtual reality.
In many cases, the real- time computer running the application is embedded into the
system ... τ
i
;
r
i,j
denotes the release time of the jth instance of task τ
i
;
G.C. Buttazzo,
, Real- TimeSystems Series 24,
DOI 10.1007/978- - -0 - _ ,
Hard Real- Time Computing Systems: Predictable Scheduling ... queue. Operating systems
that handle different types of tasks may have more than one ready queue.
G.C. Buttazzo,
, Real- TimeSystems Series 24,
DOI 10.1007/978- - -0 - _ ,
Hard Real- Time Computing...
... for
Real- Time Systems
7. Performance
Analysis Techniques
6. Software Design
Approaches
9. Future Visions
on Real- Time
Systems
1. Fundamentals of
Real- Time Systems
3. Real- Time
Operating Systems
4. ... Theoretical limit Embeddedsystems
70 – 82 Questionable Embeddedsystems
83 – 99 Dangerous Embeddedsystems
100 Critical Marginally stressed systems
> 100
Overloaded Stressed systems
A ... considered real - time; it must
simply have response times that are constrained appropriately.
When is a systemreal - time? It can be argued that all practical systems are
ultimately real - time systems. ...
...
processor time.
19.11
Silberschatz, Galvin and Gagne â2005
Operating System Concepts 7
th
Edition, Jan 1, 2005
Implementing Real- Time
Implementing Real- Time
Operating Systems
Operating Systems
■
In ... 1, 2005
Overview of Real- Time Systems
Overview of Real- Time Systems
■
A real- timesystem requires that results be produced within a
specified deadline period.
■
An embeddedsystem is a computing ... Galvin and Gagne â2005
Operating System Concepts 7
th
Edition, Jan 1, 2005
Bus-Oriented System
Bus-Oriented System
Chapter 19: Real- Time Systems
Chapter 19: Real- Time Systems
19.20
Silberschatz,...
... hard real- time systems, it will use the
term real- timesystem to mean embedded, hard real- time system, unless other-
wise noted.
1.1.2.2 The Nature of Time It is typical, in studying real- time systems, ... engineering of real- time systems.
1.3 EXAMPLE REAL- TIMESYSTEMS
Embedded real- timesystems are so pervasive that they are even found in house-
hold appliances and toys. A small sampling of real- time domains ... analysis
of real- time systems. Thus, because real- timesystems engineering is so multi-
disciplinary, it stands out as a highly specialized area.
The design and implementation of real- time systems...
... Admire System. As is shown in Figures
1 and 2, the Admire (ADvanced Multimedia Interactive
Real- time Environment) system [2, 6, 7] is a heterogeneous
wireless network-oriented large-scale multimedia ... surveillance and other video recording systems.
1. Introduction
With the development of multimedia and network tech-
nologies, video conferences and some other streaming
media systems have attracted significant ... original work is properly cited.
The recording and playback system (RPS) in video conference system needs to store mass of media data real- timely. Considering
the security issue, media data should...
... analysis,” ACM SIGOPS
Operating Systems Review, vol. 40, no. 3, pp. 31–37, 2006.
[13] B. Foo and M. van der Schaar, “Distributed classifier chain
optimization for real- time multimedia stream mining ... mining systems
have been recently developed. It has been shown that
distributed stream mining systems transcend the scalability,
reliability, and performance objectives of large-scale, real-
time ... in distributed stream mining
systems. First, real- time stream mining applications must
cope effectively with system overload due to large data
volumes, or limited system resources, while maintain-
ing...
... i.e., the total time to process the image of an eye with 136
ì
82 pixels in this
system is 136
à
s. This is a hardware implementation of an eye state recognition for real
time.
Competing ... Technology,
ICCET'09, 2009, pp 554–559
14. T Hong, H Qin, Q Sun, An improved realtime eye state identification system in
driver drowsiness detection, in IEEE International Conference on Control ... drowsiness warning system based on the fuzzy
logic images analysis. Expert Syst. Appl. 34(2), 1556–1561 (2008)
13. Y Lei, M Yuan, X Song, X Liu, J Ouyang, Recognition of eye states in realtime
video,...