Use of hand motion for control of digital television receiver

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Prípona .pdf	Typ diplomová práca	Stiahnuté 0 x
Veľkosť 2,5 MB	Jazyk anglický	ID projektu 12354
Posledná úprava 18.10.2019	Zobrazené 929 x	Autor: -
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Univerzita:Žilinská univerzita v Žiline
Fakulta:Elektrotechnická fakulta
Kategória:Technika » Siete a komunikácia
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Študijný program:-
Ročník:5. ročník
Formát:PDF dokument (.pdf)
Rozsah A4:131 strán

Popis:

Digitalization of television broadcasting brings new possibilities for TV receiver usage. However, new features of the TV receiver also increase the complexity of its control. Results of research conducted in Great Britain show that the majority of viewers perceive the systems of digital and interactive television being too complex and difficult to use.

The objective of this work is to propose a new concept of TV receiver control that will be suitable for emerging interactive television, but will preserve the easiness-to-use comparable to analogue receivers. The target was achieved by augmenting the traditional remote control to be able to measure and analyse its motion. The measurement of motion is realized by an embedded accelerometer. The advantage of employing an accelerometer is simpler processing of the collected data compared e.g. to image processing (if the motion data were obtained from a system of cameras).

Kľúčové slová:

digitalization

television broadcasting

digital television receiver

computer interaction

controller

complexity

accelerometer

Obsah:

1 Introduction -23-
1.1 Objectives of the Work -24-
1.2 Sequence of Steps -25-
1.3 Structure of the Paper -27-
2 Digital and Interactive Television Receiver -28-
2.1 Digital Transmission of Television Signal -28-
2.1.1 Digital Video Broadcasting (DVB) -31-
2.1.2 Integrated Services Digital Broadcasting (ISDB) -32-
2.1.3 Advanced Television Systems Committee (ATSC) -32-
2.2 Interactive Television Platforms -33-
2.2.1 Multimedia and Hypermedia Expert Group (MHEG) -35-
2.2.2 Multimedia Home Platform (MHP) -35-
2.2.3 Open Cable Application Platform (OCAP) -37-
2.2.4 DTV Application Software Environment (DASE) -37-
2.2.5 Globally Executable MHP (GEM) -38-
2.2.6 Advanced Common Application Platform (ACAP) -38-
3 Interactive Television Viewer Experience -40-
3.1 Interactive Television is Perceived Being Hard to Use -40-
3.2 Interactive Television Compared to Personal Computer -41-
3.3 Issues that Make the Interactive Television Difficult to Use -42-
4 Proposed Concept of Interactive TV Control -43-
4.1 Requirements and Constraints -44-
4.2 Proposed Motion Control -45-
4.3 Hand Motion Tracking -45-
4.4 Thesis to be Examined and Clarified -47-
4.5 Comparison of Motion Control and Computer Mouse -48-
4.6 Opinion Poll about Motion Controlled Television -51-
4.6.1 Conducting the Study -51-
4.6.2 Results -52-
5 Motion Control Prototype Hardware -55-
5.1 Accelerometer Theoretically -55-
5.2 Available Accelerometers -58-
5.3 General Requirements -60-
5.4 ADXL202, ADXL210, ADXL213 Dual Axis Accelerometers -61-
5.5 Power Supply -63-
5.6 Four ADXL Accelerometers Evaluation Board -64-
6 Embedded Software -67-
6.1 Development Tools -67-
6.2 Features -67-
6.3 State Diagram -67-
6.4 Communication Protocol -68-
6.5 Device Control -69-
7 Motion Data Processing Mathematics -70-
7.1 Samples Obtained from the Motion Control -70-
7.2 Numerical Differentiation of Acceleration -71-
7.3 Numerical Integration -71-
7.4 Velocity -76-
7.5 Displacement -76-
7.6 Tilt -77-
8 Data Processing and Analysis Software -80-
8.1 Development Tools and Used Libraries -80-
8.2 Accelerometer Terminal -80-
8.3 Saving the Captured Motion Data -81-
8.4 Displaying the Motion Data -81-
9 Motion Human-Computer Interaction Java API -83-
9.1 Requirements -83-
9.2 Design -83-
9.3 Implementation -86-
9.4 Sample Usage of the MHCI API -86-
10 „TVFace“ Visual Component Toolkit for Digital Television Receivers -88-
10.1 Requirements -88-
10.2 List of the Visual Components -89-
10.3 Structure of the Toolkit -90-
10.4 Sample Application -91-
11 EPG Controlled by Motion -93-
11.1 The Intentions with the MEPG -93-
11.2 The Implemented MEPG -93-
11.3 Usability Test Application -95-
11.4 Playing Breakout -97-
12 Analysis of Measured Data -99-
12.1 Accuracy of the Device -99-
12.2 Basic Motions -100-
12.2.1 Translation Right -100-
12.2.2 Translation Left -103-
12.2.3 Translation Up -104-
12.2.4 Translation Down -108-
12.3 Tilt -110-
12.4 Subtracting Gravitation -111-
12.5 Free Fall Detection -112-
12.6 Usability Research -114-
12.6.1 Procedure -114-
12.6.2 Results -114-
12.7 Recommendations for Motion Control Design -118-
13 Conclusion -119-

Zdroje:

Štefl D.: MHP Application Manager Design and Implementation for PC, Diploma thesis, University of West Bohemia, Faculty of Electrical Engineering, Pilsen, May 2001
Štefl D.: Introduction to DVB-MHP Application Development, Electrotechnics and Informatics 2002, October 2002, ISBN 80-7082-904-4
Štefl D.: Využití pohybu a gest ruky pro ovládání televizního přijímače, paper for doctoral state exam, University of West Bohemia, Faculty of Electrical Engineering, Pilsen, August 2003
Štefl D.: Vývoj aplikací pro platformu MHP, EurOpen 2003, September 2003, ISBN 80-86583-04-X
Štefl D.: Interaktivní digitální televize, Chip, Volume 5/05, May 2005
Štefl D.: Hůlka Harryho Pottera, Chip, Volume 9/05, September 2005
Štefl D.: Televize pro mobily, Chip, Volume 10/05, October 2005
Štefl D.: Tilting the Remote, DVB-Scene, Issue 20, to be published November 2006
Štefl D., Tetour J.: Aktualizace softwaru přijímačů DVB-T, Sdělovací technika, to be published January 2007
Štefl D.: Kouzelnická hůlka Harryho Pottera aneb dálkové ovládání iTV, Sdělovací technika, to be published February 2007

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