Publicação
D-Lecture: controlo de projetores e apresentações através de um Android Smartphone
| Resumo: | In modern days, whenever there is a need to make a presentation using a video projector, it is frequently necessary the use of auxiliary equipment that will serve as image projection source, for instance, a laptop or a Smartphone. Despite the existence of various brands, which present multiple models of video projectors capable of realizing more complex tasks (on a technology level), a lot of them possess a main disadvantage of being highly expensive. Furthermore, there are various locations where presentations are made, namely schools and companies, which possess obsolete image projection equipment. Therefore, it does not make sense to substitute all of the old equipment for new generation equipment, just to give support to some new functions, which is why in most cases it is not justified the investment needed. To minimize the associated cost to support these new functions on old equipment, this current work aims to implement a low-cost system, capable of adding those new functions to the equipment, with said system being constituted by both an embedded system and an Android mobile application. Using this system it is possible to use the mobile application to control the video projector, manipulating in a simple and interactive way how presentations are made. For the supported functions, the most important are: advancing and going backwards, changing to a new file for presentation, as well as the possibility to draw and even the use of a virtual laser pointer. Taking the embedded system into consideration, it will be connected to the video projector using a HDMI plug, thereby serving as an image source. Thus, the system can receive commands sent by the Smartphone using Wi-Fi connection to control the desired presentation, being said presentation provided by a repository such as DropBox, Google Drive or OneDrive. |
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| Autores principais: | Mendes, Bruno Emanuel da Silva Dias |
| Assunto: | Embedded systems Low power cost Presentations Web programming Sistemas embebidos Baixo consumo de energia Android Smartphone Apresentações Programação Web Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática |
| Ano: | 2016 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | português |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | In modern days, whenever there is a need to make a presentation using a video projector, it is frequently necessary the use of auxiliary equipment that will serve as image projection source, for instance, a laptop or a Smartphone. Despite the existence of various brands, which present multiple models of video projectors capable of realizing more complex tasks (on a technology level), a lot of them possess a main disadvantage of being highly expensive. Furthermore, there are various locations where presentations are made, namely schools and companies, which possess obsolete image projection equipment. Therefore, it does not make sense to substitute all of the old equipment for new generation equipment, just to give support to some new functions, which is why in most cases it is not justified the investment needed. To minimize the associated cost to support these new functions on old equipment, this current work aims to implement a low-cost system, capable of adding those new functions to the equipment, with said system being constituted by both an embedded system and an Android mobile application. Using this system it is possible to use the mobile application to control the video projector, manipulating in a simple and interactive way how presentations are made. For the supported functions, the most important are: advancing and going backwards, changing to a new file for presentation, as well as the possibility to draw and even the use of a virtual laser pointer. Taking the embedded system into consideration, it will be connected to the video projector using a HDMI plug, thereby serving as an image source. Thus, the system can receive commands sent by the Smartphone using Wi-Fi connection to control the desired presentation, being said presentation provided by a repository such as DropBox, Google Drive or OneDrive. |
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