Research Studies

Equipment Studies

Webcam

• Webcams are video capturing devices connected to computers or computer networks, often using USB or, if they connect to networks, ethernet or Wi-Fi. They are well-known for their low manufacturing costs and flexible applications.History:
  Started in 1991, the first such camera, called the CoffeeCam, was pointed at the Trojan room coffee pot in the computer science department of Cambridge University. The camera was finally switched off on August 22, 2001.
  The oldest webcam, as the technology came to be known, still operating is FogCam at San Francisco State University, which has been running continuously since 1994. 

• Uses of Webcam:
  · Capture Image
  · Record Video
  · Video Conferencing
  · Video Security
  · Input Device
  · Sensor
  · Motion Detect
  · Webcast
  · Live Streaming
  · Video Greeting Cards

Video Projector

• A video projector takes a video signal and projects the corresponding image on a projection screen using a lens system. All video projectors use a very bright light to project the image, and most modern ones can correct any curves, blurriness, and other inconsistencies through manual settings. Video projectors are widely used for conference room presentations, classroom training, home theatre and live events applications. Projectors are widely used in many schools and other education providers to project onto an interactive white board to interactively teach pupils.
• A video projector, also known as a Digital Projector, may be built into a cabinet with a rear-projection screen (rear-projection TV, or RPTV) to form a single unified display device, now popular for “home theater” applications.

 Touch Sensor

•   A touch screen sensor is a clear glass panel with a touch responsive surface. The touch sensor/panel is placed over a display screen so that the responsive area of the panel covers the viewable area of the video screen. There are several different touch sensor technologies on the market today, each using a different method to detect touch input. The sensor generally has an electrical current or signal going through it and touching the screen can cause a voltage or signal change. This change is used to determine the location of the touch to the screen. 
• How Does a Touchscreen Work? 
  A basic touchscreen has three main components:
  1         Touch sensor;
  2         Controller; 
  3         Software driver.
  The touchscreen is an input device, so it needs to be combined with a display and a PC or other device to make a complete touch input system.
  
  
  Touchscreen Technology
  •          Resistive touchscreen
  •          Capacitive touchscreen
  •          Infrared  touchscreen
  •          Surface acoustic wave (SAW) touchscreen
  •          Strain gauge touchscreen
  •          Optical imaging touchscreen
  •          Dispersive signal technology touchscreen