Interactive Touch Interface Technology

Interactive touch interface has been widely used on smart phone, ATM machine, cashier and many more. Here at maxTouch Indonesia , we are focusing on developing and promoting interactive whiteboard and touch screen TV overlay.

Interactive whiteboard or sometimes called electronic whiteboard, has been around for some times in American and European countries for the use of interactive teaching tools and collaborative meeting aids. Because of the expensive price, Interactive whiteboard in Indonesia are currently affordable by expensive international schools and big corporation company. MaxTouch introduces this electronic whiteboard to Indonesia with a competitive prices, so that it will become more accessible and affordable to everyone.

Touch screen overlay or sometime called touch frame, is an economic alternative to add touch interface to your existing monitor or LCD/LED TV. Touch screen TV are very applicable and useful for meeting room, training room, classroom, retail displays, control rooms, exhibitions, conferences, museums, and etc. Our touch screen overlay now support multi-touch up to 4 touch points.

There are several different technologies used to implement touch interface. Different technologies are suitable for different application. Some of them are mature technologies, which has already been going through a lot of researches and developments. There are also new technologies which are still under developments and trials. For interactive whiteboard and touch screen overlay, the three most mature technologies used are resistive touch, electromagnetic signal and infrared grid.

Resistive - Resistive interactive whiteboards are made with resilient front sheet and hard backboard. The back of the front sheet and the front of the backboard are coated with resistive materials. Under normal condition, these resistive materials are separated by tiny air gap. When contact is made to the surface of the front sheet, the gap is closed, registering the precise location of the touch. This analog signal is converted to a serial data stream and then sent to the computer for further processing. Resistive technology allows one to use finger, stylus, or any other pointing device to operate. The biggest problem with resistive IWB is when the surface is damage, the board becomes useless.

Electromagnetic - The basic mechanics of an electromagnetic interactive whiteboard involve two components: the digitized grid and the digitizing pen.

The digitizing pen contains a transponder that emits an electronic signal. When the pen comes in contact with the surface of the digitized grid, the signal makes an electric contact that is communicated to the computer. This signal tells the computer the location of the pen on the surface of the digitized grid in an 'X' and a 'Y' coordinates. The precision of input is controlled by the dispersion or width of the signal emitted from the digitizing pen, and the density of the lines in the underlying digitized grid.

Infrared - Infrared interactive whiteboard is based on IR Cell LED Optical technology which uses a combination of IR LEDs and photo transistors that are aligned in pairs around the active surface, hidden behind the bezel of the frame. The bezel shields the parts from the operation environment while allowing the IR beams to pass through. These pairs of LEDs and photo transistors cast a grid over the surface. When the surface is touched, the beam of infrared light between the LEDs and the photo transistors is interrupted at the point of touch. The touch point is converted into an 'X' and a 'Y' coordinates which the computer then converts into a mouse position.

MaxTouch Board uses infrared technology because of it's high durability and high touch point accuracy.