Specifications

Crestron Programming Design Kit
2
Doc. 5277J | crestron.com
Sound
The Vision Tools Pro-e Sound Manager enables the user to add WAV files to projects for sound-enabled touch
screens and keypads, such as most TPS panels, and CNXB2/ B4/B6/B8/B12 button panels.
Background Images
VisionTools Pro-e supports BMP, PCX, DIB, and JPEG formats. Images can be modified to fit the page. The Tile
option fills the space on the page with multiple copies of the image (This feature works best with smaller images).
The Stretch to Fit option stretches out the image to fill the entire page.
Bit Depth and File Size
A bit depth refers to the number of memory bits used to store color data for each pixel in a raster image. A touch
screens raster image consists of a rectangular grid of picture elements (pixels). Each pixel uses the same amount
of memory to store its color data. The amount of memory is called the bit depth of the image.
Greater bit depths are required to represent finer gradations of color. Increasing bit depth necessarily increases file
size. A black and white drawing requires only one bit per pixel to store all the available color information. Using a
32-bit per pixel bit depth for a black and white image increases the file size 32 times without adding anything to
the black and white image quality.
In an 8-bit per pixel system, the associated 8-bits of video memory for every screen pixel contain a value referring
to a location in an 8-bit color table. In this way any one of the specific 256 color table locations is assigned to a
pixel.
A 16-bit highcolor system is considered sufficient to provide life-like colors. It is encoded using 5-bits to represent
red, 5-bits to represent blue and (since the human eye is more sensitive to the color green) 6-bits to represent 64
levels of green. These can therefore be combined to provide 65,536 mixed colors (32 x 32 x 64 = 65,536).
In a 24-bit graphics display, the video memory allocates 24 bits for each pixel on the screen enabling each pixel to
take on any one of a possible 16.7 million colors. Each 24-bit value is composed of 8-bits for red, 8-bits for green
and 8-bits for blue. These triplets of 8-bit values are also referred to as the red, green and blue color planes. A
24-bit image is actually composed of three component images, which combine to create the truecolor picture. The
reason this is called truecolor is that this is near the maximum number of colors the human eye is able to detect.
Truecolor images are sometimes represented by a 32-bit value. The extra 8-bits do not enhance the precision
of the color representation but act as an alpha channel that represents pixel translucence. The 32-bit truecolor
has become popular on the computer desktop to provide effects such as translucent windows, fading menus and
shadows.
In graphics intensive applications such as touch screens, raising or lowering the color depth of the displayed
graphics can achieve a balance of performance and quality. Lower color depths do not require as much frame
buffer memory or display bandwidth, allowing them to be generated and displayed more quickly. Increasing color
depth results in higher color quality at the expense of display speed and responsiveness. By using mostly 8-bit or
16-bit graphics and holding the 32-bit graphics to a minimum (e.g., for a family photo, etc.), a sophisticated project
can be created that fits in the memory space provided and have the touch screen remain very responsive.