Hot spots are areas of a screen’s surface that reflect projected light more than surrounding areas on the screen. They can result in an uneven picture that seems too harsh in some areas of the image, and are most noticeable when viewing the image from the periphery of the screen. Hot spots can be prevented by proper screen selection, brightness
High Definition Television, format that offers high resolution with respect to the standards NTSC, PAL and SECAM. Usually the current formats of HDTV with a resolution between 655 and 1125 lines, with a 16:9 aspect and a bandwidth of 30 to 50 MHz.
HDTV Ready (Ready for HDTV):
Term used to describe a TV that can display formats for digital high-definition TV
An acronym for High Definition Multimedia Interface. Standard equipment developed to interconnected power of digital audio and video via a single cable, which passed both the control data such as audio and video.
Similar to DVI (but use smaller connectors), the multi-pin HDMI interface transfers uncompressed digital video with HDCP copy protection and
The codification of HDCP is used with high-resolution signals with DVI and HDMI connections and recordings of D-VHS D-Theater to prevent unauthorized copying of material with intellectual property.
HDCP (High Bandwidth Digital Content Protection) is a copy protection system for the new DVI and HDMI digital video interfaces. Smooth functioning of the DVI and
"High Definition Multimedia Interface," by its acronym, has emerged as the standard for connecting components of High Definition. In the new projectors for home theater digital video input is handled with this new format, which in terms of video is equal to DVI-D, only this cable / connector also handles the Digital Audio.
The gain of a projection screen is the ratio of it reflectivity compared to a perfect matte white (lambertian diffuser) standard (magnesium carbonate or sulfate are typical examples).
The majority of screens have a gain between unity (1) and 1.3 which are suitable for most applications.
Screen gain is the measure of a screen’s ability to reflect