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TOP > Products > Glossary
- AAPM TG18
- Stands for American Association of Physicists in Medicine Task Group 18. It establishes guidelines on evaluation of electronic display devices.
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- Active matrix
- An LCD structure in which each pixel is independently controlled
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- Backlight
- Light source installed behind the LCD panel module. Typically cold cathode fluorescent lamps are used.
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- Contrast (contrast ratio)
- The ratio of the darkest and brightest luminance levels a display can reproduce
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- DVI
- Stands for Digital Visual Interface. A digital interface standard created by
the Digital Display Working Group (DDWG).
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- EMI
- Stands for Electromagnetic Interference. The generation of unwanted noise caused by the radiation of electrical and magnetic fields.
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- Gamma
- The relationship between the input video signal to a display and the screen output luminance
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- GSDF
- Stands for Grayscale Standard Display Function created by the DICOM Committee
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- JND
- Stands for Just Noticeable Difference. The smallest recognizable difference by human eyes.
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- Luminance
- The brightness of a surface per unit area without reflection of any ambient light
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- LUT
- Stands for Look-up Table. It performs gamma correction and converts the grayscale data input from a graphics card into luminance value.
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- OSD
- Stands for On-screen Display. A function that displays operational status, screen settings, and adjustment status on the screen.
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- PCI Express
- A high-speed, serial connection interface between a graphics card and a computer
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- Power management
- A function to reduce power consumption of a computer when not in use
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- Response time
- The amount of time it takes for luminance to reach the target when a display is turned on or off
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- Viewing angle
- The maximum angle from which a certain contrast ratio or above can be measured
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- VESA
- Stands for Video Electronics Standards Association. An American organization that sets standards for video cards and displays.
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