Glossary

V

Vertical dot pitch

See Dot pitch.

Vertical scanning frequency

Expressed in Hz, this is the number of fields written to the screen every second in interlaced mode. In non-interlaced mode vertical scanning frequency is the number of frames (complete pictures) written to the screen every second (also known as refresh rate).

Vertical sync pulses

A train of square shaped waveforms that define the start of a new frame.

VESA

Video Electronic Standards Association, a consortium of manufacturers formed to establish and maintain industry-wide standards for video cards and monitors. VESA was instrumental in the introduction of the Super VGA and Extended VGA video graphics standards (see Video graphics adapters) with a refresh rate of 70 Hz, minimizing flicker and helping to reduce operator eyes fatigue and stress.

Video dot rate

See Dot rate.

Video graphics adapters

A card equipped with a character or graphic generator and video memory, which maps to the screen. A microprocessor scans video memory and translates bit information from the computer into displayable video signals for the monitor. These cards comply with various standards that determine the nature and quality of the display.

VGA (Video Graphics Array), introduced in 1987, was the first analog card. It offered still higher resolution than EGA: 640 X 480 pixels for graphics and 720 x 400 pixels for text, and a color palette of 256 colors. VGA could also emulate EGA and CGA.

Super VGA, devised by VESA in 1989, offers a resolution of 800 x 600 pixels.

Extended VGA, introduced by VESA in 1991, offers a top resolution of 1024 x 768 pixels (non-interlaced) and a refresh rate slightly higher than IBM's XGA 8514A.

High-end, graphics adapters, introduced over the last three years for professional workstations, offer top

file:///D/EDFU/crt_19/edoc/english/GLOSSARY/GLOSSARY.HTM (17 of 18) [5/26/2003 5:14:00 PM]

Page 45
Image 45
Philips 109E5 user manual Vertical dot pitch, Vertical scanning frequency, Vertical sync pulses, Video dot rate

109E5 specifications

The Philips 109E5 is a versatile and reliable monitor that appeals to both casual users and professionals looking for an excellent visual experience. This 19-inch display features an array of technologies that bolster its performance, ensuring vivid imagery and comfortable viewing throughout long work sessions.

At the heart of the Philips 109E5 is a VA panel that delivers a resolution of 1280x1024 pixels. This aspect ratio is particularly favored for its compatibility with various applications, making it an optimal choice for multitasking, computer programming, or graphic design. The monitor showcases impressive color reproduction, with a 16.7 million color palette for detailed and vibrant images. Coupled with a 3000:1 contrast ratio, the display achieves deep blacks and bright whites, enhancing the sense of depth in visuals.

One of the standout features of the Philips 109E5 is its flicker-free technology. This innovation reduces eye strain by minimizing flickering at all brightness levels, making it ideal for long hours of use. Additionally, the monitor incorporates LowBlue mode, which lowers harmful shortwave blue light emissions, further protecting users’ eyes during extended viewing sessions.

From a connectivity standpoint, the Philips 109E5 is well-equipped with multiple input options, including VGA and DVI-D ports. This flexibility allows users to connect various devices, whether it be a desktop computer, laptop, or even gaming consoles, ensuring compatibility with a wide range of setups.

The monitor also boasts SmartContrast technology, which dynamically adjusts the contrast based on the content displayed on the screen. This feature enhances the experience by optimizing the display for different tasks, be it watching movies, browsing the web, or editing photos.

Ergonomics are also thoughtfully addressed in the design of the Philips 109E5. The monitor is equipped with a flexible stand that allows for height adjustment and tilt functionalities, promoting a comfortable viewing angle that reduces neck and back strain.

In conclusion, the Philips 109E5 serves as a robust option for anyone in need of a dependable monitor. With its rich color performance, eye-care features, and versatile connectivity options, it stands out as an exceptional choice for both work and play, catering to the needs of various users.