Philips 150X user manual LCD Liquid Crystal Display

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Glossary

L

LCD Liquid Crystal Display

An alphanumeric display using the unique properties of liquid crystal to form characters. The latest flat-panel displays comprise a matrix of hundreds or thousands of individual LCD cells that generate text and colorful graphics on a screen. They consume little power though they do require external lighting to make them legible to the user.

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U

USB or Universal Serial Bus

A smart plug for PC peripherals. USB automatically determines resources (like driver software and bus bandwidth) required by peripherals. USB makes necessary resources available without user intervention.

USB eliminates "case angst" -- the fear of removing the computer case to install add-on peripherals. And USB also eliminates adjustment of complicated IRQ settings when installing new peripherals.

USB does away with "port gridlock." Without USB, PCs are normally limited to one printer, two Com port devices (usually a mouse and modem), one Enhanced Parallel Port add-on (scanner or video camera, for example) and a joystick. More and more peripherals for multimedia computers arrive on the market every day. With USB, up to 127 devices can run simultaneously on a computer.

USB permits "hot plug-in." There's no need to shut down, plug in, reboot and run set-up to install peripherals. And no need to go through the reverse process to unplug a device.

In short, USB transforms today's "Plug-and-Pray" into true Plug-and-Play! Hub

A Universal Serial Bus device that provides additional connections to the Universal Serial Bus.

Hubs are a key element in the plug-and-play architecture of USB. The Figure shows a typical hub. Hubs serve to simplify USB connectivity from the user's perspective and provide robustness at low cost and complexity.

Hubs are wiring concentrators and enable the multiple attachment characteristics of USB. Attachment points are referred to as ports. Each hub converts a single attachment point into multiple attachment points. The architecture supports concatenation of multiple hubs.

The upstream port of a hub connects the hub towards the host. Each of the other downstream ports of a hub allows connection to another hub or function. Hubs can detect, attach and detach at each downstream port and enable the distribution of power to downstream devices. Each downstream port can be individually enabled and configured at either full or low speed. The hub isolates low speed ports from full speed signaling.

A hub consists of two portions: the Hub Controller and Hub Repeater. The repeater is a protocol-controlled switch between the upstream port and downstream ports. It also has hardware support for reset and suspend/resume signaling. The controller provides the interface registers to allow communication to/from the host. Hub specific status and control commands permit the host to configure a hub and to monitor and control

file:///D/Philips LCD/english/150X/GLOSSARY/GLOSSARY.HTM (3 of 5) [4/18/2001 9:12:41 AM]

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Contents Page Installation Locations Safety and Troubleshooting InformationSafety precautions and maintenance Correct handling of the monitor Return to TOP Notational Descriptions About This GuideOther Documents You May Need Return to TOP Product Information Product FeaturesTechnical Specifications Audio Automatic Power Saving Resolution & Preset ModesSignal Pin Assignment Physical SpecificationsDVI-I Pin Assignment Views No Video Input Entering Sleep Mode Page Installing your LCD Monitor Rear View Side View Return to TOP Optimizing Performance Description of the On Screen Display On-Screen DisplayOSD Tree Analog signal inputPage Digital signal input Return to TOP North America Canada USA Customer Care & WarrantyBNC connection GlossarySUB USB LCD Liquid Crystal Display Vertical refresh rate Return to TOP Download instructions Download and PrintPrinting instructions Installing FPadjust ProgramGeneral FAQs FAQs Frequently Asked QuestionsFAQs Frequently Asked Questions Page Screen Adjustments Compatibility with other Peripherals LCD Panel Technology FAQs Frequently Asked Questions Ergonomics, Ecology, and Safety Standards Return to TOP Common Problems TroubleshootingImaging Problems Return to TOP Regulatory Information TCO Development Unit Philips Federal Communications Commission FCC Notice U.S. Only EN 55022 Compliance Czech Republic Only Varning Earthed How to connect a plug Information for Users outside the U.S Other Related InformationInformation for Users in the U. S Philips Flat Panel Monitors Pixel Defect Policy Philips Pixel Defect PolicyProximity of Pixel Defects Return to TOP Connecting to Your PC Connecting to Your PC Connecting to Your PC Connecting to Your PC Return to TOP Getting Started Getting StartedBrightness OSD ControlsLanguage Adjust Position Brightness & Contrast Brightness & Contrast Video Noise not available on all monitors OSD Controls Adjust COLORanalog mode OSD Controls OSD Controls OSD Settings OSD Controls Product Information Reset to Factory Settings Monitor, Reset to Factory Settings is your last selection Input Selection not available on all monitors Close Main Controls Page Thank you for purchasing this Philips monitor Your International Philips F1rst Choice WarrantyYour International Guarantee WHO is COVERED? What is COVERED? Limited Warranty Computer MonitorBefore Requesting Service Philips Customer Care Center, P. O. Box 2976, Longview, TX