Glossary

●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 providing 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 its ports.

Device

A logical or physical entity that performs a function. The actual entity described depends on the context of the reference. At the lowest level, device may refer to a single hardware component, as in a memory device. At a higher level, it may refer to a collection of hardware components that perform a particular function, such as a Universal Serial Bus interface device. At an even higher level, device may refer to the function performed by an entity attached to the Universal Serial Bus; for example, a data/FAX modem device. Devices may be physical, electrical, addressable, and logical.

file:///E/LCD%20Monitor%20OEM/Philips/M1-project/190C1/190C1-EDFU/5B.0V101.001/CD-Contents/lcd/manual/ENGLISH/190C1/glossary/glossary.htm 第 9 頁 / 共 11 [98-05-05 14:34]

Page 110 Page 112
Page 111
Image 111
Philips 190C1, 190CI user manual Hub
Page 110 Page 112

190CI, 190C1 specifications

The Philips 190C1 and 190CI monitors are part of a series that emphasizes robust design, energy efficiency, and user-friendly features. Aimed at home and business users alike, these monitors are designed to cater to a variety of computing needs, from everyday office tasks to multimedia applications.

One of the main features of the Philips 190C1 and 190CI models is their 19-inch LCD display. This size strikes a balance between space-saving design and ample screen real estate for multitasking. The monitors offer a native resolution of 1280 x 1024 pixels, allowing for crisp text and vibrant images. The 5ms response time ensures smooth visuals, which is particularly beneficial for watching videos or playing casual games.

Both models leverage Philips’ innovative technologies to enhance image quality. The integrated SmartContrast feature automatically adjusts the contrast ratios, providing deeper blacks and brighter whites for a more dynamic visual experience. This technology effectively optimizes the monitor’s performance across various applications, enhancing both productivity and entertainment.

Energy efficiency is a significant characteristic of the Philips 190C1 and 190CI. The monitors are equipped with an Eco-mode feature that reduces power consumption without compromising performance. With Energy Star certification, these monitors reflect Philips' commitment to environmentally friendly practices, making them a sensible choice for eco-conscious consumers.

Connectivity options are versatile, as both models include a VGA input, making them compatible with a variety of devices such as desktop computers and laptops. This simplicity in connection enhances their usability across different setups, ensuring a seamless experience for users.

Ergonomics is also a focal point in the design of these monitors. The tilt function allows users to adjust the screen angle for improved viewing comfort, catering to various working environments and individual preferences. This feature is especially useful for long hours of use, helping to reduce strain on the neck and eyes.

In conclusion, the Philips 190C1 and 190CI monitors are ideal for users seeking a reliable, efficient, and comfortable display solution. With their combination of functional design, impressive image quality, and eco-friendly features, these monitors stand out as solid choices for both professional and personal use. Whether for work or play, they provide an excellent visual experience that meets the demands of today's digital landscape.
Top Page Image Contents