Glossary

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.

Downstream

file:///E/200CW8/200CW8 EDFU-07-08-16/lcd/manual/English/200CW8/glossary/glossary.htm（第 9／10 页）2007-8-16 15:17:01

Page 106 Page 108
Page 107
Image 107
Philips 200CW8, HWC8200T user manual Device
Page 106 Page 108

HWC8200T, 200CW8 specifications

The Philips 200CW8 and HWC8200T are innovative display solutions that reflect the company’s commitment to delivering high-quality visual experiences. The 200CW8 is a cutting-edge monitor designed for professionals who demand precise color reproduction and clarity. It features a 20-inch LCD screen with a resolution of 1600 x 900 pixels, providing sharp images and vibrant colors. The monitor is equipped with a wide viewing angle, allowing users to enjoy consistent colors and brightness from various positions.

One of the standout features of the Philips 200CW8 is its advanced IPS technology, which ensures accurate color representation and superb viewing angles. With a 1000:1 static contrast ratio and a response time of 5 ms, this monitor is ideal for graphic design, photography, and video editing. The Philips 200CW8 also boasts an energy-efficient design, adhering to Energy Star standards, which helps reduce overall energy consumption while maintaining high performance.

On the other hand, the HWC8200T is a versatile all-in-one solution that combines high-quality display capabilities with robust functionalities. This model is tailored for dynamic environments such as classrooms, conference rooms, and retail spaces. With a 22-inch touchscreen display, the HWC8200T allows for intuitive interactions, making it easier for users to engage with content.

Utilizing capacitive touch technology, the HWC8200T delivers an ultra-responsive experience with 10-point multi-touch capabilities. This makes it suitable for collaborative work, presentations, and interactive kiosks. The HWC8200T supports Full HD resolution of 1920 x 1080 pixels, ensuring that images and videos appear sharp and lifelike. Additionally, its sleek design and slim profile make it a stylish addition to any environment.

Both models come equipped with various connectivity options, including HDMI, DVI, and VGA ports, providing flexibility for use with multiple devices. The built-in speakers enhance audio output, making them suitable for multimedia presentations or casual entertainment. The Philips 200CW8 and HWC8200T are designed to meet the demands of modern users, offering exceptional performance, reliability, and user-friendly features, ensuring they satisfy professional and educational needs alike.
Top Page Image Contents