23-01-2010, 10:07 PM
ARCHITECTURE, USER INTERFACE,
AND ENABLING TECHNOLOGY
IN WINDOWS VISTAS
Existing speech recognition systems have claimed high accuracy for specific tasks such as dictation. What is new in Windows Speech recognition for Vista is a combination of high accuracy and high usability for the end-to-end speech experience. This paper describes the architecture, user interface, and key technologies that make up the speech system incorporated in Microsoft Windows Vista. It outlines some of the challenges encountered in providing a speech-based interface to a system as complex and
extensible as the modern desktop PC, as well as the technology developments that have made this possible. In particular, the paper describes key elements of the speech user interface and how the userâ„¢s ability to control the system is maintained despite limitations in the underlying recognition technology. The paper also explains how feedback and adaptation systems are used to tailor the experience to each user and their particular style of speaking/use of language.
This paper clearly explains the features of windows vista and Architecture of overall system and speech recognition system and applications of speech systems.It gives a overall description of Windows Vista.
Windows Vista is a line of operating systems developed by Microsoft for use on personal computers, including home and business desktops, laptops, Tablet PCs, and media center PCs. Prior to its announcement on July 22, 2005, Windows Vista was known by its codename Longhorn. Development was completed on November 8, 2006; over the following three months it was released in stages to computer hardware and software manufacturers, business customers, and retail channels. On January 30, 2007, it was released worldwide, and was made available for purchase and download from Microsoft's website. The release of Windows Vista came more than five years after the introduction of its predecessor, Windows XP, the longest time span between successive releases of Microsoft Windows.
Windows Vista contains many changes and new features, including an updated graphical user interface and visual style dubbed Windows Aero, improved searching features, new multimedia creation tools such as Windows DVD Maker, and redesigned networking, audio, print, and display sub-systems. Vista also aims to increase the level of communication between machines on a home network, using peer-to-peer technology to simplify sharing files and digital media between computers and devices. Windows Vista includes version 3.0 of the .NET Framework, which aims to make it significantly easier for software developers to write applications than with the traditional Windows API.
Microsoft's primary stated objective with Windows Vista, however, has been to improve the state of security in the Windows operating system. One common criticism of Windows XP and its predecessors has been their commonly exploited security vulnerabilities and overall susceptibility to malware, viruses and buffer overflows. In light of this, Microsoft chairman Bill Gates announced in early 2002 a company-wide "Trustworthy Computing initiative" which aims to incorporate security work into every aspect of software development at the company. Microsoft stated that it prioritized improving the security of Windows XP and Windows Server 2003 above finishing Windows Vista, thus delaying its completion. While these new features and security improvements have garnered positive reviews, Vista has also been the target of much criticism and negative press. Criticism of Windows Vista has targeted high system requirements, its more restrictive licensing terms, the inclusion of a number of new digital rights management technologies aimed at restricting the copying of protected digital media, lack of compatibility with certain pre-Vista hardware and software, and the number of authorization prompts for User Account Control. As a result of these and other issues, Windows Vista has seen adoption and satisfaction rates lower than Windows XP.
BREADCRUMB PLANE & NAVIGATION PLANE
Hard disk space is cheap these days, so everyone has a ton of it. Many people have thousands of files stored in all the space, organized into many folders and subfolders. Navigating up and down through folders all the time gets old. Vista has quite a few new tricks up its sleeve to help with that. Probably the most important trick is the breadcrumb trail (also called an eyebrow menu) in the Address bar at the top of every folder. Some of you may recognize the concept from Web sites that offer similar navigation. In Vistaâ„¢s eyebrow menu, you can click the name of any folder you see in the trail to go to that folder. But thereâ„¢s much more to it than that. You can also click the arrow that appears next to any item in the trail to see other items at that same level in the folder hierarchy, like in figure. The eyebrow menu is worth its weight in gold. But itâ„¢s not the only improvement. Thereâ„¢s an optional navigation pane at the left side of every folder that contains quick links to common places. The links you see under Favorite Links are just examples. You can put links to any folders you like in there, and remove them just as easily. So you can constantly customize to reflect the folder youâ„¢re using most. The trusty Folders list is still available, too. You might not see it at first. To bring it up, just click the arrow next to Folders at the bottom of the navigation pane.
The most obvious new feature is the Aero glass interface. Windows interface have been using a 3D interface for many years. You can open as many programs as you want, and they stack up like shepaper on a desktop. It just wasnâ„¢t very obvious that you were using a 3D interface with items stacked up on your desktop. Aero Glass changes that by making the borders around program windows semitransparent, so you can see when thereâ„¢s something behind whatever youâ„¢re looking at. Aero also adds a little drop-shadow around the window border to make it look more raised. Figure shows a small example. But itâ„¢s much more noticeable on the actual screen.
The another striking feature in Vista is FLIP 3D. Along with the 3D appearance of Aero Glass comes a new way to take a quick look at all your open program windows. The old ways of doing things still work. For example, you can click the Show Desktop button in the Quick Launch toolbar to minimize all open program windows. You can still use the Alt+Tab shortcut key to switch between open programs. For the new alternative method, press +Tab or click the Switch Between Windows button in the Quick Launch toolbar. Either way, all your open windows arrange themselves as in Figure When displayed in 3D, you can cycle through the open windows by spinning your mouse wheel or by pressing the and keys. Click any visible portion of a window to bring it to the top of the stack.
Windows Sidebar lets you place gadgets on your desktop. Many gadgets hook into Internet services to keep you informed in real time. For example, there are gadgets for watching the weather, watching stock prices, and keeping up with headlines from your subscribed RSS feeds. Figure shows the sidebar at the right side of the screen with a clock up top. The window in the middle is the Gadget Gallery from which you can choose the gadgets you want to use. You might have different gadgets. Not to worry. There are plenty of gadgets online that you can download for free.
START MENU SEARCH
Search starts right at the bottom of the Start menu. If you know the name of a program or Control Panel applet you want to open, or some keyword associated with a document, person in your Contacts folder, or Windows Mail message, you donâ„¢t have to navigate at all to get to the item. Instead, open the Start menu by clicking the Start button or by pressing or Ctrl+Esc. Then just start typing your search word. As you type, the Start menu shows items that contain the characters you are typing . When you see the item you want , just click it.
Searches in Vista donâ„¢t slog through the whole file system looking at tens of thousands of irrelevant files along the way. Thatâ„¢s too slow and tedious. Instead, Windows Vista searches through a search index. The index contains filenames, tags (keywords), and even the contents of messages and files. So when you search for something like catwalk you get all files that have that in the filename, tag, or even inside the document .
The Welcome Center is a program window that might, or might not, appear automatically when you first log in to Windows. It shows information about your computer and provides some links to a few Windows features and some online resources. Figure shows an example. Yours might look a little different.
When you click an icon in the lower half of the window, the upper half changes to show you more information. Click the Show more... or See More... link message in the upper half of the window to see more information. To leave the more information page and return to where you were, click the Back button in the
upper-left corner, or press the Backspace key on your keyboard. If you donâ„¢t want the Welcome Center to open automatically each time you log in, clear the checkmark next to Run at startup in the lower-left corner of the window. (Click the checkmark to clear the checkbox.) If you donâ„¢t see the Welcome Center, but want to, click the Start button, type wel, and then click Welcome Center on the Start menu. If you want it to open automatically each time you start your computer, click the empty checkbox next to Run at startup to select that option. You can maximize, minimize, restore, move, size, and close the Welcome Center window as you can any open window.