Thursday, February 1, 2007

Windows Vista

Windows Vista is here at last. One of the largest software projects ever undertaken, Vista is indisputably a milestone—despite Microsoft's having abandoned many of its most ambitious goals for the OS—and not just for Microsoft but for the entire PC industry.

Of course, Vista is not without its skeptics. PC makers say it will require more processing power, graphics capabilities, and memory than is typical of today's mainstream machines. Software vendors complain that Vista's vaunted security features are, in fact, locking them out. Users may wonder if it offers enough that's truly new to be worth the bother—particularly given that a number of Vista features and bundled applications are also available for Windows XP.
We've performed extensive, hands-on analysis of Vista and sorted out the claims to help you decide whether, or more realistically when, to make the move—and to show you what you can expect when you do

Microsoft calls Vista "a breakthrough computing experience." That's marketing hyperbole, for sure, but it's not entirely unfounded. The new OS is far more than Windows XP with a pretty new face. Many aspects of Vista are substantive improvements: stronger security, better built-in apps, networking enhancements, parental controls, and DirectX 10 graphics support, to name just a few.


As a whole, Vista feels more evolutionary than revolutionary. That's not all bad; one of Microsoft's strengths has been its commitment to backward compatibility, which continues with Vista.
Vista's real competitor, though, is Windows XP. For many users, XP is good enough. And for all the advances in Vista, it's hard to avoid seeing the things that aren't as good as they could have been.
Nor is Vista bug-free. As I assessed final code, I ran into a variety of small but annoying glitches and found plenty of features that didn't work as seamlessly as I would have liked. I can't shake the feeling that Vista's release was rushed.

So what's our verdict? Vista is good—in some respects very good—but not spectacular. Call it a nice-to-have product rather than a must-have.
If you're buying a new consumer PC this spring, it probably makes sense to get Vista. (For a few contrarian points of view, see "Why Not to Buy Vista".) Soon, there won't be much of a choice; according to Microsoft's support life cycle, retail PC buyers will have only a year after Vista's release to buy Windows XP.
If you've already got a PC running Windows XP smoothly, it's harder to see a reason to upgrade right away. You can wait until you replace your machine, or at least a few months, until Vista's kinks are worked out. (If you're curious to see how well your existing machine will support Vista, try Microsoft's Vista Upgrade Advisor, available at www.windowsvista.com/upgradeadvisor). In the meantime, you can download some of the new software included in Vista, such as Internet Explorer 7, Windows Media Player 11, and a desktop search utility, to enjoy some of the same capabilities you'd get in Vista itself.
For business customers, it makes sense to start evaluating Vista now, particularly since improved deployment, management, and security could lead to significant cost reductions in the long term. But you'll want to be confident about compatibility and support before you make the transition en masse. (See "Vista at Work," for more on features for businesses in Windows Vista Business and Vista Enterprise.)
Let's dive in and take a more detailed look at what Vista has to offer

Some of an operating system's crucial responsibilities include managing hardware and drive storage and providing a set of APIs (application programming interfaces) that other software can rely on. And, indeed, some of Vista's most important enhancements lie beneath the surface. Many of these improvements are security related. We've written extensively about them, and you can get the latest in "Microsoft Locks Down Security...and Roils Security Vendors".

Networking is another revamped area. Vista's new TCP/IP stack includes native IPv6 support and auto-tuning via TCP window scaling. And it has better built-in Wi-Fi support.
Vista also has a number of performance enhancers. SuperFetch tracks frequently used programs and preloads them. ReadyBoost lets you use flash memory on a high-speed USB drive as a supplemental swap file (this can be substantially faster than a spinning hard drive). ReadyDrive supports hybrid hard drives with built-in flash-memory caches. There's also a low-priority I/O mechanism that lets programs such as Windows Defender run scans in the background with less disruption to foreground activity; and Vista automatically schedules drive defragmentation.
On the whole, my experience has been positive—on a screamer system. Others have had worse luck, particularly those who skimped on RAM. The SYSmark and MobileMark benchmark tests are currently being modified for testing Vista's performance; once they're up and running, we'll post performance results at go.pcmag.com/vistaspeed.
Vista's new sleep mode is supposed to make suspending and resuming faster and more reliable. With the machines I've been testing it on, I don't sense huge benefits from the new sleep mode. Whether that's due to Vista or to third-party hardware or drivers is hard to determine.
Microsoft also made a lot of more fundamental changes in the OS kernel, which provides low-level functions such as memory management, multi-processor synchronization, and I/O scheduling. Most are intended to help improve performance, security, and reliability.


Vista also extends the Windows API by incorporating the .NET 3.0 framework, giving developers capabilities that include Windows Presentation Foundation (formerly code-named Avalon), Windows Communication Framework (formerly Indigo), and Windows CardSpace (formerly InfoCard). But there's no WinFS (Windows Future Storage), the database-backed file system that was to be one of Vista's core innovations. As a result, Vista's support for tagging and relating files is less extensive than Microsoft promised back when the OS was still known by its code name, Longhorn.

Wednesday, January 24, 2007

Top Linux Organizations Merge

With Linux growing by leaps and bounds, it only makes sense that two of the top organizations that guide its growth are finally joining forces. If all goes well, sometime this February the Open Source Development Labs and the Free Standards Group will merge to form the Linux Foundation.

The OSDL (Open Source Development Labs), based in Beaverton, Ore., has long supported Linux and other open-source programs. Its membership includes almost all significant Linux organizations and companies. After reorganization in December, in advance of this merger, the non-profit organization clarified its goals.

The OSDL began shifting its resources to focus on four main areas. First, it said it would continue to employ key open source developers, such as Linux creator Linus Torvalds and Andrew Morton, maintainer of the production Linux kernel. The organization also said it planned to increase its funding of legal support for Linux and open source.

source:www.pcmag.com

Sunday, January 21, 2007

Microsoft to make Vista available online


Microsoft Corp. will make its new Windows Vista operating system available for sale and download online, marking a new step for the software company, which has previously sold Windows only on packaged discs or pre-loaded on computers.

A relatively low number of computer users are likely to get Vista by downloading it from the Internet. But the mere availability indicates that Microsoft is fiddling with distribution methods for the extremely profitable franchise at the core of its business.

The download program, announced late Wednesday by the Redmond, Washington-based software maker, will also include the Office 2007 line of software when both are released for consumers January 30.

At least initially, the huge downloads will be available in North America only.
Far more commonly, consumers will get Vista already installed on new PCs bought after January 30.
The download process is targeted at people who are running the prior operating system, Windows XP, and want to get Vista without having to buy a new PC.


However, Vista imposes hardware requirements that not all Windows XP machines can meet.
For those who do buy Vista the normal way, Microsoft is launching a new program that makes it easier to upgrade from one edition of the operating system to another.

Here's how that will work. For consumers, Vista will come in four flavors, Home Basic, which retails for $199, Home Premium ($239) Business ($299) and Ultimate ($399). Though consumers will pick one version when they buy a computer, higher versions will be embedded on the machine's hard drive or packaged on discs that come with it.

Anyone who wants to move up the chain -- from Home Basic to Home Premium for another $79, Home Basic to Ultimate ($199), Home Premium to Ultimate ($159), or Business to Ultimate ($139) -- will be able to click a new "Windows Anytime Upgrade" function, pay for the upgrade online and then receive a coded license "key" that will unlock the more expensive edition.

Microsoft also plans a promotion that will let buyers of Vista Ultimate get $50 copies of Home Premium for two other PCs.
Bill Mannion, director of consumer marketing for Windows, called these three steps part of an overall effort "to give more flexibility to end users."
Matt Rosoff, an analyst with Directions on Microsoft, said the company likely was hoping to increase the incentives for consumers to buy costlier versions of Vista.

Indeed, much of the marketing surrounding Vista will highlight features available only in higher-end versions, such as the new three-dimensional user interface and encryption functions.

Toshiba joins European DVD battle



Roughly 40 HD-DVD titles are released in the UK this week




Toshiba has launched its new high-definition DVD player in Europe, marking the start of a battle for living room domination.
The electronics firm wants consumers to use their HD-E1 DVD system rather than the rival Blu-Ray format.

Blu-Ray is being backed by electronics firms Sony, Samsung and Panasonic as well as a number of film studios.

The tussle between HD-DVD and Blu-Ray is similar to the 1980s war between VHS and Betamax video, analysts said.

Toshiba has forecast 500,000 worldwide sales of its HD-DVD player by March 2007.

HD-DVD
Price: Roughly £450
Disc: 15GB or 30GB
Supporters: Toshiba, NEC, Sanyo, Microsoft, Intel
Studios: Universal, Warner, Paramount

HD-DVD Promotion Group

Its system will retail for about £450, roughly half the price of Blu-ray.

A more feature-laden HD DVD player from Toshiba - the HD-XE1 - is planned to launch from late January 2007 for around £649.

Despite differences, both of the new DVD formats offer greater storage capacity than traditional players to cope with the increased size of encoded images needed for high-definition televisions.

And both players have an internet connection, which adds further possibilities of downloadable extras and film teasers.

Blu-ray
Price: Roughly £900
Disc: 25GB or 50GB
Supporters: Sony, Samsung, Panasonic, Sharp, Philips, Hitachi, Pioneer, Apple, Dell
Studios: Sony, Disney, 20th Century Fox, Warner, Paramount


Blu-ray Disc Association

HD-DVD discs contain up to 30 gigabytes (GB) of data, compared with 50 GB for Blu-ray.

Disney and 20th Century Fox are backing Blu-ray, while Universal is supporting HD-DVD.

Warner Bros and Viacom have said they will support both.

With no agreement between studios, both formats may continue to exist side-by-side for a while, analysts said, adding that many consumers may put off buying a system until a clear winner emerges.

Source:BBC news

HDTV Basics

Q. What is HDTV?
A. HDTV (high-definition television) comprises a family of digital broadcast formats that offer extremely clear wide-screen pictures and Dolby Digital sound. An HDTV broadcast contains about six times as much picture information as a conventional analog TV broadcast.

Q. What does "wide screen" mean?
A. In television, a wide-screen picture is one with a 16:9 aspect ratio--that is, 16 units of screen width for every 9 units of screen height. This is very close to the aspect ratio most commonly used in the film industry and a better match to the human visual field than the traditional, almost square 4:3 aspect ratio of conventional television (and of movies made before the early 1950s).

Q. What are 1080i and 720p?
A. These are the picture formats used for HDTV broadcasts. Some networks and stations use 1080i (CBS and NBC, for example), whereas others (including ABC and Fox) use 720p. TV creates an illusion of motion by displaying a succession of still images. In a 1080i signal, each complete video frame is 1920 pixels (picture elements) wide by 1080 pixels high, transmitted in interlaced format. A 720p signal, on the other hand, contains 1280 by 720-pixel frames transmitted in progressive format.

Q. What is 1080p?
A. Basically, it's a progressive version of 1080i (see above). HD DVDs and Blu-ray Discs carry video in 1080p format; it is not used for broadcast.

Q. What's the difference between interlaced and progressive video?
A. Progressive video presents a complete frame at a time. Interlaced video, on the other hand, builds each frame out of two fields--one comprising the odd-numbered pixel rows, or scan lines, the other the even-numbered pixel rows--which are presented alternately. Whereas the frame rate for 720p (progressive) HDTV is 60 per second (60 fps), the frame rate for 1080i (interlaced) is just 30 per second, but with a field rate of 60 per second.
If you're thinking, "Well, that seems like a bit of a cheat," you're right. It's a pretty effective one most of the time, however, which is why interlacing was adopted for the analog television systems of the twentieth century. It allowed greater effective picture resolution within the transmission bandwidth allotted for TV channels, yet the screen was refreshed frequently enough to avoid obvious flicker on the cathode-ray tube (CRT) displays of the era. Its advantages outweighed its drawbacks.

Q. Which is better, 720p or 1080i?
A. That depends on the amount of motion in the program. For still images or scenes containing relatively little motion, 1080i can deliver greater detail. But 720p excels on scenes containing fast motion. That's why the networks with the heaviest commitments to sports programming have adopted 720p. ABC owns ESPN, for example, and Fox owns many regional sports networks.

source :www.pcworld.com

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