To: CPAMarty who wrote (33885 ) 6/17/1998 9:53:00 AM From: Don Dorsey Respond to of 50808
The Battle for Your Living Room A number of vendors from disparate camps--cable TV, consumer electronics, and the PC industry--are vying to build the next-generation home-entertainment/computing devices. While these devices will keep developing well into the new millennium, it's clear that the ultimate living-room appliance will have more in common with your computer than your TV. But you don't have to wait until 2001 to see the TV and PC worlds merge on your desktop. Several vendors, including ATI, Diamond, and Matrox, offer TV-tuning options that let you watch television on your PC monitor. Why bother? Several ATI products, including the All-In-Wonder Pro and ATI-TV, can scan closed-captioned text behind the scenes and alert you when specified keywords are mentioned. Diamond's DTV 2000 accepts Intercast broadcasts for high-speed downloading of Web-based data related to programs on CNN, MTV, NBC, and QVC. Both products also capture still and video images, though video capture is limited to 15 frames per second, good for multimedia but not for output back to tape. TV tuners can be found as stand-alone cards, optional daughtercards for specific graphics cards, or built into a 2-D/3-D graphics card. Another convergence feature increasing in popularity is DVD playback. Though DVD-ROM software is still scarce, DVD is gaining momentum as a movie format, with feature-length DVD movies encoded in high-quality MPEG-2 video and Dolby Digital audio widely available. However, decoding DVD's audio and video streams is very demanding, requiring dedicated decoding hardware for the best results. Several companies, such as Creative Labs, Diamond, and Hi-Val, offer DVD upgrade kits that bundle a DVD-ROM drive with an MPEG-2/Dolby Digital decoder card. These PCI-based solutions work with both PCI and AGP systems.Some graphics cards claim onboard DVD-playback capabilities, but be wary--you want full hardware-based MPEG-2/Dolby Digital decoding to avoid dropped frames. DVD can be decoded in software, but software decoding has a voracious appetite for processor power; you'll need at least a 266MHz or 300MHz Pentium II. ATI enjoys somewhat of a lead in integrating DVD playback into graphics cards, supporting several DVD-acceleration features (though not true hardware decoding) in the Rage Pro chip set. However, you'll still need a 266MHz or faster Pentium II PC with AGP graphics. Dedicated hardware is also important for video capture, especially if your goal is to output edited video to analog tape. For example, Matrox's Rainbow Runner, a daughtercard for the Millennium II and Mystique boards, includes onboard Motion-JPEG (M-JPEG) hardware for full-screen, full-frame-rate capture. Whether you're looking at capture capabilities built into a graphics card, a stand-alone capture board, or a daughtercard, look for M-JPEG if you intend to output video to tape.