Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : Qualcomm Moderated Thread - please read rules before posting -- Ignore unavailable to you. Want to Upgrade?

To: Bux who wrote (5132)	12/2/2000 5:26:42 PM
From: John Biddle	Read Replies (2) \| Respond to of 196628

I don't think that is prohibitive so we don't need to talk of even 2MB bandwidth needed to display B&W video. I'm afraid it's not quite so easy as that. Displaying text in B&W might work ok, but what about color images? Even with today's better chips, it's going to be tough to support a 320 x 240 (say, Palm sized) 256 color image being refreshed 60 times per second. That's 36.8 Mbps. Not only do you have to decompress this huge datastream at the display device, you'll have to compress it on the CPU side. Possible, but it takes quite a chip to do it and it will use up significant battery power. Face it, Bluetooth is not optimized for video and may not be god enough. Better uses include connecting the cell phone to a laptop where the cellphone can essentially forward the datastream to the CPU in the laptop which has adequate video bandwidth because of it's fast bus. Even here, if you're getting up to 2.4 Mbps at the phone you'll be throttled down quite a bit, but as I've agreed before that will be fine for years. Other input & output devices will also be fine, like a mike and speaker, and of course a keyboard. Digital cameras will be fine for stills, but I don't see video. Video conferencing at 56 Kbps sucks and I don't see it being popular on cell phones either. I think there's a reason separate video devices aren't part of the litany of cool Bluetooth uses touted by the vendors.