Article View: sci.image.processing
Article #378Re: Please Tell Me About Highspeed Digital Camera
From: Stephen P Blackstock
Date: Thu, 27 Aug 1992 21:52
Date: Thu, 27 Aug 1992 21:52
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1646 bytes
In article <1992Aug27.162614.14451@vexcel.com> jic@vexcel.com (jic account for NAVY) writes: >In article <BtLLqn.G0F@world.std.com> bozo@world.std.com (Stephen P Blackstock) writes: >>In article <1992Aug14.221309.4092@ttinews.tti.com> hollombe@polymath.tti.com (The Polymath) writes: >> >>Leaf Systems makes a digital camera back which attaches to a >>Hasselblad camera body. It transfers image data (in about 2 seconds) to >>a Macintosh Quadra via SCSI. Resolution is 2K x 2K x 14 bits per pixel, so >>the amount of data transfered from camera to Mac is 8MB. Software allows >>windowing and gamma-mapping of 14-bit data to produce 8-bit images. > >I'm a little confused, 8MB in 2 seconds? Isn't that around 32 Mbits / Sec? Yes. 4MBytes/sec, or 32 MBits/sec. >and isn't SCSI limited to 10 Mbits / Sec? Absolutely not. Certainly, the Mac's built-in SCSI has severe limitations, but even it can easily do 1.55 MB/sec, or about 12Mbits/sec. Leaf's camera back uses a NuBus SCSI card which is capable of 10MB/sec. SCSI-2 standards specify rates even higher. -Stephen Blackstock Leaf Systems, Inc.
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Path: arc1-ca.pugleaf.net!sparky!uunet!elroy.jpl.nasa.gov!usc!rpi!bu.edu!Shiva.COM!world!bozo From: bozo@world.std.com (Stephen P Blackstock) Newsgroups: sci.image.processing,comp.graphics,sci.med,sci.med.physics Subject: Re: Please Tell Me About Highspeed Digital Camera Message-ID: <Btnwr5.HK5@world.std.com> Date: 27 Aug 92 21:52:16 GMT References: <1992Aug14.221309.4092@ttinews.tti.com> <BtLLqn.G0F@world.std.com> <1992Aug27.162614.14451@vexcel.com> Organization: The World Public Access UNIX, Brookline, MA Lines: 24