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Post by only_bbs!JOHN_LOCK.. » Mon, 15 Mar 1993 09:53:00



 > John "HUTCH" Hutchinson : C'mon people... get a life!  

 Interesting tag line. =^)  
 Anyway, the number of colors the human eye can see is important.  
 Medical X-rays are sent as 12 bit grey scale images and a small  
 company called Silicon Graphics determined that for a monitor to  
 deispaly colors to the human eye properly, you'd need a 36 bit  
 RGB signal.  That doesn't invalidate the fact that the human eye  
 sees 8 million to 10 million colors, I just means that you need  
 a 24 bit to 36 bit conversion table for the ADCs.

--
via Fortress Gateway at uumind.mind.ORG

 
 
 

1. (none)

I have two projects that I can not complete due to lack of information. One
is what I would think would be of interest to any 8-bit user that is into
graphics, including APAC and Colrview.
  I have come up with a way to capture images (full color RGB) in 1/60th
second. Actually, it would be 1 or 3 7680 byte images. The process would be
to hook up a composite video source to the video digitizer (similar to
Computer Eyes), strip off the h-sync and v-sync signals for timing, send the
raw video signal through a Chroma demodulator to a 4 bit flash ADC. The pixel
 data would be stored in a high speed 32k x 8bit SRAM on-board the digitizer.
The timing, communication and control stuff could be controlled by a 65xxx
CPU running at >=4MHz. The control program/OS for it could be written in
MAC/65 and stored on EEPROM or similar device. Communications would be in
parallel via the 2 joystick ports using pins 1-4 on both for data, pins 5&6
on both for control handshaking and signaling. Finally, the data would be
clocked into the computer RAM for storage on disc, printing and/or
manipulation via a user interface program written in say BASIC XL or maybe
TBXL or some such.
  The second project is regarding the conversion of a BBS program from Turbo C
 on the IBM platform to MAC/65 or Action! on the 8-bit. The program is
Citadel:K2NE and I have all the necessary source code, docs and other info
for it. The conversion could be made to work on upgraded XL/XE computers of
anyway. On the other hand, it could be written in modules that swap in and
out as needed and be compatible with normal 103XE computers.
  Any takers?

   =>Dr. Jolts<=---------*

 You've had the power all along!
  Atari Computers-Real Business!
  P  
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2. need info on UNIX implementations of COM

3. FS: Palm Pilot Professional, almost new, $250 + shipping

4. none

5. WTB: RAM f. A 1000

6. (none)

7. Windows NT 4.0 Tools (WINS Admin help!)

8. None computer question: Where can I get a atari logo t-shirt

9. <None>

10. Program for IBM to read Atari disks (was NONE)

11. <None>