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19770518_Progress_Image_Processing


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           Internal Memo


 To:       Wendell Shultz                       Date:             18 May 1977
 From:     Ron Rider                            Location:         Palo Alto

 Subject: Progress, Image Processing            Organization:     SDD/SD/IP



XEROX
 This month the Dipole/9200 portion of the Durango project became operational.
 It is meeting or exceeding all expectations. The controller modification allows
 complete control of the 9200 including random access to each sorter bin and
 both paper trays. The 9200 is still fully functional as a duplicator and can be
 maintained by 9200 field service personnel. The transition from duplicator to
 Dipole mode is under control on the computer. A mode change requires eight
 seconds. The ROS 9-wire interface is also performing exceedingly well. The
 Dipole/9200 is currently cabled to an Alto/Orbit via this interface. The
 Alto/Orbit can drive the Dipole/9200 at 300 lines/inch. This progress report
                 is printed using Alto/Orbit/Dipole/9200. Notice that the half-
                 toned insert is reasonably good considering it is screened at 50
                 lines/inch. A number of experiments are now being performed
                 including the incorporation of a grating bit clock. The new clock
                 should greatly improve screened pictures at higher resolutions
                 such as 500 lines/inch.
 The next Durango related project is the image generation unit. This image
 generator will use the Orbit concept and be interfaced to a DO processor. It
 will have about five to six times the performance of Alto/Orbit and will
 incorporate an integral data decompressor for full imaginal capabilities. The
 new image generator should be ready for test as soon as a DO is available.
 The printing software that is generalized for use on Durango, Sequoia, and
 Dover is progressing well. The initial part of the software package which
 parses a Press file, sorts the entities, and generates a band list for Orbit-like
 devices is now running on a test file. An Orbit simulator is currently in
 progress. It is believed that a simple Press file (e.g. from Bravo or Sil) will
 be printable on Durango, Sequoia, and Dover within two months. Following
 this milestone, the software will be augmented to handle arbitrary Press
 files. Finally complete spooler services will be provided.
 The Sequoia project is proceeding very well. The laser noise problems seem
 to be solved and initial copy quality is excellent. Laser life is still an
 unknown. This could be an annoying problem but is not a show stopper.
 Final integration of the ROS adapter and Sequoia is in progress. The first
 Sequoia is expected in Palo Alto about June 1.

 Copies to: Irby, Lynch, Stottlemyre, Wallace, Metcalfe, Simonyi, Szelong



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