Date:2012-12-19 18:11:42 (6 years 9 months ago)
Author:Werner Almesberger
Commit:1c672a640cb9bac08d819105e8f812a30d82393f
Message:tornado/doc/README: calculate image size

Files: tornado/doc/README (1 diff)

Change Details

tornado/doc/README
5454CH1 (yellow) is the signal exiting the last module. The absence of
5555degradation in a 250 ns pulse suggests that we can go as fast as the
5656MCU is able to.
57
58
59Image size
60----------
61
62With a radius of 80 cm the circumference is roughly 5000 mm.
63In order to obtain square pixels at the outer radius, we therefore
64need 1000 lines per rotation, irrespective of speed. Each line
65consists of 64 pixels or 8 bytes of data. Therefore, the full disc
66needs roughly 8 kB of data while a quarter disc needs 2 kB.

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