davidpratten.com

David’s Tech and other Interests

Archive for August, 1991

Map Representation

without comments

A way of representing maps in a computer. See pdf.

Written by david

August 14th, 1991 at 5:12 pm

Posted in Uncategorized

Car positioning without GPS

without comments

An internal map can be matched to the integration of distance and direction measurements. See pdf.

Written by david

August 14th, 1991 at 5:09 pm

Posted in Ideas

Personal Franking Machine

without comments

I am bugged by buying stamps. What about a personal franking machine? See pdf.

Written by david

August 14th, 1991 at 4:57 pm

Posted in Ideas

Disposable Suitcase

without comments

  • good for maybe 10 flights
  • <$10-15 each
  • same shape as conventional suitcases
  • great for moving to a new area

possible design

  • external plastic sheet
  • middle net like a fishing net
  • inner: cardboard for rigidity

seal with plastic disposable ties.

Written by david

August 14th, 1991 at 4:31 pm

Posted in Ideas

Kazakh Notes

without comments

Kazakh Notes was published in 1991 and is still being used by Kazakh language learners. The key contribution of Kazakhnotes was the consolidation of Kazakh language rules into a common framework.

Written by david

August 14th, 1991 at 4:12 pm

Posted in Ideas