Archive for date: July 22, 2009

Paper detailing SSTV modes

July 22, 2009 | Amateur Radio | By: Mark VandeWettering

I was looking up technical information suitable for implementing some of the SSTV modes (Robot 36, given the recent satellite activity). Here’s a paper by JL Barber, N7CXI that gives you what you need to know. Robot36 is particularly fussy: uses an odd color space, Y, R-Y, and B-Y, with the difference channels sent only […]

BibliOdyssey: Extinct Monsters

July 22, 2009 | Link of the Day | By: Mark VandeWettering

BibliOdyssey is a terrific blog which posts incredible images from old books that have entered the public domain. By way of example, check out this awesome collection of images of “extinct monster”, megafauna and dinosaurs. Very nice images, such as the giant sloth on the right. If you like old illustratons, check it out, then […]

Schneier on Homomorphic Encryption Breakthrough

July 22, 2009 | Computer Security, Cryptography | By: Mark VandeWettering

A couple of weeks ago during lunch, someone had mentioned that a breakthrough in the world of cryptography had occurred: that someone had succeeded in creating something called a “homomorphic encryption scheme”. The thing was, nobody at the table really understood what that was all about. I did a brief bit of reading on it, […]