Solve me a riddle! :D

[Molly]

Out of curiosity I'd like to know who can solve this riddle for me:

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In the picture above is the digital information of "001011" hidden. How?

It's not a contest. I am just curious...

[Kafein]

Every T corresponds to one bit, and the difference between the zeroes and the ones is that the wave is inverted

[Latvian]

answer is banana

[Molly]

Every T corresponds to one bit, and the difference between the zeroes and the ones is that the wave is inverted

I'll just assume that you mean with T the time frame between 2 keying points... so yes, that is correct!

Well, not 100% though cuz the wave isn't inverted.

Follow-up question: What happened to the wave and why isn't it inverted?

[Christo]

wat dis

[LordBerenger]

Nerd stuff

[Kafein]

Obviously T = twice the period of the wave

It looks "inverted" to me, in a completely informal sense, as in you multiply the coordinate of the points of the wave by -1. If I had to guess I'd say you add of substract a half period to the phase to produce that effect.

[chadz]

Thats how i "solved" it:

if you take the picture, divide it by the digits of the solution (6), and look at each wave part individually, whenever the middle of the wave is on the top its a 0, otherwise its a 1.

Yes, thats also how i approach coding.

[Kafein]

Yes, thats also how i approach coding.

explains a lot

[Prinz_Karl]

Please, let's make a riddle thread again, they were amusing.

[Thomek]

http://en.wikipedia.org/wiki/Frequency_modulation

[BattalGazi]

Here it is, pretty simple:

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[cmp]

psk

[Kafein]

psk

An engineer's answer.

[Molly]

psk

Exactly... Kafein was actually right except for the inverted part.

The phase is shifted for a logic 1 compared to the "standard" frequency.

Interesting to see the other explanations.

Some may ask what the point of this stuff is. Well, it's one of the basic principles for our mobile phones. And not far off the real application.
Phase Shift Keying (PSK) is a basic form of modulating information/data onto a waveform. If you add a few simple coding methods to it, you end up with something called DQPSK. And that stuff is still used for data transmission with the EDGE-standard on your mobile phones.
Main difference is that you're not transmitting single bits with it but "dibits" or data symbols. It's not just 0 or 1 but each symbol transmits 00, 01, 10 or 11 and therefore raising the transmission rate