Extracting the infrared code of a remote control

From: Infrared (infrared_at_spamhole.com)
Date: 06/29/04 

Date: Tue, 29 Jun 2004 02:04:31 GMT

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The users of some digital cameras with infrared remote shutter release
ability have discovered codes for universal television remote controls
which will work on their cameras.

I own a Nikon D70 and the ML-L3 infrared remote for this camera is
scarcer than hen's teeth.

Question #1: Is the procedure to read an IR pulse to attach
oscilloscope probes to an IR receiver (such as from a used VCR) and then
scope its terminals?
[If I owned this remote, I would try this and share the result.]

Question #2: Is there any way beyond brute force trial and error to
cross-reference the result of said experiment to the brand and function
of an appliance? (Such as IR pulse XYZ = Zenith, "Channel Up")

Question #3: If the pulse information were provided to me, how much
knowledge and overhead is required to create an IR emitter for this
purpose? How about to make an intervalometer out of it, whereas it
would trigger once every 3 minutes, for example? (time lapse
photography, which the stock item does not do)