I didn’t think it stood for anything as it was just part of the model number. But I just noticed a sticker on the bottom of my TR that says the model number is PCG-481M. Which means the PCG-TR1MP must be the model name. And if it’s a name then it must stand for something. Mustn’t it?
Just like Sony’s other products, the TR increases in number with each revision (TR1,2,3) and usually gets a new letter with a generational leap. The TR’s designers said that they wanted to create a new subnote with an optical drive to succeed the SR, and here we are with the TR series.
It’s probably best not to contemplate it too hard. The prefix PEG (Clie) is supposedly for Personal Entertainment orGanizer. The game company SEGA is from SErvice GAmes. It could even be a series number followed by the prototype letter that made it to production. I have a hard enough time understanding Sony’s market strategies, never mind their numbering system.
Personally, I would have called the line the PCG-AE. (Apple Equivalent :D )
The TR moniker is interesting. Sony has used it since the 1960’s. They had a TR radio; back then it stood for “transistor.” In the 1980’s the first ultra-compact Sony Handycam also bore the TR name. I thought maybe it was for “tiny recorder” then. It always seems to be associated with a design breakthrough relating to size.
) Guess we’ll never know, eh? Unless some Sony insider happens on this site.
That’s pretty hilarious. 
or, Terrifically Rawking! 
