What diference between JAVA TV, OCAP, Xletview, Cardinal Studio, Espial...

I am newbe in digital TV area, and one of my great doubt is in relation the most diverse acronyms and names that appear, carrying would like that they clarify me some doubts.
Which the difference between as many implementations that they exist today, for example: JAVA TV and OCAP?
The Xletview is an implementation freeware of certain the Dvb-mhp standard? What your relation with JAVA TV?
This Dvb-mhp has any software release or is only one consorcium that it defines rules for digital TV?
What are the best simulator today to test applications for Digital TV? Currently I am using the implementation of devicetop.com but it seems that it is not complete, that is truth? Because it is not complete, what it is lacking?
Sorry for many questions.

First of all, sorry for the delay in responding. I've been buried under a mountain of work for the last week,and so this is the first chance I've had to check in here for a while.
Some more details on the book:
- It'll be published sometime before Christmas, hopefully. The manuscript has been delivered to the publisher, so now we have wait for them to complete the technical review, then we have to make any changes that they need (or that we wantot make). Then it will actually get published.
- As far as I know, it will be available worldwide, and you will certainly be able to order it via amazon.com
- I don't know the price yet
- It will cover OCAP, MHP and JavaTV, with some discussion of ACAP (but not much). We're looking at most aspects of these standards: building applications, building middleware, and how you can make money off them
- It's based on my website, but with some MAJOR changes. It's probably going to be around 600 pages long, so there's a lot of new material there. I've tried to cover as much as possible about the questions that people have been posting here and on the MHP forum, as well as the questions I get in email, because these are the areas that peopole want answers to.
- I can still make some minor additions, so if there's any questions that you'd really like to see answered, please let me know (email to [email protected]). I can't promise to answer them in the book, but I'll do my best and I can always cover them on the website.
- I'm the author of the technical bits. My co-author for the more commercially-oriented bits is Anthony Smith-Chaigneau, VP of business development at Osmosys and ex-DVB. He knows the commercial side of MHP/OCAP as well as anyone out there. I've been doing MHP/JavaTV since the early days of the standardization process for those standards (and standardizing DAVIC before then), so between us we've got a pretty good grasp on the material and the commercial/political/technical background to the various standards.
- There is no mailing list yet, but if people think it's useful then I can create one. Let me know what you think.
To answer funniest's questions, your list covers most of the things that you need to do to implement an OCAP receiver. Some stuff like storing applications is missing, but this comes under the general case of 'application management'. Of course, there is all the other OpenCable certification that you need to do as well, but that's not specific to OCAP. I know that OCAP are discussing conformance testing, but there's no firm decisions yet as far as I know. Maybe they will follow the MHP approach, or maybe they'll extend their 'Wave' certification program. This is also one of the areas that OCAP and ACAP need to agree (because of the OCAP APIs that are re-used in ACAP), which complicates things.
As for other OCAP activities, there are a few OCAP trials underway in various places in the US. I can't say too much about them, but I know that many cable companies are looking at OCAP, even if they're not running trials yet. The Sun OCAP content is the only activity that is generally open to the public at the moment, as far as I know.
Steve.

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