It's good to hear from you. In all seriousness, before I start my reply, I would like to congratulate you on your ongoing efforts toward inventing your own OS. This is no small undertaking. Your perseverance is an example to all others attempting to bring an open source project to the stage of popularity.
On the less serious side, so as not to be left out, I have decided to develop my own OS. Not wishing to rush things, I'll be launching mine in the year 2055. That's when Intel, under intergalactic agreement, rolls out their 1024 bit centa-core processor. On that very same day, I'll be taking advantage of secret inside information, and parade out my own, “Fault Free”, OS. I simply call it, “Empire”! No happy kitties here, my trade mark's a thermonuclear mushroom cloud! Displayed in hologram of course. To heck with warm and fuzzy, I'm going for the big kahuna! After infecting, I mean auto-installing, on every existing piece of known electronic equipment; I'll roll out my ultimate information coup. Via my proprietary telepathic cyber-mouse, I'll gather and sell all of the personal information of every life form dumb enough, I mean capable of activating it. At first, I thought my company motto should be, “Do no evil”. It has a nice ring, but sounds just too close to that other company. I therefore settled on, “Never give a sucker an even break”. It seems more to the point.
Returning to the mundane things of life, It's probably time for me to comment on your reply posting. I didn't mean to imply that the information was no longer available. In fact, I did mention that the information was still available on, “tuxradar.com”. I guess my point is there is no handy archive link on your home page. This is just a wild guess on my part, but from your page layout I'm assuming your CMS is Drupal. Yes, among the many other things I use to torment myself, I also do web development for fun and profit. If my guess is correct, I can fully appreciate the effort involved in modifying an existing, “Theme”, to reflect anything new. That said,(You must have guessed this was coming) it would be nice to have an archive link directly below all of the tuxradar links on your home page. It seems to me to be a more intuitive aid when searching for older material.
OK Nerdy-ish, it's your turn:
To begin, I want to stress that I'm not an attorney. Therefore you are not to take any of this as professional legal advise. When faced with legal issues, especially international law, it is highly recommended to seek the advise of a legal professional. Having dispensed with the usual C.Y.A. disclaimers, it's time to share some of my personal opinions, and experiences.
First, I feel there is, in general, an exaggerated unrealistic fear of the patent, “Boogy Man”. Referring to my earlier post, I was careful to construct a scenario where the company either abandoned support for the product, or had ceased doing business altogether. Should there be notice of infringement, these two items go a significant way to produce an outcome in your favor. Having said that, it is only fair to support the original manufacturer as long as they continue to support the product in a non onerous way. This should continue be true unless some entity has developed a replacement component found to be superior in either quality, or durability compared to the original, (This can, and usually does, make for an interesting court case!). By custom, and sometimes by legal requirement, manufacturers tend to post a list of pertinent patent numbers on their products. When in doubt, download the patents from one of the online repositories. After reading these patents, you will quickly find what was legally granted as protected intellectual property. You'll be surprised to discover just how little is really protected. Further, you will discover that most of what constituted this product is part of the free public domain. This can occur either by virtue of expired patents, copyrights, or longstanding established custom and commerce. The last part of the previous sentence is what protects you from paying royalties to someone for using the concept of a wheel on the bicycle you just built.
Should you be served with a reasonable notice of infringement, the usual course of action is to simply remove the product or information from the market accompanied by a big, “I'M SORRY!”. Problem solved. In theory, you could be pursued for financial loss, but the property holder would have to prove, among other things, prior knowledge of the protected property. Moral, do your patent search on someone else's computer; preferably in another city. LOL! It is interesting to note that what usually fails in a protected mechanical device is usually not intrinsic to the intellectual property grant. Therefore, the act of carefully crafting a replacement part that only repairs what is worn usually excludes you from liability.
Taking all of the above into account, there is an intricate distinction in case law between an entity affecting a repair, as in performing a service, as opposed to someone producing a large quantity of items for sale, as in manufacturing. If you decide to support a discontinued product by supplying large numbers of replacement parts for sale, you had better also have retained a high power law firm to defend you. Such is the cost of doing business in the modern world. On the service side of things, the act of renovating an antique auto, and then publishing the method of your restoration, is generally acceptable. It is this service side of things that I am confining my above solutions to. Not mass producing replacement parts!
Regarding any of my above opinions, I do invite comment from the legal community. After all, this is a thread on a, “Discussion Forum”. I'm sure we could all benefit from your legal expertise.
In the matter of your expressed doubt concerning the existence of such a repair device, I again refer you to the youtube videos I cited at the beginning of this thread. It is not just one device, but rather a family of devices that perform these feats. Rite before your eyes, you can view parts being created from blank stock. Of particular interest is a web site I recently became aware of. This web site is provided by a person I know very well. Until recently he was keeping this information private. He has recently, as evidenced by the posting at the bottom of the web page, released this information under the creative commons copyright.
You can view the site:
[Note: Should the embedded hyperlink fail to appear, manually enter the following URL “http://sites.google.com/site/calculatingrisk/Home/cnc-mill” into your browser search window]
The page I direct you to is a description of the conversion of a milling machine of Taiwanese manufacture that you could replicate as well. Both the author and I share the opinion that the quality of machine tools from Taiwan is of a higher quality than what is available from mainland China. All of this information arose from an undergrad project pursuant to the attainment of a Bachelor of Science in both Electrical, and Mechanical Engineering. He is currently in graduate school pursuing a Doctorate in Mechanical Engineering.
On this page, figure 1.7 – 1.8 depict conversion of the, “X”, axis of the machine. Conversion of the, “Y and Z”, axis remain. Figure 1.1 shows the computer running with the EMC2 software hosted atop an Ubuntu platform. One thing of importance here is that it is running on a real time kernel. This is a significantly modified standard kernel. The purpose of a real time kernel is to guarantee certain high priority events, as in stepping a stepper motor, to occur at a specific time.
One last thing, before I end up describing the whole article, is to direct your attention again to figure 1.1. The monitor displays a window with a blue background. This is the TKEMC user interface. To my knowledge, this is the oldest interface used on the EMC2 project. This interface was written using the TCL/TK computer language. Since, if possible, I can't resist looking under the hood, I had to learn the TCL language. It has since become one of my favorites. There are more recent user interfaces written in Python. That's the beauty of open source. You can pick your own platform.
I do want to emphasize that this web site is not exclusively devoted to machine control. Rather it's an eclectic ensemble of various research pursuits. From a preliminary article describing the construction of a scanning tunneling atomic microscope, to such mundane pursuits as installing a working hot tub.
I suppose inspecting a contour at the atomic level while soaking in a tub with your girlfriend might have some redeeming intellectual value. Then again, one is only twenty something for, well – er um – ten years.
Do check out the web site. It's a fun adventure.