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Comment: Re:Clean room design has dirty and clean teams (Score 1) 175

by MobileTatsu-NJG (#49490281) Attached to: Cyanogen Partners With Microsoft To Replace Google Apps

This is a night and day difference with respect to reverse engineering...

No, it isn't. They had to go further out of their way to dance around that issue in order to make a legal clone.

...and the fact that IBM didn't want a compatible BIOS to be produced does not change this.

It changes this part:

Compaq et al were able to create clones because the IBM PC was an open platform.

Comment: Re:"Open" does not mean without copyright (Score 1) 175

by MobileTatsu-NJG (#49490143) Attached to: Cyanogen Partners With Microsoft To Replace Google Apps

...the fact is those working on a compatible BIOS had the IBM source code with comments to work from

... they clean-room reverse engineered it.

That is pretty open and greatly facilitated the creation of a compatible BIOS.

The fact remains that IBM published the source code to the embedded firmware, that is by definition open.

You can nitpick individual details all you like, but at the end of the day Compaq created the clone of the BIOS despite IBM, not with support from them.

Clean room design (also known as the Chinese wall technique) is the method of copying a design by reverse engineering and then recreating it without infringing any of the copyrights and trade secrets associated with the original design. Clean room design is useful as a defense against copyright and trade secret infringement because it relies on independent invention.

Comment: Re:IBM PC was an open platform (Score 1) 175

by MobileTatsu-NJG (#49488829) Attached to: Cyanogen Partners With Microsoft To Replace Google Apps

From the same link:

The success of the IBM computer led other companies to develop IBM Compatibles, which in turn led to branding like diskettes being advertised as "IBM format". An IBM PC clone could be built with off-the-shelf parts, but the BIOS required some reverse-engineering. Companies like Compaq, Phoenix Software Associates, American Megatrends, Award, and others achieved fully functional versions of the BIOS, allowing companies like DELL, Gateway and HP to manufacture PCs that worked like IBM's product. The IBM PC became the industry standard.

Using off-the-shelf parts is not the same as being open.

Comment: For a smartphone a TOF camera could be more suited (Score 2) 62

For a smartphones, I'd rather expect so-called "time of flight" cameras to catch-up before LIDARs. Basically, you have an array of LEDs which illuminate the scene using sine or square wave intensity modulation. The imager works at a high framerate (or uses other windowing techniques) to extract the phase shift in each pixel, which gives you 2D ranging information. Of course, there is still the problem of phase unwrapping.
So in this kind of system, you trade off dynamic range for accuracy and cost. As most measurements with smartphones will probably be performed at short distance, this system seems more suitable than regular LIDARs.

When someone says "I want a programming language in which I need only say what I wish done," give him a lollipop.

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