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- From: ptrei@bistromath.mitre.org (Peter Trei)
- Subject: Re: Any way to *CREATE* Vcr+ (VCR PLUS) codes??? (please read)
- Message-ID: <1993Jan6.193020.9974@linus.mitre.org>
- Sender: news@linus.mitre.org (NONUSER)
- Nntp-Posting-Host: bistromath.mitre.org
- Organization: The MITRE Corporation
- References: <1iaa91INNhgr@agate.berkeley.edu> <1993Jan5.191138.16420@netcom.com> <29287@oasys.dt.navy.mil>
- Date: Wed, 6 Jan 1993 19:30:20 GMT
- Lines: 61
-
- In article <29287@oasys.dt.navy.mil> curt@kcwc.com (Curt Welch) writes:
- >In sci.crypt, strnlght@netcom.com (David Sternlight) writes:
- >>Finally, there seem to be two sets of codes. One, of up to six digits,
- >>is for the standard start times (on the half-hour) and lengths (multiples
- >>of 30 minutes). A second, of more digits, seems to be for the exception
- >>cases.
-
- >I'm one of the people the "broke" the codes. It isn't that simple.
-
- >The algorithm starts out being quite simple for single digit codes, and
- >gets more and more complex for each digit you add.
- [...]
- >You don't have to collect published codes, you can just sit down with the
- >VCR Plus+ device and start punching in numbers. But there are 9,999,999
- >7 digit codes (and each one requires 9 button presses to test), so it can
- >take a long time to get enough numbers.
-
- >This is at least part of why we stopped working on the codes. It was
- >taking too much time.
-
- Wasn't Gemstar also threatening to sic rabid lawyers on you? Or
- did that only come later?
-
- I got one of these devices for Christmas (though I usually use a
- CP8 programmable remote, which is far more versatile, if not quite as
- user-friendly). Since some of my cable channels don't have TV Guide
- listings, I'd like to be able to generate my own codes.
-
- When I looked in the front of TVG, I found that the numbers are
- claimed to be *copyright* by Gemstar. I suspect that selling the
- numbers to TVG and other publications is another revenue stream for
- them. (Can you really copyright a number? Intel is calling it's new
- chip the "Pentium" since it can't copyright 586, any more than it
- could 286, 386, or 486).
-
- A possibly relevant note appears in John Dvorak's column in the
- Jan 12 PC Magazine. To summarize:
-
- Sega sued Accolade, which was making Sega Genesis game
- cartridges without getting licensing from Sega. This suit was settled
- in Accolade's favor with a ruling that:
-
- * Accolade could make Genesis games without asking Sega's permission.
- * Accolade could reverse engineer the Sega software needed to let the
- cartridge talk to the machine.
- * Accolade could use a Sega cartridge as a model for the reverse engineering.
-
- Dvorak says: "Who says you can't look at the code of the product
- you're reverse engineering? ... This means that software code of a
- competitor now can be examined for the purposes of reverse
- engineering."
-
- I'm not a lawyer (and neither is Dvorak), but I suspect that
- this ruling means that a lawsuit from Gemstar against someone who
- published an algorithm which produced codes with the same values as
- the VCR+ device would fail, and quickly.
-
- Peter Trei
- ptrei@Mitre.org
-
-
-