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- Newsgroups: sci.crypt
- Path: sparky!uunet!psinntp!panix!oppedahl
- From: oppedahl@panix.com (Carl Oppedahl)
- Subject: Re: Any way to *CREATE* Vcr+ (VCR PLUS) codes??? (please read)
- Message-ID: <C0F4nF.7Eu@panix.com>
- Keywords: VCR+ patent
- Organization: PANIX Public Access Unix, NYC
- References: <1iaa91INNhgr@agate.berkeley.edu> <1993Jan04.223520.29065@rchland.ibm.com> <a_rubin.726253952@dn66> <1993Jan5.191138.16420@netcom.com>
- Date: Wed, 6 Jan 1993 05:59:39 GMT
- Lines: 30
-
- In <1993Jan5.191138.16420@netcom.com> strnlght@netcom.com (David Sternlight) writes:
-
-
- >As I understand things from my conversations with the inventor of the
- >VCR+ ... [stuff deleted]
- >they provide the program to the stations on very stringent security
- >terms, to compute the codes. That was my info as of six months
- >ago--it may have changed--dunno. Back then, I noticed that two
- >sources of published codes, the L.A. Times and TV guide occasionally
- >had different codes for the same program, which suggests other
- >than a central source. (They weren't typos, and both worked.)
-
- I trust that readers of this group have no trouble figuring out why
- this would happen -- right?
-
- The VCR+ people provide programs to the LA Times, and to TV Guide,
- that are not identical. Sure the codes work the same from both versions
- of the program, but the difference in what is printed in the guide
- makes it possible for the VCR+ people to figure out _which_ copy
- of the program was used to create a given set of plus codes.
- That way if, say, LA Times started selling codes to TV Guide, or to
- someone else, the VCR+ people would be able to blame the LA Times.
- We intellectual property lawyers call that a "spike".
-
-
- --
- Carl Oppedahl AA2KW (intellectual property lawyer)
- 30 Rockefeller Plaza
- New York, NY 10112-0228
- voice 212-408-2578 fax 212-765-2519
-