home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.crypt
- Path: sparky!uunet!newsgate.watson.ibm.com!yktnews!admin!wo0z!lwloen
- From: lwloen@rchland.vnet.ibm.com (Larry Loen)
- Subject: Re: Any way to *CREATE* Vcr+ (VCR PLUS) codes??? (please read)
- Sender: news@rchland.ibm.com
- Message-ID: <1993Jan04.223520.29065@rchland.ibm.com>
- Date: Mon, 04 Jan 1993 22:35:20 GMT
- Reply-To: lwloen@rchland.vnet.ibm.com
- Disclaimer: This posting represents the poster's views, not necessarily those of IBM
- References: <Bzz4J5.FHD@news.udel.edu> <1992Dec31.031552.17197@netcom.com> <C0CED1.60H@metaflow.com> <1iaa91INNhgr@agate.berkeley.edu>
- Nntp-Posting-Host: wo0z.rchland.ibm.com
- Organization: IBM Rochester
- Keywords: VCR+ patent
- Lines: 30
-
- In article <1iaa91INNhgr@agate.berkeley.edu>, shirriff@sprite.berkeley.edu (Ken Shirriff) writes:
- |> In article <C0CED1.60H@metaflow.com> rschnapp@metaflow.com (Russ Schnapp) writes:
- |> >Is it really necessary to reverse-engineer the VCR+ algorithm? I thought
- |> >that VCR+ is patented. If you can obtain the patent number, then the patent
- |> >can be retrieved. The patent _must_ disclose the method used.
- |>
- |> The patent doesn't include enough information to decode the VCR+ code.
- |> It explains how to make/decode _a_ VCR code, but not _the_ VCR+ code. That
- |> is, there are a bunch of specific details you need that aren't included. (As
- |> an analogy, the RSA patent won't help you decode a particular RSA-encoded
- |> message.)
- |>
- |> Ken Shirriff shirriff@sprite.Berkeley.EDU
-
- Has anyone thought to call their local TV station or a local newspaper that
- publishes VCR+ codes?
-
- I would imagine the manufacturer doesn't care a fig if the algorithm is
- published. They would only care to license the production of the _hardware_
- in actual VCRs. It would be in their interest, I would think, to _give away_
- the encoding algorithm to TV stations and any producer of TV listings, such
- as a newspaper. Perhaps later on, they will try & get revenue out of the
- guides, but at first they surely gave it away and still may be doing so. . .
-
- I could be wrong, but for those who care, a phone call or two ought to
- do it if my guess is correct.
-
- --
- Larry W. Loen | My Opinions are decidedly my own, so please
- | do not attribute them to my employer
-