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- Path: sparky!uunet!dtix!oasys!kcwc.com
- From: curt@kcwc.com (Curt Welch)
- Newsgroups: sci.crypt
- Subject: Re: Any way to *CREATE* Vcr+ (VCR PLUS) codes??? (please read)
- Message-ID: <29325@oasys.dt.navy.mil>
- Date: 6 Jan 93 17:24:55 GMT
- References: <1iaa91INNhgr@agate.berkeley.edu> <1993Jan6.040019.6884@netcom.com>
- Sender: curt@oasys.dt.navy.mil
- Reply-To: curt@kcwc.com (Curt Welch)
- Organization: KCW Consulting
- Lines: 54
-
- In sci.crypt, strnlght@netcom.com (David Sternlight) writes:
- >By the way, I should have realized that one doesn't need published codes
- >to do the job--just a VCR Plus device and the time to punch in codes.
- >I'm not clear on one thing, though. The device doesn't tell you the
- >duration of the program, except to the nearest hour. How does one
- >determine that part of the coding system without using published
- >codes?
-
- The easiest way is to use published codes to get the duration. But that
- gets hard when they start using codes with 5 minute start times. If
- a movie ends at 20 minutes after the hour, does the code end there or
- did they pick a code that just ends at 25 after?
-
- BTW, I'm not sure what the finest granularity of the duration is, but I
- assume it's 5 minutes. The start times seem to have a maximum granularity
- of 5 minutes.
-
- But there is a trick you can use with the device. It shows you the
- _total_ duration of all the shows your have progammed using a bar
- graph. This is to let you know how much tape you need. Each bar is 1
- hour. If you punch in a number, and it shows 2 bars, then you know the
- duration is greater than one hour and less than or equal to two hours,
- but you don't know where it falls between there.
-
- But you can then punch in more codes, with known durations, and see
- what happens. If you add a code with a 30 minute duration, and the
- number of bars stays at 2, then you know the first number had a
- duration that is less than or equal to 90 minutes.
-
- Doing this allows you to figure out all the codes, but it's very time
- consuming.
-
- Another way to find the duration is to program your VCR Plus+ with
- a code, and then video tape the VCR Plus+ as it sends out the
- IR signals. You can't see the IR signals, but camcorders can. If
- your camcorder has an Hour/Minute/Second tape counter, then it's easy
- to calculate when the VCR Plus+ tried to stop and start your VCR. It
- adds some extra time to the beginning and end of each show, so you have
- to adjust for that, but that's easy to do by experimenting with
- known codes.
-
- >Finally, I wonder of Curt or any of his colleagues have compiled the
- >c code for the Mac?
-
- Nope, I'm not a Mac person. A good friend of mine (actually the guy that
- got me started looking at the codes in the first place) is a full time
- Mac programmer. Maybe I can talk him into putting togither a nice
- little Mac version of the program.
-
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- | Curt Welch - KCW Consulting By 1995, there will be just two kinds |
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