home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: rec.video
- Path: sparky!uunet!mcsun!fuug!anon
- From: an7689@anon.penet.fi
- Subject: VCR Plus+ PlusCodes: 2 of 3
- Message-ID: <1993Jan23.133524.2652@fuug.fi>
- Sender: anon@fuug.fi (The Anon Administrator)
- Organization: Anonymous contact service
- X-Anonymously-To: rec.video
- Date: Sat, 23 Jan 1993 12:24:00 GMT
- Lines: 102
-
- VCRCode, Version 1.00
- A Program for IBM-PC Compatibles
- to Generate 1 to 6 Digit VCR Plus+ PlusCodes
-
- This program is brought to you by
-
- The Good Doctor
-
- It is based on information appearing in Shirriff K,
- Welch C, Kinsman A, "Decoding a VCR Controller Code,"
- Cryptologia, 16 (#3, July 1992), 227-234.
-
- VCR Plus+ and PlusCode are trademarks of the Gemstar
- Development Corporation.
-
- The Program VCRCode
-
- VCRCode generates 1 to 6 digit VCR Plus+ PlusCodes. A
- quick check of the TV listings will show that this covers the
- vast majority of codes that anyone is likely to need. The 7
- and 8 digit codes occur primarily with odd starting times. A
- simple work around is to pick an earlier starting time on the
- hour or half hour and adjust the duration accordingly. The
- VCR Plus+ itself can be used to add multiples of 15 minutes to
- any program duration by pressing the ADD TIME button under the
- VCR Plus+ cover (1 press for each 15 minutes).
-
- In some locations, the programs of certain UHF stations
- routinely end up with longer codes. The VCR Plus+ includes a
- channel mapping capability that can be used to overcome this
- difficulty. Suppose local channel 67's programs often have
- longer codes and channel 3 is unused. Use the VCR Plus+ to
- map channel 3 to 67 (or, more properly, the channel assigned
- by the VCR Plus+ to over-the-air broadcast channel 67). Then
- use VCRCode to generate the appropriate PlusCode for channel
- 3. This will not affect your ability to use codes printed in
- local listings since channel 67 still maps to itself.
-
- Why was VCRCode written? For three reasons: (1) The
- VCR Plus+ will not accept codes for shows after their air
- date. Thus, an old PlusCode can't be used to initiate weekly
- taping. (2) The ease of locating a TV listing decreases with
- the need to obtain a PlusCode. Computers, for the moment, are
- less mobile and tend to stay put. (3) Not all TV listings
- contain all PlusCodes.
-
-
- Using VCRCode
-
- Enter VCRCode at the DOS prompt and then follow VCRCode's
- prompts. The starting date (mm/dd/yy) must be entered with
- slashes interspaced. The starting time (hh:00|30 a|p) is more
- flexible than the prompt suggests. If minutes are omitted
- they are assumed to be 00. A hyphen or a space may be used in
- place of the colon. There need not be a space before the
- am|pm indicator, which may be typed in upper or lower case.
- For example, '7:00 p' could be be entered as '7 00P' or '7p'.
-
- Press Enter at the starting date prompt to end the
- program.
-
-
- The File CHANNEL.MAP
-
- When the VCR Plus+ is used with cable or when there are
- many station in a broadcast area, the channel number assigned
- by VCR Plus+ may be different from the cable channel or over-
- the-air channel number. When you set up your VCR Plus+, you
- went through Step 4 which established the mapping between
- channel numbers. The file CHANNEL.MAP makes it possible to
- establish similar mappings so that over-the-air or cable
- channel numbers can be used instead of the VCR Plus+ assigned
- channel numbers in VCRCode.
-
- CHANNEL.MAP is an ASCII file created by using a text
- editor or word processor that can save ASCII files. The EDIT
- program in DOS 5.0 is perfect for the job. Even EDLIN may be
- used. Each record contains two numbers separated by one or
- more spaces. In keeping with VCR Plus+ setup, the first
- number is the channel assigned by VCR Plus+. (See local
- listings. In TV Guide, the information may be found on the
- white page immediately before the first page of listings.)
- The second number is the over-the-air or cable channel number.
-
- For example, suppose the VCR Plus+ assigns channel 14 to
- over-the-air broadcast channel 67. Then one line of
- CHANNEL.MAP should read
- 14 67
-
- If VCRCode finds the file CHANNEL.MAP in the current
- directory, it uses the information in the file to translate
- cable channel or over-the-air broadcast channel numbers into
- VCR Plus+ assigned channel numbers. If there is no such file,
- VCRCode processes channel numbers as entered in response to
- its prompt. In the previous example, if there were no
- CHANNEL.MAP file, channel 14 should be entered to create
- PlusCodes for broadcast channel 67.
-
- -------------------------------------------------------------------------
- To find out more about the anon service, send mail to help@anon.penet.fi.
- Due to the double-blind system, any replies to this message will be anonymized,
- and an anonymous id will be allocated automatically. You have been warned.
-