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From: hsu@eng.umd.edu (Dave "bd" Hsu)
Newsgroups: sci.electronics
Subject: Re: Need Sony Diskman CD remote control interface info
Keywords: Sony Diskman CD interface remote download track DP-250
Message-ID: <1990Feb28.232422.23271@eng.umd.edu>
Date: 28 Feb 90 23:24:22 GMT
References: <1631@gould.doc.ic.ac.uk> <3714@sage.cc.purdue.edu>
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Organization: Smurfbusters!
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In article <3714@sage.cc.purdue.edu> ssy@sage.cc.purdue.edu (Kyler Laird) writes:
>In article <1631@gould.doc.ic.ac.uk> dds@cc.ic.ac.uk (Diomidis Spinellis) writes:
>>a stereo minijack, labeled `remote'.  Does anyone know the pin assignments,
>
>Why does this matter?  Well, the turntables and cass. players usually have a
>sync. port so that the cass. will begin recording as soon as the turntable
>starts up.  There exists a high probability that this is what you have.

Not really, Kyler; you're thinking of a simple open/close remote loop
jack.  Sony uses a stereo miniplug which provides ground (barrel),
+Vcc (barrel/right), and returns a serial signal (tip/left).  The
remote receiver accessory contains only one active component, an IR
receiver and integrated FM decoder housed in a metal can.  The handheld
remote transmits the same codes used by Sony's large components.  The
receiver appears to simply send the pulse trains along to the player.

I suppose you could use the Radio Shack IR detector to copy the
remote's commands into your computer, then transmit them directly
to the player through a TTL-level annunciator, but until my copy of
the D15 schematics arrives I can only guess.  The plug-in receiver does
place a constant drain on the battery, so you should disconnect it when
you put your player away.

-dave

--
Dave Hsu	 Systems Research Center, Building 115    (301) 454 8867
hsu@eng.umd.edu  The Maryversity of Uniland, College Park, MD 20742-3311

"We plan ahead.  That way, we don't do anything right now."