zmact61@doc.ic.ac.uk (D Spinellis) (02/26/90)
I am planning to build an interface to program a Sony Diskman CD player from a computer. The idea is to store track sequences for various CD's on disk and download them to the player. The player (model DP-250, probably sold under some other name in the States) has an input jack that looks like a stereo minijack, labeled `remote'. Does anyone know the pin assignments, electrical characteristics and the protocol for the interface? Information on interfaces of other models could be useful, since many share the same logic. Post or mail replies, I will summarize. When I finish I will post schematics and software. Diomidis -- Diomidis Spinellis Internet: dds@cc.ic.ac.uk Department of Computing UUCP: ...!ukc!iccc!dds Imperial College JANET: dds@uk.ac.ic.cc London SW7 2BZ #include "/dev/tty"
ssy@sage.cc.purdue.edu (Kyler Laird) (02/27/90)
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, I'm working on interfaces for the car and home versions of the DiskJockey, but I do have a Sony linear tracking, linear skating turntable also. 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. I suggest that you order the schematics from Sony. I was surprised at how easy obtaining the ones for my 10-Disc players was. ------------------------------------------------------------------------- Kyler Laird I'm the NRA ky@en.ecn.purdue.edu
whoffman@jato.Jpl.Nasa.Gov (Walt Hoffman) (02/28/90)
In article <1631@gould.doc.ic.ac.uk> dds@cc.ic.ac.uk (Diomidis Spinellis) writes: >I am planning to build an interface to program a Sony Diskman CD player >from a computer. The idea is to store track sequences for various CD's >on disk and download them to the player. The player (model DP-250, probably >sold under some other name in the States) has an input jack that looks like >a stereo minijack, labeled `remote'. Does anyone know the pin assignments, >electrical characteristics and the protocol for the interface? Information >on interfaces of other models could be useful, since many share the same logic. I am also interested in that information. I have a Sony D-160 portable for the car with the same jack for remote. It is an available option for Sony players and sells in Los Angeles for $45. It has a small stereo jack with an IR LED mounted at 90 degrees. A small handheld remote is included. I don't know if there is additional circuitry inside the unit you plug into the player. Sony does like surface-mount technology so anything is possible. I have a Sony receiver already and plan to use that for control.
hsu@eng.umd.edu (Dave "bd" Hsu) (03/01/90)
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."