Gilderfluke&Co 'Smart' Brick Animation Control System - Manual (Page 177)

- SONY LaserDisk Commands -
The Sony LaserDisk players all share a more or less common
command format. A full description of the commands can be
found in the technical publications available from Sony or your
Sony dealer. You should confirm the the usage of these com-
mands for the specific player you are using.
LaserDisks used with the Standard Smart Brick Brain must be
recorded in the CAV format. This allows up to 1/2 hour per side.
The Rack Smart Brick Brain supports both CAV and CLV format
disks. CLV disks can hold up to one hour per side. Not all players
will support the commands needed for using CLV disks in an ani-
mation control system. The player must be able to position the
disk to a frame (and pause on that frame if it is to be used in a
multiple LaserDisk installation). Many Sony players can only posi-
tion to a ‘chapter’ when playing CLV disks. They can not be used
with CLV disks.
The LaserDisk player must be configured for 9600 baud, eight
bit data, and one stop bit (4800 baud can also work in some
applications). Other data rates can be used, but lower baud
rates can’t get the data across fast enough for the Smart Brick
Brain while a show is running. Whatever the data rate used, you
must set the Smart Brick Brain, LaserDisk player, and the terminal
or computer you are using to configure the system to the same
speed. If parity is used, then you need to set the data word
length to 7 bits, and the parity to ‘odd’. If parity is used, then you
must also set the Smart Brick Brain to recognize ‘odd’ parity as
well. Connections are made as follows:
Sony LaserDisk
DB-25 SIGNAL SIGNAL FROM/TO Smart Brick Brain
2 DATA OUT - serial data in to Smart Brick Brain (GREEN)
3 DATA IN - serial data out from Brick Brain (BLACK)
7 GROUND signal ground (BLUE or WHITE)
4 to 5 RTS/CTS connect these two lines
6 to 20 DSR/DTR connect these two lines
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