[AccessD] OT: Sony Digicam API

I bought a Sony digicam for Mothers day and it has a cool little program
that can operate the camera over the USB port, moving back and forth in the
tape.  The camera itself can label segments on the tape, delete labeled
segments etc.  I was wondering if there is an API for programming the video
camera by sending "commands" over the USB port.  It seems like it must
exist, but I can't find any such thing.  Has anyone ever tried something
like this?

John W. Colby
www.colbyconsulting.com