Dear Inna,
The closest things to what you describe are these 2 items although the "optical" cart still uses a cantilever/stylus to trace the groove.
http://www.ds-audio-w.biz/?page_id=39
http://elpj.com/
It's a difficult proposition trying to read physical media without contact while compensating for warps, path irregularities and dirt.
The closest things to what you describe are these 2 items although the "optical" cart still uses a cantilever/stylus to trace the groove.
http://www.ds-audio-w.biz/?page_id=39
http://elpj.com/
It's a difficult proposition trying to read physical media without contact while compensating for warps, path irregularities and dirt.