logic@dartvax.UUCP (Logic Associates) (03/23/85)
(Don't drop out) In the 3/85 issue of Hardcopy, p. 122, there is an announcement from EECO of a device to playback a still picture and/or 10 seconds of audio from one frame of a laser videodisk. The device (the VAC-300) has an RS-232 interface for computer-controlled frame access. They also announced a companion encoding device for the producer. The target seems to be the slide show or art-gallery-on-a-disk. .......David Marston
jayj@hpisla.UUCP (Jay Johannes) (04/04/85)
I believe that the technical details of this appeared in IEEE transactions on Consumer Electronics. I think it was about the August or September issue. I've got a copy somewhere and could probably put up some of the highlights. The article was written by an engineer at Pioneer (where else). If I remember right, there were several modes available. The one described here involved using the upper eleven teletext lines to contain compressed speech information. This would get about 2 seconds of information. The really interesting part was using it for downloadable program storage. They could also use up to two preceeding frames for data/speech storage and tie all the frames together with a common frame number. This got about 15-20 seconds of speech, but involved more complex controls circuitry. !!