Video and/or audio data reproduction system and controller therefor

摘要: A user interactive video and/or audio data reproduction system such as that using recorded on a laser readable disc is provided with control unit which, in response to associated programme and generated signals, follows pathway through selection tree results the display of images sounds manner determined by programme. The can be discrete which attachable detachable from system. configured so it functionally transparent when source absent. It thus retained attached signalling devices keypad handset connected box acts serial line circumstances. facility also for recording actions timing taken convenient use Smartcard having either RAM or ROM capacity means providing stored unit.