When cinema-goers settle down to watch a feature film, this is always preceded by trailers of forthcoming attractions and advertisements. What they probably don't realise is that each such commercial presentation is carefully worked out to be relevant to the target audience and is changed weekly at each screen and each cinema throughout the UK. This massive logistical task is the responsibility of one company based in Slough - Bucks Laboratories - and the special purpose machines for the editing task, designed and built by the company, all feature intelligent AC drives from Emerson Control Techniques.
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