WHAT FORMAT WILL SKYS HDTV SYSTEM USE?
Sky ‘s HDTV broadcasting system and HDTV receiver will support two HDTV formats: – 720 / P / 50 (Progressively Scanned picture) – 1080 / I / 25 (Interlaced picture) Sky believes the progressively scanned picture format is better suited for the delivery and viewing of HD content on large screen, flat panel displays (mostly plasma or LCD) that are increasingly available in electrical and specialist retailers. However, Sky does accept that for some types of programming, the higher screen resolution offered by the 1080 Interlaced format may be preferable. Broadcasters planning on launching HD services on the digital satellite platform will be able to choose whether to broadcast content in 720 / P / 50 or 1080 / I / 25. Sky’s HD service will also utilise the advanced compression technology MPEG4. MPEG4 is a more efficient means of compressing the data in a TV picture. JARGON – BUSTER: BIT RATE: Bit rate is measured as “bits per second” (bps) and refers to the rate at which data is transmitt
