SAA4978 Philips, SAA4978 Datasheet - Page 7

• Manufacturer Part Number: SAA4978
• Description: Picture Improved Combined Network PICNIC
• Manufacturer: Philips

Philips Semiconductors
1995 Oct 05
handbook, full pagewidth
Monolithic integrated 16 : 9 compressor
(1) Nominal timing for a 52 s active video signal to generate a centred compressed video signal.
(2) Worst case picture position for a 52 s active video signal to generate no visible blanking between side panels and compressed video.
6.3 s
(full bypass not through the Line Memories)
panel
side
compressed video
1.5 s
HREF
Fig.3 Horizontal timing.
1.5 s
(left position)
(bypass via the Line Memories)
panel
49 s (used for compression)
side
compressed video
(centre position)
bypassed video
bypassed video
sampled video
36.75 s
52 s
7
64 s
compressed video
(right position)
panel
side
panel
side
(1)
(1)
(2)
(2)
(2)
(2)
MHA278
Preliminary specification
SAA4981