-- card: 60501 from stack: in
-- bmap block id: 20700
-- flags: 0000
-- background id: 2792
-- name: question 7
----- HyperTalk script -----
on closecard
  global maploc, cardloc
  put word 1 of the short name of this card into maploc
  put word 2 of the short name of this card into cardloc
end closecard



-- part 16 (field)
-- low flags: 00
-- high flags: 0000
-- rect: left=123 top=51 right=103 bottom=512
-- title width / last selected line: 0
-- icon id / first selected line: 0 / 0
-- text alignment: 0
-- font id: 156
-- text size: 14
-- style flags: 256
-- line height: 16
-- part name: 


-- part contents for background part 9
----- text -----
Macintosh Display Card 4•8 and 8•24

-- part contents for background part 11
----- text -----
question7

-- part contents for background part 4
----- text -----
Customer Questions

-- part contents for background part 5
----- text -----

When computer-generated images are displayed on interlaced video devices such as televisions and VCRs, flicker results. Rapid transitions in color or thin (one-pixel) lines appear to flash when displayed on these devices. Convolution is a mathematical process in which the image that is displayed is averaged between lines, significantly reducing this flicker.

While previous implementations of convolution have been expensive, Apple Convolution was designed into the Macintosh Display Card 4•8 and Macintosh Display Card 8•24, thus reducing the cost of this functionality. Apple Convolution is available for interlaced video displays at up to 8 bits per pixel (256 colors).

-- part contents for card part 16
----- text -----
What is Apple Convolution?