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CD-I AUDIO / VIDEO


 

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VIDEO CARTRIDGE: 22ER9956
Version  AH# ROM Compatibility Chipset
22ER9956/20  00  5.x  Green/White  VMPEG
22ER9956/40  00  6.x  Green/White  IMPEG

Small cartridge with 120 pins connection. Feeds decoded video as a  digital  signal  into
the player.

TERMS AND ABREVIATIONS

VERSION
The version of the cartridge is indicated by the number behind the slash. An increment of
20 means a complete new version occupying a new chipset. The 22ER9143 was only used as  a
prototype cartridge for demonstrations and early authoring, since it does not contain the
extra 1 MB of main RAM. It is not sold onto the consumer market.

AH#
The AH indication is a further refinement of indicating a particular version of a /00, /20
Or /40 edition. An increased AH number does not refer to a different chipset, but usually
indicated a ROM or firmware update.

COMPATABILITY
A CDI Digital Video Cartridge is capable of showing moving MPEG video in a resolution  of
up To 384x288. This will then fill the entire screen. However, the  MPEG  video stream on
a Video-CD is only up to 352x288. This would mean that there will be small black bars  at
both sides of the screen. To accomplish for this, the cartridge was modified  to  display
slightly larger pixels when a White Book Video-CD stream was detected. Note that old car-
tridges can also play back White Book discs, but that the image does not fill the  entire
screen in this case.

CHIPSET
Indicates which MPEG decoding chipset is used. The Gate Array 3 is used to have some deco-
Ding problems, for example resulting in the display of green spots or  "ghost sprites" in
the image. Therefore, a new version of the 22ER9141 cartridge was released  (22ER9141/20).
The "I" in IMPEG stands for integrated, since the audio and video decoding chips are inte-
grated in one IC in this version.

Comment: In combination with a CD-I Player to play a Video CD(r)


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