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CIF

(1) See also CIFS and RAW image format.

(2) (Cells In Frames) ATM cells in Ethernet frames. See Cells in Frames.

(3) (Common Intermediate Format) An ITU H.261 standard for videoconferencing camera resolutions. CIF is also used to specify surveillance cameras.


 Common
 Intermediate            Resolution
 Format                 NTSC      PAL

 CIF   (Full CIF)     352x240   352x288
 QCIF  (Quarter CIF)  176x140   176x144
 SQCIF (Sub Quarter)            128x96
 2CIF  (2 x CIF)      704x240   704x288
 4CIF  (4 x CIF)      704x480   704x576
 16CIF (16 x CIF)    1408x960  1408x1152



(4) (Common Image Format) A standard frame size for digital video.


    Common
    Image      Screen
    Format     Size     Resolution

    VGA        Full     640x480
    1/4 VGA    1/4      320x240
    1/16 VGA   1/16     160x120
    D1 (Sony)  Full     720x480 (NTSC)
                        720x576 (PAL)





Cells in Frames

A networking technology developed at Cornell University that embeds ATM cells in Ethernet and Token Ring frames. Cells in Frames (CIF) differs from LAN Emulation (see LANE). It is implemented by replacing the Ethernet hub with a switch or multiplexor known as a CIF Attachment Device (CIF-AD), and CIF drivers are used in the client stations.



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