SDA9410
5.4.2
Preliminary Data Sheet
Input signal processing
Vertical and horizontal compression (VHCOMM/VHCOMS)
The Figure 13 shows the block diagram of the VHCOMM and VHCOMS block. The
VHCOMM and VHCOMS block are able to compress the picture in horizontal and
vertical direction continuously. The minimal step size in vertical direction is two lines, the
minimal step size in horizontal direction is four pixels. The figure below shows also the
functionality and the formula, which shows the relation between the number of input lines
(pixels) and output lines (pixels). In horizontal direction an expansion is also possible.
Panorama mode in horizontal direction will be supported.
INTVM, INTVS,
INTHM, INTHS,
DEZVM, DEZVS,
CHFILM, CHFILS
YPEAKM, CPEAKM,
YPEAKS, CPEAKS
DEZHM, DEZHS
Horizontal
compression/
expansion
Vertical
Vertical
peaking
YUVIN
YUVOUT
compression
4*APPLIPM
4*APPLIPS
4*APPLIPM
4*APPLIPS
4*APPLM
pixels (CLKM/2)
4*APPLS
pixels (CLKM/2)
pixels (CLKM/2)
2*ALPFIPM,
2*ALPFIPS
lines
2*ALPFM
2*ALPFS
lines
Number of output lines = (Number of input lines) * 512 / (512+INTVM) * 1/(DEZVM)
INTVM = 0, ..., 511;
DEZVM = {1, 2, 4, 8, 16}
INTHM = 2048, ... , 8191;
DEZHM = {1, 2, 4, 8, 16}
Number of output lines = (Number of input lines) * 2 * 2048 / (INTHM) * 1/(DEZHM)
Figure 13
Block diagram of VHCOMM/VHCOMS
32
Micronas
MICRONAS [ MICRONAS ]
