Information Technology Reference
In-Depth Information
Ta b l e 3
Average PSNR and disparity PSNR with conventional method and proposed method
Average of PSNR (dB)
original frame size
1920x1080
num of encoder
4
4
1
method
proposed convent. convent.
Church
29.43
29.47
29.57
Whale Show
28.15
27.85
28.41
Soccer Action
28.48
28.19
28.52
Sprinkling
26.00
25.47
26.53
Horse Race
33.40
33.30
33.41
Average
29.09
28.85
29.28
Disparity of PSNR (dB)
method
proposed convent. convent.
Church
0.74
1.61
0.80
Whale Show
2.07
5.17
1.91
Soccer Action
2.87
4.86
2.77
Sprinkling
4.71
8.66
4.15
Horse Race
0.79
1.52
0.81
Average
2.23
4.26
2.08
8
Experimental System
We developed an experimental SHR CODEC system[9] based on the system we
have just described. Its specifications are listed in Table. 4.
The encoder for this CODEC system consists of the pre-encoder unit and the
main-encoder unit shown in the photograph in Fig. 14; these units were built with the
same hardware, and only the firmware is different. Both units comply with the 1U
(44 x 482 x 437 mm) rack size, and includes an audio encoder and a multiplexer, and
each has four encoding units that use the new multiple-chip-enhanced 422P@HL
Ta b l e 4
Specifications of experimental CODEC system
Video format
1080i(60/59.94i) x 4
720p(60/59.94p) x 4
Video interface
HDSDI x 4
Stream interface
DVB-ASI x 4
Compression
MPEG-2 422P@HL MP@HL
Bit rate
60 - 160 Mbps
Bitrate control
CBR for TS
VBR for ES
Power
AC 100 - 240 V
Size(mm)
460(W) x 440(D) x 44(H) x 2
