Edje-2000
Real Time MPEG 2 Streaming Encoder
Version 1.3
Adtec Digital, Inc. USA
Page 20 of 20
Horizontal Luma Bandwidth (HSB)
The horizontal luminance filter provides a luma peaking/low pass filter.
The numbers are based from the SAA7114 luminance peaking/low-pass
filter.
Empirical testing indicates the HLB setting is directly related to the bit
rate.
HLB Configuration Table
Option
Recommended Data
Rates
-3 dB Point
MHz
Gain at 4 MHz
DB
0
300 K to 1 Mbs
1.75
+ 2.5 dB
Notches at 2.5 MHz
and 5.6 MHz elliptical
response
1
1 - 1.5 Mbs
1.9
- 5.0 dB
Notches at 2.8 MHz
and 5.25 MHz elliptical
response
2
1.5 - 2 Mbs
2.1
-15 dB
Notches at 3.4 MHz
and 4.8 MHz elliptical
response
3
2 - 2.5 Mbs
2.3
- 13 dB
4
2.5 - 3 Mbs
2.6
- 8 dB
5
3 - 3.5 Mbs
3.1
-5 dB
6
3.5 - 4 Mbs
3.75
- 3 dB
7
3.5 - 4 Mbs
- 2 dB
8
4 - 4.5 Mbs
0 dB
9
4.5 - 5 Mbs
+ 1.5 dB
10
+ 2.2 dB
11
+ 2.9 dB
12
+ 4.0 dB
13
+ 5.0 dB
14
+ 6.8 dB
15
+ 8.0 dB
Note: HSB can be adjusted while encoding.
Vertical Resolution (VSI)
Vertical pixel resolution. The edje-2000 provides a pixel sampling circuit
that provides macro-block (16 lines) scaling before feeding the
uncompressed digital vi deo to the encoder ASIC. Range is Full D1
NTSC, 480; PAL 576 to 196 pixels in 16 pixel increments.
Note: Video Mode affects the Vertical Resolution. Encoder must be
stopped to change.
1-8
Low Pass
9-15
Peaking