MN673794 Datasheet, PDF (20/42 Pages) Panasonic Semiconductor – LSI FOR MPEG

MN673794
Register name Address
Setnrin
003Ch[15]
SetTof
003Ch[14:13]
Set3dnr
SetMdet
003Ch[12]
003Ch[9:5]
003Ch[4:3]
SetMvVi
Ydnslp
003Ch[2]
003Dh[12:10]
Yupslp
003Dh[9:6]
Yudchg
003Dh[5:0]
Cdnslp
Cupslp
Cudchg
003Eh[12:10]
003Eh[9:6]
003Eh[5:0]
Description
Used to switch over the input into the noise reduction block.
0: Frame sync output 1: Rec656 input
Used to make through/NR setting in the noise reduction block.
0X: NR block through
10: NR OFF 11: NR ON
Used to set the recursive 3D control.
0: Frame recursive NR 1: Field recursive NR
A threshold value to disable the noise reduction of the C signal by using the Y
frame/field differential signal. The color frame/field differential signal has
narrow band range. Therefore, higher precision can be obtained in edge portions
by using the Y differential signal. If the threshold value is larger, the influence of
the differential signal of Y will be less, and the NR of the C will be enabled by
the color differential signal. If the threshold value is smaller, the NR of the C will
not be enabled when the Y differential signal is high.
Threshold value = SetMdet [6:2]×2
Example: If SetMdet is 01000, the threshold value is 16.
A width where the noise reduction of C is disabled by the frame/field differential
signal of Y.
Area to disable the noise reduction of C: Number of clocks.
00: 1 clock (The differential signal of Y is used as it is)
01: -1 to +1 clock (The differential signal of Y is widened left and right for one
clock each.)
10: -2 to +2 clock (The differential signal of Y is widened left and right for two
clocks each.)
11: -3 to +3 clock (The differential signal of Y is widened left and right for three
clocks each.)
The detected movement area is displayed dark (for evaluation).
0: Normal 1: Movement detection display
Used to make negative slope settings for a high Y frame/field differential signal
range.
If the differential signal is higher than the Yudchg value, the differential signal is
considered a movement signal. Then the amount of noise reduction will be
attenuated. Set the attenuation gain in the register.
Large value: Quickly attenuated according to the differential signals.
Small value: Slowly attenuated according to the differential signals.
(For the characteristics, refer to NR-ROM and NR characteristics.)
Used to make positive slope setting for a low Y frame/field differential signal
range.
If the positive slope setting is larger, the gain will be high to enable NR high. If
the positive slope setting is smaller, the gain will be less to enable NR low.
Gain=yupslp[3:00]/16
(For the characteristics, refer to NR-ROM and NR characteristics.)
Used to set the change point between the above ydnslp (negative slope) and the
yupslp (positive slope). If the differential signal is higher than the change point,
the differential signal is considered a movement signal. Then the amount of NR
will be attenuated.
(For the characteristics, refer to NR-ROM and NR characteristics.)
Used to set the negative slope of the maximum C frame/field differential value.
(Same as Y in characteristics.)
Used to set the positive slope of the minimum C frame/field differential value.
Gain=cupslp[3:0]/16 (Same as Y in characteristics.)
Used to set the change point between the above cdnslp (negative slope) and
cupslp (positive slope). (Same as Y in characteristics.)
Default
(Recommend-
ed value)
0
00
0
01000
01
0
010
10000
010000
010
1110
100000
SDF00032BEM
20