OKI Semiconductor
ML87V2107
Video Signal Noise Reduction IC with a Built-in Frame Memory
FEDL87V2107-01
Issue Date: Sep. 16, 2005
GENERAL DESCRIPTION
The ML87V2107, which comprises a frame memory and signal processing and memory control logic circuits, can
reduce frame-recursive noise.
The motion adaptive noise reduction is performed between frames, between fields, or between lines, to reduce the
afterimage particular to 3D noise reduction as far as possible, while achieving effective noise reduction.
To perform noise reduction with afterimage suppression, the ML87V2107 is capable of space filter type noise
reduction by LPF with edge compensation.
The ML87V2107 is capable of automatic setting of optimum noise reduction by measuring noise of input data.
The ML87V2107 has a frame buffer output function that uses frame memory. This function enables data output by
a Sync. signal generated from the internal Sync. signal generator or by an externally input Sync. signal.
Through the use of this frame buffer output function, the following operations are enabled: External synchronous
frame buffer output, input vertical synchronous frame buffer output, asynchronous frame buffer output, and
frame-trigger-synchronous frame buffer output.
The use of these frame buffer output features allows a time base corrector and a frame synchronizer function to be
configured.
FEATURES
•
Built-in memory:
Frame memory
×
1 unit
•
Maximum input and output operating frequencies (16 bit/8 bit, ITU-R BT.656):
14.75/29.5 MHz
•
Power supply voltage:
3.3 V
±
0.3 V
•
Input data format (YCbCr 4:2:2):
YCbCr (8 bit (Y) + 8 bit (CbCr) + Sync.):
16-bit input mode
YCbCr (8 bit (YCbCr) + Sync.):
8-bit input mode
ITU-R BT.656 (8 bit (YCbCr)):
ITU-R BT.656 input mode
•
Output data format (YcbCr 4:2:2):
YCbCr (8 bit (Y) + 8 bit (CbCr) + Sync.):
16-bit output mode
YCbCr (8 bit (YCbCr) + Sync.):
8-bit output mode
ITU-R BT.656 (8 bit (YCbCr)):
ITU-R BT.656 output mode
•
Serial bus:
I
2
C-bus interface: (Standard mode: 100 kbps/Fast mode: 400 kbps)
•
Internal memory controller:
Compatible with 625/50 Hz 2:1, 525/60 Hz 2:1
Compatible horizontal effective pixels: 640 pixels (525-line mode only), 720 pixels and 768 pixels
•
Sync. generator function:
625/50Hz 2:1 and 525/60Hz 2:1 Sync. signal generation possible
Number of valid horizontal pixels that are supported: 640 pixels (in 525-line mode only), 720 pixels and 768
pixels
•
Frame recursive adaptation type (3D) noise reduction function:
Noise detection/noise subtraction type (horizontal direction motion compensation)
Supports automatic setting of a noise level reduction
•
Space filter (2D) noise reduction function:
3-line edge compensation LPF mode
Supports automatic ON/OFF setting
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