M64283FP Datasheet, PDF (20/36 Pages) Mitsubishi Electric Semiconductor – Image Sensor (Artificial Retina Chip)

Semiconductor Technical Data
MITSUBISHI
Mitsubishi Integrated Circuit <Linear IC>
M64283FP
Image Sensor (Artificial Retina Chip)
Horizontal edge
enhancement image
Two-dimensional edge
enhancement image
P +{(P-Mw)+(P-ME)} × α
P+{(P-MN)+(P-MS)+(P-ME)+(P-MW)} × α
α: Edge enhancement ratio
128(H)×128(V) 128(H)×128(V)
128(H)×128(V) 128(H)×126(V)
In the above-mentioned table, both P and M shows the intensity of output signal from the pixel. The
relation between the output pixel and valid pixel is shown below:
(Origin)
128
128
128
Number of
valid pixels -
128 x 126
Number of
valid pixels -
128 x 128
Number of
valid pixels -
128 x 126
Invalid pixel
(Vertical edge/Vertical
edge enhancement)
(Horizontal edge/Horizontal
edge enhancement)
Invalid pixel
(Two-dimensional/Two-dimensional
edge enhancements)
Figure 13. Relation between Number of Output Pixels and Number of Valid Pixels
12.8.2. N Register (1 bit)
If this register is set, the P and M registers are set for the vertical edge enhancement mode. When "H" is
written, the P and M register are set automatically to "H02" and "H05" respectively. In this case, writing to
both P and M registers is disabled.
12.8.3. VH Register (2 bit)
Using this register, users can select the image capture mode from the vertical edge, horizontal edge, or
two-dimensional edge modes. The edge enhancement mode uses the same edge configuration modes.
Parameter
N
VH₁
VH₀
0
0
0
0
0
1
1
1
0
1
1
1
Edge mode
No edge output
Horizontal edge mode
Vertical edge mode
Two-dimensional edge mode
12.8.4. E Register (4 bits)
This register sets the ratio of edge enhancement ( in the table above). The most significant bit E₃
switches between the edge enhancement and edge mode. "H" selects the edge mode and "L" selects the
20/35
Specifications and information in this document are subject to change without notice.
Ver. 2. 2. 3
07/22/1998