參數(shù)資料
型號: ADNB-3082
英文描述: High-performance Optical Mouse Sensor
中文描述: 高性能的光學(xué)鼠標(biāo)傳感器
文件頁數(shù): 26/40頁
文件大?。?/td> 530K
代理商: ADNB-3082
26
SQUAL
Address: 0x05
Access: Read
Reset Value: 0x00
Data Type: Upper 8 bits of a 10-bit unsigned integer.
USAGE: SQUAL (Surface Quality) is a measure of of the number of valid* features visible by
the sensor in the current frame. Use the following formula to find the total number of valid
features.
Number of features = SQUAL register value *4
The maximum SQUAL register value is 169. Since small changes in the current frame can result
in changes in SQUAL, variations in SQUAL when looking at a surface are expected. The graph
below shows 250 sequentially acquired SQUAL values, while a sensor was moved slowly over
white paper. SQUAL is nearly equal to zero, if there is no surface below the sensor. SQUAL is
typically maximized when the navigation surface is at the optimum distance from the imaging lens
(the nominal Z-height).
Bit
7
6
5
4
3
2
1
0
Field
SQ
7
SQ
6
SQ
5
SQ
4
SQ
3
SQ
2
SQ
1
SQ
0
Figure 26. Squal values (white paper)
60
65
70
75
80
85
0
25
50
75
100
125
150
175
200
225
250
Squal Values (White Paper)
S
相關(guān)PDF資料
PDF描述
ADNS-2120 High-performance Optical Mouse Sensor
ADNS-2120-001 High-performance Optical Mouse Sensor
ADNS-2220 High-performance Optical Mouse Sensor
ADNS-2220-001 High-performance Optical Mouse Sensor
ADNS-3080 High-performance Optical Mouse Sensor
相關(guān)代理商/技術(shù)參數(shù)
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