參數(shù)資料
型號: ADNS-3080
廠商: Avago Technologies Ltd.
英文描述: High-Performance Optical Mouse Sensor
中文描述: 高性能光學(xué)鼠標傳感器
文件頁數(shù): 26/39頁
文件大?。?/td> 655K
代理商: ADNS-3080
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-3150-001 Optical Mouse Designer’s Kit
ADNS-5020-EN Optical Mouse Sensor
ADNS-5030 Low Power Optical Mouse Sensor
ADNS-5100 Solid-State Optical Mouse Lens
ADNS-5100-001 Solid-State Optical Mouse Lens
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