LV14005A - Method of interpolation for time-to-code digital conversion - Google Patents
Method of interpolation for time-to-code digital conversionInfo
- Publication number
- LV14005A LV14005A LVP-09-125A LV090125A LV14005A LV 14005 A LV14005 A LV 14005A LV 090125 A LV090125 A LV 090125A LV 14005 A LV14005 A LV 14005A
- Authority
- LV
- Latvia
- Prior art keywords
- interpolation
- signal
- conversion
- derivative
- time
- Prior art date
Links
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- Analogue/Digital Conversion (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Abstract
The invention is related to the field of precise time-to-digital conversion. Precision is provided by combination of sampling a counter and the interpolation - additional measurement within counter clock period. Secondary pulse with a fixed width is produced in response to an input event. The pulse is used for generating a derivative analog signal in the shape of isosceles triangle. Shaping is done by means of charging-discharging a capacitor. Derivative signal is continuously digitized by AD converter and conversion results are analyzed on the fly. When such signal is detected, digital codes of the first and the third AD conversion of the signal are memorized. Interpolation result is the difference between these codes. Derivative signal, which is used in the proposed method, has constant duration equal to three clock periods. That determines that the dead time of interpolation is constant and short. It is possible to vary the precision of interpolation by changing the AD conversion resolution, the dead time, however, remains the same.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LVP-09-125A LV14005B (en) | 2009-07-08 | 2009-07-08 | Method of interpolation for time-to-code digital conversion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LVP-09-125A LV14005B (en) | 2009-07-08 | 2009-07-08 | Method of interpolation for time-to-code digital conversion |
Publications (2)
Publication Number | Publication Date |
---|---|
LV14005A true LV14005A (en) | 2009-09-20 |
LV14005B LV14005B (en) | 2009-11-20 |
Family
ID=41694556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
LVP-09-125A LV14005B (en) | 2009-07-08 | 2009-07-08 | Method of interpolation for time-to-code digital conversion |
Country Status (1)
Country | Link |
---|---|
LV (1) | LV14005B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2443007C2 (en) * | 2010-04-09 | 2012-02-20 | Государственное образовательное учреждение высшего профессионального образования "Поволжский Государственный Университет Сервиса"(ПВГУС) | Method for time-code nanosecond recirculation transformation |
RU2446427C1 (en) * | 2010-10-01 | 2012-03-27 | Юрий Геннадьевич Абрамов | Vernier time-to-number converter |
-
2009
- 2009-07-08 LV LVP-09-125A patent/LV14005B/en unknown
Also Published As
Publication number | Publication date |
---|---|
LV14005B (en) | 2009-11-20 |
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