TW429689B - Automatic sampling adjusting system - Google Patents
Automatic sampling adjusting systemInfo
- Publication number
- TW429689B TW429689B TW88116986A TW88116986A TW429689B TW 429689 B TW429689 B TW 429689B TW 88116986 A TW88116986 A TW 88116986A TW 88116986 A TW88116986 A TW 88116986A TW 429689 B TW429689 B TW 429689B
- Authority
- TW
- Taiwan
- Prior art keywords
- sampling frequency
- display mode
- value
- predetermined
- frame
- Prior art date
Links
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
The present invention discloses an automatic sampling adjusting system for quickly adjusting the sampling frequency and phase of the A/D converter during the conversion of analog image to digital image signal. The method of the adjusting system includes deciding a display mode, and setting the predetermined parameter by the display mode, and according sampling frequency and phase. The steps of counting sampling frequency consists of reading the image parameter, such as the height of the vertical frame and the breadth of the horizontal frame, and the total sum of the gray scale value of all 2 borderer points in one frame. If the height of the vertical frame is equal to the predetermined height of the vertical frame of the display mode, and the breadth of the horizontal frame is in the range of the positive/negative predetermined deviations of predetermined horizontal frame of display mode, then counts the sampling frequency by boundary value method, or, getting the sampling frequency by least absolute difference method. If the least absolute difference method does not get the sampling frequency, then checks the total sum of the gray scale value is more than a accumulation valve or not. If the gray scale value is larger than the accumulation valve value, then gets the sampling frequency by maximum calculated value method, otherwise, uses the default value of display mode sampling frequency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW88116986A TW429689B (en) | 1999-09-30 | 1999-09-30 | Automatic sampling adjusting system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW88116986A TW429689B (en) | 1999-09-30 | 1999-09-30 | Automatic sampling adjusting system |
Publications (1)
Publication Number | Publication Date |
---|---|
TW429689B true TW429689B (en) | 2001-04-11 |
Family
ID=21642469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW88116986A TW429689B (en) | 1999-09-30 | 1999-09-30 | Automatic sampling adjusting system |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW429689B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI738139B (en) * | 2019-12-04 | 2021-09-01 | 財團法人資訊工業策進會 | Device, system, and method for data acquisition |
-
1999
- 1999-09-30 TW TW88116986A patent/TW429689B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI738139B (en) * | 2019-12-04 | 2021-09-01 | 財團法人資訊工業策進會 | Device, system, and method for data acquisition |
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Legal Events
Date | Code | Title | Description |
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GD4A | Issue of patent certificate for granted invention patent | ||
MM4A | Annulment or lapse of patent due to non-payment of fees |