JPS57129022A - Analog-to-digital converter - Google Patents
Analog-to-digital converterInfo
- Publication number
- JPS57129022A JPS57129022A JP1461481A JP1461481A JPS57129022A JP S57129022 A JPS57129022 A JP S57129022A JP 1461481 A JP1461481 A JP 1461481A JP 1461481 A JP1461481 A JP 1461481A JP S57129022 A JPS57129022 A JP S57129022A
- Authority
- JP
- Japan
- Prior art keywords
- sampling
- data
- register
- random noise
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/20—Increasing resolution using an n bit system to obtain n + m bits
- H03M1/201—Increasing resolution using an n bit system to obtain n + m bits by dithering
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To raise apparent resolution, by superposing a random noise on an input analog signal, executing its A/D conversion, and accumulating data obtained by sampling this output by a prescribed number of times. CONSTITUTION:A random noise from a random noise generator 1 is superposed on an input analog signal A, and it is applied to an A/D converter 3 of (m) bits. Subsequently, in accordance with a converting command pulse Ps from a timing circuit 2, sampling is executed by a prescribed number of times N in the sampling period in case when the A/D converter 3 is usually used. Subsequently, sampling data D/A of said N times portion are accumulated by an adder 4 and a register 5, and by a strobe signal Pb from the timing circuit 2, an output DB of the register 5 is inputted to a register 6 and is stored. According to such constitution, each sampling data becomes each different value, therefore, a data DB which has accumulated said each data becomes data having resolution of (n) (n>m) bits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1461481A JPS57129022A (en) | 1981-02-03 | 1981-02-03 | Analog-to-digital converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1461481A JPS57129022A (en) | 1981-02-03 | 1981-02-03 | Analog-to-digital converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57129022A true JPS57129022A (en) | 1982-08-10 |
Family
ID=11866075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1461481A Pending JPS57129022A (en) | 1981-02-03 | 1981-02-03 | Analog-to-digital converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57129022A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6411470A (en) * | 1987-06-15 | 1989-01-17 | Xerox Corp | Method of calibrating photosensitive element in scanning array |
| JPH0228713A (en) * | 1988-04-26 | 1990-01-30 | Mitsubishi Electric Corp | Device and method for acquiring signal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5054277A (en) * | 1973-05-14 | 1975-05-13 | ||
| JPS55141323A (en) * | 1979-04-19 | 1980-11-05 | Nippon Steel Corp | Edge forming method in manufacturing electric resistance welded steel pipe |
| JPS567521A (en) * | 1979-07-02 | 1981-01-26 | Kenkichi Tsukamoto | Ad conversion system |
-
1981
- 1981-02-03 JP JP1461481A patent/JPS57129022A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5054277A (en) * | 1973-05-14 | 1975-05-13 | ||
| JPS55141323A (en) * | 1979-04-19 | 1980-11-05 | Nippon Steel Corp | Edge forming method in manufacturing electric resistance welded steel pipe |
| JPS567521A (en) * | 1979-07-02 | 1981-01-26 | Kenkichi Tsukamoto | Ad conversion system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6411470A (en) * | 1987-06-15 | 1989-01-17 | Xerox Corp | Method of calibrating photosensitive element in scanning array |
| JPH0228713A (en) * | 1988-04-26 | 1990-01-30 | Mitsubishi Electric Corp | Device and method for acquiring signal |
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