JPS5461453A - Analog-digital conversion circuit - Google Patents
Analog-digital conversion circuitInfo
- Publication number
- JPS5461453A JPS5461453A JP12759977A JP12759977A JPS5461453A JP S5461453 A JPS5461453 A JP S5461453A JP 12759977 A JP12759977 A JP 12759977A JP 12759977 A JP12759977 A JP 12759977A JP S5461453 A JPS5461453 A JP S5461453A
- Authority
- JP
- Japan
- Prior art keywords
- input analog
- level
- analog signal
- conversion circuit
- analog
- 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
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE: To establish the A/D conversion circuit having high resolution, by quantizing the input analog signal with the addition of variable reference level suitable for the input analog signal level to the A/D conversion circuit.
CONSTITUTION: The refernce level generating circuits 2 and 3 are set so that the reference level 2 can be taken as a maximum ualue and the reference level 3 can be a minimum value, and input analog signal from the terminal 1 is quantized via the comparator 4 and the logical circuit 6. The quantized output 12 obtained is received with the input analog level judging circuit 9, cauusing the reference levels 2,3 suitable for the range of the input analog signal level. The quantized output 14 is delivered by quantizing the input analog signal with the reference levels 2 and 3 and by opening the output gate 10 with the timing signal 11
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12759977A JPS5461453A (en) | 1977-10-26 | 1977-10-26 | Analog-digital conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12759977A JPS5461453A (en) | 1977-10-26 | 1977-10-26 | Analog-digital conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5461453A true JPS5461453A (en) | 1979-05-17 |
Family
ID=14964061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12759977A Pending JPS5461453A (en) | 1977-10-26 | 1977-10-26 | Analog-digital conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5461453A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592431A (en) * | 1982-06-28 | 1984-01-09 | Hitachi Ltd | analog to digital converter |
| JPS5933930A (en) * | 1982-08-19 | 1984-02-24 | Hitachi Ltd | Reference voltage generation circuit for A/D conversion |
| JPS59104826A (en) * | 1982-12-07 | 1984-06-16 | Sony Corp | Analog-digital converter |
| JPS59158124A (en) * | 1983-02-27 | 1984-09-07 | Casio Comput Co Ltd | Voice data quantization system |
| JPS61136377A (en) * | 1984-12-06 | 1986-06-24 | Ricoh Co Ltd | Scanning device |
| JPS61142823A (en) * | 1984-12-17 | 1986-06-30 | Tokyo Keiki Co Ltd | Signal converting system |
| JPS63310218A (en) * | 1987-05-26 | 1988-12-19 | アメリカン テレフォン アンド テレグラフ カムパニー | Analog-digital converter and method of analog-digital conversion |
| USRE33739E (en) * | 1983-02-27 | 1991-11-12 | Casio Computer Co., Ltd. | Electronic musical instrument |
-
1977
- 1977-10-26 JP JP12759977A patent/JPS5461453A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592431A (en) * | 1982-06-28 | 1984-01-09 | Hitachi Ltd | analog to digital converter |
| JPS5933930A (en) * | 1982-08-19 | 1984-02-24 | Hitachi Ltd | Reference voltage generation circuit for A/D conversion |
| JPS59104826A (en) * | 1982-12-07 | 1984-06-16 | Sony Corp | Analog-digital converter |
| JPH0534855B2 (en) * | 1982-12-07 | 1993-05-25 | Sony Corp | |
| JPS59158124A (en) * | 1983-02-27 | 1984-09-07 | Casio Comput Co Ltd | Voice data quantization system |
| USRE33739E (en) * | 1983-02-27 | 1991-11-12 | Casio Computer Co., Ltd. | Electronic musical instrument |
| JPH0456494B2 (en) * | 1983-02-27 | 1992-09-08 | Casio Computer Co Ltd | |
| JPS61136377A (en) * | 1984-12-06 | 1986-06-24 | Ricoh Co Ltd | Scanning device |
| JPS61142823A (en) * | 1984-12-17 | 1986-06-30 | Tokyo Keiki Co Ltd | Signal converting system |
| JPS63310218A (en) * | 1987-05-26 | 1988-12-19 | アメリカン テレフォン アンド テレグラフ カムパニー | Analog-digital converter and method of analog-digital conversion |
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