JPS55151820A - Analog-digital converter - Google Patents
Analog-digital converterInfo
- Publication number
- JPS55151820A JPS55151820A JP5982579A JP5982579A JPS55151820A JP S55151820 A JPS55151820 A JP S55151820A JP 5982579 A JP5982579 A JP 5982579A JP 5982579 A JP5982579 A JP 5982579A JP S55151820 A JPS55151820 A JP S55151820A
- Authority
- JP
- Japan
- Prior art keywords
- exponent
- output
- conversion
- bits
- mantissa
- 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
- H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To increase the dynamic range in the structure of a small number of bits and then reduce greatly the time required for the conversion, by separating the bits after conversion into the mantissa and exponent parts and then showing the digital value in the form of the exponent square of (mantissa X 2). CONSTITUTION:Variable amplifier 2 is controlled to the amplification factor corresponding to the exponent to be set, and then amplifies the input signal. The output of amplifier 2 is compared 5 with the reference level, and down-counter 4 sets the optimum exponent in accordance with the above comparison result. In this case, the output of amplifier 2 is converted into the digital signal through A/D converting circuit 1, and then the output of circuit 1 is used for the mantissa part and combined with the exponent to obtain the digital conversion output. Thus the dynamic range can be increased in the structure of a small number of bits, and then the time required for the conversion can be reduced greatly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5982579A JPS55151820A (en) | 1979-05-16 | 1979-05-16 | Analog-digital converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5982579A JPS55151820A (en) | 1979-05-16 | 1979-05-16 | Analog-digital converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55151820A true JPS55151820A (en) | 1980-11-26 |
Family
ID=13124381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5982579A Pending JPS55151820A (en) | 1979-05-16 | 1979-05-16 | Analog-digital converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55151820A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920153A (en) * | 1982-07-27 | 1984-02-01 | 横河電機株式会社 | Current measuring apparatus |
| JPS61230428A (en) * | 1985-04-03 | 1986-10-14 | Pioneer Electronic Corp | Digital signal processing circuit |
| JPS63174429A (en) * | 1987-01-13 | 1988-07-18 | Nec Corp | Floating point type analog/digital converter |
| JPH01109923A (en) * | 1987-10-23 | 1989-04-26 | Kyowa Electron Instr Co Ltd | Quantization error suppressing device in measuring instrument |
-
1979
- 1979-05-16 JP JP5982579A patent/JPS55151820A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920153A (en) * | 1982-07-27 | 1984-02-01 | 横河電機株式会社 | Current measuring apparatus |
| JPS61230428A (en) * | 1985-04-03 | 1986-10-14 | Pioneer Electronic Corp | Digital signal processing circuit |
| JPS63174429A (en) * | 1987-01-13 | 1988-07-18 | Nec Corp | Floating point type analog/digital converter |
| JPH01109923A (en) * | 1987-10-23 | 1989-04-26 | Kyowa Electron Instr Co Ltd | Quantization error suppressing device in measuring instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5410813A (en) | Tester for electronic controller of automobile | |
| JPS5442969A (en) | Analog-digital converter | |
| JPS55100740A (en) | Analog-to-digital converter | |
| JPS55151820A (en) | Analog-digital converter | |
| JPS55110428A (en) | Analog signal input unit | |
| JPS5634225A (en) | Analogue-digital conversion unit | |
| ES472202A1 (en) | Reversible analog to digital converter with high precision | |
| JPS5758414A (en) | Analog-to-digital conversion circuit providing agc function | |
| JPS5461453A (en) | Analog-digital conversion circuit | |
| JPS5595816A (en) | Measurement value processor for engine control sensor | |
| JPS5348452A (en) | Coder | |
| JPS568922A (en) | A-d converting circuit | |
| JPS5679509A (en) | Automatic gain control circuit | |
| GB2005501A (en) | Analogue to digital conversion system | |
| JPS5573134A (en) | Analog/digital converter with check function | |
| JPS56125115A (en) | Analog and digital converter | |
| JPS5582539A (en) | Non-linear ad conversion circuit | |
| JPS5455111A (en) | Digital agc system | |
| JPS5455110A (en) | Digital agc system | |
| JPS5725770A (en) | Analog-to-digital converting circuit of solid state scanner | |
| JPS544058A (en) | Analog to digital converter of integration type | |
| JPS5518112A (en) | Analog-digital conversion system | |
| JPS5546658A (en) | Digital phase shifter | |
| JPS5595181A (en) | Logarithmic converter | |
| JPS5489557A (en) | Stabilizing circuit for analog digital converter |