JPS57181227A - Analog-to-digital converter - Google Patents
Analog-to-digital converterInfo
- Publication number
- JPS57181227A JPS57181227A JP6579781A JP6579781A JPS57181227A JP S57181227 A JPS57181227 A JP S57181227A JP 6579781 A JP6579781 A JP 6579781A JP 6579781 A JP6579781 A JP 6579781A JP S57181227 A JPS57181227 A JP S57181227A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- pulse
- frequency divider
- frequency
- 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.)
- Granted
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
- H03M1/50—Analogue/digital converters with intermediate conversion to time interval
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To increase the response speed of an A/D converter, and to improve resolution by providing a frequency dividing circuit which divides the frequency of driving pulses on receiving a start signal, and then counting its output by a counting circuit. CONSTITUTION:The output QA of a 1/2 frequency divider 13 rises synchronizing with the 5th rise of a pulse P1. Therefore, the 1st-4th pulses before a system is balanced are disregarded. When the output QA of the 1/2 frequency divider 13 rises to a ''1'', a gate 4' generates the output of AND between a count pulse P2 and the output V2 of a comparator 3. The output QA of the 1/2 frequency divider 13 is inverted in synchronizing with the 10th fall of the pulse P1 and the system stops operating. A counting circuit 16 counts the output V3 of the gate 4'. An arithmetic circuit 17 receives the output of the counting circuit 16 to perform arithmetic, and then converts the result into a digital value which corresponds to a signal Ex to be measured.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6579781A JPS57181227A (en) | 1981-04-30 | 1981-04-30 | Analog-to-digital converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6579781A JPS57181227A (en) | 1981-04-30 | 1981-04-30 | Analog-to-digital converter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57181227A true JPS57181227A (en) | 1982-11-08 |
JPS6255733B2 JPS6255733B2 (en) | 1987-11-20 |
Family
ID=13297374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6579781A Granted JPS57181227A (en) | 1981-04-30 | 1981-04-30 | Analog-to-digital converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57181227A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59168239U (en) * | 1983-04-25 | 1984-11-10 | ピ−コツク魔法瓶工業株式会社 | Stainless steel vacuum double container |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55646A (en) * | 1978-06-16 | 1980-01-07 | Matsushita Electric Ind Co Ltd | Analog-digital converting device |
JPS566528A (en) * | 1979-06-28 | 1981-01-23 | Nec Corp | Signal converter |
-
1981
- 1981-04-30 JP JP6579781A patent/JPS57181227A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55646A (en) * | 1978-06-16 | 1980-01-07 | Matsushita Electric Ind Co Ltd | Analog-digital converting device |
JPS566528A (en) * | 1979-06-28 | 1981-01-23 | Nec Corp | Signal converter |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59168239U (en) * | 1983-04-25 | 1984-11-10 | ピ−コツク魔法瓶工業株式会社 | Stainless steel vacuum double container |
Also Published As
Publication number | Publication date |
---|---|
JPS6255733B2 (en) | 1987-11-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1161549A (en) | Analog to Digital Converter | |
GB1132402A (en) | Self-calibrating ramp generator | |
JPS57181227A (en) | Analog-to-digital converter | |
JPS53143378A (en) | Speed counting system | |
JPS6426164A (en) | Speed detecting device | |
JPS6420751A (en) | Buffer oscillator | |
EP0204588A3 (en) | Digital timer | |
JPS5614960A (en) | Duty ratio calculator | |
JPS5644240A (en) | Error rate supervisory circuit | |
JPS5775301A (en) | Initial state setting system of synchronizing receiver | |
JPS6449328A (en) | A/d convertor | |
JPS5426772A (en) | Operational system | |
JPS5585217A (en) | Detecting device for rotation angle of engine | |
JPS56100522A (en) | Pulse width converting device to be provided in integration type ad converter | |
JPS56157123A (en) | Waveform shaping circuit | |
JPS5432254A (en) | Non-linear analog-digital converter | |
JPS5418612A (en) | Sweep signal reproducing system | |
JPS55118232A (en) | Pulse count circuit | |
JPS5785586A (en) | Speed detecting circuit for motor | |
JPS552914A (en) | Car-speed detector | |
JPS57125874A (en) | System for time digital conversion | |
JPS55112033A (en) | A/d converter | |
JPS56168562A (en) | Digital high-speed tachometer | |
JPS57184324A (en) | Digital converter for output of differential transformer | |
JPS5637864A (en) | Final record groove detector of phonoplayer |