JPS54152952A - A-d converter - Google Patents
A-d converterInfo
- Publication number
- JPS54152952A JPS54152952A JP6251978A JP6251978A JPS54152952A JP S54152952 A JPS54152952 A JP S54152952A JP 6251978 A JP6251978 A JP 6251978A JP 6251978 A JP6251978 A JP 6251978A JP S54152952 A JPS54152952 A JP S54152952A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- converter
- circuit
- analog
- comparator circuit
- 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 improve reliability by making it possible to detect easily an error signal in an A/D converter by providing the A/D converter, a D/A converter reciving its output, a delay circuit, and a comparator circuit.
CONSTITUTION: An analog input signal applied to terminal 1 is converted into a digital signal by A/D converter 5 and the signal is processed by date processor 17, whose output is supplied to terminal 18. To detect an error signal, the digital signals of converter 5 is reconverted by D/A converter into an analog signal, which is inputted to comparator circuit 21. After being delayed by delayed circuit 19 as much as the time equivalent to the sum of the conversion intervals of time of converters 5 and 20, the input analog signals is inputted to comparator circuit 21, where it is compared with the output signal of D/A 20. When the difference between both the analog signals compared by circuit 21 is above a fixed value, a detection signals is generated and outputted to device 17. On receiving the detection signal, device 17 outputs a signal which corresponds to the received signal, thereby making it possible to detect easily the occurrence of an error signal.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6251978A JPS54152952A (en) | 1978-05-24 | 1978-05-24 | A-d converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6251978A JPS54152952A (en) | 1978-05-24 | 1978-05-24 | A-d converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54152952A true JPS54152952A (en) | 1979-12-01 |
Family
ID=13202504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6251978A Pending JPS54152952A (en) | 1978-05-24 | 1978-05-24 | A-d converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54152952A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62286322A (en) * | 1986-06-05 | 1987-12-12 | Oki Electric Ind Co Ltd | Data error detecting system by adpcm coding |
-
1978
- 1978-05-24 JP JP6251978A patent/JPS54152952A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62286322A (en) * | 1986-06-05 | 1987-12-12 | Oki Electric Ind Co Ltd | Data error detecting system by adpcm coding |
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