JPS54138362A - Analog-digital conversion unit - Google Patents

Analog-digital conversion unit

Info

Publication number
JPS54138362A
JPS54138362A JP4610978A JP4610978A JPS54138362A JP S54138362 A JPS54138362 A JP S54138362A JP 4610978 A JP4610978 A JP 4610978A JP 4610978 A JP4610978 A JP 4610978A JP S54138362 A JPS54138362 A JP S54138362A
Authority
JP
Japan
Prior art keywords
voltage
integration
integrated
polarity
difference
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
Application number
JP4610978A
Other languages
Japanese (ja)
Other versions
JPS6135729B2 (en
Inventor
Eiji Masuda
Yasoji Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4610978A priority Critical patent/JPS54138362A/en
Publication of JPS54138362A publication Critical patent/JPS54138362A/en
Publication of JPS6135729B2 publication Critical patent/JPS6135729B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To offer the analog to digital conversion unit enabling the both polarity conversion and less in conversion error due to voltage fluctuation components, by eliminating the necessity of the polarity of unknown analog input voltage for discrimination in advance, with four step integration operation.
CONSTITUTION: The integration circuit 13 first integrates the difference voltage between the reference voltage VREF and the ground voltage VG, and when the integration voltage reaches the threshold voltage Vc, the difference voltage between the reference voltage VREF and the ground voltage VG is integrated for a given period. Further, the difference voltage between the unknown analog input voltage V1N and the ground voltage VG is integrated for a given period, and after that, the difference voltage between the reference voltage VREF and the ground voltage VG is integrated. After the start of this integration, the count circuit 19 counts the clock pulse CP, and when the integration voltae reaches the threshold voltage Vc, the control circuit 18 stops the output of the clock pulse CP to the count circuit 19, which output digital quantity according to the polarity of the unkown analog input voltage V1N and the value.
COPYRIGHT: (C)1979,JPO&Japio
JP4610978A 1978-04-19 1978-04-19 Analog-digital conversion unit Granted JPS54138362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4610978A JPS54138362A (en) 1978-04-19 1978-04-19 Analog-digital conversion unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4610978A JPS54138362A (en) 1978-04-19 1978-04-19 Analog-digital conversion unit

Publications (2)

Publication Number Publication Date
JPS54138362A true JPS54138362A (en) 1979-10-26
JPS6135729B2 JPS6135729B2 (en) 1986-08-14

Family

ID=12737817

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4610978A Granted JPS54138362A (en) 1978-04-19 1978-04-19 Analog-digital conversion unit

Country Status (1)

Country Link
JP (1) JPS54138362A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6455913A (en) * 1986-08-12 1989-03-02 Honeywell Inc Analog-digital signal converter
JP2008193650A (en) * 2007-01-31 2008-08-21 Hynix Semiconductor Inc Temperature information output device including analog-digital converter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1226782Y (en) * 2019-01-31 2019-06-11 Smurfit Kappa Navarra S A Fruit protector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS519674A (en) * 1974-07-08 1976-01-26 Essex International Inc Anarogu deijitaruhenkanki

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS519674A (en) * 1974-07-08 1976-01-26 Essex International Inc Anarogu deijitaruhenkanki

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6455913A (en) * 1986-08-12 1989-03-02 Honeywell Inc Analog-digital signal converter
JP2008193650A (en) * 2007-01-31 2008-08-21 Hynix Semiconductor Inc Temperature information output device including analog-digital converter

Also Published As

Publication number Publication date
JPS6135729B2 (en) 1986-08-14

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