JPS5626263A - Detecting system for extreme value of analog signal - Google Patents

Detecting system for extreme value of analog signal

Info

Publication number
JPS5626263A
JPS5626263A JP10262479A JP10262479A JPS5626263A JP S5626263 A JPS5626263 A JP S5626263A JP 10262479 A JP10262479 A JP 10262479A JP 10262479 A JP10262479 A JP 10262479A JP S5626263 A JPS5626263 A JP S5626263A
Authority
JP
Japan
Prior art keywords
signal
supplied
circuit
output
case
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
Application number
JP10262479A
Other languages
Japanese (ja)
Inventor
Yutaka Suzuki
Yoshihiro Jinbo
Shuji Yoshino
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10262479A priority Critical patent/JPS5626263A/en
Publication of JPS5626263A publication Critical patent/JPS5626263A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Image Signal Circuits (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Image Input (AREA)

Abstract

PURPOSE: To extract the middle point of the black signal in the picture signal with no error, by deciding the differential value from the sample row of analog signals and then detecting the significant extreme value point.
CONSTITUTION: The analog signal is supplied through input terminal 1 and then sampled through sampling circuit 2. This sampling output is supplied to delaying circuit 3 and subtractor 4, and the differential signal of the sample value is delivered from subtractor 4. This output is supplied to amplitude comparators 5 and 6 as well as to polarity decider 7. Comparator 5 delivers D=1 or 0 in case the input signal is less or more than threshold level -Δ1; while comparator 6 delivers U=1 or 0 in case the input signal is more or less than threshold level Δ2 each. The outputs of comparators 5 and 6 are supplied to shift registers 8 and 9 each, and the output of the shift register is given the logic product by AND circuit 12 and via OR circuits 10 and 11. On the other hand, the signal supplied to decider 7 is converted into 1 and 0 according to its plus or minus each. Minimum point detecting circuit 14 detects the minimum point based on the data of shift register 13 in case the output of circuit 12 is 1.
COPYRIGHT: (C)1981,JPO&Japio
JP10262479A 1979-08-10 1979-08-10 Detecting system for extreme value of analog signal Pending JPS5626263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10262479A JPS5626263A (en) 1979-08-10 1979-08-10 Detecting system for extreme value of analog signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10262479A JPS5626263A (en) 1979-08-10 1979-08-10 Detecting system for extreme value of analog signal

Publications (1)

Publication Number Publication Date
JPS5626263A true JPS5626263A (en) 1981-03-13

Family

ID=14332388

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10262479A Pending JPS5626263A (en) 1979-08-10 1979-08-10 Detecting system for extreme value of analog signal

Country Status (1)

Country Link
JP (1) JPS5626263A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62173455A (en) * 1986-01-22 1987-07-30 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー Photosensitive composition containing microgel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62173455A (en) * 1986-01-22 1987-07-30 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー Photosensitive composition containing microgel

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