JPS5626263A - Detecting system for extreme value of analog signal - Google Patents
Detecting system for extreme value of analog signalInfo
- 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
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
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)
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 |
-
1979
- 1979-08-10 JP JP10262479A patent/JPS5626263A/en active Pending
Cited By (1)
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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