JPS5793724A - Signal shaping circuit - Google Patents

Signal shaping circuit

Info

Publication number
JPS5793724A
JPS5793724A JP16990280A JP16990280A JPS5793724A JP S5793724 A JPS5793724 A JP S5793724A JP 16990280 A JP16990280 A JP 16990280A JP 16990280 A JP16990280 A JP 16990280A JP S5793724 A JPS5793724 A JP S5793724A
Authority
JP
Japan
Prior art keywords
value
slice level
envelope
inputted
signal
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
JP16990280A
Other languages
Japanese (ja)
Inventor
Katsumi Fujiwara
Moritoshi Ando
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16990280A priority Critical patent/JPS5793724A/en
Publication of JPS5793724A publication Critical patent/JPS5793724A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
    • H03K5/082—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold

Abstract

PURPOSE:To obtain a suitable slice level, by interpolating a rapid signal level change, in determining the slice level by an envelope. CONSTITUTION:A light spot is irradiated on a printed where an electrode pattern is formed, the transmitted light is received at a photodetector 1 to obtain an electric signal corresponding to the electrode pattern. This signal is in A/D conversion and inputted to a shift register 3. Interpolation circuits 9a, 9b calculate the level value between two points based on the data of points inputted from the shift register 3 and the rate of change of the peak position of the signal. Thus, based on the envelope, a half value of the sum of each value of the envelope is calculated at a slice level circuit 10 and this calculated value is inputted to a comparators 11 as the slice level.
JP16990280A 1980-12-02 1980-12-02 Signal shaping circuit Pending JPS5793724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16990280A JPS5793724A (en) 1980-12-02 1980-12-02 Signal shaping circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16990280A JPS5793724A (en) 1980-12-02 1980-12-02 Signal shaping circuit

Publications (1)

Publication Number Publication Date
JPS5793724A true JPS5793724A (en) 1982-06-10

Family

ID=15895085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16990280A Pending JPS5793724A (en) 1980-12-02 1980-12-02 Signal shaping circuit

Country Status (1)

Country Link
JP (1) JPS5793724A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605160A1 (en) * 1986-10-01 1988-04-15 Jaeger METHOD FOR SHAPING ELECTRIC SIGNALS, PARTICULARLY SIGNALS FROM SENSORS FOR MOTOR VEHICLES, AND CIRCUIT IMPLEMENTING THE METHOD

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605160A1 (en) * 1986-10-01 1988-04-15 Jaeger METHOD FOR SHAPING ELECTRIC SIGNALS, PARTICULARLY SIGNALS FROM SENSORS FOR MOTOR VEHICLES, AND CIRCUIT IMPLEMENTING THE METHOD

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