JPS55158772A - Picture signal producing device - Google Patents

Picture signal producing device

Info

Publication number
JPS55158772A
JPS55158772A JP6530779A JP6530779A JPS55158772A JP S55158772 A JPS55158772 A JP S55158772A JP 6530779 A JP6530779 A JP 6530779A JP 6530779 A JP6530779 A JP 6530779A JP S55158772 A JPS55158772 A JP S55158772A
Authority
JP
Japan
Prior art keywords
pulse
signal
shift amount
circuit
picture 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
JP6530779A
Other languages
Japanese (ja)
Inventor
Yojiro Sato
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP6530779A priority Critical patent/JPS55158772A/en
Publication of JPS55158772A publication Critical patent/JPS55158772A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/401—Compensating positionally unequal response of the pick-up or reproducing head

Abstract

PURPOSE:To always secure the steady output signal for the image sensor, by giving the control to the gain of the gain control circuit of the picture signal via the control signal which corresponds to the time interval of the shift amount detection pulse. CONSTITUTION:Shift amount detection pulse Pd is delivered from shift amount detector DS every time both the original and image sensor IS shift in the secondary scanning direction and by the fixed relative shift amount, and then applied to driving circuit DC and frequency/voltage converter FVC each. Time interval Tp of pulse Pd varies according to the fluctuation of the secondary scanning. And converter FVC produces DC voltage Sd featuring the value corresponding to the frequency of pulse Pd to apply it to inverter INV. Thus the polarity of voltage Sd is inverted, and gain control signal Sc is applied to gain control circuit Gc. On the other hand, pulse Pd gives the control to circuit DC and then drives sensor IS. Sensor IS starts the main scanning with every position of the producing time of pulse Pd, and then produces picture signal Sa to apply it to reading amplifier A. Amplifier A amplifies the signal to supply it to circuit Gc. Thus the picture signal free from the fluctuation of the signal level can be delivered.
JP6530779A 1979-05-26 1979-05-26 Picture signal producing device Pending JPS55158772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6530779A JPS55158772A (en) 1979-05-26 1979-05-26 Picture signal producing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6530779A JPS55158772A (en) 1979-05-26 1979-05-26 Picture signal producing device

Publications (1)

Publication Number Publication Date
JPS55158772A true JPS55158772A (en) 1980-12-10

Family

ID=13283113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6530779A Pending JPS55158772A (en) 1979-05-26 1979-05-26 Picture signal producing device

Country Status (1)

Country Link
JP (1) JPS55158772A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61121651A (en) * 1984-11-19 1986-06-09 Canon Inc Picture reader
JPS62186556U (en) * 1986-05-15 1987-11-27
JPH08152116A (en) * 1994-11-29 1996-06-11 Asahi Netsu Kiko:Kk Incinerating method of incinerator provided with ejection grate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61121651A (en) * 1984-11-19 1986-06-09 Canon Inc Picture reader
JPS62186556U (en) * 1986-05-15 1987-11-27
JPH08152116A (en) * 1994-11-29 1996-06-11 Asahi Netsu Kiko:Kk Incinerating method of incinerator provided with ejection grate

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