JPS57112180A - Image pickup device - Google Patents

Image pickup device

Info

Publication number
JPS57112180A
JPS57112180A JP55189133A JP18913380A JPS57112180A JP S57112180 A JPS57112180 A JP S57112180A JP 55189133 A JP55189133 A JP 55189133A JP 18913380 A JP18913380 A JP 18913380A JP S57112180 A JPS57112180 A JP S57112180A
Authority
JP
Japan
Prior art keywords
signal
region
high pass
gain
transversal filter
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
JP55189133A
Other languages
Japanese (ja)
Inventor
Yuichiro Ito
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 JP55189133A priority Critical patent/JPS57112180A/en
Publication of JPS57112180A publication Critical patent/JPS57112180A/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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement

Abstract

PURPOSE:To prevent the contrast lowering of a minute pattern, by using devided CCDs, which constitute high pass transversal filters respectively, to control the gain. CONSTITUTION:When the signal charge is transferred in the direction of (b), a signal of a large amplitude corresponding to a region A is outputted to an output terminal 2a of a CCD2 in time series. However, a transversal filter 5a functions as a high pass filter though the space frequency is low in the region A, a low output signal is outputted. Since the space frequency is highest in a region C, a high pass transversal filter 5c outputs a high output signal. When the largest one of signals held in a sample holding circuit 7c is applied to a gain control terminal 3b of a detecting amplifier 3a through a switch S3, a small signal just under the transversal filter 5c is amplified with the highest gain.
JP55189133A 1980-12-27 1980-12-27 Image pickup device Pending JPS57112180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55189133A JPS57112180A (en) 1980-12-27 1980-12-27 Image pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55189133A JPS57112180A (en) 1980-12-27 1980-12-27 Image pickup device

Publications (1)

Publication Number Publication Date
JPS57112180A true JPS57112180A (en) 1982-07-13

Family

ID=16235952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55189133A Pending JPS57112180A (en) 1980-12-27 1980-12-27 Image pickup device

Country Status (1)

Country Link
JP (1) JPS57112180A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5652664A (en) * 1990-11-29 1997-07-29 Nikon Corporation Image sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5652664A (en) * 1990-11-29 1997-07-29 Nikon Corporation Image sensor

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