JPS57212876A - Picture reproducing method - Google Patents

Picture reproducing method

Info

Publication number
JPS57212876A
JPS57212876A JP56097711A JP9771181A JPS57212876A JP S57212876 A JPS57212876 A JP S57212876A JP 56097711 A JP56097711 A JP 56097711A JP 9771181 A JP9771181 A JP 9771181A JP S57212876 A JPS57212876 A JP S57212876A
Authority
JP
Japan
Prior art keywords
signal
picture
difference
dark time
circuit
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
JP56097711A
Other languages
Japanese (ja)
Inventor
Nobuo Suzuki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56097711A priority Critical patent/JPS57212876A/en
Publication of JPS57212876A publication Critical patent/JPS57212876A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
    • H04N25/63—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To prevent the degrading of picture quality due to a dark time signal component of a solid-state image sensor, by picking up both signals of a picture signal and the dark time signal from a storage medium alternately storing, and obtaining a compensation signal for the difference of both the signals. CONSTITUTION:After an objective of a low intensity of illumination is picked up with an electronic camera using a solid-state image sensor, a charge stored to each picture element is stored on a magnetic tape as a dark time signal component while a shutter is shut for a time corresponding to the photo sensing time. A magnetic tape reproducing circuit 31 picks up the picture signal and the signal is stored to a memory 33 via a gate 32. The dark time signal is picked up at the circuit 21, applied to a signal difference circuit 34 via the gate 32, the difference with the picture signal in the memory 33 is calculated at each picture element to obtain a compensation signal. This compensation signal is applied to a picture reproducing section 35 for reproduction.
JP56097711A 1981-06-24 1981-06-24 Picture reproducing method Pending JPS57212876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56097711A JPS57212876A (en) 1981-06-24 1981-06-24 Picture reproducing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56097711A JPS57212876A (en) 1981-06-24 1981-06-24 Picture reproducing method

Publications (1)

Publication Number Publication Date
JPS57212876A true JPS57212876A (en) 1982-12-27

Family

ID=14199479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56097711A Pending JPS57212876A (en) 1981-06-24 1981-06-24 Picture reproducing method

Country Status (1)

Country Link
JP (1) JPS57212876A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4614966A (en) * 1982-08-20 1986-09-30 Olympus Optical Co., Ltd. Electronic still camera for generating long time exposure by adding results of multiple short time exposures
JPS61260771A (en) * 1985-05-14 1986-11-18 Mitsui Mining & Smelting Co Ltd Background noise eliminating device
JPS6295074A (en) * 1985-10-21 1987-05-01 Mitsubishi Electric Corp Picture quality improving device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4614966A (en) * 1982-08-20 1986-09-30 Olympus Optical Co., Ltd. Electronic still camera for generating long time exposure by adding results of multiple short time exposures
JPS61260771A (en) * 1985-05-14 1986-11-18 Mitsui Mining & Smelting Co Ltd Background noise eliminating device
JPH0697783B2 (en) * 1985-05-14 1994-11-30 三井金属鉱業株式会社 Background noise removal device
JPS6295074A (en) * 1985-10-21 1987-05-01 Mitsubishi Electric Corp Picture quality improving device
JPH0374998B2 (en) * 1985-10-21 1991-11-28

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