JPS57143986A - Television camera - Google Patents

Television camera

Info

Publication number
JPS57143986A
JPS57143986A JP56029560A JP2956081A JPS57143986A JP S57143986 A JPS57143986 A JP S57143986A JP 56029560 A JP56029560 A JP 56029560A JP 2956081 A JP2956081 A JP 2956081A JP S57143986 A JPS57143986 A JP S57143986A
Authority
JP
Japan
Prior art keywords
liquid crystal
gamma
signal
crystal display
display body
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
JP56029560A
Other languages
Japanese (ja)
Inventor
Katsuyuki Ikeda
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP56029560A priority Critical patent/JPS57143986A/en
Publication of JPS57143986A publication Critical patent/JPS57143986A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To realize a lightweight, small-sized TV camera which uses a liquid crystal display body for its viewfinder, by eliminating the disadvantages that the cathode-ray tube of the liquid crystal display body has different display characteristics and a display dynamic range is narrow. CONSTITUTION:A luminance signal Y obtained by a gamma correcting circuit 523 is inputted to a gamma correcting circuit 515 which corrects the nonlinearity of liquid crystal and after correction, the resulting signal is led to a liquid crystal display body through a buffer amplifier 516. Display brightness on a cathode-ray tube is proportional to a driving voltage raised to 2.2th power, and therefore gamma=1/2.2 compressed at a high level side is used for a signal gamma-1. A pattern generating circuit 512 generates this signal gamma=1/2.2. Using this signal adjusts the circuit 515 correctly to the characteristics of the liquid crystal display body.
JP56029560A 1981-03-02 1981-03-02 Television camera Pending JPS57143986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56029560A JPS57143986A (en) 1981-03-02 1981-03-02 Television camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56029560A JPS57143986A (en) 1981-03-02 1981-03-02 Television camera

Publications (1)

Publication Number Publication Date
JPS57143986A true JPS57143986A (en) 1982-09-06

Family

ID=12279516

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56029560A Pending JPS57143986A (en) 1981-03-02 1981-03-02 Television camera

Country Status (1)

Country Link
JP (1) JPS57143986A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046216A (en) * 1973-08-29 1975-04-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046216A (en) * 1973-08-29 1975-04-24

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