JPS5731273A - Pickup system using infrared ray - Google Patents

Pickup system using infrared ray

Info

Publication number
JPS5731273A
JPS5731273A JP10593380A JP10593380A JPS5731273A JP S5731273 A JPS5731273 A JP S5731273A JP 10593380 A JP10593380 A JP 10593380A JP 10593380 A JP10593380 A JP 10593380A JP S5731273 A JPS5731273 A JP S5731273A
Authority
JP
Japan
Prior art keywords
infrared ray
differential amplifier
amplifier
prescribed time
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
JP10593380A
Other languages
Japanese (ja)
Inventor
Shoji Doi
Hiroyuki Ishibashi
Yoshinori Tsujino
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 JP10593380A priority Critical patent/JPS5731273A/en
Publication of JPS5731273A publication Critical patent/JPS5731273A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/33—Transforming infrared radiation

Landscapes

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

Abstract

PURPOSE:To increase the hightness of a displaying image and the picture quality, by supplying the output signal of an infrared ray detector to a differential amplifier directly and via a delay line and reversing the difference of both inputs in phase every prescribed time to obtain a video signal. CONSTITUTION:An infrared ray (a) radiated from a subject 1 of observation is switched with an infrared ray (b) radiated from a reference light source 4 in a prescribed period, and these rays are made incident to an infrared ray detector 5. The output signal of the detector 5 is branched to two lines, and one of these two lines is delayed 6 by a prescribed time to the other. Then both signals are supplied to a differential amplifier 7. The output of the amplifier 7 is supplied to the 2nd differential amplifier 8 via a siwtch S which is switched with every above-mentioned prescribed time. Then the video signal is extracted out of the amplifier 8. Thus the signal from which the correspondence component of radiation due to the radiation from a subject and given from the light source 4 is eliminated can be obtained for a time of about double as much as conventional. As a result, both the brightness of a display image and the picture quality are increased.
JP10593380A 1980-07-31 1980-07-31 Pickup system using infrared ray Pending JPS5731273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10593380A JPS5731273A (en) 1980-07-31 1980-07-31 Pickup system using infrared ray

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10593380A JPS5731273A (en) 1980-07-31 1980-07-31 Pickup system using infrared ray

Publications (1)

Publication Number Publication Date
JPS5731273A true JPS5731273A (en) 1982-02-19

Family

ID=14420645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10593380A Pending JPS5731273A (en) 1980-07-31 1980-07-31 Pickup system using infrared ray

Country Status (1)

Country Link
JP (1) JPS5731273A (en)

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