JPS54145429A - Pickup unit - Google Patents

Pickup unit

Info

Publication number
JPS54145429A
JPS54145429A JP5432978A JP5432978A JPS54145429A JP S54145429 A JPS54145429 A JP S54145429A JP 5432978 A JP5432978 A JP 5432978A JP 5432978 A JP5432978 A JP 5432978A JP S54145429 A JPS54145429 A JP S54145429A
Authority
JP
Japan
Prior art keywords
pickup tube
electron beam
pickup
fixed level
blanking
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
JP5432978A
Other languages
Japanese (ja)
Inventor
Hideo Nakayama
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 JP5432978A priority Critical patent/JPS54145429A/en
Publication of JPS54145429A publication Critical patent/JPS54145429A/en
Pending legal-status Critical Current

Links

Landscapes

  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

PURPOSE: To prevent halation due to a difference in illumination in the same visual field by providing the 2nd pickup tube which takes the picture of the same subject with the horizontal-blanking-period electron beam of the 1st pickup tube ON and by controlling the electron beam of the 1st pickup tube by the output of the 2nd one more than a fixed level.
CONSTITUTION: A light beam after penetrating taking lens 1 for pickup tubes is branched by half-mirror 2; one beam is applied to the 1st pickup tube 3a which outputs the video signal of a subject, and the other is to the 2nd pickup tube 3b which turns on an electron beam in the horizontal blanking interval of pickup tube 3a. Further, waveform-shaping circuit 6 is connected to video amplifier 5b which detects components more than a fixed level from the output of the 2nd pickup tube 3b, and detection signal E more than the fixed level is detected by this circuit 6 and then supplied to blanking circuit 7 of the 1st pickup tube 3a so as to turn the electron beam of pickup tube 3a ON in the horizontal blanking period, thereby preventing halation due to a difference in illumination in the same visual field.
COPYRIGHT: (C)1979,JPO&Japio
JP5432978A 1978-05-08 1978-05-08 Pickup unit Pending JPS54145429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5432978A JPS54145429A (en) 1978-05-08 1978-05-08 Pickup unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5432978A JPS54145429A (en) 1978-05-08 1978-05-08 Pickup unit

Publications (1)

Publication Number Publication Date
JPS54145429A true JPS54145429A (en) 1979-11-13

Family

ID=12967543

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5432978A Pending JPS54145429A (en) 1978-05-08 1978-05-08 Pickup unit

Country Status (1)

Country Link
JP (1) JPS54145429A (en)

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