JPS54150165A - Luminance control system of ppi display device - Google Patents

Luminance control system of ppi display device

Info

Publication number
JPS54150165A
JPS54150165A JP5767978A JP5767978A JPS54150165A JP S54150165 A JPS54150165 A JP S54150165A JP 5767978 A JP5767978 A JP 5767978A JP 5767978 A JP5767978 A JP 5767978A JP S54150165 A JPS54150165 A JP S54150165A
Authority
JP
Japan
Prior art keywords
signal
plane
luminance control
luminance
generating part
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
JP5767978A
Other languages
Japanese (ja)
Inventor
Masanori Saito
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi 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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP5767978A priority Critical patent/JPS54150165A/en
Publication of JPS54150165A publication Critical patent/JPS54150165A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/56—Display arrangements
    • G01S7/62—Cathode-ray tube displays
    • G01S7/6218—Cathode-ray tube displays providing two-dimensional coordinated display of distance and direction
    • G01S7/6227—Plan-position indicators, i.e. P.P.I.

Abstract

PURPOSE:To make video plane equal in luminance, make information discrimination easy and achieve the improvement in training effect by controlling the luminances of the central part and outside circumferential part of the CRT plane in a PPI display device in navigation training or the like. CONSTITUTION:The output of a ramp function generating part FG is branched. One thereof is multiplied MP by the sine wave and cosine wave signal from a generating part SG and is sent out as the sweep signal Ss for X-axis and Y-axis. The other is supplied to a synthesizing part ST through a correction signal generating part RG, where the correction signal Sr for the luminance control signal Sb from a video signal generating part VG is synthesized and is then sent out as the corrected luminance control signal Sbr. In this case, synthesizing of the correction signal Sr corresponding to the function determined by the distance d from the center C of the F plane of CRT and the signal level at which the specified luminance is obtainable at the outermost circumferential part to the luminance control signal Sb enables the luminaces of the entire part of the F plane to be evened.
JP5767978A 1978-05-17 1978-05-17 Luminance control system of ppi display device Pending JPS54150165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5767978A JPS54150165A (en) 1978-05-17 1978-05-17 Luminance control system of ppi display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5767978A JPS54150165A (en) 1978-05-17 1978-05-17 Luminance control system of ppi display device

Publications (1)

Publication Number Publication Date
JPS54150165A true JPS54150165A (en) 1979-11-26

Family

ID=13062607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5767978A Pending JPS54150165A (en) 1978-05-17 1978-05-17 Luminance control system of ppi display device

Country Status (1)

Country Link
JP (1) JPS54150165A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010177A (en) * 1983-06-15 1985-01-19 テクトロニツクス・インコーポレイテツド Signal phase and amplitude display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010177A (en) * 1983-06-15 1985-01-19 テクトロニツクス・インコーポレイテツド Signal phase and amplitude display device
JPH0131144B2 (en) * 1983-06-15 1989-06-23 Tektronix Inc

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