JPS56145372A - Display - Google Patents

Display

Info

Publication number
JPS56145372A
JPS56145372A JP4998180A JP4998180A JPS56145372A JP S56145372 A JPS56145372 A JP S56145372A JP 4998180 A JP4998180 A JP 4998180A JP 4998180 A JP4998180 A JP 4998180A JP S56145372 A JPS56145372 A JP S56145372A
Authority
JP
Japan
Prior art keywords
image memory
memory
irregularity
access frequency
image
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.)
Granted
Application number
JP4998180A
Other languages
Japanese (ja)
Other versions
JPS6243146B2 (en
Inventor
Yoshio Numayasu
Yoshio Kato
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.)
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki 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 Tokyo Keiki Co Ltd filed Critical Tokyo Keiki Co Ltd
Priority to JP4998180A priority Critical patent/JPS56145372A/en
Publication of JPS56145372A publication Critical patent/JPS56145372A/en
Publication of JPS6243146B2 publication Critical patent/JPS6243146B2/ja
Granted 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
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/295—Means for transforming co-ordinates or for evaluating data, e.g. using computers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To obtain a display having overall homogeneity by providing an access- frequency controlling circuit which controls the access frequency of image memory and correcting irregularity of the image information density. CONSTITUTION:The video signal at positions expressed by polar coordinates which are periodically obtained from a radar transmitter-receiver is converted to a digital signal by a quantizer 101, stored in a buffer memory 102 temporarily, and inputted and stored in an image memory 111 via an integrator 103, an extracting memory 104, and the like. In the case the polar coordinate data are converted into orthogonal coordinates and written in the image memory 111, the access frequency control circuit 106 is provided in order to correct the irregularity generated at the central part and the peripheral part. When a switch S3 is connected, the access frequency to the image memory 111 is controlled, and the irregularity in the image information density is corrected.
JP4998180A 1980-04-15 1980-04-15 Display Granted JPS56145372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4998180A JPS56145372A (en) 1980-04-15 1980-04-15 Display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4998180A JPS56145372A (en) 1980-04-15 1980-04-15 Display

Publications (2)

Publication Number Publication Date
JPS56145372A true JPS56145372A (en) 1981-11-12
JPS6243146B2 JPS6243146B2 (en) 1987-09-11

Family

ID=12846186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4998180A Granted JPS56145372A (en) 1980-04-15 1980-04-15 Display

Country Status (1)

Country Link
JP (1) JPS56145372A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006226686A (en) * 2005-02-15 2006-08-31 Japan Radio Co Ltd Image data creation apparatus, image display apparatus, and radar system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5299797A (en) * 1976-02-16 1977-08-22 Hollandse Signaalapparaten Bv Digital scanning transducer
JPS5379491A (en) * 1976-12-24 1978-07-13 Tokyo Keiki Kk Radar indicator
JPS5429061U (en) * 1977-07-29 1979-02-26
JPS54134467A (en) * 1978-04-10 1979-10-18 Koden Electronics Co Ltd Ultrasoniccwave detecting indicator
JPS5510550A (en) * 1978-07-10 1980-01-25 Koden Electronics Co Ltd Display unit for detection information

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429061B2 (en) * 1973-12-17 1979-09-20

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5299797A (en) * 1976-02-16 1977-08-22 Hollandse Signaalapparaten Bv Digital scanning transducer
JPS5379491A (en) * 1976-12-24 1978-07-13 Tokyo Keiki Kk Radar indicator
JPS5429061U (en) * 1977-07-29 1979-02-26
JPS54134467A (en) * 1978-04-10 1979-10-18 Koden Electronics Co Ltd Ultrasoniccwave detecting indicator
JPS5510550A (en) * 1978-07-10 1980-01-25 Koden Electronics Co Ltd Display unit for detection information

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006226686A (en) * 2005-02-15 2006-08-31 Japan Radio Co Ltd Image data creation apparatus, image display apparatus, and radar system

Also Published As

Publication number Publication date
JPS6243146B2 (en) 1987-09-11

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