FR2356240A1 - Digital memory for video images - with transcoding circuit coupled between memory output and input - Google Patents

Digital memory for video images - with transcoding circuit coupled between memory output and input

Info

Publication number
FR2356240A1
FR2356240A1 FR7618832A FR7618832A FR2356240A1 FR 2356240 A1 FR2356240 A1 FR 2356240A1 FR 7618832 A FR7618832 A FR 7618832A FR 7618832 A FR7618832 A FR 7618832A FR 2356240 A1 FR2356240 A1 FR 2356240A1
Authority
FR
France
Prior art keywords
memory
input
digital memory
time base
read
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
FR7618832A
Other languages
French (fr)
Other versions
FR2356240B1 (en
Inventor
Henri Leverd
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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 Alcatel CIT SA filed Critical Alcatel CIT SA
Priority to FR7618832A priority Critical patent/FR2356240A1/en
Publication of FR2356240A1 publication Critical patent/FR2356240A1/en
Application granted granted Critical
Publication of FR2356240B1 publication Critical patent/FR2356240B1/fr
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
    • G01S7/2806—Employing storage or delay devices which preserve the pulse form of the echo signal, e.g. for comparing and combining echoes received during different periods
    • 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
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • G01S7/10—Providing two-dimensional and co-ordinated display of distance and direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

The digital memory is used to store a video image, defined by a series of binary words, obtained from the video signal provided by a transmitter via a quantifying and coding circuit with a first time base. The stored video image can be reproduced on a display screen which is scanned according to a second time base. A transcoding circuit is coupled between the output and input of the digital memory, with a circuit for generating alternate write and read-out sequences in accordance with one time base. Each of the latter sequences includes a read-out and a write sub-sequence for re-entering a transcoded word at the same memory address from which it was read out.
FR7618832A 1976-06-21 1976-06-21 Digital memory for video images - with transcoding circuit coupled between memory output and input Granted FR2356240A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7618832A FR2356240A1 (en) 1976-06-21 1976-06-21 Digital memory for video images - with transcoding circuit coupled between memory output and input

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7618832A FR2356240A1 (en) 1976-06-21 1976-06-21 Digital memory for video images - with transcoding circuit coupled between memory output and input

Publications (2)

Publication Number Publication Date
FR2356240A1 true FR2356240A1 (en) 1978-01-20
FR2356240B1 FR2356240B1 (en) 1978-12-15

Family

ID=9174669

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7618832A Granted FR2356240A1 (en) 1976-06-21 1976-06-21 Digital memory for video images - with transcoding circuit coupled between memory output and input

Country Status (1)

Country Link
FR (1) FR2356240A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107595A1 (en) * 1982-10-27 1984-05-02 Thomson-Csf Artificial after-glow method and apparatus, and their application to a digital image converter
EP0220014A2 (en) * 1985-10-07 1987-04-29 Raytheon Company Raster display echo receiving system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107595A1 (en) * 1982-10-27 1984-05-02 Thomson-Csf Artificial after-glow method and apparatus, and their application to a digital image converter
FR2535465A1 (en) * 1982-10-27 1984-05-04 Thomson Csf PROCESS FOR TREATING ARTIFICIAL REMANENCE IN A DIGITAL IMAGE TRANSFORMER
EP0220014A2 (en) * 1985-10-07 1987-04-29 Raytheon Company Raster display echo receiving system
EP0220014A3 (en) * 1985-10-07 1988-11-17 Raytheon Company Raster display echo receiving system

Also Published As

Publication number Publication date
FR2356240B1 (en) 1978-12-15

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse