FR2391600A1 - Systeme de conversion d'exploration de representation sur tube a rayons cathodiques - Google Patents
Systeme de conversion d'exploration de representation sur tube a rayons cathodiquesInfo
- Publication number
- FR2391600A1 FR2391600A1 FR7812898A FR7812898A FR2391600A1 FR 2391600 A1 FR2391600 A1 FR 2391600A1 FR 7812898 A FR7812898 A FR 7812898A FR 7812898 A FR7812898 A FR 7812898A FR 2391600 A1 FR2391600 A1 FR 2391600A1
- Authority
- FR
- France
- Prior art keywords
- memory
- representation
- exploration
- reiteration
- conversion system
- 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
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
- G01S7/298—Scan converters
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)
- Geophysics And Detection Of Objects (AREA)
Abstract
Système de conversion d'exploration de représentation destiné à représenter des données digitalisées disponibles en coordonnées polaires Q theta en coordonnées rectangulaire XY. Système dans lequel les données digitalisées sont transférées d'une mémoire tampon d'entrée dans une mémoire à réitération de manière que l'information précédemment emmagasinée en QO dans la mémoire tampon soit ensuite emmagasinée en XY dans la mémoire à réitération; la transformation de coordonnées est effectuée en calculant, à la fin d'une extraction de représentation d'une ligne horizontale particulière de données, les adresses Q et X des cellules de la mémoire à réitération devant être mises à jour depuis la mémoire tampon durant l'extraction de la ligne horizontale de données suivante ; lorsque les adresses X calculé et X horizontal correspondant, la mémoire à réitération est mise à jour avec les valeurs Q calculées. Système applicable aux représentations de radar.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/799,064 US4149252A (en) | 1977-05-20 | 1977-05-20 | Digital ρ-θ to XY scan converter for use with limited access or random access reiteration memory |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2391600A1 true FR2391600A1 (fr) | 1978-12-15 |
FR2391600B1 FR2391600B1 (fr) | 1982-12-17 |
Family
ID=25174956
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7812898A Granted FR2391600A1 (fr) | 1977-05-20 | 1978-05-02 | Systeme de conversion d'exploration de representation sur tube a rayons cathodiques |
Country Status (5)
Country | Link |
---|---|
US (1) | US4149252A (fr) |
DE (1) | DE2821421C3 (fr) |
FR (1) | FR2391600A1 (fr) |
GB (1) | GB1585999A (fr) |
IT (1) | IT1095510B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2441973A1 (fr) * | 1978-11-13 | 1980-06-13 | Litton Industrial Products | Convertisseur de balayage de systemes de formation d'images |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6024429B2 (ja) * | 1977-08-15 | 1985-06-12 | 沖電気工業株式会社 | デイジタル走査変換方式 |
US4214269A (en) * | 1979-03-09 | 1980-07-22 | Advanced Technology Laboratories, Inc. | Real time digital scan converter |
US4348693A (en) * | 1979-04-30 | 1982-09-07 | Arvin Industries, Inc. | Television weather radar system |
US4415928A (en) * | 1981-01-26 | 1983-11-15 | Rca Corporation | Calculation of radial coordinates of polar-coordinate raster scan |
US4387365A (en) * | 1981-05-15 | 1983-06-07 | Advanced Technology Laboratories, Inc. | Real time digital scan converter |
US4358789A (en) * | 1981-06-01 | 1982-11-09 | Inframetrics, Inc. | Digital scan converter for image scanning and display system |
US4547803A (en) * | 1981-11-27 | 1985-10-15 | Raytheon Company | PPI To raster display scan converter |
DE3235743A1 (de) * | 1982-09-27 | 1984-03-29 | Siemens AG, 1000 Berlin und 8000 München | Anordnung zum erkennen von objekten und deren drehlage |
GB2169465B (en) * | 1984-12-11 | 1989-10-04 | Mars G B Ltd | Polar to cartesian scan conversion |
FR2579794B1 (fr) * | 1985-04-02 | 1989-06-02 | Thomson Csf | Procede d'insertion et medaillons dans l'image fournie par un transformateur numerique d'images et transformateur numerique d'images mettant en oeuvre ce procede |
US6320609B1 (en) | 1998-07-10 | 2001-11-20 | Nanometrics Incorporated | System using a polar coordinate stage and continuous image rotation to compensate for stage rotation |
JP5411478B2 (ja) * | 2008-10-03 | 2014-02-12 | 古野電気株式会社 | レーダ装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2148348A1 (fr) * | 1969-11-28 | 1973-03-23 | Hughes Aircraft Co | |
US3904817A (en) * | 1974-02-01 | 1975-09-09 | United Aircraft Corp | Serial scan converter |
US4002827A (en) * | 1975-05-15 | 1977-01-11 | General Electric Company | Polar coordinate format to a cartesian coordinate format scan converter |
FR2341141A1 (fr) * | 1976-02-16 | 1977-09-09 | Hollandse Signaalapparaten Bv | Systeme de conversion numerique de balayage |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3147474A (en) * | 1962-01-23 | 1964-09-01 | Sperry Rand Corp | Information transformation system |
US3673323A (en) * | 1970-09-23 | 1972-06-27 | Hewlett Packard Co | Storage display system |
US3827027A (en) * | 1971-09-22 | 1974-07-30 | Texas Instruments Inc | Method and apparatus for producing variable formats from a digital memory |
US3765018A (en) * | 1972-06-02 | 1973-10-09 | Hughes Aircraft Co | Digital scan converter |
US3792194A (en) * | 1972-06-05 | 1974-02-12 | Westinghouse Electric Corp | Scan conversion apparatus |
GB1326466A (en) * | 1972-06-23 | 1973-08-15 | Elliott Brothers London Ltd | Scan conversion arrangements |
FR2266179A1 (en) * | 1974-03-26 | 1975-10-24 | Labo Cent Telecommunicat | Surface radar for airfield surveillance - has rotating antenna and high resolution transmitter-receiver |
GB1510148A (en) * | 1975-04-17 | 1978-05-10 | Secr Defence | Digital scan converters |
-
1977
- 1977-05-20 US US05/799,064 patent/US4149252A/en not_active Expired - Lifetime
-
1978
- 1978-04-26 GB GB16523/78A patent/GB1585999A/en not_active Expired
- 1978-05-02 FR FR7812898A patent/FR2391600A1/fr active Granted
- 1978-05-16 DE DE2821421A patent/DE2821421C3/de not_active Expired
- 1978-05-19 IT IT23593/78A patent/IT1095510B/it active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2148348A1 (fr) * | 1969-11-28 | 1973-03-23 | Hughes Aircraft Co | |
US3904817A (en) * | 1974-02-01 | 1975-09-09 | United Aircraft Corp | Serial scan converter |
US4002827A (en) * | 1975-05-15 | 1977-01-11 | General Electric Company | Polar coordinate format to a cartesian coordinate format scan converter |
FR2341141A1 (fr) * | 1976-02-16 | 1977-09-09 | Hollandse Signaalapparaten Bv | Systeme de conversion numerique de balayage |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2441973A1 (fr) * | 1978-11-13 | 1980-06-13 | Litton Industrial Products | Convertisseur de balayage de systemes de formation d'images |
Also Published As
Publication number | Publication date |
---|---|
DE2821421C3 (de) | 1980-10-16 |
DE2821421B2 (de) | 1980-02-14 |
FR2391600B1 (fr) | 1982-12-17 |
GB1585999A (en) | 1981-03-11 |
US4149252A (en) | 1979-04-10 |
IT7823593A0 (it) | 1978-05-19 |
IT1095510B (it) | 1985-08-10 |
DE2821421A1 (de) | 1978-11-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |