GB1409487A - Automatic map readers - Google Patents
Automatic map readersInfo
- Publication number
- GB1409487A GB1409487A GB1512073A GB1512073A GB1409487A GB 1409487 A GB1409487 A GB 1409487A GB 1512073 A GB1512073 A GB 1512073A GB 1512073 A GB1512073 A GB 1512073A GB 1409487 A GB1409487 A GB 1409487A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- motors
- reader
- map
- elements
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/20—Instruments for performing navigational calculations
- G01C21/22—Plotting boards
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Navigation (AREA)
- Instructional Devices (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
1409487 Indicating apparatus ELLIOTT BROS (LONDON) Ltd 15 March 1974 [29 March 1973] 15120/73 Heading G1J An automatic map reader for use in an aircraft comprises a displaying arrangement having a pair of line elements 15a, 15b which are rotatable about a common axis OZ, the elements being rotatably driven in such a manner that the point of intersection 19 of the lines indicates the position on a map 13 of the aircraft. Stepping motors or D.C. motors may be employed to drive the line elements 15a, 15b by way of gearing, the motors receiving inputs in accordance with navigation data fed automatically (e.g. by computer) to the control circuits of the motors. The line elements 15a, 15b may be provided on transparent discs which are rotatably mounted in one part of a housing which is hinged to another part of the housing, the parts being arranged, in use, to sandwich a map (or a part thereof) with which the reader is to be used. Manually operative buttons 67, 69, 71 are provided for setting purposes before the reader becomes automatically operative. The transparent discs may each be provided with a line in the shape of an archimedian spiral Fig. 5 (not shown), or one of the discs may be provided with such a line while the other is provided with a straight line, as shown.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1512073A GB1409487A (en) | 1973-03-29 | 1973-03-29 | Automatic map readers |
| JP3338974A JPS49127737A (en) | 1973-03-29 | 1974-03-25 | |
| DE19742414679 DE2414679A1 (en) | 1973-03-29 | 1974-03-27 | DEVICE FOR AUTOMATIC READING OF TOPOGRAPHICAL MAPS |
| FR7410779A FR2223669B3 (en) | 1973-03-29 | 1974-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1512073A GB1409487A (en) | 1973-03-29 | 1973-03-29 | Automatic map readers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1409487A true GB1409487A (en) | 1975-10-08 |
Family
ID=10053395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1512073A Expired GB1409487A (en) | 1973-03-29 | 1973-03-29 | Automatic map readers |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS49127737A (en) |
| DE (1) | DE2414679A1 (en) |
| FR (1) | FR2223669B3 (en) |
| GB (1) | GB1409487A (en) |
-
1973
- 1973-03-29 GB GB1512073A patent/GB1409487A/en not_active Expired
-
1974
- 1974-03-25 JP JP3338974A patent/JPS49127737A/ja active Pending
- 1974-03-27 DE DE19742414679 patent/DE2414679A1/en not_active Ceased
- 1974-03-28 FR FR7410779A patent/FR2223669B3/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2223669A1 (en) | 1974-10-25 |
| DE2414679A1 (en) | 1974-10-10 |
| FR2223669B3 (en) | 1977-01-21 |
| JPS49127737A (en) | 1974-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |