GB1215520A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB1215520A GB1215520A GB60988/68A GB6098868A GB1215520A GB 1215520 A GB1215520 A GB 1215520A GB 60988/68 A GB60988/68 A GB 60988/68A GB 6098868 A GB6098868 A GB 6098868A GB 1215520 A GB1215520 A GB 1215520A
- Authority
- GB
- United Kingdom
- Prior art keywords
- yoke
- yokes
- deflection
- tube
- deflects
- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/085—Error detection or correction by redundancy in data representation, e.g. by using checking codes using codes with inherent redundancy, e.g. n-out-of-m codes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/16—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with mask carrying a number of selectively displayable signs, e.g. charactron, numeroscope
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
1,215,520. Character display. STROMBERG DATA GRAPHICS Inc. 23 Dec., 1968 [29 Dec., 1967], No. 60988/68. Heading G4H. [Also in Division H1] In a cathode-ray tube of the character display type wherein an electron beam is deflected on to a selected shaped aperture 16 in a stencil 14 and the resultant shaped beam is deflected by means 21 to a desired position on a target 13, a first deflection yoke 17 deflects the beam on to the required aperture 16, a second deflection yoke 18 deflects the beam back to the axis, a third deflection yoke 19 directs the beam along the axis, and electrodes 43 and 48 maintain a substantially equipotential region through the deflection yokes to minimise distortions produced by lens aberrations. As shown the potential of electrode 48 may be adjustable to a limited extent to compensate for variations in field strength of the yokes due to manufacturing tolerances. As shown each yoke comprises an X coil and a Y coil, and all the corresponding coils may be connected in series so that they may be fed from a common amplifier, the windings in the yoke 18 being oppositely wound from those in the other two yokes. The tube shown in Fig. 1 includes an electrostatic focusing system 37-39 before the yoke 17 and an electrostatic focusing system 51-52 after the yoke 19: in a modification, Fig. 2 (not shown), these are replaced by focusing coils (156 and 157). The target 13 may be a phosphor, and the tube may be used for visual read-out, photography, or electrostatic printing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69468667A | 1967-12-29 | 1967-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1215520A true GB1215520A (en) | 1970-12-09 |
Family
ID=24789852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB60988/68A Expired GB1215520A (en) | 1967-12-29 | 1968-12-23 | Improvements in or relating to cathode ray tubes |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3473077A (en) |
| BE (1) | BE726163A (en) |
| CH (1) | CH496318A (en) |
| DE (1) | DE1817219A1 (en) |
| FR (1) | FR1596430A (en) |
| GB (1) | GB1215520A (en) |
| NL (1) | NL6818628A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3600628A (en) * | 1969-09-22 | 1971-08-17 | Stromberg Datagraphix Inc | Cathode ray tube projection display system |
| US4032815A (en) * | 1975-11-04 | 1977-06-28 | Stromberg Datagraphix Inc. | Collimated beam electron gun system for shaped beam cathode ray tube |
| US4107582A (en) * | 1976-07-21 | 1978-08-15 | Stromberg Datagraphix, Inc. | Character selector for a shaped beam cathode ray tube |
| GB2076589B (en) * | 1980-05-19 | 1985-03-06 | Hughes Aircraft Co | Electron-beam shaping apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2803769A (en) * | 1952-07-07 | 1957-08-20 | Gen Dynamics Corp | Cathode ray apparatus |
| US2769116A (en) * | 1954-12-02 | 1956-10-30 | Hughes Aircraft Co | Deflection system for cathode-ray type storage tubes |
| US2824250A (en) * | 1955-05-12 | 1958-02-18 | Gen Dynamics Corp | Cathode ray apparatus utilizing convergence means |
| US2811668A (en) * | 1956-05-29 | 1957-10-29 | Gen Dynamics Corp | Electron beam deflection control system |
| US2888606A (en) * | 1956-08-27 | 1959-05-26 | Rca Corp | Modulation control for cathode ray tubes |
| US3035199A (en) * | 1957-11-29 | 1962-05-15 | Gen Dynamics Corp | Lens deflection in the electro optical system of a cathode ray tube |
-
1967
- 1967-12-29 US US694686A patent/US3473077A/en not_active Expired - Lifetime
-
1968
- 1968-12-23 GB GB60988/68A patent/GB1215520A/en not_active Expired
- 1968-12-24 NL NL6818628A patent/NL6818628A/xx unknown
- 1968-12-24 CH CH1933768A patent/CH496318A/en not_active IP Right Cessation
- 1968-12-27 BE BE726163D patent/BE726163A/xx unknown
- 1968-12-27 FR FR1596430D patent/FR1596430A/fr not_active Expired
- 1968-12-27 DE DE19681817219 patent/DE1817219A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR1596430A (en) | 1970-06-15 |
| CH496318A (en) | 1970-09-15 |
| NL6818628A (en) | 1969-07-01 |
| BE726163A (en) | 1969-05-29 |
| DE1817219A1 (en) | 1970-03-05 |
| US3473077A (en) | 1969-10-14 |
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