GB1085811A - Method and apparatus for increasing writing rate of storage tube - Google Patents
Method and apparatus for increasing writing rate of storage tubeInfo
- Publication number
- GB1085811A GB1085811A GB1412/65A GB141265A GB1085811A GB 1085811 A GB1085811 A GB 1085811A GB 1412/65 A GB1412/65 A GB 1412/65A GB 141265 A GB141265 A GB 141265A GB 1085811 A GB1085811 A GB 1085811A
- Authority
- GB
- United Kingdom
- Prior art keywords
- writing
- velocity
- voltage
- target
- flood
- 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
-
- 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
- H01J31/122—Direct viewing storage tubes without storage grid
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/23—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using electrostatic storage on a common layer, e.g. Forrester-Haeff tubes or William tubes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
1,085,811. Cathode-ray storage tubes. TEKTRONIX Inc. Jan. 12, 1965 [Jan. 13, 1964], No. 1412/65. Heading H1D. In a bi-stable storage tube, particularly of the direct-view type described in Specification 992,178, in which the target 26 is bombarded with low velocity holding electrons from source 30 to permit the bi-stable storage of a charge image produced on the target by a high velocity writing beam, the writing rate of the tube is increased by preventing the holding electrons from bombarding the target during writing, and by momentarily increasing the velocity of the holding electrons after writing by means of an enhancement voltage greater than the first cross-over voltage, so that written areas of the target having a potential less than the first crossover voltage are charged to a potential above this voltage, after which the velocity of the holding electrons is decreased to permit conventional bi-stable storage. The momentary increase in the velocity of the holding electrons is possible since unwritten background areas of the target charge at a slower rate than the written areas and are not permitted to reach the first crossover voltage. The flood gun cathodes 31 may be connected to a three-position manual switch to effect cut-off during writing; application of a writing rate enhancement pulse whereby the cathode potential rises exponentially from - 70V to 0V in a time determined by the circuit including capacitor 48 and resistors 50, 52, and then remains at OV for directviewing storage; and erasure. Alternatively, for automatic operation, a blanking signal generator is triggered by the input writing signal to apply a negative voltage blanking pulse to the control grids of the flood guns, so that a capacitor connected to the flood gun cathodes charges to a negative voltage to increase momentarily the velocity of the flood electrons when the flood guns are turned back on by termination of the blanking pulse. As a further alternative, a negative rectangular pulse may be applied to the flood gun cathodes for writing rate enhancement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33737064A | 1964-01-13 | 1964-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1085811A true GB1085811A (en) | 1967-10-04 |
Family
ID=23320290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1412/65A Expired GB1085811A (en) | 1964-01-13 | 1965-01-12 | Method and apparatus for increasing writing rate of storage tube |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3413513A (en) |
| JP (1) | JPS5245187B1 (en) |
| CH (1) | CH421314A (en) |
| DE (1) | DE1272370B (en) |
| FR (1) | FR1422475A (en) |
| GB (1) | GB1085811A (en) |
| NL (1) | NL146979B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3693040A (en) * | 1970-12-16 | 1972-09-19 | Iwatsu Electric Co Ltd | Method of reading bistable storage tubes by increasing luminescence where information is stored |
| US3798494A (en) * | 1971-12-08 | 1974-03-19 | Tektronix Inc | Non-storage electron multiplier operation of transmission storage tube |
| US4232250A (en) * | 1979-04-19 | 1980-11-04 | Tektronix, Inc. | No-flash erase of direct viewing bistable storage CRT |
| US4335380A (en) * | 1980-06-16 | 1982-06-15 | Wright David Y | Multi-beam raster scan display monitor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL90305C (en) * | 1950-07-20 | |||
| NL293466A (en) * | 1962-05-31 |
-
1965
- 1965-01-09 DE DEP1272A patent/DE1272370B/en active Pending
- 1965-01-12 FR FR1658A patent/FR1422475A/en not_active Expired
- 1965-01-12 GB GB1412/65A patent/GB1085811A/en not_active Expired
- 1965-01-12 CH CH39465A patent/CH421314A/en unknown
- 1965-01-13 JP JP40001298A patent/JPS5245187B1/ja active Pending
- 1965-01-13 NL NL656500398A patent/NL146979B/en not_active IP Right Cessation
-
1967
- 1967-04-07 US US659826A patent/US3413513A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL6500398A (en) | 1965-07-14 |
| US3413513A (en) | 1968-11-26 |
| CH421314A (en) | 1966-09-30 |
| JPS5245187B1 (en) | 1977-11-14 |
| NL146979B (en) | 1975-08-15 |
| FR1422475A (en) | 1965-12-24 |
| DE1272370B (en) | 1968-07-11 |
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