GB369832A - Improvements in or relating to television - Google Patents
Improvements in or relating to televisionInfo
- Publication number
- GB369832A GB369832A GB19798/31A GB1979831A GB369832A GB 369832 A GB369832 A GB 369832A GB 19798/31 A GB19798/31 A GB 19798/31A GB 1979831 A GB1979831 A GB 1979831A GB 369832 A GB369832 A GB 369832A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- insert
- inserts
- mesh
- electrons
- 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 2
- 238000005286 illumination Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
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
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/36—Photoelectric screens; Charge-storage screens
- H01J29/39—Charge-storage screens
- H01J29/41—Charge-storage screens using secondary emission, e.g. for supericonoscope
- H01J29/413—Charge-storage screens using secondary emission, e.g. for supericonoscope for writing and reading of charge pattern on opposite sides of the target, e.g. for superorthicon
- H01J29/416—Charge-storage screens using secondary emission, e.g. for supericonoscope for writing and reading of charge pattern on opposite sides of the target, e.g. for superorthicon with a matrix of electrical conductors traversing the target
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
369,832. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Zworykin, V. K. ; 22, Merrick Villa, Collingswood, New Jersey, U.S.A.). July 9, 1931, No. 19798. Convention date, July 17, 1930. [Classes 39 (i) and 40 (iii).] An electric image is formed from an optical image of the object to be transmitted and is scanned by cathode rays 44. The optical image is projected on a fine-mesh photoelectric cathode 11, which emits electrons 41, 43 proportionately to the illumination. These produce corresponding charges on insulated metallic inserts 15 in the anode 12. The opposite ends 16 of the inserts are scanned by a beam 44 of cathode rays which passes through a fine-mesh electrode at positive potential. The number of electrons 44a which reach the anode 13 in the neighbourhood 38 of each insert 15 varies with the charge on that insert and sets up a corresponding voltage across a resistance 25 in the grid circuit of an amplifying-valve 31 connected to a transmitter. The electrons which fall on the insert 15 discharge it by secondary emission to the screen 17. According to modifications, the mesh cathode 11 is replaced by a semitransparent photoelectric film on the inside of the cathode-ray tube 10 at its large end ; the electrodes 12, 13 are made of corrugated strips of nickel with their engaging edges spot-welded about the inserts, Figs. 7 and 8 (not shown); the electrodes 12, 13 are combined in a single electrode, Fig. 9 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US468610A US2157048A (en) | 1930-07-17 | 1930-07-17 | Television system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB369832A true GB369832A (en) | 1932-03-31 |
Family
ID=23860506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19798/31A Expired GB369832A (en) | 1930-07-17 | 1931-07-09 | Improvements in or relating to television |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2157048A (en) |
| BE (1) | BE381246A (en) |
| DE (1) | DE661263C (en) |
| FR (1) | FR720441A (en) |
| GB (1) | GB369832A (en) |
| NL (1) | NL39550C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE884507C (en) * | 1934-05-12 | 1953-07-27 | Emi Ltd | Storage cathode ray scanner with a cohesive photocathode layer separated from the one-sided or two-sided mosaic screen |
| DE884651C (en) * | 1934-08-03 | 1953-07-27 | Emi Ltd | Cathode ray scanner with mosaic screen |
| DE896952C (en) * | 1935-05-12 | 1953-11-16 | Emi Ltd | Storage cathode ray scanner with storage electrode on one side |
| DE753637C (en) * | 1938-03-29 | 1954-03-08 | Fernseh Gmbh | Method for operating image storage tubes, preferably with a storage electrode on one side |
| DE918753C (en) * | 1934-05-12 | 1954-10-04 | Emi Ltd | Storage cathode ray scanner with a continuous photocathode layer separated from the mosaic screen |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742761C (en) * | 1935-08-06 | 1943-12-10 | Telefunken Gmbh | Image converter image storage tubes with cathode ray scanning and a linear array of storage elements |
| DE754133C (en) * | 1935-08-14 | 1958-04-24 | Fernseh Gmbh | Mosaic electrode for storing image decomposition tubes |
| US2213174A (en) * | 1938-07-30 | 1940-08-27 | Rca Corp | Television transmitting tube |
| GB646458A (en) * | 1947-12-12 | 1950-11-22 | Cinema Television Ltd | Improvements in or relating to cathode ray tubes |
| BE494288A (en) * | 1949-03-05 | |||
| US2658670A (en) * | 1949-08-31 | 1953-11-10 | Rca Corp | Rate determining device |
| US3067348A (en) * | 1959-12-21 | 1962-12-04 | Rca Corp | Pickup tube target structure |
| US3453471A (en) * | 1964-10-09 | 1969-07-01 | Sheldon Edward E | Vacuum tube responsive to an electrical image received through an endwall of said tube provided with a plurality of electrical conductors |
-
1930
- 1930-07-17 US US468610A patent/US2157048A/en not_active Expired - Lifetime
-
1931
- 1931-06-24 FR FR720441D patent/FR720441A/en not_active Expired
- 1931-07-09 GB GB19798/31A patent/GB369832A/en not_active Expired
- 1931-07-11 DE DER82119D patent/DE661263C/en not_active Expired
- 1931-07-15 NL NL57694A patent/NL39550C/xx active
- 1931-07-20 BE BE381246D patent/BE381246A/xx unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE884507C (en) * | 1934-05-12 | 1953-07-27 | Emi Ltd | Storage cathode ray scanner with a cohesive photocathode layer separated from the one-sided or two-sided mosaic screen |
| DE918753C (en) * | 1934-05-12 | 1954-10-04 | Emi Ltd | Storage cathode ray scanner with a continuous photocathode layer separated from the mosaic screen |
| DE884651C (en) * | 1934-08-03 | 1953-07-27 | Emi Ltd | Cathode ray scanner with mosaic screen |
| DE896952C (en) * | 1935-05-12 | 1953-11-16 | Emi Ltd | Storage cathode ray scanner with storage electrode on one side |
| DE753637C (en) * | 1938-03-29 | 1954-03-08 | Fernseh Gmbh | Method for operating image storage tubes, preferably with a storage electrode on one side |
Also Published As
| Publication number | Publication date |
|---|---|
| DE661263C (en) | 1938-06-15 |
| BE381246A (en) | 1931-08-31 |
| FR720441A (en) | 1932-02-19 |
| NL39550C (en) | 1936-12-15 |
| US2157048A (en) | 1939-05-02 |
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