GB417052A - Improvements in or relating to television systems - Google Patents
Improvements in or relating to television systemsInfo
- Publication number
- GB417052A GB417052A GB854333A GB854333A GB417052A GB 417052 A GB417052 A GB 417052A GB 854333 A GB854333 A GB 854333A GB 854333 A GB854333 A GB 854333A GB 417052 A GB417052 A GB 417052A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- picture
- projected
- usual
- spot
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/36—Scanning of motion picture films, e.g. for telecine
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
- H04N3/34—Elemental scanning area oscillated rapidly in direction transverse to main scanning direction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
417,052. Television. MARTIN, L. C., 99, Nightingale Lane, Bromley, Kent. March 21, 1933, No. 8543. Drawings to Specification. [Class 40 (iii).] Slowly moving objects are scanned at an abnormally low frame-frequency and each of the reproduced pictures is projected for a correspondingly long time. Thus a Nipkow disc at the transmitter may complete only four frames instead of the usual sixteen per second ; and the number of scanning-lines can be proportionately increased, or the speed of the scanning-spot reduced. At the receiver the picture is reproduced, by means of a Kerr-cell light-valve and a mirror drum, on a kinematograph film which is projected in such a manner that each constituent picture is exhibited for four times as long as usual ; alternatively the film may comprise four successive copies of each picture or frame and be operated at the usual speed. If the light-valve comprises a doubleimage prism in combination with a Kerr cell, one moving light-spot may be projected on to the film and the other, for monitoring purposes, on to a screen surfaced with phosphorescent material such as a Lenard phosphor; and in order that the moving spot may itself be invisible, it may consist of ultra-violet light, or light of a colour complementary to that of the screen. The light-valve may be adjusted to give a positive or negative picture or (if a double-image prism is employed) both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB854333A GB417052A (en) | 1933-03-21 | 1933-03-21 | Improvements in or relating to television systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB854333A GB417052A (en) | 1933-03-21 | 1933-03-21 | Improvements in or relating to television systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB417052A true GB417052A (en) | 1934-09-21 |
Family
ID=9854470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB854333A Expired GB417052A (en) | 1933-03-21 | 1933-03-21 | Improvements in or relating to television systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB417052A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1135954B (en) * | 1954-09-30 | 1962-09-06 | Western Electric Co | Method and arrangement for the transmission of an accompanying image in a telephone connection |
| GB2186147A (en) * | 1986-01-30 | 1987-08-05 | Quantel Ltd | Image display system |
-
1933
- 1933-03-21 GB GB854333A patent/GB417052A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1135954B (en) * | 1954-09-30 | 1962-09-06 | Western Electric Co | Method and arrangement for the transmission of an accompanying image in a telephone connection |
| GB2186147A (en) * | 1986-01-30 | 1987-08-05 | Quantel Ltd | Image display system |
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