GB321441A - Improvements in or relating to television apparatus and the like - Google Patents
Improvements in or relating to television apparatus and the likeInfo
- Publication number
- GB321441A GB321441A GB2023428A GB2023428A GB321441A GB 321441 A GB321441 A GB 321441A GB 2023428 A GB2023428 A GB 2023428A GB 2023428 A GB2023428 A GB 2023428A GB 321441 A GB321441 A GB 321441A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spirals
- disc
- scanning
- light
- operative
- 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
- H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
- H04N3/04—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving aperture also apertures covered by lenses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/50—Picture reproducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/66—Transforming electric information into light information
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Discharge Lamp (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
321,441. Baird, J. L., and Television, Ltd. July 11, 1928. Television.-In an apparatus for stereoscopic television, two aspects of an object or scene are transmitted successively through a single communication-channel and reproduced in juxtaposition, at such a rate as to be within the persistence of vision of the observer, which involves the transmission of some 12 images of each aspect per second. The scanning disc 14, Figs. 2 and 3 is provided with two sets of holes 10, 11, Fig. 1, lying on spirals whose " operative points " are 12 and 13 respectively, and which are spaced any desired distance apart, e.g. the spacing of human eyes. In the transmitter, Fig. 2, the light sources 17, 18 scan the object 21 alternately, and from a different angle, through the spirals 10, 11, whose fields are represented as 15 and 16 respectively, and light from the sources, reflected from the object, is received by the light-sensitive cells 22, 23 respectively. At the receiver Fig. 3, glow discharge lamps 24, 25 in conjunction with an identical scanning disc 14, produce two images in alternation which are in juxtaposition and are viewed by a stereoscope 26. Exaggerated stereoscopic effects may be obtained by using scanning discs of the type shown in Fig. 4, in which 30, 31 are the widely spaced " operative points " of the spirals 28, 29 respectively. Colour effects may be obtained by reproducing one picture in red and the other in blue by using a filter of appropriate colour with each spiral on both scanning discs. For a three-colour process the disc 32, Fig. 5, is preferably used in which the three outer spirals 33, 34, 35 have an " operative point " 39, and the three inner spirals 36, 37, 38 have an " operative point " 40, the spirals of each group being provided with blue, green, and red colour filters respectively, arranged in any desired sequence. An alternative scanning scheme employs a disc 41, Fig. 6, having two spirals 42, 43 extending substantially all round the disc, having " operative points " 44, 45, respectively, and whose corresponding light-apertures are on different but adjacent radii so that at any given time one band only of one of the pictures is being explored, and the transmission consists of a series of intercalated bands from the two images. The light-apertures in the scanning discs may be replaced by lenses, mirrors, or the equivalents. Specification 266,564 is referred to.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE361393D BE361393A (en) | 1928-07-11 | ||
GB2023428A GB321441A (en) | 1928-07-11 | 1928-07-11 | Improvements in or relating to television apparatus and the like |
GB1471229A GB322822A (en) | 1928-07-11 | 1928-07-11 | Improvements in or relating to television apparatus and the like |
GB1471329A GB322823A (en) | 1928-07-11 | 1928-07-11 | Improvements in or relating to television apparatus and the like |
FR676189D FR676189A (en) | 1928-07-11 | 1929-06-04 | Improvements to television and similar apparatus |
DEB144439D DE574174C (en) | 1928-07-11 | 1929-06-30 | Device for remote transmission of three-dimensional images |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2023428A GB321441A (en) | 1928-07-11 | 1928-07-11 | Improvements in or relating to television apparatus and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB321441A true GB321441A (en) | 1929-11-11 |
Family
ID=10142582
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1471229A Expired GB322822A (en) | 1928-07-11 | 1928-07-11 | Improvements in or relating to television apparatus and the like |
GB2023428A Expired GB321441A (en) | 1928-07-11 | 1928-07-11 | Improvements in or relating to television apparatus and the like |
GB1471329A Expired GB322823A (en) | 1928-07-11 | 1928-07-11 | Improvements in or relating to television apparatus and the like |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1471229A Expired GB322822A (en) | 1928-07-11 | 1928-07-11 | Improvements in or relating to television apparatus and the like |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1471329A Expired GB322823A (en) | 1928-07-11 | 1928-07-11 | Improvements in or relating to television apparatus and the like |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE361393A (en) |
DE (1) | DE574174C (en) |
FR (1) | FR676189A (en) |
GB (3) | GB322822A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE752763C (en) * | 1938-07-11 | 1953-02-02 | Fernseh Gmbh | Method for the transmission of color television pictures using a storing picture transmitter tube with cathode ray scanning and a moving color filter switched into the optical beam path |
DE912368C (en) * | 1938-10-08 | 1954-05-28 | Aeg | Device for the simultaneous observation of preferably differently shaped oscillograms which are recorded on four different screens |
-
0
- BE BE361393D patent/BE361393A/xx unknown
-
1928
- 1928-07-11 GB GB1471229A patent/GB322822A/en not_active Expired
- 1928-07-11 GB GB2023428A patent/GB321441A/en not_active Expired
- 1928-07-11 GB GB1471329A patent/GB322823A/en not_active Expired
-
1929
- 1929-06-04 FR FR676189D patent/FR676189A/en not_active Expired
- 1929-06-30 DE DEB144439D patent/DE574174C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE574174C (en) | 1933-04-10 |
BE361393A (en) | |
FR676189A (en) | 1930-02-19 |
GB322822A (en) | 1929-12-11 |
GB322823A (en) | 1929-12-11 |
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