GB479500A - Television scanning means according to the interlaced line-group method - Google Patents
Television scanning means according to the interlaced line-group methodInfo
- Publication number
- GB479500A GB479500A GB21452/36A GB2145236A GB479500A GB 479500 A GB479500 A GB 479500A GB 21452/36 A GB21452/36 A GB 21452/36A GB 2145236 A GB2145236 A GB 2145236A GB 479500 A GB479500 A GB 479500A
- Authority
- GB
- United Kingdom
- Prior art keywords
- edge
- disc
- aug
- apertures
- television
- 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
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
479,500. Television. RADIOAKT.-GES. D. S. LOEWE. Aug. 4, 1936, No. 21452. Convention date, Aug. 6, 1935. [Class 40 (iii)] Relates to a television transmitter utilizing a moving film in conjunction with a Nipkow disc, in which, for interlaced scanning, the disc is provided with two or more spirals of apertures, and in which the line synchronizing impulses are generated by the passage of the apertures across an abnormally bright or dark marginal line defined by the projection of a knife-edge. According to the invention, a separate adjustable edge is provided for each spiral, in order to correct slight optical or mechanical errors. Specifications 465,184 and 472,160 are referred to. The Specification as open to inspection under Sect. 91 also describes alternative arrangements in which (1) " the image points are so disposed on the disc that the sectional arc described by the same is constant independently of the distance from the central point." In this case a single straight " starting edge '' is applied to the edge of the image ; (2) the '' slotted rim '' method of producing synchronizing impulses may be used, with non-uniform spacing between the slots. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE479500X | 1935-08-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB479500A true GB479500A (en) | 1938-02-04 |
Family
ID=6542423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21452/36A Expired GB479500A (en) | 1935-08-06 | 1936-08-04 | Television scanning means according to the interlaced line-group method |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB479500A (en) |
-
1936
- 1936-08-04 GB GB21452/36A patent/GB479500A/en not_active Expired
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