GB451610A - Controlling the signal frequencies in television systems - Google Patents
Controlling the signal frequencies in television systemsInfo
- Publication number
- GB451610A GB451610A GB6885/35A GB688535A GB451610A GB 451610 A GB451610 A GB 451610A GB 6885/35 A GB6885/35 A GB 6885/35A GB 688535 A GB688535 A GB 688535A GB 451610 A GB451610 A GB 451610A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scanning
- area
- differential
- signals
- width
- 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
- H04N7/00—Television systems
- H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
Abstract
451,610. Television. MAGUIRE, I. L., 12, Thackeray Street, Elwood, Victoria, Australia. March 5, 1935, No. 6885. Convention date, March 6, 1934. [Class 40 (iii)] The reproducing light is modulated by a single signal derived from the differential effects of two signals which are separately derived from the simultaneous scanning of similar areas A1, A2, identically located on separate similar images I1, I2, but one scanning area A1 including an elementary area l additional to those included in the other scanning area. The differential signal thus represents the additional elementary area. The width of each scanning area increases along its length according to a sine law, and the maximum width h is equal to the width of a scanning-line. The light passing the respective scanning areas falls on separate cells connected in differential circuits, or the two signals may be transmitted separately and a differential circuit used at the receiver, or the two signals modulate two light beams in opposite senses, Figs. 7a and 7b (not shown). The scanning may be performed by a mirror drum, Fig. 4 (not shown), or by cathode-rays, Fig. 6 (not shown). The scanning areas may be equal, with one leading the other by the length of an elementary area, Fig. 5a (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU451610X | 1934-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB451610A true GB451610A (en) | 1936-08-10 |
Family
ID=3732317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6885/35A Expired GB451610A (en) | 1934-03-06 | 1935-03-05 | Controlling the signal frequencies in television systems |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR786929A (en) |
| GB (1) | GB451610A (en) |
-
1935
- 1935-03-05 GB GB6885/35A patent/GB451610A/en not_active Expired
- 1935-03-05 FR FR786929D patent/FR786929A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR786929A (en) | 1935-09-14 |
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