GB468505A - Television transmission method - Google Patents
Television transmission methodInfo
- Publication number
- GB468505A GB468505A GB439/36A GB43936A GB468505A GB 468505 A GB468505 A GB 468505A GB 439/36 A GB439/36 A GB 439/36A GB 43936 A GB43936 A GB 43936A GB 468505 A GB468505 A GB 468505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- synchronizing
- biassed
- grid
- deflecting
- 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
- H04N5/067—Arrangements or circuits at the transmitter end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/08—Separation of synchronising signals from picture signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
- Television Systems (AREA)
Abstract
468,505. Television. RADIOAKT.- GES. D. S. LOEWE. Jan. 6, 1936, No. 439. Convention date, Jan. 9, 1935. [Class 40 (iii)] Synchronizing impulses are separated by an amplitude filter which is rendered effective just before the arrival of a synchronizing impulse. The synchronizing impulses are produced by a suitable edging to the picture and are of the form shown in Fig. 2b at A. At the receiver, the received signal is de-modulated by a grid leak type detector 11 connected directly to an amplitude filter 14. The grid 23 is biassed from a source 28 and also from a deflecting electrode 25a of the cathode-ray tube. The filter 14 is thus arranged to be biassed to cut-off except when the deflecting potential applied to the electrode 25a reaches its maximum, i.e. at the end of each line. The synchronizing impulse then applied to the filter renders the cathode 15 negative with respect to the anode 19 (corresponding with the sudden drop tz in the synchronizing pulse) so that an impulse passes through the filter 14 to trip the deflecting oscillator. A grid 23<1> is similarly biassed to control the framing oscillation generator.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE468505X | 1935-01-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB468505A true GB468505A (en) | 1937-07-06 |
Family
ID=6540859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB439/36A Expired GB468505A (en) | 1935-01-09 | 1936-01-06 | Television transmission method |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2227002A (en) |
| AT (1) | AT148929B (en) |
| BE (1) | BE413031A (en) |
| DK (1) | DK58968C (en) |
| FR (1) | FR800353A (en) |
| GB (1) | GB468505A (en) |
| NL (1) | NL48126C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2580672A (en) * | 1947-11-14 | 1952-01-01 | Bell Telephone Labor Inc | Saw-tooth generator and system utilizing it |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2483442A (en) * | 1947-07-21 | 1949-10-04 | Faximile Inc | Page separation signal and pulse generator |
| US2621245A (en) * | 1947-09-09 | 1952-12-09 | Rca Corp | Color scanning system |
| US2587074A (en) * | 1948-09-29 | 1952-02-26 | Rca Corp | Color television image reproducing system |
| US2605350A (en) * | 1948-10-23 | 1952-07-29 | Rca Corp | Synchronizing signal separator circuit |
-
0
- BE BE413031D patent/BE413031A/xx unknown
- NL NL48126D patent/NL48126C/xx active
-
1935
- 1935-12-23 DK DK58968D patent/DK58968C/en active
- 1935-12-27 AT AT148929D patent/AT148929B/en active
-
1936
- 1936-01-04 FR FR800353D patent/FR800353A/en not_active Expired
- 1936-01-06 GB GB439/36A patent/GB468505A/en not_active Expired
- 1936-01-07 US US57870A patent/US2227002A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2580672A (en) * | 1947-11-14 | 1952-01-01 | Bell Telephone Labor Inc | Saw-tooth generator and system utilizing it |
Also Published As
| Publication number | Publication date |
|---|---|
| DK58968C (en) | 1941-08-25 |
| NL48126C (en) | |
| FR800353A (en) | 1936-07-03 |
| US2227002A (en) | 1940-12-31 |
| BE413031A (en) | |
| AT148929B (en) | 1937-03-10 |
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