GB802604A - Improvements in or relating to television amplifying circuit arrangements - Google Patents
Improvements in or relating to television amplifying circuit arrangementsInfo
- Publication number
- GB802604A GB802604A GB36871/56A GB3687156A GB802604A GB 802604 A GB802604 A GB 802604A GB 36871/56 A GB36871/56 A GB 36871/56A GB 3687156 A GB3687156 A GB 3687156A GB 802604 A GB802604 A GB 802604A
- Authority
- GB
- United Kingdom
- Prior art keywords
- network
- diode
- time constant
- television
- relating
- 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
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
- H04N5/165—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Picture Signal Circuits (AREA)
Abstract
802,604. Television. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 3, 1956 [Dec. 6, 1955], No. 36871/56. Class 40 (3). Incorrect amplification of the D.C. component of a television signal 1 by a video amplifier 6 due to the automatic biasing circuit RK, CK having a time constant which is large compared with the duration of a single line scan is compensated by peak detecting a suitable fraction of the output signal 10 by means of a diode 14 and supplying the detected voltage to develop a correcting bias across the network Rd, Cd in the control grid circuit the time constant of this network being large compared with the duration of a single line scan but not greater than that of network RK, CK and the time constant of the network R,. C supplying diode 114 being equal to that of network RK, CK. If the signal 1 already contains the D.C. component it may be supplied directly to the grid of valve 6, condenser 4 and diode 8 being omitted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL802604X | 1955-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB802604A true GB802604A (en) | 1958-10-08 |
Family
ID=19836451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36871/56A Expired GB802604A (en) | 1955-12-06 | 1956-12-03 | Improvements in or relating to television amplifying circuit arrangements |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1067855B (en) |
| FR (1) | FR1162791A (en) |
| GB (1) | GB802604A (en) |
| NL (1) | NL202606A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1123362B (en) * | 1960-11-18 | 1962-02-08 | Fernseh Gmbh | Arrangement for black control in a television receiver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE510089A (en) * | 1951-03-22 | |||
| BE524213A (en) * | 1952-11-14 |
-
0
- NL NL202606D patent/NL202606A/xx unknown
-
1956
- 1956-12-01 DE DEN13025A patent/DE1067855B/en active Pending
- 1956-12-03 GB GB36871/56A patent/GB802604A/en not_active Expired
- 1956-12-07 FR FR1162791D patent/FR1162791A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1162791A (en) | 1958-09-17 |
| NL202606A (en) | |
| DE1067855B (en) | 1959-10-29 |
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