ES465807A1 - Phaseshifting circuits and television receivers incorporating them - Google Patents
Phaseshifting circuits and television receivers incorporating themInfo
- Publication number
- ES465807A1 ES465807A1 ES465807A ES465807A ES465807A1 ES 465807 A1 ES465807 A1 ES 465807A1 ES 465807 A ES465807 A ES 465807A ES 465807 A ES465807 A ES 465807A ES 465807 A1 ES465807 A1 ES 465807A1
- Authority
- ES
- Spain
- Prior art keywords
- circuit
- adjustable
- emitter
- output
- phaseshifting
- 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
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/16—Networks for phase shifting
- H03H11/20—Two-port phase shifters providing an adjustable phase shift
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/44—Colour synchronisation
- H04N9/455—Generation of colour burst signals; Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Networks Using Active Elements (AREA)
Abstract
Adjustable and adjustable phase shifting circuit for supplying a sinusoidal wave applied at its signal input with two different phase shifters according to the level of a control signal applied at a control input including said circuit: a symmetrical phase shifter comprising a first transistor amplifier whose base receives said and whose collector and the emitter are respectively connected to two terminals of a first source of direct voltage supply by two load resistors of the same value, which is connected to said emitter at the output of the circuit by means of an adjustable resistance and being connected to said manifold at said output by means of of a variable capacity diode based on its reverse bias voltage (varicap); and a second switching transistor commanded at its base by switching command signals to be either in the locked state or in the saturated state. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7700375A FR2377128A1 (en) | 1977-01-07 | 1977-01-07 | SWITCHABLE AND ADJUSTABLE PHASER CIRCUIT AND TELEVISION RECEIVER INCLUDING SUCH A CIRCUIT |
Publications (1)
Publication Number | Publication Date |
---|---|
ES465807A1 true ES465807A1 (en) | 1978-09-16 |
Family
ID=9185242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES465807A Expired ES465807A1 (en) | 1977-01-07 | 1978-01-05 | Phaseshifting circuits and television receivers incorporating them |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE862691A (en) |
DE (1) | DE2800203A1 (en) |
EG (1) | EG13398A (en) |
ES (1) | ES465807A1 (en) |
FR (1) | FR2377128A1 (en) |
GB (1) | GB1558054A (en) |
IT (1) | IT1101912B (en) |
-
1977
- 1977-01-07 FR FR7700375A patent/FR2377128A1/en active Granted
-
1978
- 1978-01-03 DE DE19782800203 patent/DE2800203A1/en not_active Withdrawn
- 1978-01-04 EG EG4/78A patent/EG13398A/en active
- 1978-01-05 ES ES465807A patent/ES465807A1/en not_active Expired
- 1978-01-06 BE BE184142A patent/BE862691A/en not_active IP Right Cessation
- 1978-01-06 IT IT47549/78A patent/IT1101912B/en active
- 1978-01-09 GB GB793/78A patent/GB1558054A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2377128A1 (en) | 1978-08-04 |
IT1101912B (en) | 1985-10-07 |
IT7847549A0 (en) | 1978-01-06 |
GB1558054A (en) | 1979-12-19 |
BE862691A (en) | 1978-05-02 |
EG13398A (en) | 1981-06-30 |
FR2377128B1 (en) | 1982-06-04 |
DE2800203A1 (en) | 1978-07-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19991228 |