DE2829538A1 - Kanalfilteranordnung und damit ausgestatteter kanalwaehler fuer einen fernsehempfaenger - Google Patents
Kanalfilteranordnung und damit ausgestatteter kanalwaehler fuer einen fernsehempfaengerInfo
- Publication number
- DE2829538A1 DE2829538A1 DE19782829538 DE2829538A DE2829538A1 DE 2829538 A1 DE2829538 A1 DE 2829538A1 DE 19782829538 DE19782829538 DE 19782829538 DE 2829538 A DE2829538 A DE 2829538A DE 2829538 A1 DE2829538 A1 DE 2829538A1
- Authority
- DE
- Germany
- Prior art keywords
- channel
- signals
- frequency
- mixer
- filter
- 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.)
- Ceased
Links
- 238000010897 surface acoustic wave method Methods 0.000 claims description 58
- 238000001228 spectrum Methods 0.000 claims description 49
- 230000005669 field effect Effects 0.000 claims description 32
- 239000000758 substrate Substances 0.000 claims description 28
- 230000001360 synchronised effect Effects 0.000 claims description 20
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 13
- 239000010453 quartz Substances 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 39
- 238000000034 method Methods 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 11
- 230000002238 attenuated effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 101100536250 Homo sapiens TMEM120A gene Proteins 0.000 description 3
- 102100028548 Ion channel TACAN Human genes 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
- H03B5/1841—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a strip line resonator
- H03B5/1847—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a strip line resonator the active element in the amplifier being a semiconductor device
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/326—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator being an acoustic wave device, e.g. SAW or BAW device
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
- H03D7/125—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes with field effect transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6403—Programmable filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
- H03J5/0254—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being transfered to a D/A converter
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
- H03B5/362—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device the amplifier being a single transistor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
- H03H9/14508—Polyphase SAW transducers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Superheterodyne Receivers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/813,137 US4162452A (en) | 1977-07-05 | 1977-07-05 | Channel selection for a television receiver having low-gain high frequency RF-IF section |
| US05/813,202 US4162451A (en) | 1977-07-05 | 1977-07-05 | MESFET-device surface-wave-device channel selector |
| US05/813,198 US4408347A (en) | 1977-07-29 | 1977-07-29 | High-frequency channel selector having fixed bandpass filters in the RF section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2829538A1 true DE2829538A1 (de) | 1979-01-25 |
Family
ID=27420087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19782829538 Ceased DE2829538A1 (de) | 1977-07-05 | 1978-07-05 | Kanalfilteranordnung und damit ausgestatteter kanalwaehler fuer einen fernsehempfaenger |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5418208A (fr) |
| BR (1) | BR7804326A (fr) |
| CA (1) | CA1110356A (fr) |
| DE (1) | DE2829538A1 (fr) |
| FR (1) | FR2408944B1 (fr) |
| GB (1) | GB2000926B (fr) |
| NL (1) | NL7807307A (fr) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3821716A1 (de) * | 1988-06-28 | 1990-01-04 | Telefunken Electronic Gmbh | Fernsehtuner mit einer bandfilterschaltung |
| DE3821715A1 (de) * | 1988-06-28 | 1990-01-04 | Telefunken Electronic Gmbh | Eingangsschaltung eines fernsehtuners |
| DE3933006A1 (de) * | 1988-10-03 | 1990-04-05 | Hitachi Ltd | Akustische oberflaechenwellenvorrichtung und verfahren zu deren herstellung und anpassung |
| US5175711A (en) * | 1988-10-03 | 1992-12-29 | Hitachi, Ltd. | Surface acoustic wave apparatus and method of productivity and adjustment of the same |
| DE4228834A1 (de) * | 1992-08-29 | 1994-03-03 | Thomson Brandt Gmbh | Verfahren und Vorrichtung zum Abgleich einer PLL Stufe |
| DE4332161A1 (de) * | 1993-09-22 | 1995-03-23 | Thomson Brandt Gmbh | Hochfrequenzempfänger |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5776935A (en) * | 1980-10-29 | 1982-05-14 | Matsushita Electric Ind Co Ltd | Tuner |
| JPS587934A (ja) * | 1981-07-07 | 1983-01-17 | Matsushita Electric Ind Co Ltd | チャンネルコンバ−タ装置 |
| US4408348A (en) * | 1981-08-19 | 1983-10-04 | Rca Corporation | Multiband tuning system for a television receiver |
| US4397037A (en) * | 1981-08-19 | 1983-08-02 | Rca Corporation | Diplexer for television tuning systems |
| JPS58179005A (ja) * | 1982-04-14 | 1983-10-20 | Toshiba Corp | コンバ−タ装置 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1142631B (de) * | 1959-07-15 | 1963-01-24 | Loewe Opta Ag | Fernsehempfangsschaltung |
| DE2334570B1 (de) * | 1973-07-07 | 1975-03-06 | Philips Patentverwaltung | Abstimmbare Hochfrequenz-Eingangsschaltungsanordnung fuer einen Fernsehempfaenger |
| DE2447814A1 (de) * | 1973-10-12 | 1975-04-17 | Philips Nv | Akustische oberflaechenwellenanordnungen |
| DE2625546A1 (de) * | 1975-06-09 | 1976-12-23 | Western Electric Co | Uebertragungsglied fuer akustische wellen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3686518A (en) * | 1970-09-02 | 1972-08-22 | Clinton S Hartmann | Unidirectional surface wave transducers |
| US3787612A (en) * | 1972-07-03 | 1974-01-22 | Zenith Radio Corp | Signal processing system for television receiver having acoustic surface wave devices for improved tuning and video demodulation |
| US3946342A (en) * | 1973-08-10 | 1976-03-23 | Texas Instruments Incorporated | Weighting surface wave filters by withdrawing electrodes |
| FR2263635A1 (en) * | 1974-03-05 | 1975-10-03 | Oak Holland Bv | High stability frequency converter - uses three mixing circuits and a quartz controlled pilot oscillator |
| US3942120A (en) * | 1974-07-22 | 1976-03-02 | Texas Instruments Incorporated | SWD FM receiver circuit |
-
1978
- 1978-06-09 GB GB7826602A patent/GB2000926B/en not_active Expired
- 1978-06-22 CA CA305,989A patent/CA1110356A/fr not_active Expired
- 1978-07-05 FR FR7819988A patent/FR2408944B1/fr not_active Expired
- 1978-07-05 NL NL7807307A patent/NL7807307A/xx not_active Application Discontinuation
- 1978-07-05 BR BR7804326A patent/BR7804326A/pt unknown
- 1978-07-05 DE DE19782829538 patent/DE2829538A1/de not_active Ceased
- 1978-07-05 JP JP8249678A patent/JPS5418208A/ja active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1142631B (de) * | 1959-07-15 | 1963-01-24 | Loewe Opta Ag | Fernsehempfangsschaltung |
| DE2334570B1 (de) * | 1973-07-07 | 1975-03-06 | Philips Patentverwaltung | Abstimmbare Hochfrequenz-Eingangsschaltungsanordnung fuer einen Fernsehempfaenger |
| DE2447814A1 (de) * | 1973-10-12 | 1975-04-17 | Philips Nv | Akustische oberflaechenwellenanordnungen |
| DE2625546A1 (de) * | 1975-06-09 | 1976-12-23 | Western Electric Co | Uebertragungsglied fuer akustische wellen |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3821716A1 (de) * | 1988-06-28 | 1990-01-04 | Telefunken Electronic Gmbh | Fernsehtuner mit einer bandfilterschaltung |
| DE3821715A1 (de) * | 1988-06-28 | 1990-01-04 | Telefunken Electronic Gmbh | Eingangsschaltung eines fernsehtuners |
| DE3933006A1 (de) * | 1988-10-03 | 1990-04-05 | Hitachi Ltd | Akustische oberflaechenwellenvorrichtung und verfahren zu deren herstellung und anpassung |
| US5175711A (en) * | 1988-10-03 | 1992-12-29 | Hitachi, Ltd. | Surface acoustic wave apparatus and method of productivity and adjustment of the same |
| DE4228834A1 (de) * | 1992-08-29 | 1994-03-03 | Thomson Brandt Gmbh | Verfahren und Vorrichtung zum Abgleich einer PLL Stufe |
| DE4332161A1 (de) * | 1993-09-22 | 1995-03-23 | Thomson Brandt Gmbh | Hochfrequenzempfänger |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2000926A (en) | 1979-01-17 |
| BR7804326A (pt) | 1979-04-03 |
| FR2408944B1 (fr) | 1985-12-06 |
| FR2408944A1 (fr) | 1979-06-08 |
| GB2000926B (en) | 1982-04-28 |
| JPS5418208A (en) | 1979-02-10 |
| NL7807307A (nl) | 1979-01-09 |
| CA1110356A (fr) | 1981-10-06 |
| JPH0121648B2 (fr) | 1989-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE60032336T2 (de) | Mehrspurige integrierte spiralinduktivität | |
| DE2828838C2 (de) | HF-Eingangsschaltung für Fernsehempfänger | |
| DE3230738C2 (de) | Mehrband-Abstimmsystem | |
| DE68915072T2 (de) | Integrierte Halbleiterschaltung für ein Radio. | |
| DE69423684T2 (de) | Verbindungsstruktur zur Übersprechverringerung um die Chip-Ausgangsselektivität zu verbessern | |
| DE19647383C2 (de) | Spannungsgesteuerte, veränderliche Abstimmschaltung | |
| DE60002642T2 (de) | UHF-Filter mit vier Stufen die über eine gemeinsame Steuerspannung einstellbar sind | |
| DE3342726A1 (de) | Einstellbare breitband-phasenmodulationsschaltung | |
| DE2142660A1 (de) | Abstimm- und Empfangsfeldstärke-Anzeigeschaltung | |
| DE3875661T2 (de) | Fernseh-hf-eingangsschaltung. | |
| DE2125341A1 (de) | Resonator mit veränderlicher Resonanzfrequenz | |
| DE2829538A1 (de) | Kanalfilteranordnung und damit ausgestatteter kanalwaehler fuer einen fernsehempfaenger | |
| DE69333676T2 (de) | Abstimmschaltung für einen Fernsehempfänger | |
| DE68929130T2 (de) | UHF-RF-Signaleingangsschaltung | |
| DE3015680C2 (de) | Schaltungsanordnung für einen VHF/UHF-Breitband-Doppelüberlagerungsempfänger in Mikrostreifenleitungstechnik | |
| DE2813790A1 (de) | Fernsehtuner | |
| DE1466237B1 (de) | Schaltung zur Erzeugung einer verstaerkten Niederfrequenzschwingung aus einer phasen- und/oder frequenzmodulierten Traegerschwingung | |
| DE3650640T2 (de) | Abstimmschaltung | |
| DE2841892A1 (de) | Oberflaechenwellen-filter | |
| DE69616105T2 (de) | Abstimmschaltung für Empfangsgerät insbesondere Fernsehempfänger | |
| DE3227087A1 (de) | Impedanztransformationsschaltung fuer ein akustisches oberflaechenwellenfilter | |
| DE2238246A1 (de) | Fernsehempfaenger mit synchrondetektor | |
| DE2733191C2 (fr) | ||
| DE102014107513B4 (de) | Verstärker für Fernsehtuner-Chip und Verfahren dafür | |
| DE2843977C2 (de) | Schaltungsanordnung zum Gewinnen der Tonsignale aus einem Fernsehsignal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8131 | Rejection |