SE423013B - Radiomottagare av flerbandstyp med elektronisk avstemning - Google Patents
Radiomottagare av flerbandstyp med elektronisk avstemningInfo
- Publication number
- SE423013B SE423013B SE8001394A SE8001394A SE423013B SE 423013 B SE423013 B SE 423013B SE 8001394 A SE8001394 A SE 8001394A SE 8001394 A SE8001394 A SE 8001394A SE 423013 B SE423013 B SE 423013B
- Authority
- SE
- Sweden
- Prior art keywords
- signal
- channel selection
- voltage
- frequency
- band
- Prior art date
Links
- 238000010408 sweeping Methods 0.000 claims description 13
- 230000010355 oscillation Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000003415 peat Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 10
- 230000007704 transition Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 230000000994 depressogenic effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000881 depressing effect Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001960 triggered effect 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
- H03J7/06—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 counters or frequency dividers
-
- 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
- H03J5/0263—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 the digital values being held in an auxiliary non erasable memory
-
- 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
- H03J5/24—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/246—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection using electronic means
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Circuits Of Receivers In General (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53010133A JPS5833724B2 (ja) | 1978-01-31 | 1978-01-31 | 電子同調ラジオ受信機 |
JP1142978U JPS5830329Y2 (ja) | 1978-01-31 | 1978-01-31 | スイツチング回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8001394L SE8001394L (sv) | 1980-02-22 |
SE423013B true SE423013B (sv) | 1982-04-05 |
Family
ID=26345338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8001394A SE423013B (sv) | 1978-01-31 | 1980-02-22 | Radiomottagare av flerbandstyp med elektronisk avstemning |
Country Status (10)
Country | Link |
---|---|
US (1) | US4313214A (fr) |
EP (1) | EP0011646B1 (fr) |
AU (1) | AU511400B2 (fr) |
CA (1) | CA1142660A (fr) |
CH (1) | CH648164A5 (fr) |
DE (1) | DE2934892A1 (fr) |
GB (1) | GB2040130B (fr) |
NL (1) | NL189020C (fr) |
SE (1) | SE423013B (fr) |
WO (1) | WO1979000570A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4291413A (en) * | 1979-09-28 | 1981-09-22 | Rca Corporation | Search type tuning system with direct address channel selection apparatus |
CA1158373A (fr) * | 1980-03-19 | 1983-12-06 | Koji Terami | Dispositif selecteur de stations |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3931579A (en) * | 1974-04-01 | 1976-01-06 | Zenith Radio Corporation | Digital signal seeking tuning system |
US3971991A (en) * | 1974-09-04 | 1976-07-27 | Zenith Radio Corporation | Television tuning system with varactor malfunction detection |
US3943449A (en) * | 1974-09-09 | 1976-03-09 | Zenith Radio Corporation | Multi-speed ramp for a varactor tuning system |
GB1521900A (en) * | 1974-09-25 | 1978-08-16 | Texas Instruments Inc | Radio set tuning system |
US4053838A (en) * | 1974-12-24 | 1977-10-11 | Fujitsu Ten Limited | Radio receiver |
US4081752A (en) * | 1975-05-30 | 1978-03-28 | Sanyo Electric Co., Ltd. | Digital frequency synthesizer receiver |
US4207529A (en) * | 1976-04-08 | 1980-06-10 | Fujitsu Ten Limited | Radio receiver |
JPS52123115A (en) * | 1976-04-09 | 1977-10-17 | Fujitsu Ten Ltd | Automatic channel selector |
JPS5319707A (en) * | 1976-08-06 | 1978-02-23 | Fujitsu Ten Ltd | Double band automatic tuning receiver |
JPS5380108A (en) * | 1976-12-24 | 1978-07-15 | Fujitsu Ten Ltd | Automatic channel selecting receiver |
-
1979
- 1979-01-23 AU AU43574/79A patent/AU511400B2/en not_active Expired
- 1979-01-23 CA CA000320136A patent/CA1142660A/fr not_active Expired
- 1979-01-29 CH CH8935/79A patent/CH648164A5/de not_active IP Right Cessation
- 1979-01-29 WO PCT/JP1979/000019 patent/WO1979000570A1/fr unknown
- 1979-01-29 GB GB8004175A patent/GB2040130B/en not_active Expired
- 1979-01-29 DE DE792934892A patent/DE2934892A1/de not_active Ceased
- 1979-01-30 NL NLAANVRAGE7900715,A patent/NL189020C/xx not_active IP Right Cessation
- 1979-08-28 EP EP79900135A patent/EP0011646B1/fr not_active Expired
- 1979-09-24 US US06/217,322 patent/US4313214A/en not_active Expired - Lifetime
-
1980
- 1980-02-22 SE SE8001394A patent/SE423013B/sv not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0011646A1 (fr) | 1980-06-11 |
GB2040130B (en) | 1983-03-30 |
CH648164A5 (de) | 1985-02-28 |
CA1142660A (fr) | 1983-03-08 |
GB2040130A (en) | 1980-08-20 |
EP0011646A4 (fr) | 1980-06-10 |
NL189020B (nl) | 1992-07-01 |
SE8001394L (sv) | 1980-02-22 |
US4313214A (en) | 1982-01-26 |
NL7900715A (nl) | 1979-08-02 |
DE2934892A1 (en) | 1980-12-04 |
AU511400B2 (en) | 1980-08-14 |
AU4357479A (en) | 1979-08-09 |
NL189020C (nl) | 1992-12-01 |
WO1979000570A1 (fr) | 1979-08-23 |
EP0011646B1 (fr) | 1982-09-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3973206A (en) | Monitoring system for voltage tunable receivers and converters utilizing an analog function generator | |
US2999925A (en) | Variable decision threshold computer | |
GB1404187A (en) | Channel selector with control by binary memory circuit | |
FI75954C (fi) | Eftersoekande avstaemningssystem med direkt vaeljaranordning foer adresskanal. | |
US3860874A (en) | Receiver for dfsk signals | |
CA1039868A (fr) | Systeme automatique de syntonisation sur voie | |
SE427229B (sv) | Anordning for astadkommande av en styrsignal ner en radiofrekvenssignalmottagare er avstemd till en vald radiofrekvenssignals mittfrekvens | |
SE423013B (sv) | Radiomottagare av flerbandstyp med elektronisk avstemning | |
US3478170A (en) | Modulation system for converting analogue signals to a pulse amplitude to pulse width to a binary output | |
US2376034A (en) | Facsimile apparatus | |
US4156198A (en) | Keyboard channel selection for television receivers | |
GB1573224A (en) | Tuning circuits for communications receivers | |
US3750028A (en) | Tuning system | |
US3327304A (en) | Command generator for remote control systems | |
SE458976B (sv) | Flerstationsmottagare | |
US4348770A (en) | Manual channel selection apparatus | |
US4064461A (en) | Receiver including a station finding circuit | |
CA1127782A (fr) | Dispositif de selection de canaux accordable rapidement | |
US1937640A (en) | Means for preventing bias in telegraph systems | |
US3271682A (en) | Doppler-shift corrector for single sideband communications systems | |
GB1505401A (en) | Combination of an indicating device and a tuning apparatu | |
JPH022330B2 (fr) | ||
US2214642A (en) | Channel extension in telegraph systems | |
JPS55104119A (en) | Receiver having automatic station search function | |
JPS592406B2 (ja) | テレビジヨンドウチヨウシステム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAL | Patent in force |
Ref document number: 8001394-9 Format of ref document f/p: F |
|
NUG | Patent has lapsed |
Ref document number: 8001394-9 Format of ref document f/p: F |