NL179174B - Heterodyne ontvanger. - Google Patents
Heterodyne ontvanger.Info
- Publication number
- NL179174B NL179174B NLAANVRAGE7901954,A NL7901954A NL179174B NL 179174 B NL179174 B NL 179174B NL 7901954 A NL7901954 A NL 7901954A NL 179174 B NL179174 B NL 179174B
- Authority
- NL
- Netherlands
- Prior art keywords
- heterodyne receiver
- heterodyne
- receiver
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/02—Indicating arrangements
- H03J1/04—Indicating arrangements with optical indicating means
- H03J1/045—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like
- H03J1/047—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's
- H03J1/048—Indication of the tuning band, the bandwidth, tone control, the channel number, the frequency, or the like using electronic means, e.g. LED's with digital indication
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/12—Electrically-operated arrangements for indicating correct tuning
- H03J3/14—Visual indication, e.g. magic eye
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2969378A JPS5823020B2 (ja) | 1978-03-13 | 1978-03-13 | ラジオ受信機の受信周波数表示回路 |
JP3316478U JPS5822349Y2 (ja) | 1978-03-13 | 1978-03-13 | 受信機の受信周波数表示回路 |
Publications (3)
Publication Number | Publication Date |
---|---|
NL7901954A NL7901954A (nl) | 1979-09-17 |
NL179174B true NL179174B (nl) | 1986-02-17 |
NL179174C NL179174C (nl) | 1986-07-16 |
Family
ID=26367929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NLAANVRAGE7901954,A NL179174C (nl) | 1978-03-13 | 1979-03-12 | Heterodyne ontvanger. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4247950A (nl) |
DE (1) | DE2909784C2 (nl) |
FR (1) | FR2420247B1 (nl) |
NL (1) | NL179174C (nl) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3618782A1 (de) * | 1986-06-04 | 1987-12-10 | Blaupunkt Werke Gmbh | Hochfrequenzempfaenger mit einer digitalen anzeige der empfangsfrequenz |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3244983A (en) * | 1963-03-06 | 1966-04-05 | Gen Dynamics Corp | Continuously tunable direct reading high frequency converter |
DE1466222C3 (de) * | 1965-10-20 | 1974-03-21 | C.Plath Gmbh Nautisch-Elektronische Technik, 2000 Hamburg | Verfahren zur Erhöhung der Einstellgenauigkeit eines Überlagerungsempfängers mit digitaler Anzeige |
US3753119A (en) * | 1971-04-07 | 1973-08-14 | Magnavox Co | Digital tuning indicator |
US3758853A (en) * | 1972-03-20 | 1973-09-11 | Heath Co | Method of and apparatus for determining a tuned frequency |
DE2217210C3 (de) * | 1972-04-10 | 1978-10-12 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Überlagerungsempfänger mit digitaler Anzeige der Empfangsfrequenz |
JPS551737B2 (nl) * | 1974-05-17 | 1980-01-16 | ||
US4163943A (en) * | 1976-06-14 | 1979-08-07 | Matsushita Electric Industrial Co., Ltd. | Radio receiver employing premixing and digital display |
-
1979
- 1979-03-02 US US06/017,061 patent/US4247950A/en not_active Expired - Lifetime
- 1979-03-12 FR FR7906299A patent/FR2420247B1/fr not_active Expired
- 1979-03-12 NL NLAANVRAGE7901954,A patent/NL179174C/nl not_active IP Right Cessation
- 1979-03-13 DE DE2909784A patent/DE2909784C2/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL7901954A (nl) | 1979-09-17 |
DE2909784A1 (de) | 1979-09-20 |
DE2909784C2 (de) | 1983-09-29 |
FR2420247B1 (fr) | 1986-03-21 |
US4247950A (en) | 1981-01-27 |
NL179174C (nl) | 1986-07-16 |
FR2420247A1 (fr) | 1979-10-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NO793462L (no) | Fitting. | |
NL190178C (nl) | Televisie-ontvanger. | |
NL187883C (nl) | Am-ontvanger. | |
NL193128B (nl) | Afstemeenheid. | |
NL7901383A (nl) | Meervoudig toegankelijke fac-simile ontvanger. | |
NL7802396A (nl) | Ontvanger. | |
DK429179A (da) | 2-propyl-pent-4-en-1-al. | |
IT7927341A0 (it) | Rivelatore. | |
IT7920295A0 (it) | Rivelatore. | |
NL7902465A (nl) | Gesubstitueerde n-iminomethylpiperidinen. | |
NL7906656A (nl) | Gesubstitueerde aminoalkylguanidinen. | |
NL179174C (nl) | Heterodyne ontvanger. | |
IT7925742A0 (it) | Complesso ricevitore. | |
ES237110Y (es) | Apero de labranza. | |
MX9203230A (es) | Compuestos de rifamizina. | |
NO783367L (no) | Not. | |
IT7823547V0 (it) | Ancora. | |
ES236935Y (es) | Muneco mejorado. | |
ES239255Y (es) | Mesa-barbacoa. | |
ES235033Y (es) | Remolque-abonadora. | |
ES237578Y (es) | Frotador-abrillantador. | |
ES237373Y (es) | Porta-esquies. | |
ES236859Y (es) | Caja - embalaje. | |
ES236858Y (es) | Caja-embalaje. | |
ES236556Y (es) | Expositor-expendedor. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A1A | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
A85 | Still pending on 85-01-01 | ||
SNR | Assignments of patents or rights arising from examined patent applications |
Owner name: SANYO ELECTRIC CO., LTD. |
|
V4 | Discontinued because of reaching the maximum lifetime of a patent |
Free format text: 19990312 |