FR948582A - Perfectionnements aux récepteurs radioélectriques à voies multiples - Google Patents

Perfectionnements aux récepteurs radioélectriques à voies multiples

Info

Publication number: FR948582A
Authority: FR; France
Prior art keywords: radio receiver; multichannel radio; receiver improvements; multichannel; receiver
Prior art date: 1945-08-24
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

Application number

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Decca Record Co Ltd

Original Assignee

Decca Record Co Ltd

Priority date (The priority date 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 date listed.)

1945-08-24

Filing date

1947-06-27

Publication date

1949-08-04

1945-08-24 Priority claimed from GB2169045A external-priority patent/GB620481A/en

1947-06-27 Application filed by Decca Record Co Ltd filed Critical Decca Record Co Ltd

1949-08-04 Application granted granted Critical

1949-08-04 Publication of FR948582A publication Critical patent/FR948582A/fr

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
- G01S1/08—Systems for determining direction or position line
- G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
- G01S1/30—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Computer Networks & Wireless Communication (AREA)
Radar, Positioning & Navigation (AREA)
Remote Sensing (AREA)
Circuits Of Receivers In General (AREA)
Superheterodyne Receivers (AREA)
Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Measuring Phase Differences (AREA)
Analysing Materials By The Use Of Radiation (AREA)
Position Fixing By Use Of Radio Waves (AREA)
Navigation (AREA)

FR948582D 1945-08-24 1947-06-27 Perfectionnements aux récepteurs radioélectriques à voies multiples Expired FR948582A (fr)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
GB2169045A GB620481A (en)	1945-08-24	1945-08-24	Improvements in or relating to radio frequency receiving apparatus
US612991A US2500200A (en)	1945-08-24	1945-08-27	Multiple channel radio-frequency receiver
US71425A US2562329A (en)	1945-08-24	1949-01-18	Double phase comparator circuit
US75681A US2548233A (en)	1945-08-24	1949-02-10	Radio receiving apparatus

Publications (1)

Publication Number	Publication Date
FR948582A true FR948582A (fr)	1949-08-04

Family

ID=32234279

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
FR948582D Expired FR948582A (fr)	1945-08-24	1947-06-27	Perfectionnements aux récepteurs radioélectriques à voies multiples
FR948581D Expired FR948581A (fr)	1945-08-24	1947-06-27	Perfectionnements aux appareils récepteurs à fréquence radioélectrique
FR948583D Expired FR948583A (fr)	1945-08-24	1947-06-27	Perfectionnements aux discriminateurs de phases pour installations radioélectriques

Family Applications After (2)

Application Number	Title	Priority Date	Filing Date
FR948581D Expired FR948581A (fr)	1945-08-24	1947-06-27	Perfectionnements aux appareils récepteurs à fréquence radioélectrique
FR948583D Expired FR948583A (fr)	1945-08-24	1947-06-27	Perfectionnements aux discriminateurs de phases pour installations radioélectriques

Country Status (3)

Country	Link
US (3)	US2500200A (fr)
FR (3)	FR948582A (fr)
GB (2)	GB620508A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2611127A (en) *	1947-10-28	1952-09-16	Sperry Corp	Continuous wave navigation system
US2513318A (en) *	1948-08-05	1950-07-04	Seismograph Service Corp	Radio position finding system
US2551211A (en) *	1949-06-21	1951-05-01	Seismograph Service Corp	Radio position indicating system and apparatus
US2703380A (en) *	1949-09-21	1955-03-01	Sperry Corp	Phase comparison apparatus for data transmission systems
US2794928A (en) *	1949-10-13	1957-06-04	Sperry Rand Corp	Voltage comparison means
US2788489A (en) *	1952-06-10	1957-04-09	John M Hollywood	Phase detecting system
US2974281A (en) *	1957-11-01	1961-03-07	Bell Telephone Labor Inc	Selective signal recognition system
US3079586A (en) *	1957-12-27	1963-02-26	Gunn Ross	Locating and guidance systems for vehicles for air, sea and land
SE327287B (fr) *	1967-02-20	1970-08-17	Kockums Mekaniska Verkstads Ab
US7842725B2 (en)	2008-07-24	2010-11-30	Ecolab USA, Inc.	Foaming alcohol compositions with selected dimethicone surfactants
EP4176031A1 (fr)	2020-07-06	2023-05-10	Ecolab USA Inc.	Compositions à base d'huile de ricin modifiée par peg pour la microémulsification et l'élimination de multiples salissures grasses

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE546000C (de) *	1930-05-20	1932-03-08	Meint Harms Dr	Verfahren einer selbsttaetigen Ortsbestimmung beweglicher Empfaenger
US1957519A (en) *	1931-12-18	1934-05-08	Bell Telephone Labor Inc	Multiple radio receiving system
BE423746A (fr) *	1936-09-24
US2144203A (en) *	1937-09-23	1939-01-17	John P Shanklin	Method for direct indication of position in a given area
FR959092A (fr) *	1938-09-30	1950-03-23
US2281995A (en) *	1939-04-27	1942-05-05	Rca Corp	Phase comparing system
US2318248A (en) *	1940-02-21	1943-05-04	Socony Vacuum Oil Co Inc	Phase meter
US2408773A (en) *	1942-03-31	1946-10-08	Bell Telephone Labor Inc	Position determining system
US2335265A (en) *	1942-07-22	1943-11-30	Scophony Corp Of America	Phase discriminator
US2405073A (en) *	1943-10-28	1946-07-30	Gen Electric	Phase comparator
US2467361A (en) *	1943-10-28	1949-04-12	Gen Electric	Phase comparator

1945
- 1945-08-24 GB GB24989/46A patent/GB620508A/en not_active Expired
- 1945-08-24 GB GB24988/46A patent/GB620507A/en not_active Expired
- 1945-08-27 US US612991A patent/US2500200A/en not_active Expired - Lifetime
1947
- 1947-06-27 FR FR948582D patent/FR948582A/fr not_active Expired
- 1947-06-27 FR FR948581D patent/FR948581A/fr not_active Expired
- 1947-06-27 FR FR948583D patent/FR948583A/fr not_active Expired
1949
- 1949-01-18 US US71425A patent/US2562329A/en not_active Expired - Lifetime
- 1949-02-10 US US75681A patent/US2548233A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
US2562329A (en)	1951-07-31
GB620508A (en)	1949-03-25
GB620507A (en)	1949-03-25
US2500200A (en)	1950-03-14
FR948581A (fr)	1949-08-04
FR948583A (fr)	1949-08-04
US2548233A (en)	1951-04-10

Publication	Publication Date	Title
FR58653E (fr)	1954-03-02	Perfectionnements aux systèmes de communication à voies multiples
FR938705A (fr)	1948-10-22	Perfectionnements aux systèmes de communication à voies multiples
FR948582A (fr)	1949-08-04	Perfectionnements aux récepteurs radioélectriques à voies multiples
FR920587A (fr)	1947-04-11	Perfectionnements aux antennes
FR57766E (fr)	1953-09-09	Perfectionnements aux systèmes de communication à voies multiples
FR942670A (fr)	1949-02-15	Installation de radio-signalisation à voies multiples
FR915892A (fr)	1946-11-20	Perfectionnements aux panémones
FR951261A (fr)	1949-10-20	Systèmes de communications radioélectriques à voies multiples
FR921518A (fr)	1947-05-09	Perfectionnements aux panémones
FR54478E (fr)	1950-05-02	Perfectionnements aux montres-bracelets
FR994896A (fr)	1951-11-23	Perfectionnements aux montres
FR917874A (fr)	1947-01-23	Perfectionnements aux montres-bracelets
FR916831A (fr)	1946-12-17	Perfectionnements aux abat-jour
FR935634A (fr)	1948-06-24	Perfectionnements aux soutien-gorge
FR909225A (fr)	1946-05-02	Perfectionnements aux haut-parleurs
FR917329A (fr)	1947-01-03	Perfectionnements aux stylomines
FR911429A (fr)	1946-07-08	Perfectionnements aux médailliers
FR921790A (fr)	1947-05-19	Perfectionnements aux stylographes
FR932527A (fr)	1948-03-24	Perfectionnement aux armoires
FR936931A (fr)	1948-08-03	Récepteur radiophonique
FR910934A (fr)	1946-06-24	Perfectionnements aux chaussures
FR912539A (fr)	1946-08-12	Perfectionnements aux antennes
FR943709A (fr)	1949-03-16	Perfectionnements aux radio-récepteurs à balayage de fréquence
FR948579A (fr)	1949-08-04	Perfectionnements aux appareils émetteurs à fréquence radioélectrique
FR910800A (fr)	1946-06-18	Perfectionnements aux tarauds extensibles