BE643466A - - Google Patents

Info

Publication number: BE643466A
Authority: BE; Belgium

Application number

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.)

1963-02-07

Filing date

1964-02-06

Publication date

1964-08-06

1964-02-06 Application filed filed Critical

1964-08-06 Publication of BE643466A publication Critical patent/BE643466A/xx

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
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
- H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
- 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
- H03J7/065—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 the counter or frequency divider being used in a phase locked loop
- 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

BE643466D 1963-02-07 1964-02-06 BE643466A (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US256989A US3249876A (en)	1963-02-07	1963-02-07	Precision tracking of electrically tuned circuits

Publications (1)

Publication Number	Publication Date
BE643466A true BE643466A (xx)	1964-08-06

Family

ID=22974439

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE643466D BE643466A (xx)	1963-02-07	1964-02-06

Country Status (5)

Country	Link
US (1)	US3249876A (xx)
BE (1)	BE643466A (xx)
DE (1)	DE1541383A1 (xx)
GB (1)	GB1056701A (xx)
NL (1)	NL6400992A (xx)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3519939A (en) *	1965-09-21	1970-07-07	Matsushita Electric Ind Co Ltd	Automatic tuning receiver with detuning means
US3375463A (en) *	1965-12-17	1968-03-26	Astrodata Inc	Loop filter for phase locked loop frequency detector
DE1516787B1 (de) *	1966-04-01	1969-10-16	Philips Patentverwaltung	Sinusoszillator mit linearer Abhaengigkeit der Frequenz- oder Periodendauer von nur einem passiven Element
US3434057A (en) *	1966-05-02	1969-03-18	Sylvania Electric Prod	Automatic locking receiver
US3440544A (en) *	1966-11-01	1969-04-22	Motorola Inc	Manual,automatic,and semiautomatic tuning circuits utilizing voltage variable capacitance diodes
US3496473A (en) *	1966-11-14	1970-02-17	Gen Dynamics Corp	Automatically tuned communications systems
CH1222869A4 (xx) *	1969-08-12	1972-09-15
US3657654A (en) *	1969-09-11	1972-04-18	Gen Instrument Corp	Communications receiver employing varactor controlled tuning stages
US3662278A (en) *	1970-09-16	1972-05-09	Us Navy	Automatic phase control circuit for tv system
US3727139A (en) *	1971-08-10	1973-04-10	Philco Ford Corp	Voltage supply for voltage variable capacitor diode tuning
US3961285A (en) *	1971-09-23	1976-06-01	International Telephone And Telegraph Corporation	Voltage controlled oscillator driver
US3987400A (en) *	1974-11-04	1976-10-19	Masco Corporation Of Indiana	Multiband scanning radio receiver
US4268915A (en) *	1975-06-02	1981-05-19	Motorola, Inc.	Universal automotive electronic radio with display for tuning or time information
US4135158A (en) *	1975-06-02	1979-01-16	Motorola, Inc.	Universal automotive electronic radio
US4135157A (en) *	1977-03-28	1979-01-16	Oak Industries Inc.	Pole mounted converter
US4384365A (en) *	1978-10-16	1983-05-17	Licentia Patent-Verwaltungs-G.M.B.H.	Superheterodyne receiver frequency tracking circuit
GB2071452B (en) *	1980-02-11	1984-04-04	Decca Ltd	Adjustable and selective electrical filters and methods oftuning them
JPS6318711A (ja) *	1986-07-10	1988-01-26	Toko Inc	電子同調受信機
GB2224406A (en) *	1988-10-21	1990-05-02	Philips Electronic Associated	Filter circuit arrangement
US5926752A (en) *	1998-01-15	1999-07-20	Trw Inc.	Apparatus and method for remote convenience message transmission and control with a tunable filter receiver

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2958768A (en) *	1958-11-03	1960-11-01	Avco Mfg Corp	Electronic servo system for frequency control
US3029339A (en) *	1959-01-26	1962-04-10	Rca Corp	Variable tuning circuit

1963
- 1963-02-07 US US256989A patent/US3249876A/en not_active Expired - Lifetime
1964
- 1964-02-05 GB GB4845/64A patent/GB1056701A/en not_active Expired
- 1964-02-06 BE BE643466D patent/BE643466A/xx unknown
- 1964-02-06 NL NL6400992A patent/NL6400992A/xx unknown
- 1964-02-06 DE DE19641541383 patent/DE1541383A1/de active Pending

Also Published As

Publication number	Publication date
GB1056701A (en)	1967-01-25
NL6400992A (xx)	1964-08-10
DE1541383A1 (de)	1969-09-11
US3249876A (en)	1966-05-03

Publication	Publication Date	Title
BE627012A (xx)
BE31062A (xx)
BE622160A (xx)
BE645472A (xx)	1964-07-16
BE625136A (xx)
BE645120A (xx)	1964-09-14
BE624982A (xx)
BE624811A (xx)
BE644827A (xx)	1964-07-01
BE624070A (xx)
BE623490A (xx)
BE623315A (xx)
BE623220A (xx)
BE644297A (xx)	1964-06-15
BE644186A (xx)	1964-08-21
BE644171A (xx)	1964-06-15
BE623117A (xx)
BE626938A (xx)
BE621517A (xx)
BE643983A (xx)	1964-08-18
BE643981A (xx)	1964-06-15
BE621232A (xx)
BE643884A (xx)
BE620325A (xx)
BE643737A (xx)	1964-05-29