JPS51109750A - - Google Patents

Info

Publication number: JPS51109750A
Authority: JP; Japan
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.): Pending

Application number

JP51018537A

Other languages

Japanese (ja)

Inventor

Chichaatoka Antaru

Paaku Rii Henrii

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.)

General Electric Co

Original Assignee

General Electric Co

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.)

1975-02-26

Filing date

1976-02-24

Publication date

1976-09-28

1976-02-24 Application filed by General Electric Co filed Critical General Electric Co

1976-09-28 Publication of JPS51109750A publication Critical patent/JPS51109750A/ja

Status Pending legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/86—Arrangements characterised by the broadcast information itself
- H04H20/88—Stereophonic broadcast systems
- H04H20/89—Stereophonic broadcast systems using three or more audio channels, e.g. triphonic or quadraphonic
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/02—Manually-operated control
- H03G5/14—Manually-operated control in frequency-selective amplifiers

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Signal Processing (AREA)
Noise Elimination (AREA)
Filters And Equalizers (AREA)

JP51018537A 1975-02-26 1976-02-24 Pending JPS51109750A (2)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/553,278 US3991374A (en)	1975-02-26	1975-02-26	Controllable bandwidth IF filter circuit for radio receivers

Publications (1)

Publication Number	Publication Date
JPS51109750A true JPS51109750A (2)	1976-09-28

Family

ID=24208826

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP51018537A Pending JPS51109750A (2)	1975-02-26	1976-02-24

Country Status (3)

Country	Link
US (1)	US3991374A (2)
JP (1)	JPS51109750A (2)
GB (1)	GB1500123A (2)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5610021Y2 (2) *	1975-05-28	1981-03-05
JPS5915141Y2 (ja) *	1976-12-14	1984-05-04	ヤマハ株式会社	チユ−ナの信号切換回路
JPS567541A (en) *	1979-07-02	1981-01-26	Nissan Motor Co Ltd	Fm radio for vehicle
US4352208A (en) *	1980-03-04	1982-09-28	Motorola, Inc.	Automatic IF selectivity for radio receiver system
JPS621441U (2) *	1985-06-20	1987-01-07
GB8810048D0 (en) *	1988-04-28	1988-06-02	Ferguson Ltd	Switching circuity
EP1370016B1 (en) *	2002-06-07	2005-04-20	Sony International (Europe) GmbH	Method and apparatus for the reception of an audio signal transmitted both in analogue and in higher-quality digital modulation, gradually varying the mixing ratio from digital to analogue in case of poor channel conditions, so as to make the change less perceptible
US7272375B2 (en)	2004-06-30	2007-09-18	Silicon Laboratories Inc.	Integrated low-IF terrestrial audio broadcast receiver and associated method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2052703A (en) *	1933-03-07	1936-09-01	Rca Corp	Coupled circuits
US3110004A (en) *	1961-04-21	1963-11-05	Avco Corp	Frequency selector using voltage-sensitive capacitors for tuning and bandwidth control
US3264566A (en) *	1962-07-13	1966-08-02	Gen Instrument Corp	Electronic switching of tuned circuits
US3495031A (en) *	1967-11-01	1970-02-10	Zenith Radio Corp	Variable q i.f. amplifier circuit for a television receiver
US3633119A (en) *	1969-12-24	1972-01-04	Microdyne Corp	Intermediate-frequency amplifier with wide-range continuously variable bandwidth selection

1975
- 1975-02-26 US US05/553,278 patent/US3991374A/en not_active Expired - Lifetime
1976
- 1976-02-06 GB GB4694/76A patent/GB1500123A/en not_active Expired
- 1976-02-24 JP JP51018537A patent/JPS51109750A/ja active Pending

Also Published As

Publication number	Publication date
US3991374A (en)	1976-11-09
GB1500123A (en)	1978-02-08

Publication	Publication Date	Title
JPS5610021Y2 (2)	1981-03-05
JPS5551420B2 (2)	1980-12-24
FR2308602B1 (2)	1977-11-25
JPS5339107Y2 (2)	1978-09-21
JPS5348022B2 (2)	1978-12-26
JPS5229107B2 (2)	1977-07-30
JPS5217173U (2)	1977-02-07
JPS5234255Y2 (2)	1977-08-05
FR2317496B1 (2)	1982-08-27
JPS5445322Y2 (2)	1979-12-25
JPS51140495U (2)	1976-11-12
CH596331A5 (2)	1978-03-15
CH606606A5 (2)	1978-11-15
CH593593A5 (2)	1977-12-15
CH600713A5 (2)	1978-06-30
CH596119A5 (2)	1978-02-28
CH597501A5 (2)	1978-04-14
CH602830A5 (2)	1978-08-15
CH597750A5 (2)	1978-04-14
CH602531A5 (2)	1978-07-31
CH608598A5 (2)	1979-01-15
BG21749A1 (2)	1976-09-20
CH599778A5 (2)	1978-05-31
CH601833A5 (2)	1978-07-14
CH599485B5 (2)	1978-05-31