JPS5560328A - Tuning-point detection circuit of am radio receiver - Google Patents

Tuning-point detection circuit of am radio receiver

Info

Publication number
JPS5560328A
JPS5560328A JP13346678A JP13346678A JPS5560328A JP S5560328 A JPS5560328 A JP S5560328A JP 13346678 A JP13346678 A JP 13346678A JP 13346678 A JP13346678 A JP 13346678A JP S5560328 A JPS5560328 A JP S5560328A
Authority
JP
Japan
Prior art keywords
intermediate frequency
detection circuit
narrow
detecting
detection output
Prior art date
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.)
Granted
Application number
JP13346678A
Other languages
Japanese (ja)
Other versions
JPS6046569B2 (en
Inventor
Hideo Harada
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.)
Sony Corp
Original Assignee
Sony Corp
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.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP13346678A priority Critical patent/JPS6046569B2/en
Publication of JPS5560328A publication Critical patent/JPS5560328A/en
Publication of JPS6046569B2 publication Critical patent/JPS6046569B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE: To detect a tuning point through definite operation with circuit constitution simplified by changing a swithc over to the side of a narrow-band intermediate frequency filter in channel selection, by detecting the direct-current component of detection output from a detection circuit by a detector, and by detecting the tuning point by this detection output.
CONSTITUTION: Switch 26 is changed over in accordance with a reception state by providing broad-band intermediate frequency filter 18, narrow-band intermediate frequency filter 11, switch 26 which supplies an intermediate frequency signal from frequency converter circuit 25 to broad-band and narrow-band intermediate frequency filters 18 and 11 by switching, and detection circuit 15 supplied with outputs of filters 18 and 11. Then, detector 27 detecting the direct-current component of the detection output of detection circuit 15 is provided and in channel selection, switch 26 is changed over to the side of narrow-band intermediate frequency filter 11, thereby detecting a tuning point by the detection output of detector 27.
COPYRIGHT: (C)1980,JPO&Japio
JP13346678A 1978-10-30 1978-10-30 AM radio receiver tuning point detection circuit Expired JPS6046569B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13346678A JPS6046569B2 (en) 1978-10-30 1978-10-30 AM radio receiver tuning point detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13346678A JPS6046569B2 (en) 1978-10-30 1978-10-30 AM radio receiver tuning point detection circuit

Publications (2)

Publication Number Publication Date
JPS5560328A true JPS5560328A (en) 1980-05-07
JPS6046569B2 JPS6046569B2 (en) 1985-10-16

Family

ID=15105433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13346678A Expired JPS6046569B2 (en) 1978-10-30 1978-10-30 AM radio receiver tuning point detection circuit

Country Status (1)

Country Link
JP (1) JPS6046569B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753135A (en) * 1980-09-16 1982-03-30 Toshiba Corp Channel selecting device
JPS5772632U (en) * 1980-10-20 1982-05-04
JPS5794237U (en) * 1980-11-28 1982-06-10
JPS5899929U (en) * 1981-12-24 1983-07-07 パイオニア株式会社 receiving device
JPS6016717A (en) * 1984-06-21 1985-01-28 Matsushita Electric Ind Co Ltd Afc device
JPS6032832U (en) * 1983-08-09 1985-03-06 パイオニア株式会社 Receiver automatic channel selection device
JPS61161816A (en) * 1985-01-11 1986-07-22 Sony Corp Radio receiver

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753135A (en) * 1980-09-16 1982-03-30 Toshiba Corp Channel selecting device
JPH022330B2 (en) * 1980-09-16 1990-01-17 Tokyo Shibaura Electric Co
JPS5772632U (en) * 1980-10-20 1982-05-04
JPS5794237U (en) * 1980-11-28 1982-06-10
JPS5899929U (en) * 1981-12-24 1983-07-07 パイオニア株式会社 receiving device
JPS6032832U (en) * 1983-08-09 1985-03-06 パイオニア株式会社 Receiver automatic channel selection device
JPS6016717A (en) * 1984-06-21 1985-01-28 Matsushita Electric Ind Co Ltd Afc device
JPS6234292B2 (en) * 1984-06-21 1987-07-25 Matsushita Electric Ind Co Ltd
JPS61161816A (en) * 1985-01-11 1986-07-22 Sony Corp Radio receiver

Also Published As

Publication number Publication date
JPS6046569B2 (en) 1985-10-16

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