JPS5585174A - Television receiver having fm radio broadcast reception function - Google Patents

Television receiver having fm radio broadcast reception function

Info

Publication number
JPS5585174A
JPS5585174A JP15746478A JP15746478A JPS5585174A JP S5585174 A JPS5585174 A JP S5585174A JP 15746478 A JP15746478 A JP 15746478A JP 15746478 A JP15746478 A JP 15746478A JP S5585174 A JPS5585174 A JP S5585174A
Authority
JP
Japan
Prior art keywords
afc
television receiver
receiver
broadcast reception
radio broadcast
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.)
Pending
Application number
JP15746478A
Other languages
Japanese (ja)
Inventor
Kentaro Hanma
Toshio Murakami
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.)
Hitachi Ltd
Original Assignee
Hitachi 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.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15746478A priority Critical patent/JPS5585174A/en
Publication of JPS5585174A publication Critical patent/JPS5585174A/en
Pending legal-status Critical Current

Links

Landscapes

  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE: To establish low cost TV and FM receiver, by commonly using the AFC circuit for TV receiver for FM detection circuit.
CONSTITUTION: After the received electromagnetic waves are converted into common IF for TV and FM, they are amplified via the separate filters 3, 110. The AFC circuit 90 gives positive or negative voltage to the shift in the frequency and keeps the frequency at the center, and in case of TV, it is stable around ±100kHz. But, at FM reception, distortion is produced at stationary state for the end of ±100kHz. Thus, by obtaining output from the middle point of the DC amplifiers 93, 94 in the AFC circuit 90, the discrimination characteristics α'-β' over ±200kHz can be obtained equivallently. This is obtained because the gain at the closed loop is halved and FM demodulation without distortion can made with AFC characteristics of TV.
COPYRIGHT: (C)1980,JPO&Japio
JP15746478A 1978-12-22 1978-12-22 Television receiver having fm radio broadcast reception function Pending JPS5585174A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15746478A JPS5585174A (en) 1978-12-22 1978-12-22 Television receiver having fm radio broadcast reception function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15746478A JPS5585174A (en) 1978-12-22 1978-12-22 Television receiver having fm radio broadcast reception function

Publications (1)

Publication Number Publication Date
JPS5585174A true JPS5585174A (en) 1980-06-26

Family

ID=15650230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15746478A Pending JPS5585174A (en) 1978-12-22 1978-12-22 Television receiver having fm radio broadcast reception function

Country Status (1)

Country Link
JP (1) JPS5585174A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710828A (en) * 1980-06-25 1982-01-20 Canon Inc Character processor
EP0470484A2 (en) * 1990-08-06 1992-02-12 Thomson Consumer Electronics, Inc. Information radio reception in a television receiver by synthesizing only center frequency
CN1048375C (en) * 1990-08-06 2000-01-12 汤姆森消费电子有限公司 FM trap for television tuner permitting both TV and FM reception through same tuner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5710828A (en) * 1980-06-25 1982-01-20 Canon Inc Character processor
JPS6362005B2 (en) * 1980-06-25 1988-12-01
EP0470484A2 (en) * 1990-08-06 1992-02-12 Thomson Consumer Electronics, Inc. Information radio reception in a television receiver by synthesizing only center frequency
CN1048375C (en) * 1990-08-06 2000-01-12 汤姆森消费电子有限公司 FM trap for television tuner permitting both TV and FM reception through same tuner
CN1048843C (en) * 1990-08-06 2000-01-26 汤姆森消费电子有限公司 Radio reception by synthesizing only center frequency information

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