JPS551772A - Receiver for television signal - Google Patents

Receiver for television signal

Info

Publication number
JPS551772A
JPS551772A JP7507878A JP7507878A JPS551772A JP S551772 A JPS551772 A JP S551772A JP 7507878 A JP7507878 A JP 7507878A JP 7507878 A JP7507878 A JP 7507878A JP S551772 A JPS551772 A JP S551772A
Authority
JP
Japan
Prior art keywords
frequency
input level
circuit
bpf
center frequency
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
JP7507878A
Other languages
Japanese (ja)
Other versions
JPS6155834B2 (en
Inventor
Osamu Shizutani
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7507878A priority Critical patent/JPS551772A/en
Publication of JPS551772A publication Critical patent/JPS551772A/en
Publication of JPS6155834B2 publication Critical patent/JPS6155834B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Details Of Television Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

PURPOSE: To enable to obtain optimum reception picture, by changing the center frequency of FM transmission BPF depending on the input level.
CONSTITUTION: The input level of the television FM wave converted with the second frequency converter 12(taking the frequency as Fo) is detected with the AGC circuit 14 having the input signal level detector, and the output is fed to the voltage correction circuit 17. Further, the output of the circuit 17 is fed to the local oscillator 19 of which oscillating frequency is varied with the applied voltage of the second frequency modulator 12, or to the FM transmission BPF 13 in which the transmission center frequency Fo is changed with the applied voltage. Thus, the circuit 17 is operated so that the center frequency FBO of BPF is located at the region of the hatched parts i with the input level. The lateral axis ΔFBO=FO-FBO. Accordingly, best video quality can always be obtained depending on the input level and greater effect can be made at low input level especially.
COPYRIGHT: (C)1980,JPO&Japio
JP7507878A 1978-06-20 1978-06-20 Receiver for television signal Granted JPS551772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7507878A JPS551772A (en) 1978-06-20 1978-06-20 Receiver for television signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7507878A JPS551772A (en) 1978-06-20 1978-06-20 Receiver for television signal

Publications (2)

Publication Number Publication Date
JPS551772A true JPS551772A (en) 1980-01-08
JPS6155834B2 JPS6155834B2 (en) 1986-11-29

Family

ID=13565781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7507878A Granted JPS551772A (en) 1978-06-20 1978-06-20 Receiver for television signal

Country Status (1)

Country Link
JP (1) JPS551772A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115774U (en) * 1981-01-08 1982-07-17
JPS57135582A (en) * 1981-02-16 1982-08-21 Hitachi Ltd Reception circuit for fm television signal
JPS57135581A (en) * 1981-02-16 1982-08-21 Hitachi Ltd Reception circuit for fm television signal
JPS61257093A (en) * 1985-05-10 1986-11-14 Matsushita Electric Ind Co Ltd Automatic frequency control circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5081214A (en) * 1973-11-17 1975-07-01
JPS5121414A (en) * 1974-08-16 1976-02-20 Hitachi Ltd Tachanerushingono jushinsochi

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5081214A (en) * 1973-11-17 1975-07-01
JPS5121414A (en) * 1974-08-16 1976-02-20 Hitachi Ltd Tachanerushingono jushinsochi

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115774U (en) * 1981-01-08 1982-07-17
JPS6349008Y2 (en) * 1981-01-08 1988-12-16
JPS57135582A (en) * 1981-02-16 1982-08-21 Hitachi Ltd Reception circuit for fm television signal
JPS57135581A (en) * 1981-02-16 1982-08-21 Hitachi Ltd Reception circuit for fm television signal
JPS61257093A (en) * 1985-05-10 1986-11-14 Matsushita Electric Ind Co Ltd Automatic frequency control circuit

Also Published As

Publication number Publication date
JPS6155834B2 (en) 1986-11-29

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