JPS5585176A - Noise suppression unit - Google Patents

Noise suppression unit

Info

Publication number
JPS5585176A
JPS5585176A JP15978578A JP15978578A JPS5585176A JP S5585176 A JPS5585176 A JP S5585176A JP 15978578 A JP15978578 A JP 15978578A JP 15978578 A JP15978578 A JP 15978578A JP S5585176 A JPS5585176 A JP S5585176A
Authority
JP
Japan
Prior art keywords
phase
phase detector
noise
detector
circuit
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
JP15978578A
Other languages
Japanese (ja)
Other versions
JPS6223506B2 (en
Inventor
Mitsuo Isobe
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 JP15978578A priority Critical patent/JPS5585176A/en
Publication of JPS5585176A publication Critical patent/JPS5585176A/en
Publication of JPS6223506B2 publication Critical patent/JPS6223506B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE: To enable to constitute the circuit in DC coupling, by detecting noise from the output of phase detector.
CONSTITUTION: The first phase detector 4 operated at orthogonal phase to VIF signal, and the second phase detector 5 operates in-phase. Accordingly, video signal is obtained from the phase detector 5 and a given DC voltage not in response to the amplitude of VIF is obtained from the phase detector 4 according to the phase difference of two signals. Since RF impulsive noise can change the amplitude and phase of RF signal, DC voltage in response to the noise is produced at the output of the phase detector 4. Accordingly, the noise detector 7 can be coupled in DC to the phase detector and circuit integration of the circuit can be realized.
COPYRIGHT: (C)1980,JPO&Japio
JP15978578A 1978-12-22 1978-12-22 Noise suppression unit Granted JPS5585176A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15978578A JPS5585176A (en) 1978-12-22 1978-12-22 Noise suppression unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15978578A JPS5585176A (en) 1978-12-22 1978-12-22 Noise suppression unit

Publications (2)

Publication Number Publication Date
JPS5585176A true JPS5585176A (en) 1980-06-26
JPS6223506B2 JPS6223506B2 (en) 1987-05-23

Family

ID=15701211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15978578A Granted JPS5585176A (en) 1978-12-22 1978-12-22 Noise suppression unit

Country Status (1)

Country Link
JP (1) JPS5585176A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06509923A (en) * 1992-06-12 1994-11-02 サムスン エレクトロニクス カンパニー リミテッド Noise reduction apparatus and method for television receivers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926244A (en) * 1972-07-04 1974-03-08
JPS51100632A (en) * 1975-03-03 1976-09-06 Matsushita Electric Ind Co Ltd

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926244A (en) * 1972-07-04 1974-03-08
JPS51100632A (en) * 1975-03-03 1976-09-06 Matsushita Electric Ind Co Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06509923A (en) * 1992-06-12 1994-11-02 サムスン エレクトロニクス カンパニー リミテッド Noise reduction apparatus and method for television receivers

Also Published As

Publication number Publication date
JPS6223506B2 (en) 1987-05-23

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