JPS5593377A - Sn ratio improving unit - Google Patents

Sn ratio improving unit

Info

Publication number
JPS5593377A
JPS5593377A JP200379A JP200379A JPS5593377A JP S5593377 A JPS5593377 A JP S5593377A JP 200379 A JP200379 A JP 200379A JP 200379 A JP200379 A JP 200379A JP S5593377 A JPS5593377 A JP S5593377A
Authority
JP
Japan
Prior art keywords
signal
noise
video signal
ratio
slicing
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
JP200379A
Other languages
Japanese (ja)
Inventor
Katsuhiko Yamamoto
Hiroshi Kitaura
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 JP200379A priority Critical patent/JPS5593377A/en
Publication of JPS5593377A publication Critical patent/JPS5593377A/en
Pending legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To obtain the video signal improving the SN ratio, by picking up the high band of video signal wrong in SN ratio, slicing the fine noise included in the base of the signal with the slice circuit, and adding it with the low band of the video signal again.
CONSTITUTION: When the video signal is inputted, the output a delayed for T at the delay line 2 and the signal b not including noise component in which the high part is cut through the low pass filter 1, are fed to the differential amplifier 3. The output signal c which is the difference between the both signals is the signal representing the profile and includes noise. After obtaining the signal d without noise by slicing the noise present at the base by means of the slice circuit 4, it is added with the signal through the low pass filter 1 at the adder 5 and the signal f rejecting noise from the original signal wrong in SN can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP200379A 1979-01-10 1979-01-10 Sn ratio improving unit Pending JPS5593377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP200379A JPS5593377A (en) 1979-01-10 1979-01-10 Sn ratio improving unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP200379A JPS5593377A (en) 1979-01-10 1979-01-10 Sn ratio improving unit

Publications (1)

Publication Number Publication Date
JPS5593377A true JPS5593377A (en) 1980-07-15

Family

ID=11517227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP200379A Pending JPS5593377A (en) 1979-01-10 1979-01-10 Sn ratio improving unit

Country Status (1)

Country Link
JP (1) JPS5593377A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60134670A (en) * 1983-11-28 1985-07-17 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Video signal processor
EP0492462A2 (en) * 1990-12-20 1992-07-01 Sanyo Electric Co., Ltd. Waveform detecting circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60134670A (en) * 1983-11-28 1985-07-17 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Video signal processor
JPH0697781B2 (en) * 1983-11-28 1994-11-30 アールシーエー トムソン ライセンシング コーポレイシヨン Video signal processor
EP0492462A2 (en) * 1990-12-20 1992-07-01 Sanyo Electric Co., Ltd. Waveform detecting circuit
EP0492462B1 (en) * 1990-12-20 1996-03-06 Sanyo Electric Co., Ltd. Waveform detecting circuit

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