JPS5448118A - Catv head-end device - Google Patents

Catv head-end device

Info

Publication number
JPS5448118A
JPS5448118A JP11502177A JP11502177A JPS5448118A JP S5448118 A JPS5448118 A JP S5448118A JP 11502177 A JP11502177 A JP 11502177A JP 11502177 A JP11502177 A JP 11502177A JP S5448118 A JPS5448118 A JP S5448118A
Authority
JP
Japan
Prior art keywords
circuit
video
ghost
catv head
end device
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
JP11502177A
Other languages
Japanese (ja)
Inventor
Hiroshi Ooyama
Noriyuki Kawamoto
Harumasa Kajita
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 JP11502177A priority Critical patent/JPS5448118A/en
Publication of JPS5448118A publication Critical patent/JPS5448118A/en
Pending legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Details Of Television Systems (AREA)

Abstract

PURPOSE: To ensure transmission of high-quality picture by inserting the ghost reducing circuit to the CATV head-end divice.
CONSTITUTION: The output signal of intermediate frequecny amplifier circuit 15 is detected and amplified through video detector circuit 18 and the video amplidier circuit, and then led to signal process circuit 20 such as the ghost reducing circuit or the like. Then the video signal with the ghost reduced is modulated through molduator circuit 23 and then transmitted to coaxial cable 50 through output terminal 12 and via the amplifier circuit
COPYRIGHT: (C)1979,JPO&Japio
JP11502177A 1977-09-24 1977-09-24 Catv head-end device Pending JPS5448118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11502177A JPS5448118A (en) 1977-09-24 1977-09-24 Catv head-end device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11502177A JPS5448118A (en) 1977-09-24 1977-09-24 Catv head-end device

Publications (1)

Publication Number Publication Date
JPS5448118A true JPS5448118A (en) 1979-04-16

Family

ID=14652272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11502177A Pending JPS5448118A (en) 1977-09-24 1977-09-24 Catv head-end device

Country Status (1)

Country Link
JP (1) JPS5448118A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03222581A (en) * 1990-01-29 1991-10-01 Nec Home Electron Ltd Ghost elimination system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03222581A (en) * 1990-01-29 1991-10-01 Nec Home Electron Ltd Ghost elimination system

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