FR2296333A1 - Upper video spectrum correction cct. - is for SECAM and PAC with magnetic recording systems to replace line drop-outs - Google Patents

Upper video spectrum correction cct. - is for SECAM and PAC with magnetic recording systems to replace line drop-outs

Info

Publication number
FR2296333A1
FR2296333A1 FR7443151A FR7443151A FR2296333A1 FR 2296333 A1 FR2296333 A1 FR 2296333A1 FR 7443151 A FR7443151 A FR 7443151A FR 7443151 A FR7443151 A FR 7443151A FR 2296333 A1 FR2296333 A1 FR 2296333A1
Authority
FR
France
Prior art keywords
secam
magnetic recording
cct
pac
outs
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
FR7443151A
Other languages
French (fr)
Other versions
FR2296333B1 (en
Inventor
Luc Pham Van Cang
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7443151A priority Critical patent/FR2296333A1/en
Publication of FR2296333A1 publication Critical patent/FR2296333A1/en
Application granted granted Critical
Publication of FR2296333B1 publication Critical patent/FR2296333B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/88—Signal drop-out compensation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Systems (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

The upper video spectrum correction circuit, for SECAM and PAL magnetic recording systems, allows dropped-out lines to be replaced with other information and can readily be connected to monochrome or NTSC systems. Correction takes place in two stages. For monochrome or NTSC, the missing part of the video signal is replaced by a preceding line or lines. For SECAM signals, the upper part of the video signal spectrum is replaced for the complete duration of any line. For monochrome, correction takes place by replacing the drop-out line with a preceding line containing the same chromatic information. For PAL systems a variation of the second stage is used.
FR7443151A 1974-12-27 1974-12-27 Upper video spectrum correction cct. - is for SECAM and PAC with magnetic recording systems to replace line drop-outs Granted FR2296333A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7443151A FR2296333A1 (en) 1974-12-27 1974-12-27 Upper video spectrum correction cct. - is for SECAM and PAC with magnetic recording systems to replace line drop-outs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7443151A FR2296333A1 (en) 1974-12-27 1974-12-27 Upper video spectrum correction cct. - is for SECAM and PAC with magnetic recording systems to replace line drop-outs

Publications (2)

Publication Number Publication Date
FR2296333A1 true FR2296333A1 (en) 1976-07-23
FR2296333B1 FR2296333B1 (en) 1981-04-10

Family

ID=9146712

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7443151A Granted FR2296333A1 (en) 1974-12-27 1974-12-27 Upper video spectrum correction cct. - is for SECAM and PAC with magnetic recording systems to replace line drop-outs

Country Status (1)

Country Link
FR (1) FR2296333A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0217646A2 (en) * 1985-09-27 1987-04-08 Ampex Corporation A multi-standard adaptive dropout compensator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0217646A2 (en) * 1985-09-27 1987-04-08 Ampex Corporation A multi-standard adaptive dropout compensator
EP0217646A3 (en) * 1985-09-27 1988-03-09 Ampex Corporation A multi-standard adaptive dropout compensator

Also Published As

Publication number Publication date
FR2296333B1 (en) 1981-04-10

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Legal Events

Date Code Title Description
ST Notification of lapse