CA2053966C - Adaptive deemphasis and reemphasis of high frequencies in a video signal - Google Patents

Adaptive deemphasis and reemphasis of high frequencies in a video signal

Info

Publication number
CA2053966C
CA2053966C CA002053966A CA2053966A CA2053966C CA 2053966 C CA2053966 C CA 2053966C CA 002053966 A CA002053966 A CA 002053966A CA 2053966 A CA2053966 A CA 2053966A CA 2053966 C CA2053966 C CA 2053966C
Authority
CA
Canada
Prior art keywords
frequency portion
high frequency
luminance signal
signal
level
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.)
Expired - Fee Related
Application number
CA002053966A
Other languages
English (en)
French (fr)
Other versions
CA2053966A1 (en
Inventor
Christopher H. Strolle
Werner F. Wedam
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of CA2053966A1 publication Critical patent/CA2053966A1/en
Application granted granted Critical
Publication of CA2053966C publication Critical patent/CA2053966C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • 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
    • H04N9/797—Processing of colour television signals in connection with recording for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal
    • H04N9/7976—Processing of colour television signals in connection with recording for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal by spectrum folding of the high frequency components of the luminance signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
    • 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
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal

Landscapes

  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Television Signal Processing For Recording (AREA)
  • Picture Signal Circuits (AREA)
  • Semiconductor Lasers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Processing Of Color Television Signals (AREA)
  • Holo Graphy (AREA)
  • Television Systems (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Details Of Television Scanning (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Developing Agents For Electrophotography (AREA)
CA002053966A 1990-10-26 1991-10-22 Adaptive deemphasis and reemphasis of high frequencies in a video signal Expired - Fee Related CA2053966C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US60449390A 1990-10-26 1990-10-26
US07/604,493 1990-10-26

Publications (2)

Publication Number Publication Date
CA2053966A1 CA2053966A1 (en) 1992-04-27
CA2053966C true CA2053966C (en) 1997-04-22

Family

ID=24419822

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002053966A Expired - Fee Related CA2053966C (en) 1990-10-26 1991-10-22 Adaptive deemphasis and reemphasis of high frequencies in a video signal

Country Status (11)

Country Link
EP (2) EP0698997B1 (enExample)
JP (1) JP2672422B2 (enExample)
KR (1) KR940001422B1 (enExample)
CN (1) CN1030956C (enExample)
AT (2) ATE138522T1 (enExample)
CA (1) CA2053966C (enExample)
DE (3) DE69119693T2 (enExample)
DK (1) DK0482945T3 (enExample)
ES (1) ES2089150T3 (enExample)
PT (1) PT99332A (enExample)
TW (1) TW242212B (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930010356B1 (ko) * 1991-06-27 1993-10-16 삼성전자 주식회사 동적응재생회로

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230467B (de) * 1960-12-19 1966-12-15 Minnesota Mining & Mfg Einrichtung zur Verbesserung des Verhaeltnisses von Signalspannung zu Rauschspannung bei der UEbertragung oder magnetischen Speicherung von elektrischen Signalen
JPS5551938A (en) * 1978-10-06 1980-04-16 Nissan Motor Co Ltd Exhaust gas refluxing device for internal combustion engine
JPS55117712A (en) * 1979-02-28 1980-09-10 Matsushita Electric Ind Co Ltd Noise reduction circuit of video signal recording and reproducing device
JPS60152646A (ja) * 1984-01-23 1985-08-10 Kobe Steel Ltd 半導体用リ−ドフレ−ム材
JPS6236991A (ja) * 1985-08-12 1987-02-17 Hitachi Ltd クリツプ補償回路
US4831463A (en) * 1987-01-30 1989-05-16 Faroudja Y C Video processing in which high frequency luminance components are folded into a mid-band spectrum

Also Published As

Publication number Publication date
KR920017069A (ko) 1992-09-26
KR940001422B1 (ko) 1994-02-23
DE69132194T2 (de) 2000-10-05
PT99332A (pt) 1993-12-31
ES2089150T3 (es) 1996-10-01
EP0698997A2 (en) 1996-02-28
ATE138522T1 (de) 1996-06-15
EP0482945A3 (en) 1993-03-03
DE69119693D1 (de) 1996-06-27
DE69119693T2 (de) 1996-11-28
DE69132194D1 (de) 2000-06-15
CN1030956C (zh) 1996-02-07
EP0698997A3 (enExample) 1996-03-13
DK0482945T3 (da) 1996-06-24
JPH04284788A (ja) 1992-10-09
EP0482945A2 (en) 1992-04-29
JP2672422B2 (ja) 1997-11-05
CA2053966A1 (en) 1992-04-27
CN1061125A (zh) 1992-05-13
TW242212B (enExample) 1995-03-01
ATE192888T1 (de) 2000-05-15
EP0698997B1 (en) 2000-05-10
DE9117171U1 (de) 1996-09-12
EP0482945B1 (en) 1996-05-22

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