MY123018A - Video signal character converting device and method of the same - Google Patents

Video signal character converting device and method of the same

Info

Publication number
MY123018A
MY123018A MYPI99003065A MYPI9903065A MY123018A MY 123018 A MY123018 A MY 123018A MY PI99003065 A MYPI99003065 A MY PI99003065A MY PI9903065 A MYPI9903065 A MY PI9903065A MY 123018 A MY123018 A MY 123018A
Authority
MY
Malaysia
Prior art keywords
video
signal
video signal
level
sampling
Prior art date
Application number
MYPI99003065A
Inventor
Minoru Kawabata
Atsuhisa Kageyama
Original Assignee
Panasonic Corp
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 Panasonic Corp filed Critical Panasonic Corp
Publication of MY123018A publication Critical patent/MY123018A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Picture Signal Circuits (AREA)
  • Studio Circuits (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Television Systems (AREA)

Abstract

IN A VIDEO SIGNAL CHARACTER CONVERTING DEVICE, A SAMPLING WINDOW SIGNAL GENERATOR GENERATES A SIGNAL FOR SAMPLING AN INPUT VIDEO SIGNAL "A". A VIDEO SCENE AMPLITUDE DISCRIMINATION CIRCUIT (51) SAMPLES THE VIDEO SIGNAL IN RESPONSE TO THE SAMPLING SIGNAL, DETECTS A CHANGE IN IMAGE LEVEL EITHER FIELD BY FIELD OR FRAME BY FRAME BASED ON AN INTEGRATED VALUE FOR EVERY DURATION OF VERTICAL SCANNING, AND OUTPUTS A RESETTING PULSE WHEN THE CHANGE IN PICTURE LEVEL EXCEEDS A PREDETERMINED LEVEL. A VIDEO SCENE PERIODICITY DISCRIMINATION CIRCUIT (52) MEASURES A TIME INTERVAL BETWEEN TWO SUCCESSIVE RESETTING PULSES, AND OUTPUTS A CONTROL SIGNAL IF THE TIME INTERVAL IS SHORTER THAN A PREDETERMINED PERIOD. A VIDEO SCENE CONVERSION CIRCUIT (54) CONVERTS A VIDEO SCENE IN RESPONSE TO THE CONTROL SIGNAL. THE VIDEO SIGNAL CHARACTER DETECTING DEVICE OF THE PRESENT INVENTION DETERMINES AS TO WHETHER OR NOT THE INPUT VIDEO SIGNAL HAS VIDEO IMAGES THAT PRESENT AN ADVERSE EFFECT MENTALLY AND PHYSICALLY TO VIEWERS, BY OBSERVING AN IMAGE LEVEL AND PERIODICITY OF THE VIDEO SIGNAL IN THIS MANNER. THE DEVICE IS THUS ABLE TO OUTPUT VIDEO IMAGES BY CONVERTING THEM INTO A HARMLESS LEVEL WITH A PROCESS OF REDUCING CONTRAST OR BLANKING, IF IT DETERMINES THE VIDEO IMAGES HARMFUL.
MYPI99003065A 1998-07-24 1999-07-21 Video signal character converting device and method of the same MY123018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20892098 1998-07-24

Publications (1)

Publication Number Publication Date
MY123018A true MY123018A (en) 2006-05-31

Family

ID=16564323

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI99003065A MY123018A (en) 1998-07-24 1999-07-21 Video signal character converting device and method of the same

Country Status (10)

Country Link
US (1) US6295095B1 (en)
EP (1) EP1018262B1 (en)
JP (1) JP3551151B2 (en)
KR (1) KR100529421B1 (en)
CN (1) CN1130074C (en)
BR (1) BR9906650A (en)
DE (1) DE69925980T2 (en)
ID (1) ID25868A (en)
MY (1) MY123018A (en)
WO (1) WO2000005877A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100443977B1 (en) 2001-06-14 2004-08-09 삼성전자주식회사 Display apparatus
JP4490914B2 (en) * 2003-03-13 2010-06-30 パナソニック株式会社 Data processing device
JP4031462B2 (en) 2004-04-23 2008-01-09 松下電器産業株式会社 Luminance signal processing device, signal processing device, and luminance signal processing method
KR100799557B1 (en) * 2005-10-27 2008-01-31 한국전자통신연구원 Harmful video discrimination function generation and discrimination method using visual features of video and its device
JP4749139B2 (en) * 2005-12-05 2011-08-17 株式会社日立製作所 Dangerous video detection method, video difference detection method and apparatus
KR100656373B1 (en) * 2005-12-09 2006-12-11 한국전자통신연구원 Harmful video discrimination method and device applying priority and discrimination policy by time section
US7956930B2 (en) * 2006-01-06 2011-06-07 Microsoft Corporation Resampling and picture resizing operations for multi-resolution video coding and decoding
JP5354980B2 (en) * 2008-07-10 2013-11-27 キヤノン株式会社 Image processing apparatus, method, and program
KR101612666B1 (en) * 2012-07-11 2016-04-14 엘지전자 주식회사 Method and apparatus for scanning in wireless lan

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000366A (en) * 1975-03-25 1976-12-28 The United States Of America As Represented By The Secretary Of The Air Force Adaptive gray scale control circuit for television video signals
JP3033587B2 (en) * 1989-11-10 2000-04-17 ソニー株式会社 Automatic image quality adjustment device
JP3019479B2 (en) 1991-06-28 2000-03-13 松下電器産業株式会社 Gradation correction device
JP3143959B2 (en) 1991-07-09 2001-03-07 ソニー株式会社 Level compensation circuit
JP2986642B2 (en) * 1992-05-07 1999-12-06 三菱電機株式会社 Display monitor
JPH0638074A (en) 1992-07-21 1994-02-10 Fujitsu General Ltd Picture quality adjusting circuit
JPH06233235A (en) 1993-02-03 1994-08-19 Sharp Corp Unwanted signal recording blocking device
JPH0730796A (en) 1993-07-14 1995-01-31 Sony Corp Video signal tracking system
JPH09247563A (en) * 1996-03-08 1997-09-19 Hitachi Ltd Television receiver
JPH1023421A (en) 1996-07-09 1998-01-23 Toshiba Corp Moving image processing method

Also Published As

Publication number Publication date
CN1130074C (en) 2003-12-03
CN1274503A (en) 2000-11-22
ID25868A (en) 2000-11-09
KR20010030681A (en) 2001-04-16
DE69925980T2 (en) 2005-12-22
US6295095B1 (en) 2001-09-25
EP1018262A1 (en) 2000-07-12
EP1018262B1 (en) 2005-06-29
JP3551151B2 (en) 2004-08-04
WO2000005877A1 (en) 2000-02-03
JP2002521922A (en) 2002-07-16
DE69925980D1 (en) 2005-08-04
BR9906650A (en) 2000-08-29
KR100529421B1 (en) 2005-11-17

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