GB8919340D0 - Maintaining video signals - Google Patents

Maintaining video signals

Info

Publication number
GB8919340D0
GB8919340D0 GB898919340A GB8919340A GB8919340D0 GB 8919340 D0 GB8919340 D0 GB 8919340D0 GB 898919340 A GB898919340 A GB 898919340A GB 8919340 A GB8919340 A GB 8919340A GB 8919340 D0 GB8919340 D0 GB 8919340D0
Authority
GB
United Kingdom
Prior art keywords
video signals
maintaining video
maintaining
signals
video
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.)
Withdrawn
Application number
GB898919340A
Other versions
GB2235602A (en
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Priority to GB8919340A priority Critical patent/GB2235602A/en
Publication of GB8919340D0 publication Critical patent/GB8919340D0/en
Priority to US07/563,476 priority patent/US5166790A/en
Priority to DE69031199T priority patent/DE69031199T2/en
Priority to EP90202258A priority patent/EP0414327B1/en
Priority to JP2220145A priority patent/JPH03102993A/en
Priority to KR1019900012999A priority patent/KR910005684A/en
Publication of GB2235602A publication Critical patent/GB2235602A/en
Withdrawn legal-status Critical Current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
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/202—Gamma control
GB8919340A 1989-08-25 1989-08-25 Maintaining the mean values of the luminance and/or saturation of video signals Withdrawn GB2235602A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB8919340A GB2235602A (en) 1989-08-25 1989-08-25 Maintaining the mean values of the luminance and/or saturation of video signals
US07/563,476 US5166790A (en) 1989-08-25 1990-08-06 Method and apparatus for maintaining the mean valves of video signals
DE69031199T DE69031199T2 (en) 1989-08-25 1990-08-22 Maintenance of video signals
EP90202258A EP0414327B1 (en) 1989-08-25 1990-08-22 Maintaining video signals
JP2220145A JPH03102993A (en) 1989-08-25 1990-08-23 Hold of video signal
KR1019900012999A KR910005684A (en) 1989-08-25 1990-08-23 Preservation device and method of average value of video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8919340A GB2235602A (en) 1989-08-25 1989-08-25 Maintaining the mean values of the luminance and/or saturation of video signals

Publications (2)

Publication Number Publication Date
GB8919340D0 true GB8919340D0 (en) 1989-10-11
GB2235602A GB2235602A (en) 1991-03-06

Family

ID=10662105

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8919340A Withdrawn GB2235602A (en) 1989-08-25 1989-08-25 Maintaining the mean values of the luminance and/or saturation of video signals

Country Status (1)

Country Link
GB (1) GB2235602A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9714870D0 (en) 1997-07-15 1997-09-17 Innovation Tk Limited Telecine systems

Also Published As

Publication number Publication date
GB2235602A (en) 1991-03-06

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)