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GB0308930D0 - System providing hybrid halftone - Google Patents

System providing hybrid halftone

Info

Publication number
GB0308930D0
GB0308930D0 GBGB0308930.7A GB0308930A GB0308930D0 GB 0308930 D0 GB0308930 D0 GB 0308930D0 GB 0308930 A GB0308930 A GB 0308930A GB 0308930 D0 GB0308930 D0 GB 0308930D0
Authority
GB
United Kingdom
Prior art keywords
system providing
providing hybrid
hybrid halftone
halftone
providing
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
GBGB0308930.7A
Other versions
GB2384386A (en
GB2384386B (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.)
HP Inc
Original Assignee
Hewlett Packard Co
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
Priority claimed from US09/181,226 external-priority patent/US6249355B1/en
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB0308930D0 publication Critical patent/GB0308930D0/en
Publication of GB2384386A publication Critical patent/GB2384386A/en
Application granted granted Critical
Publication of GB2384386B publication Critical patent/GB2384386B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • H04N1/4058—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern with details for producing a halftone screen at an oblique angle

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
GB0308930A 1998-10-26 1999-10-19 System for providing halftone Expired - Fee Related GB2384386B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/181,226 US6249355B1 (en) 1998-10-26 1998-10-26 System providing hybrid halftone
GB9924741A GB2345605B (en) 1998-10-26 1999-10-19 System providing hybrid halftone

Publications (3)

Publication Number Publication Date
GB0308930D0 true GB0308930D0 (en) 2003-05-28
GB2384386A GB2384386A (en) 2003-07-23
GB2384386B GB2384386B (en) 2003-09-03

Family

ID=26316014

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0308930A Expired - Fee Related GB2384386B (en) 1998-10-26 1999-10-19 System for providing halftone

Country Status (1)

Country Link
GB (1) GB2384386B (en)

Also Published As

Publication number Publication date
GB2384386A (en) 2003-07-23
GB2384386B (en) 2003-09-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20081019