GB9710379D0 - Light shutter apparatus for an optical scanner - Google Patents

Light shutter apparatus for an optical scanner

Info

Publication number
GB9710379D0
GB9710379D0 GBGB9710379.0A GB9710379A GB9710379D0 GB 9710379 D0 GB9710379 D0 GB 9710379D0 GB 9710379 A GB9710379 A GB 9710379A GB 9710379 D0 GB9710379 D0 GB 9710379D0
Authority
GB
United Kingdom
Prior art keywords
optical scanner
light shutter
shutter apparatus
light
scanner
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
GBGB9710379.0A
Other versions
GB2325580A (en
GB2325580B (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.)
Veutron Corp
Original Assignee
Umax Data System Inc
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 to AU23487/97A priority Critical patent/AU686980B3/en
Application filed by Umax Data System Inc filed Critical Umax Data System Inc
Priority to GB9710379A priority patent/GB2325580B/en
Publication of GB9710379D0 publication Critical patent/GB9710379D0/en
Publication of GB2325580A publication Critical patent/GB2325580A/en
Application granted granted Critical
Publication of GB2325580B publication Critical patent/GB2325580B/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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
    • H04N1/0287—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array using a tubular lamp or a combination of such lamps
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • 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
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture
    • H04N1/4078—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture using gradational references, e.g. grey-scale test pattern analysis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02493—Additional optical elements not otherwise provided for, e.g. filters, polarising plates, masks or apertures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02497—Additional elements, e.g. sheet guide plates, light shields

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
GB9710379A 1997-05-19 1997-05-20 Light shutter apparatus for an optical scanner Expired - Fee Related GB2325580B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU23487/97A AU686980B3 (en) 1997-05-19 1997-05-19 Light shutter apparatus for an optical scanner
GB9710379A GB2325580B (en) 1997-05-19 1997-05-20 Light shutter apparatus for an optical scanner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU23487/97A AU686980B3 (en) 1997-05-19 1997-05-19 Light shutter apparatus for an optical scanner
GB9710379A GB2325580B (en) 1997-05-19 1997-05-20 Light shutter apparatus for an optical scanner

Publications (3)

Publication Number Publication Date
GB9710379D0 true GB9710379D0 (en) 1997-07-16
GB2325580A GB2325580A (en) 1998-11-25
GB2325580B GB2325580B (en) 2001-07-11

Family

ID=25618970

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9710379A Expired - Fee Related GB2325580B (en) 1997-05-19 1997-05-20 Light shutter apparatus for an optical scanner

Country Status (2)

Country Link
AU (1) AU686980B3 (en)
GB (1) GB2325580B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030063333A1 (en) * 2001-10-03 2003-04-03 Boll David W. Flatbed scanner with apparatus for scanning light transmissive objects
US6697173B2 (en) * 2001-11-26 2004-02-24 Howtek Devices Corporation White reference calibration in a dual digitizer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH570627A5 (en) * 1972-03-20 1975-12-15 Commw Of Australia

Also Published As

Publication number Publication date
GB2325580A (en) 1998-11-25
GB2325580B (en) 2001-07-11
AU686980B3 (en) 1998-02-12

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Legal Events

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

Effective date: 20011011