GB2319132B - Increasing density range of a video signal by time weighted multi-sampled image signal processing - Google Patents

Increasing density range of a video signal by time weighted multi-sampled image signal processing

Info

Publication number
GB2319132B
GB2319132B GB9623450A GB9623450A GB2319132B GB 2319132 B GB2319132 B GB 2319132B GB 9623450 A GB9623450 A GB 9623450A GB 9623450 A GB9623450 A GB 9623450A GB 2319132 B GB2319132 B GB 2319132B
Authority
GB
United Kingdom
Prior art keywords
density range
sampled image
signal processing
increasing density
video signal
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
GB9623450A
Other versions
GB9623450D0 (en
GB2319132A (en
Inventor
Chun-Tsai Chien
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
Application filed by Umax Data System Inc filed Critical Umax Data System Inc
Priority to GB9623450A priority Critical patent/GB2319132B/en
Publication of GB9623450D0 publication Critical patent/GB9623450D0/en
Publication of GB2319132A publication Critical patent/GB2319132A/en
Application granted granted Critical
Publication of GB2319132B publication Critical patent/GB2319132B/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
    • H04N1/40056—Circuits for driving or energising particular reading heads or original illumination means
    • 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
    • H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
GB9623450A 1996-11-08 1996-11-08 Increasing density range of a video signal by time weighted multi-sampled image signal processing Expired - Fee Related GB2319132B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9623450A GB2319132B (en) 1996-11-08 1996-11-08 Increasing density range of a video signal by time weighted multi-sampled image signal processing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9623450A GB2319132B (en) 1996-11-08 1996-11-08 Increasing density range of a video signal by time weighted multi-sampled image signal processing

Publications (3)

Publication Number Publication Date
GB9623450D0 GB9623450D0 (en) 1997-01-08
GB2319132A GB2319132A (en) 1998-05-13
GB2319132B true GB2319132B (en) 2000-11-01

Family

ID=10802759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9623450A Expired - Fee Related GB2319132B (en) 1996-11-08 1996-11-08 Increasing density range of a video signal by time weighted multi-sampled image signal processing

Country Status (1)

Country Link
GB (1) GB2319132B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654938A2 (en) * 1993-09-21 1995-05-24 MDC Medical Diagnostic Computing GmbH Method and apparatus for enhancing grey scale resolution

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0654938A2 (en) * 1993-09-21 1995-05-24 MDC Medical Diagnostic Computing GmbH Method and apparatus for enhancing grey scale resolution

Also Published As

Publication number Publication date
GB9623450D0 (en) 1997-01-08
GB2319132A (en) 1998-05-13

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Legal Events

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