WO1992009045A3 - Resolution transforming raster-based imaging system - Google Patents

Resolution transforming raster-based imaging system Download PDF

Info

Publication number
WO1992009045A3
WO1992009045A3 PCT/US1991/008327 US9108327W WO9209045A3 WO 1992009045 A3 WO1992009045 A3 WO 1992009045A3 US 9108327 W US9108327 W US 9108327W WO 9209045 A3 WO9209045 A3 WO 9209045A3
Authority
WO
WIPO (PCT)
Prior art keywords
positions
resolution
produce
different
threshold level
Prior art date
Application number
PCT/US1991/008327
Other languages
French (fr)
Other versions
WO1992009045A2 (en
Inventor
Allen L Frazier
James S Pierson
Original Assignee
Dp Tek 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 Dp Tek Inc filed Critical Dp Tek Inc
Priority to DE69120962T priority Critical patent/DE69120962T2/en
Priority to EP92900927A priority patent/EP0556321B1/en
Priority to JP50189792A priority patent/JP3275050B2/en
Publication of WO1992009045A2 publication Critical patent/WO1992009045A2/en
Publication of WO1992009045A3 publication Critical patent/WO1992009045A3/en

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/391—Resolution modifying circuits, e.g. variable screen formats
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
    • G06K15/1204—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers involving the fast moving of an optical beam in the main scanning direction
    • G06K15/1223—Resolution control, enlarging or reducing, edge or detail enhancement
    • 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
    • H04N1/40025—Circuits exciting or modulating particular heads for reproducing continuous tone value scales
    • H04N1/40037—Circuits exciting or modulating particular heads for reproducing continuous tone value scales the reproducing element being a laser

Abstract

A conventional display device, such as a marking engine (43) for a laser printer or digital copier, having a nominal resolution and a predetermined threshold level for producing output image dots, is modified to a different (higher or lower) resolution or modified to produce output dots along axes (7, 9 and 11) different from the axes (3, 5) of the display device by using different resolution input data, and by selectively activating the energy source to produce overlap areas that exceed the device threshold and thereby produce dots (17) at positions that are not on the normal resolution positions of the device (lines 3 and 5). Such threshold exceeding overlap areas may be achieved by activating the marking engine's energy source at a plurality of positions, with the energy at some positions being selectively below the threshold level for producing an output dot, but with the combined energy at the desired dot positions being above the threshold level to produce the desired dot.
PCT/US1991/008327 1990-11-07 1991-11-06 Resolution transforming raster-based imaging system WO1992009045A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69120962T DE69120962T2 (en) 1990-11-07 1991-11-06 RESOLUTION GRID IMAGING SYSTEM
EP92900927A EP0556321B1 (en) 1990-11-07 1991-11-06 Resolution transforming raster-based imaging system
JP50189792A JP3275050B2 (en) 1990-11-07 1991-11-06 Method and apparatus for copying a desired image to an image recording device having a predetermined device resolution

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/610,087 US5134495A (en) 1990-11-07 1990-11-07 Resolution transforming raster-based imaging system
US610,087 1990-11-07

Publications (2)

Publication Number Publication Date
WO1992009045A2 WO1992009045A2 (en) 1992-05-29
WO1992009045A3 true WO1992009045A3 (en) 1992-07-09

Family

ID=24443585

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/008327 WO1992009045A2 (en) 1990-11-07 1991-11-06 Resolution transforming raster-based imaging system

Country Status (7)

Country Link
US (1) US5134495A (en)
EP (1) EP0556321B1 (en)
JP (1) JP3275050B2 (en)
AU (1) AU646782B2 (en)
CA (1) CA2095018C (en)
DE (1) DE69120962T2 (en)
WO (1) WO1992009045A2 (en)

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Also Published As

Publication number Publication date
CA2095018A1 (en) 1992-05-08
DE69120962T2 (en) 1997-03-13
CA2095018C (en) 1999-04-20
AU646782B2 (en) 1994-03-03
EP0556321A4 (en) 1993-09-29
JPH06504004A (en) 1994-05-12
DE69120962D1 (en) 1996-08-22
JP3275050B2 (en) 2002-04-15
US5134495A (en) 1992-07-28
WO1992009045A2 (en) 1992-05-29
EP0556321A1 (en) 1993-08-25
EP0556321B1 (en) 1996-07-17
AU9067091A (en) 1992-06-11

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