Sensing Device For Sensing A Position Within A Region

• US 20090304287A1
• Filed: 08/13/2009
• Published: 12/10/2009
• Est. Priority Date: 05/25/1999
• Status: Active Grant

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Walmsley, Simon Robert, Silverbrook, Kia, Lapstun, Paul
• Granted Patent: US 7,916,978 B2
• Time in Patent Office: Days
• US Class Current: 382/218
• CPC Class Codes: B41J 13/103 for the sheet feeding section
• CPC Class Codes: B41J 13/106 for the sheet output section
• CPC Class Codes: B41J 2/17503 Ink cartridges
• CPC Class Codes: B41J 2/17513 Inner structure
• CPC Class Codes: B41J 2/1752 Mounting within the printer
• CPC Class Codes: B41J 2/17523 Ink connection
• CPC Class Codes: B41J 2/17546 electronically
• CPC Class Codes: B41J 2/17553 Outer structure
• CPC Class Codes: B41J 2/17556 Means for regulating the pressure in the cartridge
• CPC Class Codes: B41J 2/17563 Ink filters
• CPC Class Codes: B41J 2/2114 Ejecting specialized liquids, e.g. transparent or processing liquids B41J2/211 takes precedence
• CPC Class Codes: B42C 19/02 starting with single sheets
• CPC Class Codes: B42C 9/0006 by applying adhesive to a stack of sheets
• CPC Class Codes: B42C 9/0081 applying adhesive to individual sheets for binding them together by fusing, welding B42C9/0093
• CPC Class Codes: B65H 29/34 from supports slid from under the articles
• CPC Class Codes: B65H 37/04 for securing together articles or webs, e.g. by adhesive, stitching or stapling adhering replacement to expiring web during change of web roll B65H19/18
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/0321 by optically sensing the absolute position with respect to a regularly patterned surface forming a passive digitiser, e.g. pen optically detecting position indicative tags printed on a paper sheet constructional details of pen-shaped pointing devices G06F3/03545, G06F3/03542, G06F3/037
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06V 30/10 Character recognition
• CPC Class Codes: G06V 30/142 : using hand-held instruments; Constructional details of the instruments
• CPC Class Codes: G06V 30/1423 : the instrument generating sequences of position coordinates corresponding to handwriting preprocessing or recognising digital ink G06V30/32
• CPC Class Codes: G06V 30/1426 : by sensing position defining codes on a support
• CPC Class Codes: G06V 30/1444 : Selective acquisition, locating or processing of specific regions, e.g. highlighted text, fiducial marks or predetermined fields
• CPC Class Codes: G06V 30/1448 : based on markings or identifiers characterising the document or the area
• CPC Class Codes: H04N 1/00127 : Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
• CPC Class Codes: H04N 1/00204 : with a digital computer or a digital computer system, e.g. an internet server programmed control between transmitter and receiver or between image input and image output device H04N1/32561
• CPC Class Codes: H04N 1/00244 : with a server, e.g. an internet server fax-servers or the like for store and forward H04N1/324
• CPC Class Codes: H04N 1/00326 : with a data reading, recognizing or recording apparatus, e.g. with a bar-code apparatus arrangements for the associated working of recording or reproducing apparatus with related apparatus G11B31/00
• CPC Class Codes: H04N 1/00358 : Type of the scanned marks
• CPC Class Codes: H04N 1/00376 : Means for identifying a mark sheet or area
• CPC Class Codes: H04N 1/00567 : Handling of original or reproduction media, e.g. cutting, separating, stacking
• CPC Class Codes: H04N 1/00968 : by scanning marks on a sheet mark-sheet input means H04N1/00355; sensing record carriers G06K7/00
• CPC Class Codes: H04N 1/32101 : Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
• CPC Class Codes: H04N 1/32122 : in a separate device, e.g. in a memory or on a display separate from image data
• CPC Class Codes: H04N 1/32128 : attached to the image data, e.g. file header, transmitted message header, information on the same page or in the same computer file as the image for information embedded in the image H04N1/32144
• CPC Class Codes: H04N 1/32771 : in response to a request, e.g. for a particular document
• CPC Class Codes: H04N 1/32778 : using a mark-sheet or machine-readable code request
• CPC Class Codes: H04N 2201/0082 : Image hardcopy reproducer H04N2201/0091 - H04N2201/0094 take precedence
• CPC Class Codes: H04N 2201/3243 : of type information, e.g. handwritten or text document
• CPC Class Codes: H04N 2201/3269 : of machine readable codes or marks, e.g. bar codes or glyphs
• CPC Class Codes: H04N 2201/327 : which are undetectable to the naked eye, e.g. embedded codes

Abstract

A sensing device for sensing a region provided on or in a surface having at least one region. The at least one region having printed therein or thereon coded data indicative of an identity of the at least one region, and visible information at least some of the information being at least partially related to the at least one region. The sensing device includes a sensor for sensing at least some of the coded data when the sensing device is placed in an operative position relative to the at least one region and generating indicating data. The indicating data is at least partially indicative of the identity of the at least one region and at least one of movement and a position of the sensing device relative to the at least one region. The sensing device includes a communicator configured to communicate the indicating data to a computer system.

Claims

1. A method of sensing a region provided on or in a surface, the surface including one or more regions, each region having printed thereon coded data indicative of an identity of the region, the coded data including a number of data portions, each data portion in the same region encoding an identical identity, the method including:

capturing a sequence of images of the coded data when a sensing device is placed in an operative position relative to one of the regions;

comparing the images to determine common features in the sequence of images; and

determining movement of the sensing device relative to the surface by determining changes in position of the common features between the sequence of images;

generating, using the sensed coded data, indicating data indicative of the identity of the region and movement of the sensing device; and

communicating the indicating data to a computer system.

2. A method according to claim 1, wherein the surface includes a plurality of regions, and wherein the identity is unique to any other region on the surface.

3. A method according to claim 1, wherein the indicating data indicative of movement of the sensing device is a sequence of relative positions.

4. A method according to claim 2, wherein each data portion in at least one further region encodes a unique data portion identity, the method comprising the further steps of:

capturing at least one image of coded data when the sensing device is placed in an operative position relative to the further region;

determines at least one unique data portion identity from the at least one image;

generates the indicating data using the determined unique data portion identity, wherein the determined unique data portion identity is mapped to a position in the further region.

5. A method according to claim 1, wherein the coded data comprises a plurality of substantially undifferentiated marks positioned relative to a set of predetermined nominal mark positions.

6. A method according to claim 5, wherein a value represented by each mark is at least partially determined by the position of the mark relative to the set of predetermined nominal mark positions.

7. A method according to claim 5, wherein the predetermined nominal mark positions are arranged relative to a plurality of nominal lines.

8. A sensing device according to claim 5, wherein the marks have centers and wherein the relative spacing of the centers of at least one pair of adjacent marks is less than 12 millimeters.

9. A sensing device according to claim 5, wherein each mark has a minimum radius and a maximum radius and wherein the length of the minimum radius is greater than 40% of the length of the maximum radius.