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a scanning device and coded data technology, applied in the field of scanning devices for coded data, can solve the problems of reducing the potential dynamic range of pixel cells, the link between the image sensor and the host processor must support the relatively high read-out data rate of the image sensor,
Inactive Publication Date: 2005-11-17
SILVERBROOK RES PTY LTD
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One of the issues that arises when such image sensors are used in systems with a host processor is that the link between the image sensor and the
Method used
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first embodiment
[0702]FIG. 58, FIG. 59, FIG. 60 and FIG. 61 show a Hyperlabel scanner 4000. The scanner is designed to image and decode Hyperlabel tags when its tip 4003 is brought into close proximity or contact with a Hyperlabel tagged surface. The scanner can be operated in free mode, in which it continuously and automatically scans tags within its field of view; or in triggered mode, in which it only scans tags when its trigger 4008 is held depressed. Although the scanner is designed with a limited depth of field, thus reducing the likelihood of unintentional scans in free mode, triggered mode can be used to avoid unintentional scans. The trigger may also be configured to be manually operated (as shown), or configured to be automatically activated when the scanner makes contact with the surface. Because an individual product item is tagged with a unique item ID, there is no possibility of duplicate scans.
[0703] During normal operation the scanner returns the item ID encoded in a Hyperlabel tag,...
second embodiment
[0726]FIGS. 72, 73 and 74 show a Hyperlabel scanner 4000. FIGS. 72 and 73 use similar reference numerals to FIGS. 58 and 59 to denote similar elements. In this example, the optical assembly shown in FIG. 59 is replaced with a laser based scanning system, an example of which is shown in FIG. 74.
[0727] As shown in FIG. 74, a scan beam 4540 is produced by a laser 4502. The laser produces a narrowband near-infrared beam matched to the peak wavelength of the near-infrared ink used to print the Hyperlabel tags. An optional amplitude modulator 4503 allows the amplitude of the beam to be modulated, e.g. for ambient light suppression or ranging purposes as discussed below. An optional beam expander 4504 allows the beam to be reduced to produce the desired spot size. The laser is typically a solid-state laser.
[0728] A pair of mirrors 4506 and 4507 injects the scan beam into line with the retroreflective collection system, as described further below.
[0729] An optional focussing lens 4508 foc...
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Abstract
A scanning device for: scanning coded data disposed on a surface; and generating interaction data based on the sensed coded data, the interaction data being indicative of interaction of the scanning device with the surface; the coded data including, at a plurality of locations on the interface surface, a corresponding plurality of coded data portions, the scanning device comprising: (a) a laser source and scan optics configured to emit a scanning beam through an aperture in a housing of the scanning device, the scanning beam being directed in first and second orthogonal directions to thereby generate a raster scan pattern over a scanning patch, the scanning patch being positioned to cause the exposure of the at least one coded data portion when the surface and the sensing device are positioned operatively with respect to each other; (b) a photodetector for detecting reflection of the scanning beam from the surface, thereby to capture sample information; (c) at least one analog to digital converter for converting the captured sample information into sample data; (d) a first framestore for storing successive sample data as image data; (e) an image processor for processing the image data to generate processed image data; (e) a host processor for generating the interaction data based at least partially on the processed image data.
Description
FIELD OF THE INVENTION [0001] The present invention relates to the field of sensing devices for sensing coded data on or in a surface. [0002] The invention has been designed to enable a user to interact with printed coded data on product packaging or labels, and will largely be described with reference to this application. However, it will be appreciated that the invention is not limited to use in this particular application. CO-PENDING APPLICATIONS [0003] Various methods, systems and apparatus relating to the present invention are disclosed in the following co-pending applications filed by the applicant or assignee of the present invention simultaneously with the present application: HYJ001US,HYG001USHYG002US,HYG003US,HYG004US,HYG005US,HYG006US,HYG007US,HYG008US,HYG009US,HYG010US,HYG011US,HYG012US,HYG013US,HYG014US,HYG015US,HYG016US,HYC001US,HYC002US,HYC003US,HYC004US,HYC005US,HYC006US,HYC007US,HYC008US,HYC009US,HYC010US,HYC011US,HYT001US,HYT002US,HYT003US,HYT004USHYT005US,HYT006U...
Claims
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Inventor SILVERBROOK, KIALAPSTUN, PAULRUSMAN, JANHENDERSON, PETER CHARLES BOYDMOINI, ALIREZAYOURLO, ZHENYA ALEXANDERUNDERWOOD, MATTHEW JOHNRIDLEY, NICHOLAS DAMON
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