Hand-held laser scanning device for scanning a product item

• US 7,469,836 B2
• Filed: 07/06/2006
• Issued: 12/30/2008
• Est. Priority Date: 04/07/2003
• Status: Expired due to Fees

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia, Lapstun, Paul, Rusman, Jan
• Primary Examiner(s): Thien, Le M
• Assistant Examiner(s): TAYLOR, APRIL ALICIA
• Application Number:
  US11/480,957
• Publication Number:
  US 20060249577A1
• Time in Patent Office: 908 Days
• Field of Search: 235/375, 235/383, 235/454, 235/462.01, 235/462.44, 235/462.45, 235/472.01, 235/462.43
• US Class Current: 235/462.45
• CPC Class Codes: G06F 3/014 Hand-worn input/output arrangements, e.g. data gloves
• 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: G06K 7/10554 Moving beam scanning
• CPC Class Codes: G06K 7/10623 Constructional details
• CPC Class Codes: G06K 7/10693 for omnidirectional scanning
• CPC Class Codes: G06K 7/10722 Photodetector array or CCD scanning
• CPC Class Codes: G06K 7/10772 Moved readers, e.g. pen, wand
• CPC Class Codes: G06Q 10/00 Administration; Management
• CPC Class Codes: G06Q 10/087 Inventory or stock management, e.g. order filling, procurement or balancing against orders
• CPC Class Codes: G06Q 20/20 Point-of-sale [POS] network systems
• CPC Class Codes: G06Q 30/02 Marketing; Price estimation or determination; Fundraising
• CPC Class Codes: G06Q 30/0207 Discounts or incentives, e.g. coupons or rebates
• CPC Class Codes: G06Q 30/0212 Chance discounts or incentives
• CPC Class Codes: G06Q 30/0217 involving input on products or services in exchange for incentives or rewards
• CPC Class Codes: G06Q 30/0236 Incentive or reward received by requiring registration or ID from user
• CPC Class Codes: G06Q 30/0259 based on store location
• CPC Class Codes: G06Q 30/0267 Wireless devices
• CPC Class Codes: G06Q 30/0601 Electronic shopping [e-shopping]
• CPC Class Codes: H04N 25/59 by controlling the amount of charge storable in the pixel, e.g. modification of the charge conversion ratio of the floating node capacitance
• CPC Class Codes: H04N 25/671 for non-uniformity detection or correction
• CPC Class Codes: H04N 25/745 : Circuitry for generating timing or clock signals
• CPC Class Codes: H04N 25/75 : Circuitry for providing, modifying or processing image signals from the pixel array
• CPC Class Codes: H04N 25/767 : Horizontal readout lines, multiplexers or registers
• CPC Class Codes: H04N 25/778 : comprising amplifiers shared between a plurality of pixels, i.e. at least one part of the amplifier must be on the sensor array itself
• CPC Class Codes: H04N 3/1568 : for disturbance correction or prevention within the image-sensor, e.g. biasing, blooming, smearing correction circuits H04N25/62
• CPC Class Codes: H04N 5/33 : Transforming infrared radiation cameras or camera modules for generating image signals from infrared radiation H04N23/20; circuitry of SSIS for transforming infrared radiation into image signals H04N25/20

Abstract

A laser scanning device for scanning an interface surface of a product item is provided. The interface surface has visible information relating to the product item and a plurality of tags disposed thereon. Each tag contains coded data indicative of an identity of the product item and a plurality of locations on the interface surface. At least some of the tags are coincident with the visible information. The scanning device comprises: (a) a housing; (b) a laser for emitting a scanning beam from the housing; (c) a sensor for sensing the coded data contained a tag exposed by the scanning beam; and (d) a processor for determining, using the sensed coded data, product identity data indicative of the identity of the product item and location data indicative of a location of the exposed tag on the interface surface.

Claims

1. A hand-held laser scanning device for scanning an interface surface provided on a product item, the interface surface having visible information relating to the product item and a plurality of tags disposed thereon, each tag containing coded data indicative of an identity of the product item and a plurality of locations on the interface surface, and at least some of the tags being coincident with the visible information, the scanning device comprising:

(a) a housing;

(b) a laser for emitting a scanning beam from the housing and exposing at least one of the plurality of tags when the product item is provided in a sensing region;

(c) a sensor for sensing the coded data contained in the at least one exposed tag; and

(d) a processor for determining, using at least some of the sensed coded data, product identity data indicative of the identity of the product item and location data indicative of a location of the exposed tag on the interface surface.

2. The scanning device of claim 1, wherein the coded data encodes an EPC associated with the product item, and wherein the processor determines the EPC.

3. The scanning device of claim 1, wherein the product identity data distinguishes the product item from every other product item.

4. The scanning device of claim 1, wherein the processor generates scan data representing the identity of the product item.

5. The scanning device of claim 4, wherein the processor:

(a) determines the product identity data of the product item during a scan event; and

,

(a) generates the scan data if the determined product identity data is different to product identity data determined during previous scan events.

6. The scanning device of claim 4, wherein the processor:

(a) compares the determined product identity data to previously determined product identity data; and

,

(b) generates scan data representing the identity of the product item if the determined product identity data has not been previously determined.

7. The scanning device of claim 1, wherein the scanning beam is directed in first and second orthogonal directions to thereby generate a raster scan pattern over a scanning patch, such that the scanning patch exposes at least one of the plurality of tags when the product item is provided in the sensing region.

8. The scanning device of claim 7, wherein the scanning device includes at least one deflector for deflecting the scanning beam in the first and second orthogonal directions to thereby generate the raster scan pattern over the scanning patch.

9. The scanning device of claim 8, wherein the at least one deflector includes at least one of:

a rotating holographic element;

(a) first and second acousto-optic deflectors; and

,

(b) resonant scanning mirrors.

10. The scanning device of claim 9, wherein the scanning device includes an amplitude modulator, positioned between the laser and the at least one deflector, for modulating the amplitude of the scanning beam.

11. The scanning device of claim 10, wherein the scanning device:

(a) determines from radiation sensed by the sensor, using the modulation of the scanning beam, ambient light incident on the sensor;

(b) determines from radiation sensed by the sensor, using the determined ambient light incident on the sensor, the radiation reflected from the interface surface; and

,

(c) senses the coded data from the radiation reflected from the interface surface.

12. The scanning device of claim 1, wherein the scanning device further includes a memory for storing the product identity.

13. The scanning device of claim 1, wherein the interface surface is at least one of:

(a) product item packaging;

(b) product item labeling; and

,

(c) a surface of the product item.

14. The scanning device of claim 1, wherein the coded data is disposed over at least one of:

(a) substantially all of any one of;

(i) the entire product surface;

(i) the packaging; and

,

(ii) the label;

(b) more than 25% of any one of;

(i) the entire product surface;

(ii) the packaging; and

,

(iii) the label;

(c) more than 50% of any one of;

(i) the entire product surface;

(ii) the packaging; and

,

(iii) the label; and

,

(d) more than 75% of any one of;

(i) the entire product surface;

(ii) the packaging; and

,

(iii) the label.

15. A method of scanning an interface surface provided on a product item, the interface surface having visible information relating to the product item and a plurality of tags disposed thereon, each tag containing coded data indicative of an identity of the product item and a plurality of locations on the interface surface, and at least some of the tags being coincident with the visible information, the method comprising the steps of:

(a) holding the scanning device;

(b) activating the scanning device to thereby cause a scanning beam to be emitted from the housing, the scanning beam being directed in first and second orthogonal directions to thereby generate a raster scan pattern over a scanning patch; and

,

(c) positioning the product item in a sensing region, such that the scanning patch exposes at least one of the plurality of tags, the scanning device being responsive to;

(i) sense the coded data contained in the at least one exposed tag; and

,

(ii) generate, using at least some of the sensed coded data, product identity data indicative of the identity of the product item and location data indicative of a location of the exposed tag on the interface surface.

16. The method of claim 15, wherein the scanning device is activated by depressing a trigger on the scanning device.

17. A system for scanning a product item, said system comprising:

a product item having an interface surface, the interface surface having visible information relating to the product item and a plurality of tags disposed thereon, each tag containing coded data indicative of an identity of the product item and a plurality of locations on the interface surface, wherein at least some of the tags are coincident with the visible information; and

a hand-held scanning device comprising;

(a) a housing;

(b) a laser for emitting a scanning beam from the housing and exposing at least one of the plurality of tags when the product item is provided in a sensing region;

(c) a sensor for sensing the coded data contained in the at least one exposed tag; and

(d) a processor for determining, using at least some of the sensed coded data, product identity data indicative of the identity of the product item and location data indicative of a location of the exposed tag on the interface surface.