Hand-supportable digital image capture and processing system supporting a multi-tier modular software architecture

• US 8,366,005 B2
• Filed: 12/22/2010
• Issued: 02/05/2013
• Est. Priority Date: 11/13/2003
• Status: Expired due to Term

• Current Assignee: Metrologic Instruments Incorporated (Honeywell International Inc.)
• Original Assignee: Metrologic Instruments Incorporated (Honeywell International Inc.)
• Inventors: Kotlarsky, Anatoly, Zhu, Xiaoxun
• Primary Examiner(s): Kim, Ahshik
• Application Number:
  US12/975,781
• Publication Number:
  US 20110290883A1
• Time in Patent Office: 776 Days
• Field of Search: 235/462.24, 235/462.42, 235/462.15, 235/462.09
• US Class Current: 235/462.24
• CPC Class Codes: G06F 9/44526 Plug-ins; Add-ons
• CPC Class Codes: G06K 2207/1012 Special detection of object
• CPC Class Codes: G06K 7/10712 Fixed beam scanning
• CPC Class Codes: G06K 7/10722 Photodetector array or CCD scanning
• CPC Class Codes: G06K 7/10732 Light sources
• CPC Class Codes: G06K 7/10821 further details of bar or optical code scanning devices
• CPC Class Codes: G06K 7/10831 Arrangement of optical elements, e.g. lenses, mirrors, prisms optical elements per se G02B
• CPC Class Codes: G06K 7/10851 Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device basic electronic circuitry H03
• CPC Class Codes: G06K 7/10881 constructional details of hand-held scanners
• CPC Class Codes: G06K 7/14 using light without selection of wavelength, e.g. sensing reflected white light G06K7/10831 - G06K7/1097 take precedence
• CPC Class Codes: G06K 7/1413 1D bar codes
• CPC Class Codes: G06K 7/1417 2D bar codes
• CPC Class Codes: G06K 7/1426 Multi-level bar codes
• CPC Class Codes: G06K 7/1443 locating of the code in an image

Abstract

A hand-supportable digital image capture and processing system supporting a multi-tier modular software, and plug-in extendable, architecture. The digital image capture and processing system can be realized as an image-capturing cell phone, a digital camera, a video camera, mobile computing terminal and portable data terminal (PDT), provided with suitable hardware platform, communication protocols and user interfaces. A third-party customer can write and install a software plug-in into the application layer so as to enhance or modify the behavior of the hand-supportable digital image capture and processing system without any required knowledge of the hardware platform, communication protocols and/or user interfaces.

Claims

1. A hand-supportable digital image capture and processing system comprising:

a hand-supportable housing having a light transmission window;

a digital image formation and detection subsystem, disposed in said hand-supportable housing, and having (i) image formation optics for projecting a field of view (FOV) through said light transmission window and upon an object to be imaged in said FOV, and (ii) an area-type image detecting array for detecting imaged light reflected off the object during illumination operations so as to detect one or more 2D digital images of the object formed on said area-type image detecting array;

an illumination subsystem, disposed in said hand-supportable housing, and having at least one illumination source for producing and projecting a field of illumination within said FOV during the image capture mode;

an illumination control subsystem disposed in said hand-supportable housing, for controlling the operation of said illumination subsystem during said image capture mode;

an image capturing and buffering subsystem disposed in said hand-supportable housing, for capturing and buffering said one or more 2D digital images detected by said image formation and detection subsystem;

a digital image processing subsystem, disposed in said hand-supportable housing, for processing said one or more 2D digital images captured and buffered by said image capturing and buffering subsystem, so as to read one or more code symbols graphically represented in said 2D digital images, and producing symbol character data representative of said read one or more code symbols;

a system control system for controlling and/or coordinating the operation of one or more of said subsystems above; and

a computing platform for supporting the implementation of one or more of said subsystems above, and including (i) memory for storing at least one code symbol reading application, and (ii) a microprocessor for running at least one code symbol reading application; and

wherein said memory comprises a memory architecture that supports a multi-tier modular software architecture characterized by an operating system (OS) layer and an application layer in which at least one said code symbol reading application is run and responsive to the generation of a triggering event within said hand-supportable digital image capture and processing system.

2. The hand-supportable digital image capture and processing system of claim 1, which further comprises:

an input/output subsystem for transmitting said symbol character data to an external host system or other information receiving or responding device.

3. The hand-supportable digital image capture and processing system of claim 2, wherein said multi-tier modular software architecture further comprises an intermediate layer disposed between said application layer and said OS Layer.

4. The hand-supportable digital image capture and processing system of claim 2, wherein said computing platform implements said digital image processing subsystem, said input/output subsystem and said system control subsystem.

5. The hand-supportable digital image capture and processing system of claim 3, wherein said OS layer includes one or more software modules selected from the group consisting of an OS kernal module, an OS file system module, and device driver modules;

wherein said intermediate layer includes one or more of software modules selected from the group consisting of a tasks manager module, an events dispatcher module, an input/output manager module, a user commands manager module, the timer subsystem module, an input/output subsystem module and an memory control subsystem module;

wherein said application layer includes one or more software modules selected from the group consisting of a code symbol decoding module, a function programming module, an application events manager module, a user commands table module, and a command handler module.

6. The hand-supportable digital image capture and processing system of claim 3, wherein, prior to capturing one or more 2D digital images of the object, said microprocessor rapidly initializes said computing platform by performing the following operations:

(1) accessing one or more software modules from said OS layer and executing code contained therein;

(2) accessing one or more software modules from said intermediate layer and executing code contained therein; and

(3) accessing one or more software modules from said application layer and executing code contained therein.

7. The hand-supportable digital image capture and processing system of claim 1, which further comprises an automatic object detection subsystem for automatically detecting the presence of the object in said FOV, and in response thereto, generating a trigger signal indicative of a triggering event.

8. A hand-supportable digital image capture and processing system, comprising:

a digital image formation and detection subsystem, disposed in said hand-supportable housing, and having (i) image formation optics for projecting a field of view (FOV) through said light transmission window and upon an object to be imaged in said FOV, and (ii) an area-type image detecting array for detecting imaged light reflected off the object during illumination operations so as to detect one or more 2D digital images of the object formed on said area-type image detecting array;

an illumination subsystem, disposed in said hand-supportable housing, and having at least one illumination source for producing and projecting a field of illumination within said FOV during the image capture mode;

an illumination control subsystem disposed in said hand-supportable housing, for controlling the operation of said illumination subsystem during said image capture mode;

an image capturing and buffering subsystem disposed in said hand-supportable housing, for capturing and buffering said one or more 2D digital images detected by said image formation and detection subsystem;

a digital image processing subsystem, disposed in said hand-supportable housing, for processing said one or more 2D digital images captured and buffered by said image capturing and buffering subsystem, so as to read one or more code symbols graphically represented in said 2D digital images, and producing symbol character data representative of said read one or more code symbols;

a system control system for controlling and/or coordinating the operation of one or more of said subsystems above; and

a computing platform for supporting the implementation of one or more of said subsystems above, and including (i) memory for storing at least one code symbol reading application, and (ii) a microprocessor for running at least one code symbol reading application; and

wherein said memory comprises a memory architecture that supports a multi-tier modular software architecture characterized by an operating system (OS) layer and an application layer in which at least one said code symbol reading application is run and responsive to the generation of a triggering event within said hand-supportable digital image capture and processing system;

wherein said computing platform further comprises Flash ROM for storing said at least one code symbol reading application, and RAM for storing said one or more 2D digital images captured and buffered by said image capturing and buffering subsystem.

9. The hand-supportable digital image capture and processing system of claim 8, wherein said hand-supportable housing contains all of said subsystems.

10. The hand-supportable digital image capture and processing system of claim 8, wherein said memory maintains system parameters used to configure said functions of said hand-supportable digital image capture and processing system.

11. A hand-supportable digital image capture and processing system comprising:

a digital image formation and detection subsystem, disposed in said hand-supportable housing, and having (i) image formation optics for projecting a field of view (FOV) through said light transmission window and upon an object to be imaged in said FOV, and (ii) an area-type image detecting array for detecting imaged light reflected off the object during illumination operations so as to detect one or more 2D digital images of the object formed on said area-type image detecting array;

an illumination subsystem, disposed in said hand-supportable housing, and having at least one illumination source for producing and projecting a field of illumination within said FOV during the image capture mode;

an illumination control subsystem disposed in said hand-supportable housing, for controlling the operation of said illumination subsystem during said image capture mode;

an image capturing and buffering subsystem disposed in said hand-supportable housing, for capturing and buffering said one or more 2D digital images detected by said image formation and detection subsystem;

a digital image processing subsystem, disposed in said hand-supportable housing, for processing said one or more 2D digital images captured and buffered by said image capturing and buffering subsystem, so as to read one or more code symbols graphically represented in said 2D digital images, and producing symbol character data representative of said read one or more code symbols;

a system control system for controlling and/or coordinating the operation of one or more of said subsystems above; and

a computing platform for supporting the implementation of one or more of said subsystems above, and including (i) memory for storing at least one code symbol reading application, and (ii) a microprocessor for running at least one code symbol reading application; and

wherein said memory comprises a memory architecture that supports a multi-tier modular software architecture characterized by an operating system (OS) layer and an application layer in which at least one said code symbol reading application is run and responsive to the generation of a triggering event within said hand-supportable digital image capture and processing system;

said computing platform implements said digital image processing subsystem, said input/output subsystem and said system control subsystem, and wherein said application layer includes said one or more libraries and said one or more libraries include one or more software modules selected from the group consisting of a code symbol decoding module, a function programming module, an application events manager module, a user commands table module, and a command handler module.

12. The digital image capture and processing system of claim 11, wherein an IR object detection software driver, located within said OS Layer, is installed automatically.

13. A digital image capture and processing system comprising:

a digital image formation and detection subsystem, disposed in said hand-supportable housing, and having (i) image formation optics for projecting a field of view (FOV) through said light transmission window and upon an object to be imaged in said FOV, and (ii) an area-type image detecting array for detecting imaged light reflected off the object during illumination operations so as to detect one or more 2D digital images of the object formed on said area-type image detecting array;

an illumination subsystem, disposed in said hand-supportable housing, and having at least one illumination source for producing and projecting a field of illumination within said FOV during the image capture mode;

an illumination control subsystem disposed in said hand-supportable housing, for controlling the operation of said illumination subsystem during said image capture mode;

an image capturing and buffering subsystem disposed in said hand-supportable housing, for capturing and buffering said one or more 2D digital images detected by said image formation and detection subsystem;

a digital image processing subsystem, disposed in said hand-supportable housing, for processing said one or more 2D digital images captured and buffered by said image capturing and buffering subsystem, so as to read one or more code symbols graphically represented in said 2D digital images, and producing symbol character data representative of said read one or more code symbols;

a system control system for controlling and/or coordinating the operation of one or more of said subsystems above; and

a computing platform for supporting the implementation of one or more of said subsystems above, and including (i) memory for storing at least one code symbol reading application, and (ii) a microprocessor for running at least one code symbol reading application; and

wherein said memory comprises a memory architecture that supports a multi-tier modular software architecture characterized by an operating system (OS) layer and an application layer in which at least one said code symbol reading application is run and responsive to the generation of a triggering event within said hand-supportable digital image capture and processing system;

wherein said hand-supportable digital image capture and processing system is realized as a mobile device selected from the group consisting of an image-capturing cell phone, a digital camera, a video camera, mobile computing terminal and portable data terminal (PDT), and each said mobile device being provided with a suitable hardware platform, communication protocols and user interfaces.

14. The hand-supportable digital image capture and processing system of claim 13, wherein said field illumination comprises narrow-band illumination produced from at least one light emitting diode (LED).

15. The hand-supportable digital image capture and processing system of claim 13, wherein said digital image processing subsystem processes said one or more 2D digital images, so as to read one or more code symbols graphically represented therein, and producing symbol character data representative of said read one or more 2D code symbols.

16. The hand-supportable digital image capture and processing system of claim 13, wherein each said code symbol is a bar code symbol selected from the group consisting of a 1D bar code symbol, a 2D bar code symbol, and a data matrix type code symbol structure.

17. The hand-supportable digital image capture and processing system of claim 13, which further comprises a trigger manually actuatable by an operator of said digital image capture and processing system so as to generate a trigger signal indicating a triggering event.

18. The hand-supportable digital image capture and processing system of claim 13, wherein a third-party customer can write and install a software plug-in into said application layer so as to enhance or modify the behavior of said hand-supportable digital image capture and processing system without any required knowledge of said hardware platform, communication protocols and/or user interfaces.

19. The hand-supportable digital image capture and processing system of claim 13, which further comprises:

an input/output subsystem for transmitting said symbol character data to an external host system or other information receiving or responding device.

20. The hand-supportable digital image capture and processing system of claim 13, wherein said computing platform further comprises Flash ROM for storing said at least one code symbol reading application, and RAM for storing said one or more 2D digital images captured and buffered by said image capturing and buffering subsystem.