Optical scanner with hand-held and hands-free modes of use

• US 6,053,413 A
• Filed: 02/10/1997
• Issued: 04/25/2000
• Est. Priority Date: 06/16/1989
• Status: Expired due to Term

• Current Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Original Assignee: Symbol Technologies, Inc. (Zebra Technologies Corporation)
• Inventors: Barkan, Edward, Jenkins, Ian, Wild, Robert, Giordano, Joseph, Curry, Daniel, Swift, Philip, Ryder, Michael, Tu, Jean, Oppenheim, Ellen, Carricato, John
• Primary Examiner(s): LEE, MICHAEL GUNYOUNG
• Application Number:
  US08/798,501
• Time in Patent Office: 1,170 Days
• Field of Search: 235/472, 235/454, 235/485, 235/486, 235/383, 235/462, 235/472.01, 235/462.45, 235/462.43, 235/462.47, 235/462.48
• US Class Current: 235/472.01
• CPC Class Codes: G06K 2207/1011 Aiming
• CPC Class Codes: G06K 2207/1016 Motor control or optical moving unit control
• CPC Class Codes: G06K 2207/1018 Source control
• CPC Class Codes: G06K 7/10554 Moving beam scanning
• CPC Class Codes: G06K 7/10564 Light sources
• CPC Class Codes: G06K 7/10584 Source control
• CPC Class Codes: G06K 7/10633 by oscillation
• CPC Class Codes: G06K 7/10643 Activating means
• CPC Class Codes: G06K 7/10653 using flexible or piezoelectric means
• CPC Class Codes: G06K 7/10673 Parallel lines
• CPC Class Codes: G06K 7/10693 for omnidirectional scanning
• CPC Class Codes: G06K 7/10811 Focalisation
• 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 7/10871 randomly oriented data-fields, code-marks therefore, e.g. concentric circles-code
• CPC Class Codes: G06K 7/10881 constructional details of hand-held scanners
• CPC Class Codes: G06K 7/10891 the scanner to be worn on a finger or on a wrist
• CPC Class Codes: G06K 7/109 adaptations to make the hand-held scanner useable as a fixed scanner
• 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 7/1478 adapting the threshold for pixels in a CMOS or CCD pixel sensor for black and white recognition

Abstract

An optical scanner having an adjustable cradle or stand for allowing the user either to operate the scanner in the hand or while positioned in the cradle. In one embodiment, suitable for use with wireless-based hand-held scanners, a particular scanner may be associated with an individual cradle by scanning a bar code symbol associated with that cradle and storing and/or processing the ID data contained in the symbol. A simple mechanical arrangement is provided for switching the scanner either manually or automatically between one-dimensional and two-dimensional scanning, with corresponding changes in the cross-sectional shape and/or focus of the scanning laser beam.

Claims

1. A portable system for electro-optically reading indicia having parts of different light reflectivity, comprising:

a) a scan assembly including a light source for directing a light beam at an indicium for reflection therefrom, a light sensor having a field of view and operative for detecting light reflected from the indicium and for generating an electrical signal corresponding to the detected light, a scanner for scanning at least one of the light beam and the field of view, and an actuator for manually actuating the scanning assembly during a hand-held mode of operation;

b) a housing for supporting the scanning assembly, the housing including two parts detachably mounted to each other and an elongated support having a lower end region, one of the parts containing the scanning assembly, ther other of the parts being a cradle connected to the elongated support and operative for supporting said one of the parts, the cradle having upwardly-open, concavely curved walls, and said one of the parts having convexly curved side walls that rest on the concavely curved walls of the cradle; and

c) a base for supporting the housing during a hands-free mode of operation, the lower end region of the support being pivotably mounted to the base.

2. The system according to claim 1, wherein the support is continuously pivotable through an infinite number of positions.

3. The system according to claim 2, wherein the support is retained in a selected one of said positions by friction.

4. The system according to claim 1, wherein the base has a generally planar bottom surface supportable on a support surface in the hands-free mode, and wherein the support extends along a longitudinal axis that intersects the generally planar bottom surface, and wherein the lower end region of the support is pivotable on the base about a pivot axis that extends perpendicularly to the longitudinal axis.

5. The system according to claim 1 wherein the base has a generally planar bottom surface;

and further comprising a generally planar window through which at least one of the light beam and the reflected light passes, the window being inclined relative to the bottom surface.

6. The system according to claim 1, wherein the support has two elongated sections, one of the sections being mounted for telescoping movement relative to the other of the sections, the other section having the lower end region that is pivotably mounted to the base.

7. The system according to claim 1, wherein the support is a stalk sized to be gripped by a hand of an operator.

8. The system according to claim 1, and further comprising means for detecting the mode of operation for the system.

9. The system according to claim 1, wherein the scanner is operative for sweeping the light beam in an omni-directional scan pattern over the indicium.

10. The system according to claim 1, wherein the actuator is a manually depressable trigger switch.

11. The system according to claim 1, wherein said one part has part- spherical walls.

12. The system according to claim 1;

and further comprising a window on the one part for permitting passage of the light beam and the reflected light, and wherein the cradle has a cutout overlying the window.

13. A method of electro-optically reading indicia having parts of different light reflectivity, comprising the steps of:

a) scanning at least one of a light beam and a field of view over an indicium to be read;

b) supporting components for performing the scanning step in a housing having two parts detachably mounted to each other and an elongated support that has a lower end region, one of the parts containing the scanning assembly, the other of the parts being a cradle connected to the elongated support and operative for supporting said one of the parts, the cradle having upwardly-open, concavely curved walls, and said one of the parts having convexly curved side walls that rest on the concavely curved walls of the cradle; and

c) pivotably mounting the lower end region of the support to a base to pivot the housing relative to the indicium to be read.