Compact scanner module mountable to pointing instrument

• US 5,874,722 A
• Filed: 06/13/1996
• Issued: 02/23/1999
• Est. Priority Date: 07/19/1994
• Status: Expired due to Fees

• Current Assignee: PSC Scanning, Inc. (Datalogic ADC Incorporated)
• Original Assignee: Spectra-Physics Scanning Systems, Inc.
• Inventors: Reddersen, Brad R., Rando, Joseph F.
• Primary Examiner(s): PITTS, HAROLD I
• Application Number:
  US08/662,514
• Time in Patent Office: 985 Days
• Field of Search: 235/467, 235/472
• US Class Current: 235/472.01
• CPC Class Codes: G06K 7/10891 the scanner to be worn on a finger or on a wrist

Abstract

Method and apparatus for scanning items with a compact scanner which is mountable onto and/or integral with a pointing instrument. The scanner module may be equipped with an aiming beam for additional help in directing the scan line toward the object to be read. The pointing instrument may be a pen or pencil or alternately a pen-based computer stylus for use with an integrated data terminal module operably connected to the scanner module. Security for preventing separation of the module may be provided by a wireless link.

Claims

1. A data reading system comprising

a pointing instrument constructed in a shape of a handheld writing utensil which may be held in a hand of an operator;

a scanner module mounted external to the pointing instrument, the scanner module comprising

a housing having a support bracket with a clip to be securely and removably attachable to the pointing instrument,

a scanning mechanism including a beam source for producing a beam, a focusing lens for focusing the beam to a desired waist location, and a scanning mirror for scanning the focused beam along at least one axis to produce a scanning beam of at least one scan line,

wherein the pointing instrument effects aiming of the scanning beam toward an object to be scanned by pointing the pointing instrument at the object,

a scanner module mounted to the pointing instrument, the scanner module comprising

a housing having a support bracket with a clip to be securely and removably attachable to the pointing instrument,

a scanning mechanism including a beam source for producing a beam, a focusing lens for focusing the beam to a desired waist location, and a scanning mirror for scanning the focused beam along at least one axis to produce a scanning beam of at least one scan line,

wherein the pointing instrument effects aiming of the scanning beam toward an object to be scanned by pointing the pointing instrument at the object.

2. A data system according to claim 1 further comprising a data terminal module operably connected to the scanner module.

3. A data system according to claim 2 further comprising a connection cable between the scanner module and the data terminal module.

4. A data reading system according to claim 2 wherein the data terminal module comprises a pen-based computing system and the pointing instrument comprises a stylus for operating the pen-based computer system.

5. A data reading system according to claim 2 wherein the pointing instrument is usable to actuate the data terminal module.

6. A data reading system according to claim 2 wherein data terminal module comprises a light actuable display screen and the pointing instrument comprises a light pen for operating the data terminal module.

7. A data reading system according to claim 1 wherein the scanner module comprises an integrated unit, including a detector for detecting light reflected and/or scattered off the object being scanned, wherein the clip is spring loaded to be securely and removably attachable to the pointing instrument.

8. A data reading system according to claim 2 wherein the scanner module is operably connected to the data terminal module by a wireless link.

9. A data reading system according to claim 8 further comprising an electronic means for preventing separation of the scanner module from the data terminal, the electronic means sounding a signal when the scanner module becomes separated from the data terminal by a distance exceeding a given amount.

11. A data reading system according to claim 1 further comprising a holster for insertion of the pointing instrument when the scanner module and pointing instrument are not in use.

12. A data reading system according to claim 11 wherein the holster comprises a switch for shutting down the scanner module when the pointing instrument is inserted into the holster.

13. A data reading system according to claim 11 wherein the scanner module further comprises means for activating the scanning mechanism in response to removal of the pointing instrument from the holster.

14. A data reading system according to claim 13 wherein the means for activating comprises a motion sensor device which responds to movement of the scanner module.

15. A data reading system according to claim 13 wherein the means for activating comprises a proximity sensor device which senses when the pointing instrument is proximate to the holster.

16. A data reading system according to claim 15 wherein the means for activating shuts down the scanner module when the sensor senses that the pointing instrument is proximate to the holster and activates the scanner module when the pointing instrument is distant from the holster.

17. A data reading system according to claim 2 further comprising a detector for detecting light reflected and/or scattered off the object being scanned, wherein the detector is located on the data terminal module.

10. A data reading system comprising

a pointing instrument which may be held in a hand of an operator;

a scanner module mounted to the pointing instrument, the scanner module comprising a beam source, a focusing lens for focusing the beam to a desired waist location, a scanning mirror for scanning the focused beam along at least one axis to produce a scanning beam of at least one scan line, and a detector for detecting light reflected and/or scattered off the object being scanned,

wherein the pointing instrument effects aiming of the scanning beam toward an object to be scanned by pointing the pointing instrument at the object,

wherein the scanning mechanism comprises

a fixed member,

a frame member pivotally mounted to the fixed member,

a scanning mirror mounted on the frame member, the frame member being pivotally mounted on bearings to allow the frame member to pivot about a pivoting axis a few degrees in at least two opposite directions,

first and second permanent magnets positioned on the frame member on opposite sides of the pivoting axis,

a first electromagnet mounted to the fixed member proximate the first permanent magnet and a second electro-magnet mounted to the fixed member proximate the second permanent magnet, wherein the first permanent magnet is respectively attracted or repelled to the respective first electro-magnets as a flow of current applied to the electro-magnet is allowed to alternate at a desired frequency.