Extended range highly selective low power consuming data tag and information display system

• US 5,825,045 A
• Filed: 07/28/1997
• Issued: 10/20/1998
• Est. Priority Date: 02/13/1992
• Status: Expired due to Fees

• Current Assignee: Intermec IP Corporation (Honeywell International Inc.)
• Original Assignee: Norand Corporation (Baker Hughes Company)
• Inventors: Hanson, George E., Miller, Phillip, Koenck, Steven E.
• Primary Examiner(s): Westin, Edward P.
• Assistant Examiner(s): PYO, KEVIN K
• Application Number:
  US08/901,389
• Time in Patent Office: 449 Days
• Field of Search: 250/234, 250/566, 250/568, 235/472, 235/380, 235/382, 340/825.54
• US Class Current: 250/566
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: G06K 19/0728 the arrangement being an optical or sound-based communication interface
• CPC Class Codes: G06K 2207/1011 Aiming
• CPC Class Codes: G06K 7/1097 Optical sensing of electronic memory record carriers, such as interrogation of RFIDs with an additional optical interface

Abstract

An information transducing system including a data tag for digitally storing data and a tag reader for selectively activating data tags such that a terminal may at least receive the digitally stored data in a selected data tag for storage and/or transmission of the digitally stored data in the data tag. The tag reader may be operated so as to transmit a unidirectional beam of radiant energy such that it impinges on a data tag to be read. The radiant energy radiating from the tag reader activates the data tag causing the data tag to transmit its digitally stored data via radiant energy to the tag reader and/or a terminal operably coupled to the tag reader.

Claims

1. A data capture system capable of gathering data via activation of radio frequency tags, comprising:

(a) a radio frequency data tag, comprising

(i) a computer memory device capable of storing a data element,

(ii) a radio frequency transmitter capable of communicating the data element as a radio frequency signal,

(iii) a sensing device having a photosensitive surface, the photosensitive surface being located on said radio frequency data tag so as to be capable of sensing impingement of a light beam, said sensing device being capable of outputting an activation signal upon sensing impingement of a light beam on the photosensitive surface, and

(iv) a computerized processor capable of receiving the activation signal from said sensing device and capable of communication with said radio frequency transmitter and said computer memory device; and

(b) a data collection terminal, comprising

(i) a radio frequency receiver, attached to an antenna, capable of receiving the radio frequency signal transmitted from said radio frequency data tag,

(ii) a terminal computer memory device capable of storing a digital representation of the radio frequency signal received by said radio frequency receiver, and

(iii) a light beam generator capable of projecting a light beam of a size suitable for impinging only upon the photosensitive surface of a desired radio frequency data tag and not upon the photosensitive surface of an adjacent undesired radio frequency data tag;

wherein said radio frequency data tag is activated by the light beam and wherein said radio frequency data tag, upon activation by the light beam, transmits a data element via a different communications media, the radio frequency signal.

2. In the data capture system according to claim 1, wherein said radio frequency data tag further comprises an energy converter capable of converting a light beam impinging on said photosensitive surface, the light beam having been generated by said light beam generator, into operating power for said radio frequency data tag.

3. In the data capture system according to claim 1, wherein said light beam generator is a laser light source capable of generating a laser beam.

4. In the data capture system according to claim 1, wherein said radio frequency data tag further comprises an energy converter capable of converting ambient light impinging on said photosensitive surface into operating power for said radio frequency data tag.

5. In the data capture system according to claim 3, wherein said laser light source can be periodically turned off so as to initiate a timing cycle to define a desired communication window.

6. A data capture system capable of gathering data via activation of acoustical tags, comprising:

(a) an acoustical data tag, comprising

(i) a computer memory device capable of storing a data element,

(ii) an acoustical signal transmitter capable of communicating the data element as an acoustical signal,

(iii) a sensing device having a photosensitive surface, the photosensitive surface being located on said acoustical data tag so as to be capable of sensing impingement of a light beam, said sensing device being capable of outputting an activation signal upon sensing impingement of a light beam on the photosensitive surface, and

(iv) a computerized processor capable of receiving the activation signal from said sensing device and capable of communication with said acoustical transmitter and said computer memory device; and

(b) a data collection terminal, comprising

(i) an acoustical transducer capable of receiving the acoustical signal transmitted from said acoustical data tag,

(ii) a terminal computer memory device capable of storing a digital representation of the acoustical signal received by said acoustical transducer, and

(iii) a light beam generator capable of projecting a light beam of a size suitable for impinging only upon the photosensitive surface of a desired acoustical data tag and not upon the photosensitive surface of an adjacent undesired acoustical data tag;

wherein said acoustical tag is activated by the light beam and wherein said acoustical data tag, upon activation by the light beam, transmits a data element via a different communications media, the acoustical signal.

7. In the data capture system according to claim 6, wherein said acoustical data tag further comprises an energy converter capable of converting a light beam impinging on said photosensitive surface, the light beam having been generated by said light beam generator, into operating power for said acoustical data tag.

8. In the data capture system according to claim 6, wherein said light beam generator is a laser light source capable of generating a laser beam.

9. In the data capture system according to claim 6, wherein said acoustical data tag further comprises an energy converter capable of converting ambient light impinging on said photosensitive surface into operating power for said acoustical data tag.

10. In the data capture system according to claim 8, wherein said laser light source can be periodically turned off so as to initiate a timing cycle to define a desired communication window.

11. A data capture system capable of gathering data via activation of infrared data tags, comprising:

(a) an infrared data tag, comprising

(i) a computer memory device capable of storing a data element,

(ii) an infrared signal generator capable of communicating the data element as an infrared signal,

(iii) a sensing device having a photosensitive surface, the photosensitive surface being located on said infrared data tag so as to be capable of sensing impingement of a light beam, said sensing device being capable of outputting an activation signal upon sensing impingement of a light beam on the photosensitive surface, and

(iv) a computerized processor capable of receiving the activation signal from said sensing device and capable of communication with said infrared signal generator and said computer memory device; and

(b) a data collection terminal, comprising

(i) a infrared signal detector capable of receiving the infrared signal transmitted from said infrared data tag,

(ii) a terminal computer memory device capable of storing a digital representation of the infrared signal received by said infrared detector, and

(iii) a light beam generator capable of projecting a light beam of a size suitable for impinging only upon the photosensitive surface of a desired infrared data tag and not upon the photosensitive surface of an adjacent undesired infrared data tag;

wherein said infrared data tag is activated by the light beam and wherein said infrared data tag, upon activation by the light beam, transmits a data element via a different communications media, the infrared signal.

12. In the data capture system according to claim 11, wherein said infrared data tag further comprises an energy converter capable of converting a light beam impinging on said photosensitive surface, the light beam having been generated by said light beam generator, into operating power for said infrared data tag.

13. In the data capture system according to claim 11, wherein said light beam generator is a laser light source capable of generating a laser beam.

14. In the data capture system according to claim 11, wherein said infrared data tag further comprises an energy converter capable of converting ambient light impinging on said photosensitive surface into operating power for said infrared data tag.

15. In the data capture system according to claim 13, wherein said laser light source can be periodically turned off so as to initiate a timing cycle to define a desired communication window.

16. In the data capture system according to claim 13, wherein said laser light source operates at a characteristic frequency in a green range, wherein said data collection terminal further comprises a second laser light source which operates in the infrared range, wherein said infrared data tag further comprises an erbium doped optical material such that light amplification by stimulated emission results when laser beams from said first and second laser light sources impinge on said erbium doped optical material.

17. In the data capture system according to claim 16, wherein said erbium doped optical material is backed by a mirror so as to direct the amplified infrared energy back to said data collection terminal.