Combined barcode scanner and radio frequency identification reader with field interpretation array

• US 7,207,488 B2
• Filed: 11/03/2005
• Issued: 04/24/2007
• Est. Priority Date: 11/04/2004
• Status: Active Grant

• Current Assignee: Citrix Systems, Inc. (Cloud Software Group)
• Original Assignee: Precision Dynamics Corporation (Brady Corporation)
• Inventors: Hammerslag, Ed, Wilson, Charles E.
• Primary Examiner(s): Lee; Michael G.
• Assistant Examiner(s): FRANKLIN, JAMARA ALZAIDA
• Application Number:
  US11/163,920
• Publication Number:
  US 20060138232A1
• Time in Patent Office: 537 Days
• Field of Search: 235/440, 235/462.13
• US Class Current: 235/440
• CPC Class Codes: G06K 7/0004 Hybrid readers
• CPC Class Codes: G06K 7/10881 constructional details of hand-held scanners
• CPC Class Codes: G06K 7/1098 the scanning arrangement having a modular construction

Abstract

A combined barcode scanner and radio frequency identification reader includes a microprocessor control unit, an RFID module, a barcode scanner module, a host interface, and user interface(s). The microprocessor control unit utilizes a Field Interpretation Array to parse data into discrete fields that can be input into a host as if typed on a keyboard. The host interface permits the exchange of information between the apparatus and a host computer, and may take the form of an RS-232 connector, a USB connector, or a PS/2 keyboard connector. The user interface(s) may have one or more of a trigger, an LED light, and/or a beeper. When the trigger is in an undepressed state, the apparatus is in program mode. When the trigger is depressed the apparatus can enter one of multiple trigger modes. The trigger mode activates one or both of the RFID module and/or barcode scanner module.

Claims

1. A combined barcode scanner and radio frequency identification (RFID) reader apparatus, comprising:

a microprocessor control unit, wherein the microprocessor control unit utilizes a field interpretation array to parse a continuous string of data into discrete data fields;

an RFID module electrically connected to the microprocessor control unit, comprising an antenna, a radio frequency (RF) amplifier and a reader module;

a barcode scanner module electrically connected to the microprocessor control unit, comprising a camera module and an image module; and

a host interface electrically connected to the microprocessor control unit, permitting the exchange of information between the apparatus and a host computer.

2. The apparatus of claim 1, wherein the host interface comprises an RS-232 interface, a USB interface, or a PS/2 interface.

3. The apparatus of claim 2, wherein the RS-232 interface consists of a transceiver that converts standard RS-232 voltage level signals received from a serial port on the host computer into TTL voltage signals for transmission to a TTL serial interface on the microprocessor control unit.

4. The apparatus of claim 2, wherein the USB interface communicates with the host computer through a USB port emulating a serial interface, as well as, a keyboard interface.

5. The apparatus of claim 4, wherein the USB interface converts data from a TTL voltage signal from the microprocessor control unit into a USB compatible voltage signal for transmission to the host computer.

6. The apparatus of claim 2, wherein the PS/2 interface is a keyboard switch comprising a hex buffer and an analog switch.

7. The apparatus of claim 1, further comprising a user interface electrically connected to the microprocessor control unit wherein the user interface comprises a trigger, an LED light, or a beeper.

8. The apparatus of claim 7, wherein the trigger has multiple positions, each position instructing the microprocessor control unit to initiate at least one of the following functions:

place the apparatus in program mode;

operate the barcode scanner module;

operate the RFID module; and

operate alternately both the barcode scanner module and the RFID module.

9. The apparatus of claim 7, wherein the LED light comprises a bi-color LED light.

10. The apparatus of claim 9, wherein the LED light comprises two bi-color LED lights.

11. The apparatus of claim 1, wherein the reader module selects, reads and writes to RFID tags.

12. The apparatus of claim 1, wherein the RF amplifier comprises a power supply, a transmitter and a receiver.

13. The apparatus of claim 12, wherein the transmitter comprises first and second signal matching circuits, a signal amplifier, and a passive filter.

14. The apparatus of claim 12, wherein the receiver comprises an envelope detector, a passive filter, an active filter, and a comparator circuit.

15. The apparatus of claim 1, wherein the field interpretation array comprises data fields corresponding to field number, field address, field length, field header and field trailer.

16. A combined barcode scanner and radio frequency identification (RFID) reader apparatus, comprising:

a microprocessor control unit, wherein the microprocessor control unit utilizes a field interpretation array to parse a continuous string of data into discrete data fields;

an RFID module electrically connected to the microprocessor control unit, comprising an antenna, a radio frequency (RF) amplifier and a reader module, wherein the reader module selects, reads and writes RFID tags, wherein the RF amplifier comprises a power supply, a transmitter and a receiver;

a barcode scanner module electrically connected to the microprocessor control unit, comprising a camera module and an image module;

a host interface electrically connected to the microprocessor control unit, permitting the exchange of information between the apparatus and a host computer, wherein the host interface comprises an RS-232 interface, a USB interface, or a PS/2 interface; and

a user interface electrically connected to the microprocessor control unit, wherein the user interface comprises a trigger, an LED light, or a beeper.

17. The apparatus of claim 16, wherein the trigger has multiple positions, each position instructing the microprocessor control unit to initiate at least one of the following functions:

place the apparatus in program mode;

operate the barcode scanner module;

operate the RFID module; and

operate alternately both the barcode scanner module and the RFID module.

18. The apparatus of claim 16, wherein the LED light comprises a bi-color LED light.

19. The apparatus of claim 18, wherein the LED light comprises two bi-color LED lights.

20. The apparatus of claim 16, wherein the RS-232 interface consists of a transceiver that converts standard RS-232 voltage level signals received from a serial port on the host computer into TTL voltage signals for transmission to a TTL serial interface on the microprocessor control unit.

21. The apparatus of claim 16, wherein the USB interface communicates with the host computer through a USB port emulating a serial interface, as well as, a keyboard interface.

22. The apparatus of claim 21, wherein the USB interface converts data from a TTL voltage signal from the microprocessor control unit into a USB compatible voltage signal for transmission to the host computer.

23. The apparatus of claim 16, wherein the PS/2 interface is a keyboard switch comprising a hex buffer and an analog switch.

24. The apparatus of claim 16, wherein the transmitter comprises first and second signal matching circuits, a signal amplifier, and a passive filter.

25. The apparatus of claim 16, wherein the receiver comprises an envelope detector, a passive filter, an active filter, and a comparator circuit.

26. The apparatus of claim 16, wherein the field interpretation array comprises data fields corresponding to field number, field address, field length, field header and field trailer.