Short range communication system

• US 20030193399A1
• Filed: 04/15/2003
• Published: 10/16/2003
• Est. Priority Date: 12/15/1999
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Cakmakci, Ozan, Hum, Peng Jong, De Velde, Walter Van
• Granted Patent: US 6,842,116 B2
• Time in Patent Office: Days
• US Class Current: 340/573.4
• CPC Class Codes: G06K 19/027 the material being suitable for use as a textile, e.g. woven-based RFID-like labels designed for attachment to laundry items markings attached to laundry items in general D06F93/00
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: G06K 7/10178 including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field comparable booster antennas integrated on the record carrier itself G06K19/07794
• CPC Class Codes: G06K 7/10336 the antenna being of the near field type, inductive coil
• CPC Class Codes: G06K 7/10346 the antenna being of the far field type, e.g. HF types or dipoles

Abstract

Short range communication systems and techniques are described. In an implementation an interrogator held near a person interrogates multiple transponders and receives information separately from the transponders. The interrogator and/or the transponders may be held in an article of clothing or in a personal effect of the person. The transponders may transmit identifying information and/or information associated with the states of the articles of clothing or personal effects of the person. Such a system enables the clothes worn by a person to communicate with a plurality of items and obtain useful information. In addition, a network system may be configured so that any particular transponder may communicate with another transponder or group of transponders of other locales to activate functions, cause actions or otherwise share data and/or information.

Claims

1. A method comprising:

from an interrogator held near a person, interrogating multiple transponders in the vicinity of the person, and

as a result of the interrogating, receiving information separately from the multiple transponders.

2. The method of claim 1 in which the interrogator is held in an article of clothing or personal effect of the person.

3. The method of claim 2 in which the articles of clothing or personal effects comprise at least one of pants, shirts, jackets, coats, earphones, glasses, listening devices, necklaces, rings, watches, bracelets, walking sticks, hockey sticks, guns, cups, and other fashion and everyday accessories and items, hats, socks, shoes, ties, underwear, outerwear, pens, pencils, personal digital assistant devices, laptop computers, desktop computers, bags, backpacks, luggage, wallets, money clips, timepieces, wristwatches, cell phones, desk phones, pedometers, temperature sensors, global positioning devices, environmental sensors, biological sensors whether worn on the garments or below the epidermal skin layer of the human body or embedded or mobile within the human body, fitness devices and other appliances and equipment.

4. The method of claim 1 in which the transponders are associated with respective articles of clothing and personal effects of the person.

5. The method of claim 1 in which the information received from the multiple transponders includes identifying information.

6. The method of claim 1 in which the information received from the multiple transponders includes information associated with states of articles of clothing or personal effects of the person or sensor readings of the environment or of the person.

7. The method of claim 1 further comprising transmitting an activation signal from at least one of the transponders.

9. The method of claim 7 in which the radiator comprises an interrogator.

10. The method of claim 7 in which the interrogation field comprises a radio frequency field.

11. The method of claim 7 in which a transponder is located within a predetermined second distance of at least one location.

12. The method of claim 7 in which the conductive elements comprise electrical conductors.

13. The method of claim 7 further comprising deriving the energy carried along the conductive elements inductively from the interrogation field.

14. The method of claim 7 further comprising:

from a position that is within a predetermined second distance from at least the first location, carrying energy associated with the interrogation field along at least one additional pair of conductive elements to at least a third location.

15. The method of claim 14 in which the at least two respective conductive elements also carry modulations of the interrogation field from the first and second locations to the positions that are within the predetermined distance of the radiator.

8. A method comprising:

radiating an interrogation field over less than a predetermined distance from a radiator,

from at least one position within the predetermined distance, carrying energy associated with the interrogation field along at least one respective conductive element to at least a first location that is farther than the predetermined distance from the radiator, and

at each location, radiating an interrogation field using energy that has been carried along the conductive element.

16. A short-range communication system, comprising:

an interrogator;

a network of coupling ports;

communication lines connecting the coupling ports to the interrogator; and

at least one transponder associated with an object, for establishing communications with at least one of the coupling ports and the interrogator.

17. The system of claim 16, wherein the interrogator includes a microcontroller that transmits at least one interrogation signal to initiate communications.

18. The system of claim 16, further comprising an output device connected to the interrogator.

19. The system of claim 16, further comprising an input device connected to the interrogator.

20. The system of claim 16, wherein the interrogator includes a switch for initiating and terminating interrogation signals.

21. The system of claim 16,wherein the interrogator includes a receiver to receive signals from each of the transponders.

22. The system of claim 16, wherein at least one of the transponders is configured to send an activation signal.

23. The system of claim 16 further comprising electronic circuitry to increase the sensitivity of the coupling ports.

24. A short-range communication method, comprising:

creating a network of coupling ports in a material;

connecting an interrogator to the network; and

activating the coupling ports to interrogate at least one transponder.

25. The method of claim 24, wherein the interrogator generates interrogation signals in a status reporting mode to determine which transponders are within range of the coupling ports.

26. The method of claim 25, wherein the interrogation signals are transmitted along a predetermined or assigned set of communication lines and associated coupling ports in a sequential or broadcast manner.

27. The method of claim 25, wherein an anti-collision protocol is used if at least two transponders respond to the same interrogation signal.

28. The method of claim 24, wherein the interrogator generates interrogation signals in a locating mode to locate the transponders in the network.

29. The method of claim 28, wherein the interrogator signals are transmitted along a predetermined or assigned set of communication lines and associated coupling ports in a sequential or broadcast manner.

30. The method of claim 28, wherein an anti-collision protocol is used if at least two transponders respond to the same interrogation signal.

31. The method of claim 24, wherein interrogator generates interrogation signals in a position mode to determine the position of a particular type of transponder

32. The method of claim 31, wherein the interrogation signals are transmitted along a predetermined or assigned set of communication lines and associated coupling ports in a sequential or broadcast manner.