Method for activating a communication mode of a peer communication unit

• US 20060119470A1
• Filed: 12/22/2003
• Published: 06/08/2006
• Est. Priority Date: 01/08/2003
• Status: Active Grant

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Breitfuss, Klemens, Kunkat, Holger
• Granted Patent: US 7,652,556 B2
• Time in Patent Office: Days
• US Class Current: 340/10.100
• 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 7/10029 the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
• CPC Class Codes: G06K 7/10297 arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092 cryptographic protocols H04L9/00; network security protocols H04L63/00; real-time communication protocols in data switching networks H04L65/00; network protocols for data switching network services H04L67/00

Abstract

When activating a desired communication mode of an ID communication partner device (2) from a group of possible communication modes, which group comprises at least a TTF mode and an RTF mode, the ID communication partner device (2) and at least one other ID communication partner device (4) are brought into a communication connection, wherein a carrier signal (CS) is output by the at least one other ID communication partner device (4), which carrier signal (CS) is received by the ID communication partner device (2), and wherein the carrier signal (CS) is repeatedly designated by at least one mode activation signal (AS) by means of the at least one other ID communication partner device (4), and wherein the presence of the mode activation signal (AS) is recognized by the ID communication partner device (2), TS giving a recognition result signal (RRS), and wherein, as a function of the recognition result signal (RRS), the desired communication mode of the ID communication partner device (2) is activated.

Claims

1. A method for activating a desired communication mode of an ID communication partner device from a group of possible communication modes, which group comprises at least a first mode and a second mode,

wherein the ID communication partner device and at least one other ID communication partner device are brought into a communication connection and

wherein a carrier signal is output by the at least one other ID communication partner device, which carrier signal is received by the ID communication partner device, and

wherein the carrier signal is repeatedly designated by at least one mode activation signal by means of the at least one other ID communication partner device, and

wherein the presence of the mode activation signal is recognized by the ID communication partner device, giving a recognition result signal, and

wherein, as a function of the recognition result signal, the desired communication mode of the ID communication partner device is activated.

2. A method as claimed in claim 1, wherein either a TTF mode or an RTF mode is activated in the ID communication partner device.

3. A method as claimed in claim 1, wherein the at least one mode activation signal is formed by at least one sinusoidal signal and the carrier signal is designated by a modulation using the at least one sinusoidal signal.

4. A method as claimed in claim 3, wherein the mode activation signal is recognized by a demodulation by means of correlation.

5. A method as claimed in claim 3, wherein the mode activation signal is recognized by filtering out this signal.

6. A method as claimed in claim 1, wherein the carrier signal is designated only at predefined time intervals.

7. A method as claimed in claim 1, wherein a recognition of the communication status is carried out and wherein the repeated designation of the carrier signal by the mode activation signal is carried out as a function of the communication status.

8. An integrated circuit for an ID communication partner device designed as a communication station, which integrated circuit comprises the following means:

output means (for outputting a carrier signals, which carrier signal can be received by an ID communication partner device, and

generation means for generating at least one mode activation signal, and

designation means, by means of which the carrier signal can be repeatedly designated by the at least one mode activation signal.

9. An integrated circuit as claimed in claim 8,

wherein the generation means are designed to form the at least one mode activation signal by means of at least one sinusoidal signal, and

wherein the designation means are designed to designate the carrier signal with the at least one sinusoidal signal by means of a modulation.

10. An integrated circuit as claimed in claim 8, wherein the designation means are designed to designate the carrier signal only at predefined time intervals.

11. An integrated circuit as claimed in claim 8,

wherein communication status recognition means are also provided, by means of which a communication status of the ID communication partner device can be recognized, and

wherein the designation means are designed to repeatedly designate the carrier signal by the mode activation signal as a function of the communication status.

12. An ID communication partner device, which is designed as a communication station and which is provided with an integrated circuit as claimed in claim 8.

13. An integrated circuit for an ID communication partner device designed as a data carrier, which integrated circuit comprises the following means:

activation means for activating a desired communication mode of the ID communication partner device from a group of possible communication modes and

storage means for storing mode control data of the group of possible communication modes, which group comprises at least a first mode and a second mode, and

reception means for receiving a carrier signal that is output by an ID communication partner device and is designated with a mode activation signal, and

recognition means for recognizing the presence of the at least one mode activation signal, by means of which recognition means a recognition result signal can be generated, as a function of which recognition result signal the activation of the desired communication mode of the ID communication partner device can be activated by the activation means.

14. An integrated circuit as claimed in claim 13, wherein the recognition means are designed to carry out the recognition of the presence of the at least one mode activation signal by a demodulation by means of correlation.

15. An integrated circuit as claimed in claim 13, wherein the recognition means are designed to recognize the presence of the at least one mode activation signal by filtering out this signal.

16. An ID communication partner device, which is designed as a data carrier and which is provided with an integrated circuit as claimed in claim 13