Communication method between host and RFID reader, host device, RFID reader, and RFID communication system

• US 20070279189A1
• Filed: 12/05/2006
• Published: 12/06/2007
• Est. Priority Date: 05/16/2006
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Kyung-ho
• Application Number:
  US11/633,527
• Publication Number:
  US 20070279189A1
• 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

Abstract

A communication method between a host and a radio frequency identification (RFID) reader, a host device, an RFID reader, and an RFID communication system using the method are provided. The communication method between a host device and an RFID reader includes transmitting a tag access command to the RFID reader, either of the host device and the RFID reader determining at least one of a tag access end and a tag access completion, and transmitting a tag access result for the tag access command to the host device. Accordingly, the host device and the RFID reader can provide a protocol when the operation of the RFID reader is limited depending on various conditions of the host device.

Claims

1. A communication method between a host device and a radio frequency identification (RFID) reader, the method comprising:

transmitting a tag access command to the RFID reader;

determining at least one of a tag access end and a tag access completion between the host device and the RFID reader; and

transmitting a tag access result for the tag access command to the host device.

2. The communication method of claim 1, wherein the tag access end is determined based on at least one of a transmission frequency of a fail message, a response time, a number of accessed tags, and whether the host device has performed an original function.

3. The communication method of claim 1 further comprising:

transmitting a tag access end command to the RFID reader; and

operating the host device and the RFID reader in a standby mode, if the host device determines to end tag access.

4. The communication method of claim 1, further comprising:

transmitting a tag access end message to the host device; and

operating the host device and the RFID reader in a standby mode, if the RFID reader determines to end tag access.

5. The communication method of claim 1, wherein the tag access completion is determined based on at least one of access frequency, an access time, and a number of accessed tags.

6. The communication method of claim 1 further comprising:

transmitting a tag access completion command to the RFID reader; and

operating the host device and the RFID reader in a standby mode, if the host device determines to complete tag access.

7. The communication method of claim 1 further comprising:

transmitting a tag access completion command to the host device; and

operating the host device and the RFID reader in a standby mode, if the RFID reader determines to complete tag access.

8. The communication method of claim 1, further comprising:

transmitting a message reporting to the host computer indicating whether an operation according to the tag access command has been performed.

9. The communication method of claim 1, wherein the transmitting the tag access result for the tag access command to the host device is performed after performing the tag access end or the tag access completion.

10. The communication method of claim 1, wherein transmitting the tag access result for the tag access command to the host device transmits tag access results corresponding to respective accessed tags to the host device.

11. The communication method of claim 1, wherein the operation of transmitting the tag access result for the tag access command to the host device transmits all the tag access results for all the accessed tags to the host device.

12. A communication system comprising:

a radio frequency identification (RFID) reader which accesses a tag; and

a host device which transmits a tag access command to the RFID reader and receives a tag access result for the tag access command,

wherein one of the host device and the RFID reader determines at least one of a tag access end and a tag access completion.

13. The communication system of claim 12, wherein the host device determines at least one of the tag access end and the tag access completion, and transmits a command to the RFID reader corresponding to a result of the determination.

14. The communication system of claim 12, wherein the RFID reader determines at least one of the tag access end and the tag access completion, and transmits a command to the host device corresponding to a result of the determination.

15. A host device communicating with a radio frequency identification (RFID) reader, the host device comprising:

an interface unit which provides an interface with the RFID reader; and

a control unit which transfers a tag access command to the RFID reader and receiving a tag access result for the tag access command through the interface unit,

wherein the control unit transmits to the RFID reader a command corresponding to at least one of a tag access end and a tag access completion, and receives from the RFID reader a message that corresponds to at least one of the tag access end and the tag access completion.

16. A radio frequency identification (RFID) reader communicating with a host device, the host device comprising:

an interface unit which provides an interface with the host device; and

a control unit which receives a tag access command transmitted from the host device, performing an operation corresponding to the tag access command, and transmitting a tag access result to the host device through the interface unit,

wherein the control unit transmits to the host device a first command corresponding to at least one of a tag access end and a tag access completion, and receives from the host device a second command corresponding to at least one of the tag access end and the tag access completion.

17. A communication method for a host device communicating with a radio frequency identification (RFID) reader, the method comprising:

transmitting a tag access command to the RFID reader;

transmitting to the RFID reader a command corresponding to at least one of a tag access end and a tag access completion;

receiving from the RFID reader a message that corresponds to at least one of the tag access end and the tag access completion; and

receiving a tag access result for the tag access command.

18. A communication method for a radio frequency identification (RFID) reader communicating with a host device, the method comprising:

receiving a tag access command from the host device;

transmitting to the host device a message corresponding to at least one of a tag access end and a tag access completion;

receiving from the host device a command corresponding to at least one of the tag access end and the tag access completion;

performing an operation corresponding to the tag access command; and

transmitting a tag access result to the host device.