Wireless communication medium processing apparatus and wireless communication medium processing system

• US 20050184154A1
• Filed: 02/25/2005
• Published: 08/25/2005
• Est. Priority Date: 02/25/2004
• Status: Active Grant

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Yoshinaga, Hiroshi, Mizoguchi, Yoshitaka, Tanaka, Masahiko, Deguchi, Futoshi
• Granted Patent: US 7,072,613 B2
• Time in Patent Office: Days
• US Class Current: 235/385
• CPC Class Codes: G06K 7/10079 the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
• CPC Class Codes: G06K 7/10316 using at least one antenna particularly designed for interrogating the wireless record carriers antennas in general H01Q1/22
• 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
• CPC Class Codes: G06K 7/10356 using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
• CPC Class Codes: H04B 7/0802 using antenna selection H04B7/0868 takes precedence; antenna beam directivity switching H01Q3/24
• CPC Class Codes: H04B 7/0837 using pre-detection combining H04B7/0868 takes precedence
• CPC Class Codes: H04B 7/0871 using different reception schemes, at least one of them being a diversity reception scheme

Abstract

This invention is a wireless communication medium processing apparatus which carries out communication with a wireless communication medium, to carry out at least one of reading and writing as to information which was stored in the wireless communication medium, and has a plurality of antenna, a transmission divider which was connected to the plurality of antennas, and a reception compositor which was connected to the plurality of antennas, and is characterized in that the transmission divider divides an inputted signal to output the plurality of antennas, and the reception compositor combines signals from the plurality of antennas and outputs it.

Claims

1. A wireless communication medium processing apparatus which carries out communication with a wireless communication medium, to carry out reading/writing processing as to information which is stored in the wireless communication medium, comprising:

a plurality of antennas;

a transmission divider, which is connected to the plurality of antennas; and

a reception compositor, which is connected to the plurality of antennas;

wherein the transmission divider divides an input signal between the plurality of antennas; and

the reception compositor combines signals from the plurality of antennas, and output it.

2. The wireless communication medium processing apparatus according to claim 1, further comprising:

a wave detector, which detects a wave detection signal from the signals from the antennas, and

wherein the reception compositor combines the wave detection signal which is detected by the wave detector, and outputs it.

3. The wireless communication medium processing apparatus according to claim 2, wherein the wave detector is installed on the antenna.

4. The wireless communication medium processing apparatus according to claim 2, wherein the wave detector includes a rectifier.

5. The wireless communication medium processing apparatus according to claim 2, wherein the wave detector includes a down-conversion section.

6. The wireless communication medium processing apparatus according to claim 2, wherein the wave detection signal is a base band signal.

7. The wireless communication medium processing apparatus according to claim 1, further comprising:

a reception signal amplifier which amplifiers the signal from the antenna, and

wherein the reception compositor combines a signal which was amplified by the reception signal amplifier, and outputs it.

8. The wireless communication medium processing apparatus according to claim 1, further comprising:

a transmission signal amplifier, which amplifies a signal which is divided by the transmission divider.

9. The wireless communication medium processing apparatus according to claim 1, wherein the transmission divider and the reception compositor are disposed one for each.

10. The wireless communication medium processing apparatus according to claim 1, wherein the signal is overlapped with a direct current component.

11. The wireless communication medium processing apparatus according to claim 1, wherein the transmission divider includes a electric power controller which controls electric power of the signal, in accordance with a position of the antenna or a shape of the antenna.

12. The wireless communication medium processing apparatus according to claim 1, comprising:

a reading/writing section which is connected to both the transmission divider and the reception compositor, and

wherein the reading/writing section carries out the reading/writing processing, with the wireless communication medium which stores a certifiable ID code.

13. The wireless communication medium processing apparatus according to claim 12, wherein the reading/writing section includes a reading/writing ID switch;

wherein the reading/writing ID switch switches the reading/writing processing which is carried out with a wireless communication medium which stores the ID code to be authenticated as the same kind, and

the reading/writing processing which is carried out with a wireless communication medium which stores the ID code to be authenticated as a different kind.

14. The wireless communication medium processing apparatus according to claim 12, wherein the reading/writing ID switch carries out the reading/writing processing which is carried out with a wireless communication medium which stores an ID code to be authenticated as a different kind, by a time slot which is time-divided with respect to each the ID code.

15. The wireless communication medium processing apparatus according to claim 1, wherein the antenna is a loop antenna including an opening portion;

and

at least two of the loop antennas are disposed in such a manner that the opening portions face with each other.

16. A wireless communication medium processing system, comprising:

the wireless communication medium processing apparatus according to claim 1;

and

a gateway;

wherein the plurality of antennas is disposed at the gateway.

17. The wireless communication medium processing system according to claim 16, wherein:

in case that ID authentication is carried out as a result of communication between the antenna which is disposed at the gateway and the wireless communication medium, the gateway is unlocked.

18. The wireless communication medium processing system according to claim 16, further comprising:

a plurality of the gateways;

wherein an arbitrary antenna among the plurality of antennas which is disposed at the plurality of gateways can be selected as an antenna which does not carry out communication, in advance.

19. The wireless communication medium processing system according to claim 16, further comprising:

sorting paths which are disposed at the gateways, respectively.

20. The wireless communication medium processing system according to claim 19,

wherein in case that ID authentication is carried out as a result of communication between the antenna which is disposed at the gateway and a wireless communication medium, a physical object to which the wireless communication medium is attached is sorted in the sorting path which is disposed at the gateway.

21. The wireless communication medium processing system according to claim 20, wherein the physical object is a commercial good.

22. A wireless communication medium processing apparatus which carries out communication with a wireless communication medium, to carry out reading/writing processing as to information which is stored in the wireless communication medium, comprising:

a plurality of antennas;

a reception signal input selector, which is connected to the plurality of antennas and selects a certain antenna from the plurality of antennas connected, and

a wave detector, which is installed between the antenna and the reception signal input selector, and detects a wave detection signal from signals from some antenna which are selected by the reception signal input selector.

23. The wireless communication medium processing apparatus according to claim 22, wherein the wave detector is installed on the antenna.

24. The wireless communication medium processing apparatus according to claim 22, wherein the wave detector includes a rectifier.

25. The wireless communication medium processing apparatus according to claim 22, wherein the wave detector includes a down-conversion section.

26. The wireless communication medium processing apparatus according to claim 22, wherein the wave detection signal is a base band signal.

27. The wireless communication medium processing apparatus according to claim 22, further comprising:

a reception signal amplifier which amplifiers the signal from the antenna.

28. The wireless communication medium processing apparatus according to claim 22, wherein the reception signal input selector is one.

29. The wireless communication medium processing apparatus according to claim 22, wherein the signal is overlapped with a direct current component.

30. The wireless communication medium processing apparatus according to claim 22, further comprising:

a electric power calculator which calculates electric power of the signal from the antenna; and

wherein the reception signal input selector selects a certain antenna from the plurality of antennas, in accordance with the electric power of the signal which is calculated by the electric power calculator.

31. The wireless communication medium processing apparatus according to claim 22, further comprising:

a reading/writing section, which is connected to the reception signal input selector, and

in which the reading/writing section carries out the reading/writing processing, with the wireless communication medium which stores a certifiable ID code.

32. The wireless communication medium processing apparatus according to claim 31, wherein the reading/writing section includes a reading/writing ID switch;

wherein the reading/writing ID switch switches the reading/writing processing which is carried out with a wireless communication medium which stores the ID code to be authenticated as the same kind; and

the reading/writing processing which is carried out with a wireless communication medium which stores the ID code to be authenticated as a different kind.

33. The wireless communication medium processing apparatus according to claim 31, wherein the reading/writing ID switch carries out the reading/writing processing which is carried out with a wireless communication medium which stores an ID code to be authenticated as a different kind, by a time slot which was time-divided with respect to each the ID code.

34. The wireless communication medium processing according to claim 22, wherein the antenna is a loop antenna including an opening portion;

and

at least two of the loop antennas are disposed in such a manner that the opening portions face with each other.

35. A wireless communication medium processing system, comprising:

the wireless communication medium processing apparatus as set forth in claim 22;

and

a gateway,

wherein the plurality of antennas is disposed at the gateway.

36. The wireless communication medium processing system according to claim 35, wherein,

in case that ID authentication is carried out as a result of communication between the antenna which is disposed at the gateway and the wireless communication medium, the gateway is unlocked.

37. The wireless communication medium processing system according to claim 35, further comprising:

a plurality of the gateways;

wherein, an arbitrary antenna among the plurality of antennas which is disposed at the plurality of gateways can be selected as an antenna which does not carry out communication, in advance.

38. The wireless communication medium processing system according to claim 35, further comprising:

sorting paths which are disposed at the gateways, respectively.

39. The wireless communication medium processing system according to claim 38, wherein:

in case that ID authentication is carried out as a result of communication between the antenna which is disposed at the gateway and a wireless communication medium, a physical object to which the wireless communication medium is attached is sorted in the sorting path which is disposed at the gateway.

40. The wireless communication medium processing system according to claim 39, wherein the physical object is a commercial good.