INFORMATION PROCESSING APPARATUS, CORRECTION METHOD, AND RECORDING MEDIUM

• US 20120252502A1
• Filed: 03/28/2012
• Published: 10/04/2012
• Est. Priority Date: 03/30/2011
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: SHIOTSU, Shinichi, Sugano, Hiroyasu, Tanaka, Hideki, Yamashita, Daisuke, Itasaki, Akira, Yokota, koichi
• Granted Patent: US 8,626,202 B2
• Time in Patent Office: Days
• US Class Current: 455/456.6
• CPC Class Codes: G01S 5/0221 Receivers
• CPC Class Codes: G01S 5/14 Determining absolute distances from a plurality of spaced points of known location
• CPC Class Codes: H04B 17/27 for locating or positioning the transmitter
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

An information processing apparatus that conducts positioning on the basis of received signal strength indications obtained from access points, includes, a contact information detector that detects contact information between the information processing apparatus and a dielectric body, a recording module that stores a gain table including gain data corresponding to obtained contact information, a gain data correcting unit that extracts the gain data corresponding to the contact information obtained by the contact information detector from the gain table of the recording module and corrects gain by using the extracted gain data, and a positioning module that conducts the positioning by using the gain obtained by the correcting unit and the received signal strength indications.

Claims

1. An information processing apparatus that conducts positioning on the basis of received signal strength indications obtained from access points, comprising:

a contact information detector that detects contact information between the information processing apparatus and a dielectric body;

a recording module that stores a gain table including gain data corresponding to obtained contact information;

a gain data correcting unit that extracts the gain data corresponding to the contact information obtained by the contact information detector from the gain table of the recording module and corrects gain by using the extracted gain data; and

a positioning module that conducts the positioning by using the gain obtained by the correcting unit and the received signal strength indications.

2. The information processing apparatus according to claim 1, wherein the gain data includes receiving antenna gain data.

3. The information processing apparatus according to claim 2, wherein the contact information detector includes a capacitive sensor that measure capacitance from the dielectric body.

4. The information processing apparatus according to claim 3, further comprising:

a contact level determiner that determines a contact level with the dielectric body on the basis of the capacitance obtained by the capacitive sensor.

5. The information processing apparatus according to claim 4, wherein the gain table includes receiving antenna gain data associated with the contact level.

6. The information processing apparatus according to claim 4, wherein the capacitive sensor is plurally provided at different positions.

7. The information processing apparatus according to claim 6, further comprising:

a contact surface determiner that determines a surface of contact with the dielectric body from differences in the capacitance magnitudes obtained by a plurality of the capacitive sensors.

8. The information processing apparatus according to claim 7, wherein the gain table includes receiving antenna gain data associated with the contact level and the contact surface.

9. The information processing apparatus according to claim 8, further comprising:

an orientation detector that detects information on the orientation of the information processing apparatus.

10. The information processing apparatus according to claim 9, wherein the gain table includes receiving antenna gain data associated with the contact level, the contact surface, and the orientation information.

11. The information processing apparatus according to claim 5, wherein the capacitive sensor is plurally provided at different positions.

12. The information processing apparatus according to claim 11, further comprising:

a contact surface determiner that determines a surface of contact with the dielectric body from differences in the capacitance magnitudes obtained by a plurality of the capacitive sensors.

13. The information processing apparatus according to claim 12, wherein

the gain table includes receiving antenna gain data associated with the contact level and the contact surface.

14. The information processing apparatus according to claim 13, further comprising:

an orientation detector that detects information on the orientation of the information processing apparatus.

15. The information processing apparatus according to claim 14, wherein

the gain table includes receiving antenna gain data associated with the contact level, the contact surface, and the orientation information.

16. A correction method comprising:

detecting contact information between the information processing apparatus and a dielectric body;

storing a gain table including gain data corresponding to obtained contact information;

extracting the gain data corresponding to the contact information obtained by the contact information detector from the gain table of the recording module and corrects gain by using the extracted gain data; and

conducting the positioning by using the gain obtained by the correcting unit and the received signal strength indications.

17. A recording medium having recorded thereon a computer-readable correction program causing a computer to execute processing comprising:

detecting contact information between the information processing apparatus and a dielectric body;

storing a gain table including gain data corresponding to obtained contact information;

extracting the gain data corresponding to the contact information obtained by the contact information detector from the gain table of the recording module and corrects gain by using the extracted gain data; and

conducting the positioning by using the gain obtained by the correcting unit and the received signal strength indications.