News Column

Patent Issued for Communication Device

February 25, 2014



By a News Reporter-Staff News Editor at Journal of Technology -- Sony Corporation (JP) has been issued patent number 8648767, according to news reporting originating out of Alexandria, Virginia, by VerticalNews editors.

The patent's inventor is Takahashi, Yoshitaka (Kanagawa, JP).

This patent was filed on June 3, 2011 and was published online on February 11, 2014.

From the background information supplied by the inventors, news correspondents obtained the following quote: "The present disclosure relates to a communication device.

"In recent years, contactless communication, which uses contactless communication devices such as a mobile phone on which a contactless IC (Integrated Circuit) card, an RFID (Radio Frequency IDentification) tag, or a contactless IC chip is mounted and readers/writers, has been widely carried out. As the contactless communication has come into widespread use, readers/writers have often been placed at various places. Therefore, not only does the miniaturization of the reader/writer be desired, but the expansion of the communicable range of the reader/writer also is desired. If a reader/writer has a wide communicable range, it would be possible to tolerate a displacement, which can occur when a contactless communication device is held over the reader/writer, to a certain degree.

"Thus, there have been developed technologies for extending the communicable range of a reader/writer using a plurality of loop antennae. For example, JP 2009-232397A describes a technology for extending the communicable range by arranging a plurality of loop antennae on the same plane in a partially overlapping manner. In addition, JP2005-33629A describes a technology for extending the communicable range by stereoscopically combining five loop antennae."

Supplementing the background information on this patent, VerticalNews reporters also obtained the inventor's summary information for this patent: "However, when a plurality of loop antennae are arranged on the same plane as described in JP 2009-232397A, problems would arise that the area in which the antennae are disposed could increase, and when the communicable range above the plane is attempted to be extended, the size of the reader/writer could increase correspondingly.

"Further, when a plurality of loop antennae are combined stereoscopically as described in JP2005-33629A, magnetic fields that are generated by two adjacent loop antennae could mutually interfere with each other. Thus, there has been a problem that the communicable range is difficult to be extended sufficiently.

"In light of the foregoing, it is desirable to provide a novel and improved communication device with a compact device structure and with a communicable range that can be extended sufficiently.

"According to an embodiment of the present disclosure, there is provided a communication device that includes an antenna section including a plurality of loop coils that are combined in a polygonal pyramid shape, and a communication section configured to perform contactless communication with another communication device using the antenna section. The plurality of loop coils may include two adjacent loop coils, and magnetic fields generated by the two loop coils may have mutually opposite phases.

"According to another embodiment of the present disclosure, there is provided a communication device that includes an antenna section including a plurality of loop coils that are combined in a conical shape, and a communication section configured to perform contactless communication with another communication device using the antenna section. The plurality of loop coils may include two adjacent loop coils, and magnetic fields generated by the two loop coils may have mutually opposite phases.

"According to further another embodiment of the present disclosure, there is provided a communication device that includes an antenna section including a plurality of loop coils that are combined in a projecting shape, and a communication section configured to perform contactless communication with another communication device using the antenna section. The plurality of loop coils may include two adjacent loop coils, and magnetic fields generated by the two loop coils may have mutually opposite phases.

"According to such a configuration, a plurality of loop antennae can be combined without their magnetic fields mutually interfering with each other. Further, as the directivities of the respective loop antennae differ from one another, a communicable range that is sufficiently wide can be obtained as the entire antenna section.

"The antenna section may further include a plurality of antenna substrates on which the respective loop coils are disposed, and may have a stereoscopic shape formed by stereoscopically combining the plurality of antenna substrates.

"The stereoscopic shape may be a polygonal pyramid shape, and the antenna section may form the polygonal pyramid shape with the antenna substrates combined so as correspond to respective side faces of the polygonal pyramid shape.

"The antenna section with the polygonal pyramid shape may be arranged such that a bottom face of the antenna section is parallel with a reference plane that serves as a reference when the other communication device is held over the communication device.

"The number of the plurality of loop coils disposed may be even.

"The communication device may further include a magnetic material disposed on at least one of rear surfaces of the plurality of loop coils.

"According to still another embodiment of the present disclosure, there is provided a communication device that includes an antenna section including a plurality of loop coils that are combined to form a shape with mutually angled faces, and a communication section configured to perform contactless communication with another communication device using the antenna section. The plurality of loop coils may include two adjacent loop coils, and magnetic fields generated by the two loop coils may have mutually opposite phases.

"According to yet another embodiment of the present disclosure, there is provided a communication device including an antenna section including a plurality of loop coils that are combined in a hemispherical shape, and a communication section configured to perform contactless communication with another communication device using the antenna section. The plurality of loop coils may include two adjacent loop coils, and magnetic fields generated by the two loop coils may have mutually opposite phases.

"According to the embodiments of the present disclosure described above, a compact device structure can be provided and the communicable range can be extended sufficiently."

For the URL and additional information on this patent, see: Takahashi, Yoshitaka. Communication Device. U.S. Patent Number 8648767, filed June 3, 2011, and published online on February 11, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=47&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=2324&f=G&l=50&co1=AND&d=PTXT&s1=20140211.PD.&OS=ISD/20140211&RS=ISD/20140211

Keywords for this news article include: Technology, Sony Corporation.

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Source: Journal of Technology


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