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Communication apparatus

A communication device and data communication technology, applied in wireless communication, near-field transmission systems using transceivers, inductive record carriers, etc., can solve the problems of low transmission speed, difficulty in high-capacity data communication, etc., and achieve an increase in data communication speed. Effect

Inactive Publication Date: 2009-06-17
SONY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] As shown in the table above, the maximum transmission speed defined by the NFC IP-1 standard is as low as 424kbps, and is very low compared to other common wireless communication standards (eg, WiFi, Bluetooth, etc.)
Therefore, it is difficult to apply NFC to high-capacity data communication of image data, audio data, video data, etc.

Method used

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Embodiment Construction

[0052] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0053] The NFC standard is established as an RFID communication standard in the 13.56 MHz frequency band, and is currently widely used for identification using an RFID card, electronic money payment, and the like. In the NFC IP-1 standard, the transmission speed, modulation scheme and coding system are determined according to the transmission direction and communication mode (see Table 1), but the maximum transmission speed of Felica is 424Kbps, which is different from other wireless communication standards (such as Bluetooth, IEEE 802.11, etc.) are very low.

[0054] On the other hand, NFC technology has several advantages as follows.

[0055] (1) NFC technology uses a non-contact interface, which achieves great flexibility in appearance. Its contact points will not be worn or damaged, and it can prevent dust accumulation, splashing wa...

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Abstract

Disclosed herein is a communication apparatus that performs short-range wireless communication in a contactless manner. The communication apparatus includes: a large antenna; a first wireless processing section configured to perform data communication via electromagnetic induction-type using the large antenna; a small antenna placed inside the large antenna; and a second wireless processing section configured to perform data communication using the small antenna.

Description

[0001] References to related applications [0002] The present invention contains subject matter related to Japanese Patent Application JP 2007-319567 filed in the Japan Patent Office on Dec. 11, 2007, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to a communication device that performs near field communication in a contactless manner. Specifically, the present invention relates to a non-contact communication device such as a communication terminal (transponder), which does not have its own radio wave source and transmits data wirelessly to a device as a communication partner (read-write device). [0004] More specifically, the present invention relates to a communication device that performs non-contact communication using a primary coil in a reader / writer and a secondary coil in a transponder by electromagnetic induction. In particular, the present invention relates to a communication device with per...

Claims

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Application Information

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IPC IPC(8): G06K7/00
CPCH04B5/0075H04B5/0087H04B5/02H04B5/0081H04B5/263H04B5/24H04B5/26H04B5/48H04B7/00H04W88/02
Inventor 后藤哲郎深见正远藤彰
Owner SONY CORP
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