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Communication apparatus

A technology of communication device and communication circuit, which is applied in the directions of cooperating devices, near-field transmission systems using transceivers, transmission systems, etc., to achieve the effect of expanding the horizontal communication range

Inactive Publication Date: 2010-10-20
SONY GRP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, assuming that the height and thickness of the portable information device are about 5 cm and 1 cm, respectively, the height difference of the coupling electrode due to the design difference between models or the posture difference of the device placed on the table may be as high as about 5 cm
In other words, the change in the height of the coupling electrode depending on the placement posture of the communication counterpart device may exceed the communication range supported by the short-range wireless transmission technology

Method used

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Embodiment Construction

[0037] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] First, the operating principle of short-range wireless transmission by an extremely low-power UWB communication scheme is described.

[0039] figure 1 The configuration of a short-range wireless transmission system by an extremely low-power UWB communication scheme utilizing electric field coupling is schematically shown. In the figure, coupling electrodes 14 and 24 for transmission / reception are respectively provided in the transmitter 10 and the receiver 20, and are arranged opposite to each other at a distance of about 3 cm, for example, to realize electric field coupling. The transmission circuit part 11 on the side of the transmitter 10 generates a high-frequency transmission signal such as a UWB signal based on transmission data in response to a transmission request from an upper application to propagate the generated signal from the trans...

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Abstract

A communication apparatus includes: a communication circuit section that processes a high-frequency signal for transferring data; a transfer path for the signal connected to the circuit section; a ground; a coupling electrode supported opposite and away in height from the ground; a resonance section that increases a current flowing into the electrode via the path; and a main body housing that assumes a plurality of placement postures and houses the respective components, one end surface of the housing serving as a reading surface in which the electrode is disposed offset from a center of the reading surface. An infinitesimal dipole is formed from a line segment connecting between a center of a charge in the electrode and a center of an image charge in the ground. The signal is transferred toward a communication partner disposed oppositely to form an angle of substantially 0 degrees with a direction of the dipole.

Description

technical field [0001] The present invention relates to a communication device that performs mass data transmission in a short range by an extremely low power UWB (Ultra Wideband) communication scheme using high frequency broadband, and in particular, relates to an extremely low power UWB communication that ensures coupling using an electric field Communication device in the horizontal communication range. Background technique [0002] Non-contact communication is widely used as a medium of authentication information or value information of electronic money or the like. For example, NFC (Near Field Communication) developed by Sony Corporation and Royal Philips Electronics is an RFID (Radio Frequency Identification) standard that defines specifications for NFC communication devices (readers / writers) compatible with ISO compliant Each of a type A IC card, a type B IC card, and a FeLiCa IC card of IEC 14443 communicates. NFC realizes non-contact two-way communication using a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B5/00G06K17/00H01Q1/38H04B5/48
CPCH01Q1/2283
Inventor 前川格
Owner SONY GRP CORP
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