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Information terminal equipment

A technology for information terminals and outer electrodes, applied in electrical components, transmission systems, etc., can solve the problems of increasing device thickness, cost, and weight, and achieve the effects of reducing coupling capacitance, reducing costs, and improving communication quality

Inactive Publication Date: 2011-05-04
ALPS ALPINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, there is a problem that the influence on the design cannot be avoided by increasing the thickness of the device, and the cost and weight also increase.

Method used

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Embodiment Construction

[0020] In human body communication using an electric field, it is necessary to flow through the outgoing path of the signal via the transmitter-body-receiver capacitive coupling ( Figure 5 Line A) in the circuit, and the loop through which the signal flows through the capacitive coupling of the receiver-a dielectric such as air or a conductor such as a ground wire-receiver ( Figure 5 Line B) in . It is preferable that the body-side electrode 51a (transmitter and receiver) forming an outgoing path increases capacitive coupling with the human body 52 and increases capacitive coupling between the body-side electrodes 51a (transmitter and receiver) via the human body 52 . In addition, it is preferable that the outer electrodes 51b (transmitter and receiver) forming a loop reduce the capacitive coupling with the human body 52 and increase the capacitive coupling between the outer electrodes 51b (transmitter and receiver). Thus, signals can be efficiently transmitted. Furthermore,...

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Abstract

An information terminal equipment capable of reducing a coupling capacitance between a human-body side electrode and an outer-side electrode to reduce a loss and to improve communication quality without changing an original design of the information terminal equipment. A cellular phone (1A, 1B) comprises a display section (11) for visually recognizing information and an input section (12) for inputting information. The display section (11) comprises display elements (11a) and the input section (12) comprises operating buttons (12a). The cellular phone (1) has, within its housing, a pair of built-in electrodes including a human-body side electrode and an outer-side electrode for human-body communication. Within the cellular phone (1), the outer-side electrode is disposed in the proximity of the display section (11) and the human-body side electrode is disposed in the proximity of the input section (12).

Description

technical field [0001] The invention relates to an information terminal device using human body communication. Background technique [0002] With the development of technology in recent years, a communication method using an electric field induced by a human body or the like has been proposed as a novel communication method. Patent Document 1 discloses such a communication system. In this communication system, an electric field corresponding to a modulated signal obtained by modulating an information signal is applied from a transmitter to a human body as a transmission medium, and the electric field transmitted in the human body is checked in a receiver, and demodulation is performed to correspond to the electric field. signal of. [0003] Also, in this system, if Figure 5 As shown, the transmitter and the receiver respectively have a pair of electrode pairs 51, that is, the pairing of the human body side (internal) electrode 51a and the outer (external) electrode 51b, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B13/00
CPCH04B13/005
Inventor 蛇口广行佐佐木真
Owner ALPS ALPINE CO LTD
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