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Transponder, interrogator, and communication device

A technology of transponders and interrogators, applied to antenna supports/mounting devices, inductive record carriers, computer components, etc., can solve problems such as difficult to receive data

Inactive Publication Date: 2012-10-10
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Therefore, in the case of performing high-speed communication between the reader / writer and the non-contact IC card, if the tuning frequency of the non-contact IC card is fixed to the carrier frequency as in the related art, it is difficult to use the non-contact IC card from The reader / writer receives data during high-speed communication

Method used

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  • Transponder, interrogator, and communication device
  • Transponder, interrogator, and communication device
  • Transponder, interrogator, and communication device

Examples

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Embodiment Construction

[0058] Next, embodiments of the present invention will be described in detail with reference to the drawings. figure 1 is a conceptual diagram showing a configuration example of a non-contact IC card according to an embodiment of the present invention. Here, it is assumed that the data transfer speed between the non-contact IC card and the reader / writer is the same as each other and the speed is high speed, and for example, the data transfer speed is 1696 Kbps.

[0059] The non-contact IC card 100 performs communication with a reader / writer via electromagnetic waves, and has an antenna 110 and a tuning frequency control circuit 300 . The antenna 110 receives electromagnetic waves from a communicating reader / writer, and transmits the electromagnetic waves to the corresponding reader / writer. The antenna 110 is a tuning circuit composed of a coil 120 and a tuning frequency adjustment circuit 200 connected in parallel. The frequency at which the electromagnetic wave from the an...

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Abstract

The present invention discloses a transponder, an interrogator and a communication device, the transponder includes an antenna circuit to perform communication with an interrogator, which is a communication subject, via electromagnetic waves. The antenna circuit includes a coil and a variable capacity circuit mutually connected in parallel, and the tuning frequency thereof is a first frequency. The transponder also includes a tuning frequency control circuit to switch the tuning frequency of the coil and the variable capacity circuit mutually connected in parallel to a second frequency in thecase of transmitting electromagnetic waves with the antenna circuit.

Description

[0001] Cross References to Related Applications [0002] The present application contains subject matter related to Japanese Priority Patent Application JP 2008-142131 filed in the Japan Patent Office on May 30, 2008, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to an answering machine and an interrogating machine, and in particular, relates to an answering machine and an interrogating machine realizing high-speed communication via electromagnetic waves. Background technique [0004] In the related art, a communication system composed of an interrogator that stores and reads predetermined information and a transponder that responds to a request command from such an interrogator is widely used. A system that performs communication via electromagnetic waves with such a communication system is called a non-contact communication system. For example, such a non-contact communication system is used with an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/07G06K7/00G06K7/08H01Q1/24H01Q23/00H04B5/48
CPCG06K19/0723
Inventor 北真登
Owner SONY CORP
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