Sony Corporation

National Institute of Information and Communications Technology, Incorporated

Sony Group Corporation

Yoshihisa Takayama

Tadashi Morita

Kunihide Fujii

Susumu Kusakabe

Takao Hiramoto

Tatsuya Kato

Shigeru Arisawa

Kazushige Tsurumi

Katsumi Ikeda

Masaki Yoshida

Yoshitsugu Taki

Yasuaki Kano

Kazuyuki Hirooka

Osamu Nakamura

Joichi Daiba

Masaki Yamada

Mitsunori Sakama

Tadashi Ozue

Hiroshi Ishibashi

Toshiya Kurokawa

Kazuya Koseki

Hideto Suzuki

Katsumi Maekawa

Masahiro Kodama

Morio Toyoshima

Hitoshi Rikukawa

Masahiro Urano

Nobuhisa Toshitani

Hiroo Kunimori

Hironori Miyoshi

Satoshi Oota

Nozomu Nishinaga

Yuko Obata

Masahiro Kiyota

Kenichiro Kikukawa

Kunihide Fuji

A method for a communication device includes determining whether a first radio frequency (RF) signal at a level of at least a first predetermined field threshold is detected. The method also includes generating a second RF signal at a level of at least a second predetermined field threshold greater than the first predetermined field threshold, when the communication device receives an instruction to generate the second RF signal and the determining determines that the first RF signal at the level of at least the first predetermined field threshold is not detected. The method further includes receiving a load modulated RF signal in response to the second RF signal.

Communication system, communication apparatus and communication method

A communication system, a communication apparatus, a communication method, and a program for acquiring the advantage of a plurality of communication protocols is provided. A random number and a first communication information including first identification information of a communication apparatus is sent to another communication apparatus by using near field communication. Second communication information is received by the communication apparatus from the other communication apparatus by using near field communication. The second communication information includes second identification information of the other communication apparatus necessary to a second communication. The second communication is performed between the communication apparatus and the other communication apparatus by using the second communication information received by using the near field communication.

Electromagnetic wave communication system, apparatus, method and program

A communication device includes: an electromagnetic-wave generating unit for outputting an electromagnetic wave; and a transmitting/receiving unit for transmitting data by modulating the electromagnetic wave in accordance with data and receiving data transmitted from the other device by demodulating the electromagnetic wave outputted by the electromagnetic-wave generating unit or the electromagnetic wave outputted by the other device as the other party of communication, wherein the transmitting/receiving unit transmits attribute information indicating communication ability of the device and receives attribute information indicating communication ability of the other device, and the electromagnetic-wave generating unit reduces power of the electromagnetic wave to be outputted after receiving the attribute information.

Communication device, communication method, program and communication system

A communication apparatus is provided and including a carrier wave generator configured to generate a first electromagnetic wave; a modulator configured to modulate the first electromagnetic wave for transmitting a first message to a first communication device; a load modulator configured to modulate a second electromagnetic wave generated by the first communication device for transmitting a second message to the first communication device; a controller configured to control the communication apparatus to: transmit the first message when the second electromagnetic wave is not detected and, transmit the second message when the second electromagnetic wave is detected. A communication method is also provided.

A communication system and communication method enable various types of near field communication. NFC communication apparatuses have two features in that each can perform communication in two communication modes and that each can perform data transmission at a plurality of transfer rates. The two communication modes consist of a passive mode and an active mode. In the passive mode, between the NFC communication apparatuses, for example, a first NFC communication apparatus transmits data to a second NFC communication apparatus by modulating electromagnetic waves generated by itself, while the second NFC communication apparatus transmits data to the first NFC communication apparatus by performing load modulation on the electromagnetic waves generated by the first NFC communication apparatus. Alternatively, in the active mode, either of the NFC communication apparatuses transmits data by modulating electromagnetic waves generated by itself. The present innovation can be applied to, for example, an IC card system, etc.

Communication system, communication method, and data processing apparatus

Communication system, communication apparatus and communication method as well as program

Near field communication using available protocol information

Growing community of inventors

Kanagawa, Japan

Yoshihisa Takayama