US 7,248,834 B2Granted

Communication apparatus

AssigneeSony Corporation

InventorsTakashi Matsuo, Kunihide Fujii, Kazuyuki Sakamoto

Life of this patent

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Abstract

A portable terminal includes a near-field communication (NFC) device for performing information communication via near-field communication; a write button; and a read button. In order to write information stored in the portable terminal into an information providing apparatus, a user moves the portable terminal close to the information providing apparatus such that a distance between the portable terminal and the information providing apparatus is 10 cm or less while pressing the write button. In order to read information stored in the information providing apparatus into the portable terminal, a user moves the portable terminal close to the information providing apparatus such that a distance between the portable terminal and the information providing apparatus is 10 cm or less while pressing the read button.

Claims7

Dependent claims

A communication apparatus for performing data transmission by electromagnetic waves to an external apparatus and data transfer by load modulation with respect to electromagnetic waves transmitted from the external apparatus, the communication apparatus comprising:

an antenna;
a receiving and demodulating unit for detecting current flowing in the antenna and configured to detect a reception signal received from the external apparatus;
a modulating and transmitting unit configured to modulate a carrier in accordance with a transmission signal to be transmitted to the external apparatus and for transmitting the modulated carrier via the antenna;
a transmission and reception control unit configured to control reception of the reception signal by the receiving and demodulating unit and transmission of the transmission signal by the modulating and transmitting unit;
a storage unit configured to store data;
and
an operation control unit configured to control an operation by a user, the operation control unit including a state setting part configured to selectively set the communication apparatus to a transmission state and an acquisition state, wherein:
when the state setting part sets the communication apparatus to the transmission state and the communication apparatus is capable of communicating with the external apparatus, the transmission and reception control unit transmits the data stored in the storage unit;
and
when the state setting part sets the communication apparatus to the acquisition state and the communication apparatus is capable of communicating with the external apparatus, the transmission and reception control unit acquires data transmitted from the external apparatus and stores the acquired data in the storage unit,
the state setting part includes a motion detector for detecting motion of the communication apparatus;
when the communication apparatus is moved in a first direction after the communication apparatus becomes capable of communicating with the external apparatus, the communication apparatus is set to the transmission state to transmit the data stored in the storage unit;
and
when the communication apparatus is moved in a second direction, which is opposite to the first direction, after the communication apparatus becomes capable of communicating with the external apparatus, the communication apparatus is set to the acquisition state to acquire the data transmitted from the external apparatus and to store the acquired data in the storage unit.

11 more elements

A communication apparatus capable of data transmission by electromagnetic waves to an external apparatus and data transfer by load modulation with respect to electromagnetic waves transmitted from the external apparatus, the communication apparatus comprising:

an antenna;
a receiving and demodulating unit configured to detect current flowing in the antenna and for demodulating a reception signal received from the external apparatus;
a modulating and transmitting unit configured to modulate a carrier in accordance with a transmission signal to be transmitted to the external apparatus and for transmitting the modulated carrier via the antenna;
a transmission and reception control unit configured to control reception of the reception signal by the receiving and demodulating unit and transmission of the transmission signal by the modulating and transmitting unit;
a storage unit configured to store data;
and
an operation control unit configured to control an operation by a user, the operation control unit including a state setting part configured to selectively set the communication apparatus to a permitted state and an inhibited state, wherein:
when the state setting part sets the communication apparatus to the permitted state, the transmission and reception control unit accepts a data acquisition request or a data write request from the external apparatus, and transmits the data stored in the storage unit to the external apparatus in accordance with the data acquisition request or writes data transmitted from the external apparatus into the storage unit in accordance with the data write request;
and
when the state setting part sets the communication apparatus to the inhibited state, the transmission and reception control unit rejects the data acquisition request or the data write request from the external apparatus, and inhibits transmission of the data stored in the storage unit or inhibits writing of the data transmitted from the external apparatus into the storage unit.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/887,862Filed 12 Jul 2004
Priority: JP 2003-27783422 Jul 2003
Published: US 2005/0064814 A124 Mar 2005
Granted: 24 Jul 2007
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

G06K 7/10237
Sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves: the reader and the record carrier being capable of…
G06K 19/0723
With integrated circuit chips: the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on…
H04N 21/41265
The peripheral being portable, e.g. PDAs or mobile phones: having a remote control device for bidirectional communication between the remote…
H04N 21/42204
Input-only peripherals , i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]: user interfaces…