US20100022188A1 - Communication apparatus and communication control method - Google Patents
Communication apparatus and communication control method Download PDFInfo
- Publication number
- US20100022188A1 US20100022188A1 US12/499,715 US49971509A US2010022188A1 US 20100022188 A1 US20100022188 A1 US 20100022188A1 US 49971509 A US49971509 A US 49971509A US 2010022188 A1 US2010022188 A1 US 2010022188A1
- Authority
- US
- United States
- Prior art keywords
- close proximity
- wireless transfer
- proximity wireless
- transfer device
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000004891 communication Methods 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims description 23
- 238000012546 transfer Methods 0.000 claims abstract description 151
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 230000004044 response Effects 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- 230000001413 cellular effect Effects 0.000 description 31
- 230000008569 process Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- One embodiment of the invention relates to a communication apparatus and communication control method which communicates by means of a close proximity wireless transfer method.
- a device of the close proximity wireless transfer method needs to execute standby processing for receiving a signal sent from another device. Consequently, the device consumes power even in a standby state in which communication such as data transfer is not actually made. Since the device using the close proximity wireless transfer method is used in a portable terminal device or the like, and long-term, continuous use is assumed, it is desirable to reduce the power consumption as much as possible.
- Jpn. Pat. Appln. KOKAI Publication No. 2005-311918 discloses a potable terminal device including a magnetic sensor and infrared communication module.
- the infrared ray has strong directivity. To successfully make infrared communication, therefore, precise alignment is necessary.
- the magnetic sensor is used to align the infrared communication module of the device with that of another device. If the magnetic sensor detects that the portable terminal devices are aligned with each other, the devices can execute infrared communication.
- the portable terminal device of Jpn. Pat. Appln. KOKAI Publication No. 2005-311918 does not consider the distance to another device. If the devices are in a close proximity state, i.e., if the distance between them falls within a predetermined range of communication, it is possible to execute close proximity wireless transfer. To efficiently reduce the power consumption of the close proximity wireless transfer, therefore, it is necessary to implement a new power saving technique which considers the distance between the devices.
- FIG. 1 is an exemplary block diagram showing the arrangement of a communication apparatus according to an embodiment of the present invention
- FIG. 2 is an exemplary view for explaining an example of use of two communication apparatuses according to the embodiment
- FIG. 3 is an exemplary flowchart showing the procedure of processing when two communication apparatuses according to the embodiment enter a close proximity state
- FIG. 4 is an exemplary flowchart showing the procedure of processing when the two communication apparatuses according to the embodiment cancel the close proximity state.
- a communication apparatus comprising: a close proximity wireless transfer device configured to execute a close proximity wireless transfer; a closeness detection module configured to detect that the close proximity wireless transfer device and an external device are in a close proximity state, wherein power which the closeness detection module consumes is lower than power which the close proximity wireless transfer device consumes in an idle state; and a device control module configured to activate the close proximity wireless transfer device when the closeness detection module detects the close proximity state.
- This communication apparatus 200 is implemented as, e.g., a portable terminal device such as a cellular phone or PDA, a personal computer, or a consumer device such as a TV or audio player.
- the communication apparatus 200 includes a system control module 201 , ROM 202 , RAM 203 , close proximity wireless transfer device 204 , closeness detection module 205 , and device enable/disable module 206 .
- the system control module 201 controls the operations of respective modules of the communication apparatus 200 .
- the system control module 201 includes a CPU 201 a, and is connected to the ROM 202 , RAM 203 , close proximity wireless transfer device 204 , closeness detection module 205 , and device enable/disable module 206 .
- the RAM 203 stores instructions, data and stacks in process.
- the ROM 202 stores application programs, drivers, and the like.
- the CPU 201 a loads instructions and data stored in the ROM 202 onto the RAM 203 , and executes required processes.
- the CPU 201 a executes, for example, an application program for transferring data such as a data file using the close proximity wireless transfer.
- the CPU 201 a executes a process on the basis of information which pertains to a close proximity state with another communication apparatus which is sent from the closeness detection module 205 , and the operation state of the close proximity wireless transfer device 204 which is sent from the device enable/disable module 206 .
- the close proximity wireless transfer device 204 executes the close proximity wireless transfer.
- the close proximity wireless transfer is a wireless communication technique capable of data communication only within a relatively short range such as several centimeters like Near Field Communication (NFC).
- NFC Near Field Communication
- the close proximity wireless transfer between the close proximity wireless transfer device 204 and another close proximity wireless transfer device is executed as a peer-to-peer communication.
- the range of communication is, for example, 3 cm.
- Wireless connection between the close proximity wireless transfer device 204 and another close proximity wireless transfer device can be established only when they are brought close to each other so that their distance falls within a predetermined distance (e.g., 3 cm).
- the close proximity wireless transfer uses an induced electric field.
- As the close proximity wireless transfer method for example, TransferJET can be used.
- the TransferJET is the close proximity wireless transfer method using UWB, and can realize high-speed data transfer.
- the close proximity wireless transfer device 204 includes an antenna module 207 .
- the antenna module 207 sends/receives data to/from another communication apparatus by means of signals using an induced electric field.
- the closeness detection module 205 detects the close proximity state between the close proximity wireless transfer device 204 and another close proximity wireless transfer device. That is, the closeness detection module 205 detects, as the close proximity state, that another close proximity wireless transfer device is brought within the predetermined distance from the close proximity wireless transfer device 204 . The closeness detection module 205 notifies the system control module 201 and device enable/disable module 206 of the detection of another close proximity wireless transfer device.
- the power consumption of the closeness detection module 205 in a standby or operation state is smaller than that of the close proximity wireless transfer device 204 in an idle state.
- a detectable distance within which the closeness detection module 205 can detect the close proximity state with another close proximity wireless transfer device does not limit a range of communication within which the close proximity wireless transfer device 204 can communicate with another close proximity wireless transfer device. That is, the detectable distance is greater than or equal to the range of communication and the difference between the distances is less than or equal to a predetermined value. If, for example, the range of communication is 3 cm, assume that the detectable distance is 5 cm.
- the detectable distance of the closeness detection module 205 does not limit the range of communication of the close proximity wireless transfer device 204 .
- a device which uses an induced magnetic field is available.
- the device which uses an induced magnetic field includes FeliCa®, an IC chip, and a non-contact charging device.
- the device enable/disable module 206 controls the close proximity wireless transfer device 204 on the basis of the notification from the closeness detection module 205 .
- the device enable/disable module 206 Upon reception of a notification representing the close proximity state from the closeness detection module 205 , the device enable/disable module 206 returns the close proximity wireless transfer device 204 from a sleep state, or sets it in a circuit-power-on state.
- the device enable/disable module 206 sets the close proximity wireless transfer device 204 in the sleep state or a circuit-power-off state.
- the sleep state is an operation in a so-called power saving mode in which the close proximity wireless transfer device 204 stands by with a power consumption lower than in a normal operation state. Return from the sleep state indicates that the close proximity wireless transfer device 204 which has operated in the power saving mode resumes the normal operation state.
- FIGS. 2A and 2B show a use example when there exist two communication apparatuses 200 according to the embodiment.
- the communication apparatuses 200 are shown as cellular phones.
- this embodiment is available in not only a cellular phone but also a personal computer or a consumer device such as a TV or audio player.
- Cellular phones a 1 and b 1 respectively perform active operations on cellular phones a 2 and b 2 which are in the standby state.
- the operations include transfer of image or music data.
- connection by the close proximity wireless transfer is established by bringing cellular phone a 1 close to cellular phone a 2 , and data transfer is executed between cellular phones a 1 and a 2 .
- connection by the close proximity wireless transfer is disconnected by moving cellular phone b 1 away from cellular phone b 2 after the data transfer ends.
- connection (communication) between the cellular phones (communication apparatuses)” and “connection (communication) between the close proximity wireless transfer devices 204 ” are synonymous, and both mean connection (communication) between the close proximity wireless transfer devices 204 provided for the cellular phones.
- close proximity wireless transfer devices 204 provided for cellular phones a 2 and b 2 on a standby side need to be always in the standby state for receiving signals sent from cellular phones a 1 and b 1 , respectively. Consequently, the close proximity wireless transfer devices 204 consume power even in the standby state in which communication such as data transfer is not actually made. This is a problem for a communication apparatus including a cellular phone which is assumed to be continuously used for a long time.
- the communication apparatus 200 of the embodiment includes, therefore, the closeness detection module 205 which consumes lower power than the close proximity wireless transfer device 204 , as described above.
- the close proximity wireless transfer device 204 is usually in the sleep (power saving) or circuit-power-off state.
- the close proximity wireless transfer device 204 detects another close proximity wireless transfer device, the close proximity wireless transfer device 204 returns from the sleep state, or is set in the circuit-power-on state. That is, the close proximity wireless transfer device 204 starts operation by using, as a trigger, the detection of another close proximity wireless transfer device by the closeness detection module 205 which is always in the operation state.
- the close proximity wireless transfer device 204 of cellular phone a 1 returns from the sleep state, or enters the circuit-power-on state by using, as a trigger, the execution of an application program for executing the close proximity wireless transfer between the close proximity wireless transfer devices.
- the closeness detection module 205 of cellular phone a 2 detects that cellular phone a 1 is in the close proximity state.
- the closeness detection module 205 of cellular phone a 2 notifies the device enable/disable module 206 of the close proximity state of cellular phone a 1 .
- the device enable/disable module 206 of cellular phone a 2 returns the close proximity wireless transfer device 204 from the sleep state, or sets it in the circuit-power-on state. With this operation, it is possible to establish connection between the close proximity wireless transfer devices 204 provided for cellular phones a 1 and a 2 , and execute communication such as data transfer.
- the closeness detection module 205 of cellular phone b 1 detects the cancellation of the close proximity state of cellular phone b 2 .
- the closeness detection module 205 of cellular phone b 2 also detects the cancellation of the close proximity state of cellular phone b 1 .
- Device enable/disable modules 206 provided for cellular phones b 1 and b 2 set the close proximity wireless transfer devices 204 in the sleep or circuit-power-off state, respectively. With this operation, each of the close proximity wireless transfer devices 204 is in the sleep or circuit-power-off state until another close proximity wireless transfer device enters the close proximity state next, thereby reducing the power consumption.
- FIG. 3 shows an operation when the two communication apparatuses 200 are brought close to each other, and enters the close proximity state.
- the two communication apparatuses 200 are shown as a communication apparatus 200 a and a communication apparatus 200 b.
- Communication apparatuses 200 a and 200 b are not in the close proximity state, and close proximity wireless transfer devices 204 provided for communication apparatuses 200 a and 200 b are in the sleep or circuit-power-off state (block S 301 ).
- a CPU 201 a of communication apparatus 200 a activates an application program for transferring the file or the like by the close proximity wireless transfer to communication apparatus 200 b (block S 302 ).
- the activated application program executes the close proximity wireless transfer through the close proximity wireless transfer device 204 .
- the CPU 201 a of communication apparatus 200 a uses the activation of the application program as a trigger to return the close proximity wireless transfer device 204 from the sleep state or set the close proximity wireless transfer device 204 in the power-on state by using an application program or driver (block S 303 ).
- Communication apparatus 200 a is set to a connection requesting side (Initiator) which requests connection to communication apparatus 200 b, or a connection standby side (Responder) which waits for a connection request from communication apparatus 200 b (block S 304 ).
- connection requesting side Initiator
- Responder connection standby side
- the close proximity wireless transfer device 204 on the connection requesting side executes a process of sending a connection request signal to the close proximity wireless transfer device 204 on the connection standby side.
- the close proximity wireless transfer device 204 on the connection standby side performs a process of detecting the connection request signal at, e.g., regular intervals.
- Communication apparatuses 200 a and 200 b are brought close to each other, and enter the close proximity state (block S 305 ).
- a closeness detection module 205 of communication apparatus 200 a detects the close proximity state with communication apparatus 200 b, and notifies a device enable/disable module 206 of communication apparatus 200 a of it.
- a closeness detection module 205 of communication apparatus 200 b also detects the close proximity state with communication apparatus 200 a, and notifies a device enable/disable module 206 of communication apparatus 200 b of it (block S 306 ).
- the device enable/disable module 206 of communication apparatus 200 b returns the close proximity wireless transfer device 204 from the sleep state, or sets the close proximity wireless transfer device 204 in the power-on state (block S 307 ).
- the close proximity wireless transfer device 204 of communication apparatus 200 b is set to the connection standby side when the close proximity wireless transfer device 204 of communication apparatus 200 a is on the connection requesting side, and is set to the connection requesting side when the close proximity wireless transfer device 204 of communication apparatus 200 a is on the connection standby side (block S 308 ).
- connection between the close proximity wireless transfer device 204 of communication apparatus 200 a and that of communication apparatus 200 b is established (block S 309 ).
- the close proximity wireless transfer device 204 of communication apparatus 200 a on the connection requesting side sends a connection request signal.
- the close proximity wireless transfer device 204 of communication apparatus 200 b on the connection standby side detects the connection request signal and responds to it, thereby establishing the connection.
- Communication apparatus 200 a transfers data to communication apparatus 200 b by the close proximity wireless transfer through the application program (block S 310 ).
- the close proximity wireless transfer devices 204 operate by using as a trigger the detection of the close proximity state by the closeness detection modules 205 provided for the communication apparatuses 200 , respectively. Since the close proximity wireless transfer devices 204 are in the sleep or power-off state until the closeness detection modules 205 detect the close proximity state, it is possible to save the power consumption of the close proximity wireless transfer devices 204 .
- FIG. 4 shows an operation when the close proximity state is cancelled by moving the two communication apparatuses 200 a and 200 b which have been communicating away from each other.
- Communication apparatuses 200 a and 200 b are connected with each other by the close proximity wireless transfer and data is transferred between them (block S 401 ). After the data transfer is completed, communication apparatuses 200 a and 200 b are moved away from each other, and the close proximity state is cancelled (block S 402 ). The connection between the close proximity wireless transfer device 204 of communication apparatus 200 a and that of communication apparatus 200 b is disconnected (block S 403 ).
- Two scenarios are considered for a method of setting the close proximity wireless transfer devices 204 of communication apparatuses 200 a and 200 b in the sleep or circuit-power-off state.
- the closeness detection module 205 of the communication apparatus 200 detects the cancellation of the close proximity state.
- the closeness detection module 205 of communication apparatus 200 a detects the cancellation of the close proximity state with communication apparatus 200 b, and notifies the device enable/disable module 206 of it.
- the closeness detection module 205 of communication apparatus 200 b also detects the cancellation of the close proximity state with communication apparatus 200 a, and notifies the device enable/disable module 206 of it (block S 404 ).
- the device enable/disable module 206 of communication apparatus 200 a sets the close proximity wireless transfer device 204 in the sleep or power-off state.
- the device enable/disable module 206 of communication apparatus 200 b also sets the close proximity wireless transfer device 204 in the sleep or power-off state (block S 405 ).
- the close proximity wireless transfer device 204 of the communication apparatus 200 detects the disconnection (connection disable).
- the close proximity wireless transfer device 204 of communication apparatus 200 a sets itself in the sleep or power-off state.
- the close proximity wireless transfer device 204 of communication apparatus 200 b also sets itself in the sleep or power-off state (block S 406 ). Note that it is possible to determine to use the process in the first or second scenario in accordance with the form of use of the communication apparatus 200 , an application program executed in the communication apparatus 200 , or the like.
- Either of the processes in the first and second scenarios sets the close proximity wireless transfer devices 204 of communication apparatuses 200 a and 200 b in the sleep or power-off state (block S 407 ).
- the above processing sets the close proximity wireless transfer devices 204 in the sleep or power-off state by using, as a trigger, the detection of the cancellation of the close proximity state by each of the closeness detection modules 205 of the communication apparatuses 200 or the disconnection of the connection established between the close proximity wireless transfer devices 204 when communication apparatuses 200 a and 200 b are moved away from each other. This makes it possible to save the power consumption of the close proximity wireless transfer devices 204 .
- a closeness detection module of a communication apparatus can detect that a close proximity wireless transfer device and another close proximity wireless transfer device are in a close proximity state in which their distance falls within a range of communication, and that the close proximity state is cancelled.
- the power consumption of the operation of the closeness detection module is lower than that of the close proximity wireless transfer device in an idle state, thereby saving the power consumption of the close proximity wireless transfer.
- the various modules of the systems described herein can be implemented as software applications, hardware and/or software modules, or components on one or more computers, such as servers. While the various modules are illustrated separately, they may share some or all of the same underlying logic or code.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
- Near-Field Transmission Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
According to one embodiment, a communication apparatus comprises a close proximity wireless transfer device, a closeness detection module and a device control module. The close proximity wireless transfer device executes a close proximity wireless transfer. The closeness detection module detects that the close proximity wireless transfer device and an external device are in a close proximity state. Power which the closeness detection module consumes is lower than power which the close proximity wireless transfer device consumes in an idle state. The device control module is configured to activate the close proximity wireless transfer device when the closeness detection module detects the close proximity state.
Description
- This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2008-191024, filed Jul. 24, 2008, the entire contents of which are incorporated herein by reference.
- 1. Field
- One embodiment of the invention relates to a communication apparatus and communication control method which communicates by means of a close proximity wireless transfer method.
- 2. Description of the Related Art
- In a close proximity wireless transfer method, when the user brings devices close to each other, the devices can communicate with each other. Since this operation is intuitive and simple for the user, the close proximity wireless transfer is promised to be widespread in portable terminal devices and the like in the future.
- A device of the close proximity wireless transfer method needs to execute standby processing for receiving a signal sent from another device. Consequently, the device consumes power even in a standby state in which communication such as data transfer is not actually made. Since the device using the close proximity wireless transfer method is used in a portable terminal device or the like, and long-term, continuous use is assumed, it is desirable to reduce the power consumption as much as possible.
- Jpn. Pat. Appln. KOKAI Publication No. 2005-311918 discloses a potable terminal device including a magnetic sensor and infrared communication module. The infrared ray has strong directivity. To successfully make infrared communication, therefore, precise alignment is necessary. In the portable terminal device of Jpn. Pat. Appln. KOKAI Publication No. 2005-311918, the magnetic sensor is used to align the infrared communication module of the device with that of another device. If the magnetic sensor detects that the portable terminal devices are aligned with each other, the devices can execute infrared communication.
- The portable terminal device of Jpn. Pat. Appln. KOKAI Publication No. 2005-311918 does not consider the distance to another device. If the devices are in a close proximity state, i.e., if the distance between them falls within a predetermined range of communication, it is possible to execute close proximity wireless transfer. To efficiently reduce the power consumption of the close proximity wireless transfer, therefore, it is necessary to implement a new power saving technique which considers the distance between the devices.
- A general architecture that implements the various features of the invention will now be described with reference to the drawings. The drawings and the associated descriptions are provided to illustrate embodiments of the invention and not to limit the scope of the invention.
-
FIG. 1 is an exemplary block diagram showing the arrangement of a communication apparatus according to an embodiment of the present invention; -
FIG. 2 is an exemplary view for explaining an example of use of two communication apparatuses according to the embodiment; -
FIG. 3 is an exemplary flowchart showing the procedure of processing when two communication apparatuses according to the embodiment enter a close proximity state; and -
FIG. 4 is an exemplary flowchart showing the procedure of processing when the two communication apparatuses according to the embodiment cancel the close proximity state. - Various embodiments according to the invention will be described hereinafter with reference to the accompanying drawings. In general, according to one embodiment of the invention, there is provided a communication apparatus comprising: a close proximity wireless transfer device configured to execute a close proximity wireless transfer; a closeness detection module configured to detect that the close proximity wireless transfer device and an external device are in a close proximity state, wherein power which the closeness detection module consumes is lower than power which the close proximity wireless transfer device consumes in an idle state; and a device control module configured to activate the close proximity wireless transfer device when the closeness detection module detects the close proximity state.
- First, the arrangement of a
communication apparatus 200 according to one embodiment of the present invention will be described with reference toFIG. 1 . Thiscommunication apparatus 200 is implemented as, e.g., a portable terminal device such as a cellular phone or PDA, a personal computer, or a consumer device such as a TV or audio player. Thecommunication apparatus 200 includes asystem control module 201,ROM 202,RAM 203, close proximitywireless transfer device 204,closeness detection module 205, and device enable/disablemodule 206. - The
system control module 201 controls the operations of respective modules of thecommunication apparatus 200. Thesystem control module 201 includes aCPU 201 a, and is connected to theROM 202,RAM 203, close proximitywireless transfer device 204,closeness detection module 205, and device enable/disablemodule 206. - The
RAM 203 stores instructions, data and stacks in process. TheROM 202 stores application programs, drivers, and the like. TheCPU 201 a loads instructions and data stored in theROM 202 onto theRAM 203, and executes required processes. TheCPU 201 a executes, for example, an application program for transferring data such as a data file using the close proximity wireless transfer. - The
CPU 201 a executes a process on the basis of information which pertains to a close proximity state with another communication apparatus which is sent from thecloseness detection module 205, and the operation state of the close proximitywireless transfer device 204 which is sent from the device enable/disablemodule 206. - The close proximity
wireless transfer device 204 executes the close proximity wireless transfer. The close proximity wireless transfer is a wireless communication technique capable of data communication only within a relatively short range such as several centimeters like Near Field Communication (NFC). The close proximity wireless transfer between the close proximitywireless transfer device 204 and another close proximity wireless transfer device is executed as a peer-to-peer communication. The range of communication is, for example, 3 cm. Wireless connection between the close proximitywireless transfer device 204 and another close proximity wireless transfer device can be established only when they are brought close to each other so that their distance falls within a predetermined distance (e.g., 3 cm). The close proximity wireless transfer uses an induced electric field. As the close proximity wireless transfer method, for example, TransferJET can be used. The TransferJET is the close proximity wireless transfer method using UWB, and can realize high-speed data transfer. - The close proximity
wireless transfer device 204 includes anantenna module 207. Theantenna module 207 sends/receives data to/from another communication apparatus by means of signals using an induced electric field. - The
closeness detection module 205 detects the close proximity state between the close proximitywireless transfer device 204 and another close proximity wireless transfer device. That is, thecloseness detection module 205 detects, as the close proximity state, that another close proximity wireless transfer device is brought within the predetermined distance from the close proximitywireless transfer device 204. Thecloseness detection module 205 notifies thesystem control module 201 and device enable/disablemodule 206 of the detection of another close proximity wireless transfer device. - The power consumption of the
closeness detection module 205 in a standby or operation state is smaller than that of the close proximitywireless transfer device 204 in an idle state. A detectable distance within which thecloseness detection module 205 can detect the close proximity state with another close proximity wireless transfer device does not limit a range of communication within which the close proximitywireless transfer device 204 can communicate with another close proximity wireless transfer device. That is, the detectable distance is greater than or equal to the range of communication and the difference between the distances is less than or equal to a predetermined value. If, for example, the range of communication is 3 cm, assume that the detectable distance is 5 cm. By setting the range of communication and the detectable distance to have such relationship, the detectable distance of thecloseness detection module 205 does not limit the range of communication of the close proximitywireless transfer device 204. As thecloseness detection module 205, for example, a device which uses an induced magnetic field is available. The device which uses an induced magnetic field includes FeliCa®, an IC chip, and a non-contact charging device. - The device enable/disable
module 206 controls the close proximitywireless transfer device 204 on the basis of the notification from thecloseness detection module 205. Upon reception of a notification representing the close proximity state from thecloseness detection module 205, the device enable/disablemodule 206 returns the close proximitywireless transfer device 204 from a sleep state, or sets it in a circuit-power-on state. On the other hand, upon reception of a notification representing close proximity state cancellation, the device enable/disablemodule 206 sets the close proximitywireless transfer device 204 in the sleep state or a circuit-power-off state. Note that the sleep state is an operation in a so-called power saving mode in which the close proximitywireless transfer device 204 stands by with a power consumption lower than in a normal operation state. Return from the sleep state indicates that the close proximitywireless transfer device 204 which has operated in the power saving mode resumes the normal operation state. - It is desirable to perform the operation of setting the close proximity
wireless transfer device 204 in the sleep or circuit-power-off state a predetermined time after thecloseness detection module 205 detects the close proximity state cancellation. This makes it possible to avoid a case in which if the user temporarily moves thecommunication apparatus 200 away from another communication apparatus accidentally during data transfer, the close proximitywireless transfer device 204 is set in the sleep or circuit-power-off state, and therefore the transfer fails. -
FIGS. 2A and 2B show a use example when there exist twocommunication apparatuses 200 according to the embodiment. Referring toFIGS. 2A and 2B , thecommunication apparatuses 200 are shown as cellular phones. However, this embodiment is available in not only a cellular phone but also a personal computer or a consumer device such as a TV or audio player. - Cellular phones a1 and b1 respectively perform active operations on cellular phones a2 and b2 which are in the standby state. The operations include transfer of image or music data. Referring to
FIG. 2A , connection by the close proximity wireless transfer is established by bringing cellular phone a1 close to cellular phone a2, and data transfer is executed between cellular phones a1 and a2. Referring toFIG. 2B , connection by the close proximity wireless transfer is disconnected by moving cellular phone b1 away from cellular phone b2 after the data transfer ends. Assume that in the following explanation, expressions “connection (communication) between the cellular phones (communication apparatuses)” and “connection (communication) between the close proximitywireless transfer devices 204” are synonymous, and both mean connection (communication) between the close proximitywireless transfer devices 204 provided for the cellular phones. - Referring to
FIGS. 2A and 2B , close proximitywireless transfer devices 204 provided for cellular phones a2 and b2 on a standby side need to be always in the standby state for receiving signals sent from cellular phones a1 and b1, respectively. Consequently, the close proximitywireless transfer devices 204 consume power even in the standby state in which communication such as data transfer is not actually made. This is a problem for a communication apparatus including a cellular phone which is assumed to be continuously used for a long time. - The
communication apparatus 200 of the embodiment includes, therefore, thecloseness detection module 205 which consumes lower power than the close proximitywireless transfer device 204, as described above. The close proximitywireless transfer device 204 is usually in the sleep (power saving) or circuit-power-off state. When thecloseness detection module 205 detects another close proximity wireless transfer device, the close proximitywireless transfer device 204 returns from the sleep state, or is set in the circuit-power-on state. That is, the close proximitywireless transfer device 204 starts operation by using, as a trigger, the detection of another close proximity wireless transfer device by thecloseness detection module 205 which is always in the operation state. - Referring to
FIG. 2A , the close proximitywireless transfer device 204 of cellular phone a1 returns from the sleep state, or enters the circuit-power-on state by using, as a trigger, the execution of an application program for executing the close proximity wireless transfer between the close proximity wireless transfer devices. When the user brings cellular phone a1 close to cellular phone a2, thecloseness detection module 205 of cellular phone a2 detects that cellular phone a1 is in the close proximity state. Thecloseness detection module 205 of cellular phone a2 notifies the device enable/disablemodule 206 of the close proximity state of cellular phone a1. On the basis of the notification, the device enable/disablemodule 206 of cellular phone a2 returns the close proximitywireless transfer device 204 from the sleep state, or sets it in the circuit-power-on state. With this operation, it is possible to establish connection between the close proximitywireless transfer devices 204 provided for cellular phones a1 and a2, and execute communication such as data transfer. - On the other hand, as shown in
FIG. 2B , when the user moves cellular phone b1 away from cellular phone b2 after data transfer is completed, thecloseness detection module 205 of cellular phone b1 detects the cancellation of the close proximity state of cellular phone b2. Thecloseness detection module 205 of cellular phone b2 also detects the cancellation of the close proximity state of cellular phone b1. Device enable/disablemodules 206 provided for cellular phones b1 and b2 set the close proximitywireless transfer devices 204 in the sleep or circuit-power-off state, respectively. With this operation, each of the close proximitywireless transfer devices 204 is in the sleep or circuit-power-off state until another close proximity wireless transfer device enters the close proximity state next, thereby reducing the power consumption. - Operations when communication is made between the two
communication apparatuses 200 according to this embodiment will now be explained with reference to flowcharts shown inFIGS. 3 and 4 .FIG. 3 shows an operation when the twocommunication apparatuses 200 are brought close to each other, and enters the close proximity state. In the following explanation, assume that the twocommunication apparatuses 200 are shown as a communication apparatus 200 a and a communication apparatus 200 b. - Communication apparatuses 200 a and 200 b are not in the close proximity state, and close proximity
wireless transfer devices 204 provided for communication apparatuses 200 a and 200 b are in the sleep or circuit-power-off state (block S301). Next, in communication apparatus 200 a, in response to the user operation of selecting a menu or file using a button or the like provided for communication apparatus 200 a, aCPU 201 a of communication apparatus 200 a activates an application program for transferring the file or the like by the close proximity wireless transfer to communication apparatus 200 b (block S302). The activated application program executes the close proximity wireless transfer through the close proximitywireless transfer device 204. TheCPU 201 a of communication apparatus 200 a uses the activation of the application program as a trigger to return the close proximitywireless transfer device 204 from the sleep state or set the close proximitywireless transfer device 204 in the power-on state by using an application program or driver (block S303). Communication apparatus 200 a is set to a connection requesting side (Initiator) which requests connection to communication apparatus 200 b, or a connection standby side (Responder) which waits for a connection request from communication apparatus 200 b (block S304). In accordance with the application program form and the like, it is possible to selectively set communication apparatus 200 a in the connection requesting or connection standby side. The close proximitywireless transfer device 204 on the connection requesting side executes a process of sending a connection request signal to the close proximitywireless transfer device 204 on the connection standby side. The close proximitywireless transfer device 204 on the connection standby side performs a process of detecting the connection request signal at, e.g., regular intervals. - Communication apparatuses 200 a and 200 b are brought close to each other, and enter the close proximity state (block S305). A
closeness detection module 205 of communication apparatus 200 a detects the close proximity state with communication apparatus 200 b, and notifies a device enable/disablemodule 206 of communication apparatus 200 a of it. On the other hand, acloseness detection module 205 of communication apparatus 200 b also detects the close proximity state with communication apparatus 200 a, and notifies a device enable/disablemodule 206 of communication apparatus 200 b of it (block S306). - The device enable/disable
module 206 of communication apparatus 200 b returns the close proximitywireless transfer device 204 from the sleep state, or sets the close proximitywireless transfer device 204 in the power-on state (block S307). The close proximitywireless transfer device 204 of communication apparatus 200 b is set to the connection standby side when the close proximitywireless transfer device 204 of communication apparatus 200 a is on the connection requesting side, and is set to the connection requesting side when the close proximitywireless transfer device 204 of communication apparatus 200 a is on the connection standby side (block S308). - In this manner, connection between the close proximity
wireless transfer device 204 of communication apparatus 200 a and that of communication apparatus 200 b is established (block S309). For example, the close proximitywireless transfer device 204 of communication apparatus 200 a on the connection requesting side sends a connection request signal. The close proximitywireless transfer device 204 of communication apparatus 200 b on the connection standby side detects the connection request signal and responds to it, thereby establishing the connection. - Communication apparatus 200 a transfers data to communication apparatus 200 b by the close proximity wireless transfer through the application program (block S310).
- With the above processing, when communication apparatuses 200 a and 200 b are brought close to each other, the close proximity
wireless transfer devices 204 operate by using as a trigger the detection of the close proximity state by thecloseness detection modules 205 provided for thecommunication apparatuses 200, respectively. Since the close proximitywireless transfer devices 204 are in the sleep or power-off state until thecloseness detection modules 205 detect the close proximity state, it is possible to save the power consumption of the close proximitywireless transfer devices 204. -
FIG. 4 shows an operation when the close proximity state is cancelled by moving the two communication apparatuses 200 a and 200 b which have been communicating away from each other. - Communication apparatuses 200 a and 200 b are connected with each other by the close proximity wireless transfer and data is transferred between them (block S401). After the data transfer is completed, communication apparatuses 200 a and 200 b are moved away from each other, and the close proximity state is cancelled (block S402). The connection between the close proximity
wireless transfer device 204 of communication apparatus 200 a and that of communication apparatus 200 b is disconnected (block S403). - Two scenarios are considered for a method of setting the close proximity
wireless transfer devices 204 of communication apparatuses 200 a and 200 b in the sleep or circuit-power-off state. - In the first scenario (block S501), the
closeness detection module 205 of thecommunication apparatus 200 detects the cancellation of the close proximity state. Thecloseness detection module 205 of communication apparatus 200 a detects the cancellation of the close proximity state with communication apparatus 200 b, and notifies the device enable/disablemodule 206 of it. Thecloseness detection module 205 of communication apparatus 200 b also detects the cancellation of the close proximity state with communication apparatus 200 a, and notifies the device enable/disablemodule 206 of it (block S404). The device enable/disablemodule 206 of communication apparatus 200 a sets the close proximitywireless transfer device 204 in the sleep or power-off state. The device enable/disablemodule 206 of communication apparatus 200 b also sets the close proximitywireless transfer device 204 in the sleep or power-off state (block S405). - In the second scenario (block S502), the close proximity
wireless transfer device 204 of thecommunication apparatus 200 detects the disconnection (connection disable). The close proximitywireless transfer device 204 of communication apparatus 200 a sets itself in the sleep or power-off state. The close proximitywireless transfer device 204 of communication apparatus 200 b also sets itself in the sleep or power-off state (block S406). Note that it is possible to determine to use the process in the first or second scenario in accordance with the form of use of thecommunication apparatus 200, an application program executed in thecommunication apparatus 200, or the like. - Either of the processes in the first and second scenarios sets the close proximity
wireless transfer devices 204 of communication apparatuses 200 a and 200 b in the sleep or power-off state (block S407). - There is a case, however, in which communication apparatuses 200 a and 200 b are inadvertently moved away from each other. It is therefore desirable to set the close proximity
wireless transfer devices 204 in the sleep or power-off state a predetermined time after the cancellation of the close proximity state or the disconnection of the communication is detected. - The above processing sets the close proximity
wireless transfer devices 204 in the sleep or power-off state by using, as a trigger, the detection of the cancellation of the close proximity state by each of thecloseness detection modules 205 of thecommunication apparatuses 200 or the disconnection of the connection established between the close proximitywireless transfer devices 204 when communication apparatuses 200 a and 200 b are moved away from each other. This makes it possible to save the power consumption of the close proximitywireless transfer devices 204. - As described above, in this embodiment, a closeness detection module of a communication apparatus can detect that a close proximity wireless transfer device and another close proximity wireless transfer device are in a close proximity state in which their distance falls within a range of communication, and that the close proximity state is cancelled. The power consumption of the operation of the closeness detection module is lower than that of the close proximity wireless transfer device in an idle state, thereby saving the power consumption of the close proximity wireless transfer.
- The various modules of the systems described herein can be implemented as software applications, hardware and/or software modules, or components on one or more computers, such as servers. While the various modules are illustrated separately, they may share some or all of the same underlying logic or code.
- While certain embodiments of the inventions have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. Indeed, the novel methods and systems described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the methods and systems described herein may be made without departing from the spirit of the inventions. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the inventions.
Claims (10)
1. A communication apparatus comprising:
a close proximity wireless transfer device configured to execute a close proximity wireless transfer;
a closeness detection module configured to detect that the close proximity wireless transfer device and an external device are in a close proximity state, wherein power consumed by the closeness detection module is less than power consumed by the close proximity wireless transfer device in an idle state; and
a device controller configured to activate the close proximity wireless transfer device when the closeness detection module detects the close proximity state.
2. The apparatus of claim 1 , wherein the closeness detection module is configured to detect the close proximity state when the external device is within a predetermined distance from the close proximity wireless transfer device.
3. The apparatus of claim 2 , wherein the predetermined distance is greater than or equal to a range of communication of the close proximity wireless transfer device, and a difference between the predetermined distance and the range of communication is shorter than or equal to a predetermined value.
4. The apparatus of claim 1 , wherein the close proximity wireless transfer device is configured to be set either in a state where the close proximity wireless transfer device waits for a connection request from the external device, or in a state where the close proximity wireless transfer device sends a connection request to the external device when the device controller activates the close proximity wireless transfer device.
5. The apparatus of claim 1 , wherein the device controller is configured either to set the close proximity wireless transfer device from a power saving state to an operation state or to turn on the close proximity wireless transfer device when the closeness detection module detects the close proximity state.
6. The apparatus of claim 5 , wherein the device controller is configured either to set the close proximity wireless transfer device in the power saving state or to turn off the close proximity wireless transfer device when the closeness detection module detects cancellation of the close proximity state.
7. The apparatus of claim 6 , wherein the device controller is configured either to set the close proximity wireless transfer device in the power saving state or to turn off the close proximity wireless transfer device a predetermined time after the closeness detection module detects the cancellation of the close proximity state.
8. The apparatus of claim 5 , wherein the close proximity wireless transfer device is configured to change to either a power saving state or a power-off state when disconnection from the external device is detected.
9. The apparatus of claim 3 , wherein the close proximity wireless transfer device is configured to be set either in a state where the close proximity wireless transfer device waits for a connection request from the external device, or in a state where the close proximity wireless transfer device sends a connection request to the external device when the device controller activates the close proximity wireless transfer device.
10. A communication control method of controlling a first close proximity wireless transfer device of a first communication apparatus and a second close proximity wireless transfer device of a second communication apparatus, comprising:
activating a program for executing data transfer using the first close proximity wireless transfer device in response to a predetermined user entry on the first communication apparatus;
either setting the first close proximity wireless transfer device from a power saving state to an operation state or turning on the first close proximity wireless transfer device, after the program is executed;
detecting a close proximity state between the first communication apparatus and the second communication apparatus by a closeness detection module of the second communication apparatus; and
either setting the second close proximity wireless transfer device from a power saving state to an operation state or turning on the second close proximity wireless transfer device when the close proximity state between the first communication apparatus and the second communication apparatus is detected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/338,652 US8351859B2 (en) | 2008-07-24 | 2011-12-28 | Communication apparatus and communication control method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008191024A JP4585582B2 (en) | 2008-07-24 | 2008-07-24 | Communication apparatus and communication control method |
JP2008-191024 | 2008-07-24 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/338,652 Continuation US8351859B2 (en) | 2008-07-24 | 2011-12-28 | Communication apparatus and communication control method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100022188A1 true US20100022188A1 (en) | 2010-01-28 |
Family
ID=41569076
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/499,715 Abandoned US20100022188A1 (en) | 2008-07-24 | 2009-07-08 | Communication apparatus and communication control method |
US13/338,652 Expired - Fee Related US8351859B2 (en) | 2008-07-24 | 2011-12-28 | Communication apparatus and communication control method |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/338,652 Expired - Fee Related US8351859B2 (en) | 2008-07-24 | 2011-12-28 | Communication apparatus and communication control method |
Country Status (2)
Country | Link |
---|---|
US (2) | US20100022188A1 (en) |
JP (1) | JP4585582B2 (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110055606A1 (en) * | 2009-08-25 | 2011-03-03 | Meng-Chyi Wu | Computer system, integrated chip, super io module and control method of the computer system |
US20110083130A1 (en) * | 2009-10-01 | 2011-04-07 | Nokia Corporation | Dynamic execution context management in heterogeneous computing environments |
US20110086632A1 (en) * | 2009-10-13 | 2011-04-14 | Tumey David M | Object range detector and lock down device |
GB2484103A (en) * | 2010-09-29 | 2012-04-04 | Innovision Res & Tech Plc | Initiating a near field communication (NFC) polling sequence when a device is within range |
US20120276850A1 (en) * | 2011-04-27 | 2012-11-01 | Kabushiki Kaisha Toshiba | Electronic apparatus and communication control method |
US20140089710A1 (en) * | 2009-08-25 | 2014-03-27 | Nuvoton Technology Corporation | Integrated circuit, electronic device and operation method thereof |
US20150031302A1 (en) * | 2013-07-25 | 2015-01-29 | Olympus Corporation | Wireless communication terminal with an rfid module, wireless communication system, wireless communication method, and a device storing a program |
EP2840774A3 (en) * | 2013-08-19 | 2015-05-27 | Sony Corporation | Imaging device, control method, and program |
US9105182B2 (en) | 2012-03-08 | 2015-08-11 | Omron Automotive Electronics Co., Ltd. | Communication system and portable machine |
EP2544476A3 (en) * | 2011-07-04 | 2015-11-18 | Sony Computer Entertainment Inc. | Portable communication terminal |
US20160073363A1 (en) * | 2014-09-05 | 2016-03-10 | Canon Kabushiki Kaisha | Communication apparatus capable of performing wireless communication via antenna and control method thereof |
US9313380B2 (en) | 2013-08-19 | 2016-04-12 | Sony Corporation | Imaging device |
US10477091B2 (en) | 2013-08-19 | 2019-11-12 | Sony Corporation | Imaging unit and installation device to attach to another device |
US20210191493A1 (en) * | 2018-09-17 | 2021-06-24 | Advanced Micro Devices, Inc. | Transition into and out of a partially-off power state |
US20210410203A1 (en) * | 2018-11-09 | 2021-12-30 | Sony Interactive Entertainment Inc. | Communication device, electronic apparatus, and wireless connection method |
WO2023055139A1 (en) * | 2021-09-30 | 2023-04-06 | 삼성전자주식회사 | Electronic apparatus and control method thereof |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5304513B2 (en) * | 2009-07-24 | 2013-10-02 | ソニー株式会社 | Communication device, communication method discrimination method, and program |
JP5857550B2 (en) * | 2011-09-05 | 2016-02-10 | 株式会社リコー | Electronic equipment and control program |
JP6262947B2 (en) | 2013-06-25 | 2018-01-17 | キヤノン株式会社 | Communication device, control method, and program |
US9794886B2 (en) * | 2014-09-08 | 2017-10-17 | Microsoft Technology Licensing, Llc | Wireless radios managed based on proximity |
JP6152242B2 (en) * | 2015-04-06 | 2017-06-21 | レノボ・シンガポール・プライベート・リミテッド | Method for ensuring information security of portable electronic device, portable electronic device and function expansion device |
CN105678553A (en) | 2015-08-05 | 2016-06-15 | 腾讯科技(深圳)有限公司 | Method, device and system for processing order information |
JP2016220261A (en) * | 2016-09-28 | 2016-12-22 | 株式会社ニコン | Electronic apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040203365A1 (en) * | 2002-06-13 | 2004-10-14 | Tetsuya Yamamoto | Radio communication with an intended device |
US20070216530A1 (en) * | 2004-03-29 | 2007-09-20 | Pioneer Corporation | Radio Communication System, Fixed Information Device, and Mobile Terminal Device |
US7603145B2 (en) * | 2004-05-10 | 2009-10-13 | Research In Motion Limited | System and method for facilitating short-range wireless communications between a mobile wireless device and an auxiliary system |
US7778675B1 (en) * | 2005-01-14 | 2010-08-17 | American Megatrends, Inc. | Remotely accessing a computing device in a low-power state |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08191853A (en) * | 1995-01-13 | 1996-07-30 | Anzen Kotsu Shiken Kenkyu Center | Guiding apparatus by recognition of individual |
JP2000071987A (en) * | 1998-08-28 | 2000-03-07 | Yokogawa Denshikiki Co Ltd | Railway safety device by data carrier system |
JP2001032584A (en) | 1999-07-23 | 2001-02-06 | Denso Corp | Locking and unlocking controller making use of non- contact ic card |
JP2001243431A (en) | 2000-02-28 | 2001-09-07 | Matsushita Electric Ind Co Ltd | Non-contact reader-writer |
JP2002009660A (en) * | 2000-06-19 | 2002-01-11 | Yokogawa Denshikiki Co Ltd | Data carrier system |
JP2002135194A (en) | 2000-10-20 | 2002-05-10 | Oki Electric Ind Co Ltd | Method for sensing approaching communicable range and null region sensing circuit |
JP2002271252A (en) | 2001-03-09 | 2002-09-20 | Denso Corp | Short-distance radio communication system, fixed-side communication equipment and portable radio telephone set |
DE10334765A1 (en) | 2003-07-30 | 2005-02-24 | Giesecke & Devrient Gmbh | Communication device for establishing a data connection between intelligent devices |
JP4577019B2 (en) * | 2004-03-04 | 2010-11-10 | ソニー株式会社 | Wireless communication system, wireless communication apparatus, wireless communication method, and computer program |
JP2005311918A (en) | 2004-04-23 | 2005-11-04 | Sharp Corp | Portable terminal device and communication system using it |
JP4007982B2 (en) * | 2004-07-30 | 2007-11-14 | 株式会社ソニー・コンピュータエンタテインメント | Communication terminal device, method for establishing communication, and game device |
JP2006163819A (en) | 2004-12-07 | 2006-06-22 | Toshiba Corp | Contactless ic card reader/writer device and its control method, data communication method |
JP2006186894A (en) * | 2004-12-28 | 2006-07-13 | Canon Inc | Image input apparatus, control method and control program |
JP5023673B2 (en) * | 2006-11-24 | 2012-09-12 | 富士通株式会社 | Information access system, read / write device, and active contactless information storage device |
-
2008
- 2008-07-24 JP JP2008191024A patent/JP4585582B2/en not_active Expired - Fee Related
-
2009
- 2009-07-08 US US12/499,715 patent/US20100022188A1/en not_active Abandoned
-
2011
- 2011-12-28 US US13/338,652 patent/US8351859B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040203365A1 (en) * | 2002-06-13 | 2004-10-14 | Tetsuya Yamamoto | Radio communication with an intended device |
US20070216530A1 (en) * | 2004-03-29 | 2007-09-20 | Pioneer Corporation | Radio Communication System, Fixed Information Device, and Mobile Terminal Device |
US7603145B2 (en) * | 2004-05-10 | 2009-10-13 | Research In Motion Limited | System and method for facilitating short-range wireless communications between a mobile wireless device and an auxiliary system |
US7778675B1 (en) * | 2005-01-14 | 2010-08-17 | American Megatrends, Inc. | Remotely accessing a computing device in a low-power state |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140089710A1 (en) * | 2009-08-25 | 2014-03-27 | Nuvoton Technology Corporation | Integrated circuit, electronic device and operation method thereof |
US20110055606A1 (en) * | 2009-08-25 | 2011-03-03 | Meng-Chyi Wu | Computer system, integrated chip, super io module and control method of the computer system |
US9696779B2 (en) * | 2009-08-25 | 2017-07-04 | Nuvoton Technology Corporation | Integrated circuit, electronic device and operation method thereof |
US20110083130A1 (en) * | 2009-10-01 | 2011-04-07 | Nokia Corporation | Dynamic execution context management in heterogeneous computing environments |
US20110086632A1 (en) * | 2009-10-13 | 2011-04-14 | Tumey David M | Object range detector and lock down device |
US8693949B2 (en) | 2010-09-29 | 2014-04-08 | Broadcom Corporation | Near-field RF communicators having a low-energy pre-polling process |
GB2484103A (en) * | 2010-09-29 | 2012-04-04 | Innovision Res & Tech Plc | Initiating a near field communication (NFC) polling sequence when a device is within range |
GB2484103B (en) * | 2010-09-29 | 2018-01-03 | Broadcom Europe Ltd | Near field RF communicators |
US20120276850A1 (en) * | 2011-04-27 | 2012-11-01 | Kabushiki Kaisha Toshiba | Electronic apparatus and communication control method |
EP2544476A3 (en) * | 2011-07-04 | 2015-11-18 | Sony Computer Entertainment Inc. | Portable communication terminal |
US9105182B2 (en) | 2012-03-08 | 2015-08-11 | Omron Automotive Electronics Co., Ltd. | Communication system and portable machine |
US20150031302A1 (en) * | 2013-07-25 | 2015-01-29 | Olympus Corporation | Wireless communication terminal with an rfid module, wireless communication system, wireless communication method, and a device storing a program |
US9197987B2 (en) * | 2013-07-25 | 2015-11-24 | Olympus Corporation | Wireless communication terminal with an RFID module, wireless communication system, wireless communication method, and a device storing a program |
US10477091B2 (en) | 2013-08-19 | 2019-11-12 | Sony Corporation | Imaging unit and installation device to attach to another device |
US9313380B2 (en) | 2013-08-19 | 2016-04-12 | Sony Corporation | Imaging device |
US9723196B2 (en) | 2013-08-19 | 2017-08-01 | Sony Corporation | Imaging device and associated methodology for establishing a Wi-Fi connection with another device |
EP2840774A3 (en) * | 2013-08-19 | 2015-05-27 | Sony Corporation | Imaging device, control method, and program |
US10674058B2 (en) | 2013-08-19 | 2020-06-02 | Sony Corporation | Imaging unit and installation device to attach to another device |
US9807545B2 (en) * | 2014-09-05 | 2017-10-31 | Canon Kabushiki Kaisha | Communication apparatus controlling close proximity wireless communication unit, control method thereof and storage medium |
US20160073363A1 (en) * | 2014-09-05 | 2016-03-10 | Canon Kabushiki Kaisha | Communication apparatus capable of performing wireless communication via antenna and control method thereof |
US20210191493A1 (en) * | 2018-09-17 | 2021-06-24 | Advanced Micro Devices, Inc. | Transition into and out of a partially-off power state |
US20210410203A1 (en) * | 2018-11-09 | 2021-12-30 | Sony Interactive Entertainment Inc. | Communication device, electronic apparatus, and wireless connection method |
US11510255B2 (en) * | 2018-11-09 | 2022-11-22 | Sony Interactive Entertainment Inc. | Communication device, electronic apparatus, and wireless connection method |
WO2023055139A1 (en) * | 2021-09-30 | 2023-04-06 | 삼성전자주식회사 | Electronic apparatus and control method thereof |
Also Published As
Publication number | Publication date |
---|---|
JP4585582B2 (en) | 2010-11-24 |
JP2010028753A (en) | 2010-02-04 |
US8351859B2 (en) | 2013-01-08 |
US20120100807A1 (en) | 2012-04-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8351859B2 (en) | Communication apparatus and communication control method | |
US10154459B2 (en) | Communication apparatus, control method for communication apparatus, communication system, and program | |
US8786136B2 (en) | Electronic apparatus and communication control method | |
US7643798B2 (en) | Passive NFC activation of short distance wireless communication | |
US9408017B2 (en) | Communication apparatus, control method, and storage medium | |
US8320831B2 (en) | Electronic device and communication control method | |
US20100022187A1 (en) | Electronic device and communication control method | |
KR101265234B1 (en) | Nfc device | |
US8838032B2 (en) | Communication terminal and communication control method | |
EP3986035B1 (en) | Electronic device for reducing power consumption and operating method thereof | |
US20230179028A1 (en) | Method for detecting foreign object and electronic device | |
JP5010718B2 (en) | Communication apparatus and communication control method | |
JP5398800B2 (en) | Electronic device and communication control method | |
US20150095533A1 (en) | Electronic device having two wireless communication components | |
US20230007875A1 (en) | Electronic device and wireless power transmission/reception method in electronic device | |
US20230402878A1 (en) | Method for controlling wireless charging mode and device therefor | |
US11546014B2 (en) | Electronic device and method for supporting heterogeneous communication techniques sharing frequency band | |
US20230262415A1 (en) | Electronic device and operation method using a geo-fence | |
JP6368107B2 (en) | Communication device, control method, and program | |
US20240015209A1 (en) | Electronic device for performing wi-fi direct group communication, and method therefor | |
US20230299813A1 (en) | Wireless charging method and electronic device supporting same | |
US20230396343A1 (en) | Method and electronic device for regulating radiated power | |
JP2012080447A (en) | Electronic device, power source control program, and power source control method | |
US20230007836A1 (en) | Wireless communication device including radio frequency integrated circuit and method of controlling the same | |
US20210376668A1 (en) | Electronic device and method for controlling wireless charging in electronic device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KABUSHIKI KAISHA TOSHIBA, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NAKAGAWA, HIDEYUKI;REEL/FRAME:022931/0766 Effective date: 20090612 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |