WO2014061145A1 - Dispositif vidéo et procédé d'alimentation électrique - Google Patents

Dispositif vidéo et procédé d'alimentation électrique Download PDF

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Publication number
WO2014061145A1
WO2014061145A1 PCT/JP2012/077028 JP2012077028W WO2014061145A1 WO 2014061145 A1 WO2014061145 A1 WO 2014061145A1 JP 2012077028 W JP2012077028 W JP 2012077028W WO 2014061145 A1 WO2014061145 A1 WO 2014061145A1
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WO
WIPO (PCT)
Prior art keywords
remaining
battery
power
electricity
power supply
Prior art date
Application number
PCT/JP2012/077028
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English (en)
Japanese (ja)
Inventor
長谷川　実
甲　展明
Original Assignee
日立マクセル株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日立マクセル株式会社 filed Critical 日立マクセル株式会社
Priority to PCT/JP2012/077028 priority Critical patent/WO2014061145A1/fr
Publication of WO2014061145A1 publication Critical patent/WO2014061145A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging

Definitions

  • the technical field relates to the supply of power to equipment.
  • Patent Document 1 Provides a wireless communication device, a wireless communication system, a wireless communication method, and a program capable of reliably supplying power to a plurality of terminals in a wireless communication network”
  • Patent Document 1 [0005] As a means for solving the problem, “a wireless communication unit that communicates with another device connected via a wireless communication network, a power status acquisition unit that acquires the power status of the device, A power supply unit that wirelessly supplies power to another device in response to a power supply request from another device connected via the wireless communication network when the power condition satisfies a predetermined condition. '' (Patent Document 1 [0006]) and the like.
  • Patent Document 1 only considers supplying power from the “own device” to the “other device”, which is inconvenient for the user.
  • the present application includes a plurality of means for solving the above-described problems.
  • a battery for storing electricity It has a power supply circuit that outputs stored electricity or inputs electricity to the battery, and a communication unit that communicates with other devices, and the communication unit can send messages requesting power to other devices
  • the communication unit receives a message requesting power from another device, the electricity stored in the battery is transmitted to the other device via the power supply circuit.
  • Block diagram showing an example of a transmission system The figure which shows an example of the designation
  • Block diagram showing an example of the multifunction device 4 Configuration diagram showing an example of connecting a source device and a multifunction device
  • the figure which shows an example of the electric power supply sequence of the structure which connected the source device and the multifunctional device Configuration diagram showing an example of connecting a sink device and a multifunction device
  • the user designates power supply in an arbitrary direction and transmits power in that direction, or communicates information about power between devices, and determines the power supply direction based on the result.
  • An example will be described in which power transmission is determined.
  • expressions such as “power supply” and “supply power” mean supplying electricity.
  • FIG. 1 is a block diagram illustrating an example of a transmission system using HDMI transmission, in which a source device 1 is connected to a sink device 2 via a cable 3 and a video signal is supplied from the source device 1 to the sink device 2
  • this is a system capable of mutually supplying power between the source device 1 and the sink device 2.
  • the source device 1 is, for example, a smartphone, a portable audio device, or a tablet PC.
  • the sink device 1 is, for example, a television, a projector, or an in-vehicle display.
  • the source device 1 performs a reproduction unit 101 that reproduces a video signal, a video transmission unit 102 that transmits the video signal, an EDID reading unit 103 that reads EDID (Extended Display Identification Data) from the sink device 2, and CEC (Consumer Electronics Control) communication.
  • CEC communication unit 104 source control unit 105 that controls each function unit of source device 1, power supply circuit unit 106 that supplies power to each function unit, and DDC + 5V supply unit 107 that supplies power to a DDC (Display Data Channel) + 5V line
  • an HPD detector 108 that detects an HPD (Hot Plug Detect) signal from the sink device 2.
  • the AC adapter 109 and the battery 111 are connected to the power supply circuit 106, and any of these supplies power to the power supply circuit 106.
  • the battery remaining amount confirmation unit 110 confirms the remaining amount of the battery 111.
  • the sink device 2 includes a display unit 201 that converts a video signal into a video, a video reception unit 202 that receives the video signal from the source device 1, an EDID storage unit 203 that stores EDID information read by the source device 1, and a CEC communication unit that performs CEC communication. 204, a sink control unit 205 that appropriately controls each function unit of the sink device 2, a power supply circuit unit 207 that appropriately supplies power to each function unit, and an HPD output unit 208 that outputs an HPD signal.
  • the AC adapter 209 and the battery 211 are connected to the power supply circuit 206, and any of these supplies power to the power supply circuit 206.
  • the battery remaining amount confirmation unit 210 confirms the remaining amount of the battery 211.
  • the cable 3 is a cable for connecting the source device 1 and the sink device 2 and is, for example, an HDMI cable.
  • a video signal transmission line 301, a DDC line 302, a CEC communication line 303, a DDC + 5V line 304, and an HPD line 305 necessary for explaining the present invention are extracted and described.
  • Power is supplied from the source device to the sink device by a method such as supplying power using the DDC + 5V line 304 or the like.
  • the power supply from the sink device to the source device is performed by a method of supplying power using the HPD line 305 or the like.
  • both devices connected as shown in FIG. 1 can be driven by a battery
  • power is supplied from the sink device 2 to the source device 1 or from the source device 1 to the sink device 2.
  • Enable As a result, it is possible to lengthen the operation time of the system configured by both connected devices.
  • Which direction of power supply is performed is determined by the following power supply mode example.
  • the first mode is the supply direction selection mode. This is a mode in which the user determines the power supply direction. It is assumed that this mode is used when it is desired to preferentially increase the remaining battery level of one of the devices, or when one of the devices is connected to a power source through an AC adapter.
  • the mode can be selected by key operation from either one of the connected devices.
  • An example of the mode designation method is shown in FIG.
  • the entire menu of either one of the devices is displayed, and the HDMI terminal setting is selected from the entire menu screen (screen 501).
  • a power supply mode selection menu is selected on the shifted screen 502.
  • the supply direction selection mode is selected on the shifted screen 503.
  • the cursor may be displayed in the previously selected mode.
  • the transitioned screen 504 it is selected whether to supply power from the currently operated device to the connected device or whether to supply power from the connected device to the currently operated device.
  • the power supply direction is reconfirmed on the transitioned screen 505. When the reconfirmation is completed, power supply in the selected direction is started.
  • FIG. 3 is a sequence diagram showing an example of processing when power supply from the source to the sink is selected.
  • DDC + 5V line power is supplied from the source device 1 to the sink device 2.
  • the sink device 2 changes the HPD line from the low level (hereinafter simply referred to as “L”) to the high level (hereinafter simply referred to as “H”), and confirms connection to the source device 1. return.
  • the source device 1 reads the EDID from the sink device 2 and completes the connection confirmation.
  • the user determines the power supply direction by using either device by the method shown in FIG.
  • a case where the operation shown in 71 is performed using the source device 1 as shown in FIG. 2, that is, a case where power supply from the source device 1 to the sink device 2 is selected will be described.
  • notification is made from the source device 1 on the operating side to the sink device 2 that there is power supply capability.
  • the sink device 2 sends a response indicating a power supply request to the source device 1.
  • power supply from the source device 1 to the sink device 2 is started.
  • the sink device 2 transmits a message requesting power supply stop to the source device 1.
  • the source device 1 transmits a message indicating that the power supply is stopped to the sink device 2, and the power supply is stopped.
  • the remaining battery level of the source device 1 on the power supply side becomes equal to or less than a predetermined value, or when the user selects the power supply stop from the source device 1 side, a message indicating the stop of power supply from the source device 1 is displayed. The sink device 2 is notified and the power supply is terminated.
  • the example in which power is supplied from the source device 1 to the sink device 2 has been described.
  • messages and requests sent from the source device 1 to the sink device 2 can also be sent from the sink device 2, and similarly messages and requests sent from the sink device 2 to the source device 1 can also be sent. Transmission from the source device 2 to the sink device 2 is possible.
  • the second mode is a remaining amount division mode in which the power supply direction is determined so that the remaining battery amounts of two devices to be connected are equal. It is assumed as a use example that this mode is used when, for example, a device having a sufficient remaining battery capacity is used to a device having a small remaining battery capacity, depending on the remaining power.
  • a method such as selecting the remaining amount division mode at 503 in FIG.
  • FIG. 4 is a sequence diagram showing an example of processing in the remaining amount division mode.
  • the connection confirmation from 701 to 703 is the same as in FIG.
  • the source device 1 that has performed the mode selection operation requests the sink device 2 to report the remaining battery amount.
  • the source device 1 and the sink device 2 check the remaining battery levels, and in 802, the sink device 2 transmits the information to the source device 1.
  • the information on the remaining battery level is detected by the remaining battery level checking units 110 and 210 of both devices and used for determining the feeding direction. Examples of information on the remaining battery level used here include information on the ratio to 100% full charge, information on physical quantities obtained in units such as A ⁇ Hour, and the like.
  • the power supply direction is determined such that power is supplied to the battery with the remaining amount from the largest to the smallest.
  • the determination result is transmitted from the source device 1 to the sink device 2.
  • the sink device 2 responds to this, and in 805, power supply from the sink device 2 to the source device 1 is started.
  • FIG. 4 illustrates a case where the sink device 2 has more battery power than the source device 1 and power is supplied from the sink device 2 to the source device 1.
  • the determination result is notified or the determination result is displayed. Instead of the notification, a power supply request message is transmitted from the source device 1 to the sink device 2.
  • the result is transmitted from the source device 1 to the sink device 2 in 803.
  • a message requesting power supply from the sink device 2 to the source device 1 is transmitted at 804, and power supply from the source device 1 to the sink device 2 is started at 805 in response to the message.
  • steps 806 to 809 the information on the remaining battery level is exchanged every certain time (for example, every 1 minute).
  • the power supply is terminated when the remaining battery amounts become equal or the difference between the remaining battery amounts is within a predetermined value as a result of the information exchange.
  • this mode when this mode is selected, it is confirmed that one device is connected to the power supply through an AC adapter, etc., or one device is connected to the power supply through an AC adapter or the like during power feeding. If this is detected, it may be automatically set so that power is automatically supplied from the side connected to the power source to the side not connected. In this case, power supply is terminated when both batteries are fully charged.
  • the third mode is the longest duration mode in which the power supply direction is determined so that the remaining operation times of two connected devices are equal (or the difference is as small as possible).
  • this mode is used when it is desired to operate the system as long as possible.
  • An example of the mode designation method is to select the longest duration mode in 503 in FIG.
  • FIG. 5 is a sequence diagram showing an example of processing in the longest duration mode.
  • the connection confirmation from 701 to 703 is the same as in FIG.
  • the source device 1 in which the mode selection operation is performed requests the sink device 2 to report the remaining operation time.
  • the source device 1 and the sink device 2 check the remaining battery levels and calculate the remaining operating time.
  • the sink device 2 transmits the information to the source device 1.
  • the remaining operating time can be calculated from the remaining battery level detected by the remaining battery level checking units 110 and 210 of both devices, the power consumption per unit time of the source device 1 and the sink device 2, and the like.
  • the power supply direction is determined such that the power is supplied from the longer remaining operation time to the shorter remaining operation time.
  • the source device 1 transmits the determination result to the sink device 2.
  • the sink device 2 responds to this at 904, power supply is started (905).
  • FIG. 5 illustrates a case where the remaining operating time of the sink device 2 is longer than the remaining operating time of the source device 1 and power is supplied from the sink device 2 to the source device 1.
  • a power supply request message is transmitted from the source device 1 to the sink device 2.
  • the result is transmitted from the source device 1 to the sink device 2 in 903.
  • a message requesting power supply from the sink device 2 to the source device 1 is transmitted at 904, and power supply from the source device 1 to the sink device 2 is started at 905 in response to the message.
  • the remaining power supply time is calculated from the change in the remaining operation time and the elapsed time from the start of power supply, so that the remaining operation times of the two connected devices are equal (or the difference is as small as possible).
  • the remaining power supply time calculated in 97 elapses (98)
  • 909 a message for stopping power supply is transmitted from the source device 1 to the sink device 2, and in 910, the sink device 2 supplies power according to the message. To stop.
  • this mode when this mode is selected, it is confirmed that one device is connected to the power supply through an AC adapter, etc., or one device is connected to the power supply through an AC adapter or the like during power feeding. If this is detected, it may be automatically set so that power is automatically supplied from the side connected to the power source to the side not connected. In this case, power supply is terminated when both batteries are fully charged.
  • the remaining operating time of each device is calculated by each device, but may be performed by one device.
  • the source device 1 receives only information necessary for calculating the operation time such as the remaining battery capacity and the power consumption of the sink device 2 from the sink device 2 instead of the remaining operation time.
  • the remaining operating time of the device 2 may be calculated. In this way, even if the sink device 2 does not have a function for calculating the remaining operation time, it is possible to supply power based on the remaining operation time.
  • the fourth mode is an automatic mode that recommends a mode that seems appropriate in consideration of information such as the remaining battery level and operation history between two connected devices.
  • the remaining battery level will automatically be determined by determining that the device with the lower battery level often needs charging. Recommended or selected.
  • the difference in the remaining battery level is within a predetermined value, it is determined that there are many cases in which the operating side needs charging, and the device on the operating side is Recommend or choose to supply power.
  • a mode with the largest number of past selections is recommended or selected.
  • An example of the mode designation method is a method of selecting the automatic mode in 503 in FIG.
  • each connected device automatically performs functions such as display functions and video transmission functions other than functions such as power transmission, connection confirmation, and information exchange necessary for power reception and power supply. It may be set to stop and save power, and charging efficiency may be increased by suppressing power consumption during charging.
  • FIG. 6 shows an example of a configuration diagram of the multi-function device 4 of the present embodiment.
  • the composite function device 4 includes a source function circuit 402, a sink function circuit 403, and a switching control unit 404 for switching between them.
  • the configuration of the source function circuit 402 is the same as that of the source device 1 in FIG. 1, and the sink function circuit 403 is the same as that of the sink device 2 in FIG.
  • the switching control unit 404 connects the external input / output terminal 401 to the source function circuit. By connecting to 402, the source function is realized.
  • the switching control unit 404 is connected to the cable 3
  • the sink function is realized by connecting the input / output terminal 401 to the sink function circuit 403.
  • the multifunction device 4 uses the function as the source or supplies power to another source device as the sink. You can choose what to do.
  • Example 2-1 Example of connection between source device and multifunction device>
  • the source device 11 has both a source function and a function to which power is supplied from the sink device, and has both a source function and a sink function. Both the sink device and the source device receive power.
  • a configuration in which the multifunction device 4 having a function that can be supplied is connected via the cable 3 will be described.
  • the power supply that can be performed between the devices in this combination is only the power supply from the multifunction device 4 to the source device 11, when the user confirms that the devices in this combination are connected via the cable, It is possible to determine that the intention to supply power from the multi-function device 4 to the source device 11 is clear, and to start power supply based on the information.
  • an OSD screen that asks the user whether or not to start power supply may be displayed.
  • FIG. 8 is a sequence diagram showing an example of processing of this embodiment.
  • the multifunction device 4 first confirms whether or not power is supplied to the DDC + 5V line. If it is confirmed, it is confirmed that the connection partner is the source. Therefore, the switching function unit 404 connects the external input / output terminal 401 connected to the cable 3 to the sink function circuit 403 so as to have the sink function. .
  • the multifunction device 4 confirms the + DDC5V power supply (1012), and the switching control unit 404 connects to the cable 3 to have a sink function.
  • the output terminal 401 is connected to the sink function circuit 403 (1013).
  • the composite function device 4 serving as the sink maintains the HPD line power supply to the source device 11. Thereafter, in step 1004, reading of EDID, which is transmission of a function as a sink, is performed. At this time, the multi-function device 4 may transmit the power supply capability to the source device 1 by describing in the EDID that power can be supplied to the source device to which the user is connected.
  • power request information is transmitted from the source device 1 to the multifunction device 4 at 1005.
  • This power request transmission is performed by the method described in Patent Document 1, for example.
  • the multi-function device 4 that has received the power request information by any method returns a response to it in 1006. If the power receiving condition is prepared by this information exchange, the multifunction device 4 starts supplying power to the source device 1 in 1007.
  • the condition requested by the power request information is the same as the power supplied from the HPD line at this time, the power supply condition from the HPD line is maintained as it is, and the power requested by the power request information is HPD at this time. If it is different from the power supplied from the line, it will be changed to the required condition.
  • the OSD screen is displayed on the display screen provided in the multifunction device 4 to ask the user whether or not to start power supply, and after the user permits the power supply start by key operation or the like. You may start electric power supply. If the power supply is terminated due to reasons such as the battery charging of the source device 1 on the power receiving side being completed or the remaining battery level of the multifunction device 4 being below a predetermined level, the power cannot be supplied any more. A power supply stop is requested from the other device, and the power supply is stopped (1008, 1009).
  • the multi-function device 4 has a sink function circuit 403 because it needs to have a function as a sink, and is used in the sequence of FIG. 8 in the sink function circuit 403.
  • the part includes an EDID storage unit 203, a sink control unit 205, an HPD output unit 208, and a function for receiving power request information.
  • the video receiving unit 202 is not particularly necessary to realize the power supply function according to the present invention. For this reason, parts and circuits unnecessary for power supply may be omitted.
  • the multifunction device 4 may include a function necessary for functioning as a sink device as a video device in addition to a function necessary for power supply.
  • the user confirms that the device of this combination is connected via the cable. It is possible to determine that the intention to supply power from the functional device 4 to the sink device 7 has been clarified, and to start power supply based on the information.
  • an OSD screen that asks the user whether or not to start power supply may be displayed.
  • FIG. 10 is a sequence diagram showing an example of processing in the present embodiment.
  • the composite function device 4 first checks whether power is supplied to the DDC + 5V line (1111). Power is supplied from the functional device 4 to the source device 1 using the HPD line. Here again, when it is confirmed that power is not supplied to the DDC + 5V line, it is determined that the connected device is a device having a sink function, and the multifunction device 4 connects the switch control unit 404 to the cable 3 so as to have a source function.
  • the external input / output terminal 401 is connected to the source function circuit 402 (1113).
  • the multi-function device 4 that is the source supplies power to the DDC + 5V line in 1102, and in 1103, the sink device 7 returns a connection confirmation by setting the HPD line to a high voltage (L ⁇ H). Thereafter, at 1104, EDID is read.
  • power request information is transmitted from the sink device 7 to the multifunction device 4 in 1105.
  • This power request transmission is performed by the method described in Patent Document 1, for example.
  • the multi-function device 4 that has received the power request information by any method returns a response to it in 1106. If the power receiving condition is established by this information exchange, the multifunction device 4 starts supplying power to the sink device 7 in 1107.
  • the power supply condition from the DDC + 5V line is maintained as it is. If the power requested by the power request information is different from the power supplied from the DDC + 5V line at this time, the requested condition is changed.
  • the OSD screen is displayed on the display screen provided in the multifunction device 4 to ask the user whether or not to start power supply, and the user permits start of power supply by key operation or the like. After that, power supply may be started. If the power supply is terminated due to reasons such as the battery charging of the sink device 7 on the power receiving side being completed or the remaining battery level of the multi-function device 4 being less than a predetermined value, the power cannot be supplied any more. A power supply stop is requested from the other device, and the power supply is stopped (1008, 1009).
  • the multi-function device 4 has a source function circuit 402 because it needs to have a function as a source, and is used for the sequence of FIG. 10 in the source function circuit 402.
  • the parts are an EDID reading unit 103, a source control unit 105, a DDC + 5V supply unit 107, an HPD detection unit 108, and a function for receiving power request information.
  • the CEC communication unit 104 transmits and receives power information.
  • the playback unit 101 and the video receiving unit 102 are particularly useful for realizing the power supply function according to the present invention. I don't need it. For this reason, parts and circuits unnecessary for power supply may be omitted.
  • the HDMI specification stipulates that a display device that is essential as a source device that is a video display device is provided. Therefore, the multifunction device 4 may include a function necessary for functioning as a source device as a video device in addition to a function necessary for power supply.
  • power can be supplied in either direction from the multi-function device 41 to the multi-function device 42, or from the multi-function device 42 to the multi-function device 41. Therefore, power can be supplied in each mode shown in the first embodiment.
  • FIG. 12 shows an example of a sequence diagram in the case of the supply direction selection mode similar to FIG. 3 as an example of the present embodiment.
  • the side connected to the cable referred to as the multi-function device 41 in this embodiment
  • the multi-function device 41 first confirms the power supply of the DDC + 5V line (1212). If power supply is not confirmed, power is supplied to the HPD line in 1201, and then the power supply of the DDC + 5V line is confirmed again (1213). If the power supply is still not confirmed, the multifunction device 41 connects the external input / output terminal 401 connected to the cable 3 to the source function circuit 402 so as to have the source function (1214), and the DDC + 5V line at 1202 To power.
  • the switching control unit 404 connects the external input / output terminal 401 connected to the cable 3 to the sink function circuit 403 so as to have the sink function (1217). The following sequence is the same as in FIG.
  • ⁇ Other methods may be used as a method of assigning two multifunction devices to either sink or source. For example, when a multifunction device has a cable connection detection function, the device connected first becomes the source when it is detected that no device is connected to the opposite side of the cable. An example is a method in which a device connected later becomes a sink when it is detected that a source device is connected to the opposite side of the cable.
  • one of the devices connected in this way is a multi-function device that has the function of receiving and supplying power to both the source function / sink function and the sink device / source device, the partner device connected to the multi-function device Power can be supplied from either the source or the sink.
  • the combination power supply by the source device, the sink device, or the multifunction device is described as shown in FIGS. 1, 7, 9 and 11, but the power supply is not limited to this.
  • FIG. 13 is an example in which power is supplied by connecting to the multifunction device 4 and the wireless transmission system 1302 driven by the battery 1301.
  • the supply direction selection mode as shown in the second embodiment, It is also possible to select the remaining amount division mode, the longest duration mode, and the like so as to receive power in the necessary direction.
  • the wireless transmission system 1302 needs to have a battery remaining amount confirmation unit having a function of confirming the remaining amount of the battery, and further to have a function of transmitting the information to the multifunction device 4 There is.
  • various types of devices can supply and receive power according to the power state of each device and the user's will, improving usability for the user.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

L'invention concerne une configuration pour un dispositif vidéo et un procédé d'alimentation électrique du dispositif vidéo, le dispositif vidéo permettant la transmission et la réception de l'alimentation entre des dispositifs connectés dans une large gamme de modes dans un système d'alimentation électrique au moyen de lignes de transmission vidéo. Les informations relatives à l'alimentation sont communiquées entre les dispositifs, le sens d'application de l'alimentation est déterminé sur la base des résultats de la communication, et l'alimentation est transmise. En variante, un utilisateur émet une instruction d'alimentation électrique dans un sens souhaité et l'alimentation est transmise dans ce sens. Lorsque les deux dispositifs connectés sont des sources ou des collecteurs, au moins l'un des dispositifs se voit attribuer la fonction double de transmission ou de réception d'alimentation comme source et de transmission ou de réception d'alimentation comme collecteur.
PCT/JP2012/077028 2012-10-19 2012-10-19 Dispositif vidéo et procédé d'alimentation électrique WO2014061145A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107409242A (zh) * 2015-03-23 2017-11-28 Lg 电子株式会社 使用hdmi发送/接收电力的方法和设备
KR20180005156A (ko) * 2015-06-04 2018-01-15 엘지전자 주식회사 Hdmi를 사용하여 전력을 송수신하기 위한 방법 및 그 장치
CN114026522A (zh) * 2019-07-08 2022-02-08 夏普Nec显示器解决方案株式会社 电子设备及电子设备的控制方法

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