WO2017082448A1 - Dispositif et procédé pour l'exploiter - Google Patents

Dispositif et procédé pour l'exploiter Download PDF

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Publication number
WO2017082448A1
WO2017082448A1 PCT/KR2015/012766 KR2015012766W WO2017082448A1 WO 2017082448 A1 WO2017082448 A1 WO 2017082448A1 KR 2015012766 W KR2015012766 W KR 2015012766W WO 2017082448 A1 WO2017082448 A1 WO 2017082448A1
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WIPO (PCT)
Prior art keywords
usb port
cable
usb
mode
port
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Application number
PCT/KR2015/012766
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English (en)
Korean (ko)
Inventor
김봉주
Original Assignee
엘지전자 주식회사
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Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Publication of WO2017082448A1 publication Critical patent/WO2017082448A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure

Definitions

  • the present invention relates to a device and a method of operating the same, and a device capable of being connected to an external device through a USB port and a method of operating the same.
  • a device such as a tablet or a smart phone is provided with a cable port for connection with other external devices due to the size limitation.
  • the cable port may be connected to various external devices, for example, a charging device for supplying power to the device, and a gender for converting a cable connection standard.
  • USB Type C is a new USB connector type developed for micro devices such as tablets or smartphones. It can be applied not only to USB 3.1 with 10Gbps bandwidth but also to existing USB 3.0 and USB 2.0. It has the advantage of being able to connect without distinction, supporting faster data transmission speed, and enabling simultaneous power supply and data transmission.
  • FIG. 1A shows an operation when the 3A charging device 20 is connected to the device 10 through the USB Type C connector.
  • the charging device 20 when the cable of the 3A charging device 20 is connected to the USB Type C connector of the device 10, the charging device 20 operates as a source capable of supplying power, and the 3000 mA Current flows into the USB Type-C connector. In response, the device 10 operates as a sink that can receive power, and receives power from the charging device 20 to charge the battery of the device 10. At this time, the device 10 determines whether the battery can be charged based on the voltage applied to the internal resistance of 5.1K.
  • FIG. 1B shows the operation when the cable of the OTG gender 30 is connected to the device 10 through the USB Type C connector.
  • the device 10 when the OTG gender 30 is connected to the USB Type C connector of the device 10, the device 10 operates as a source. Then, an output current, for example, 500 mA, conforming to the standard of the device is passed to the OTG gender 30.
  • the OTG gender 30 is recognized as a sink and is powered from the device 10.
  • the 3A charging device when determining whether the connected external device is a source or a sink based on the voltage applied to the internal resistance of the device 10, if the charging device connected to the device 10 is in an unplug state without power supply, the 3A charging device There is a problem that is recognized as the same as the OTG gender.
  • the 3A charging device becomes a source again and the device 10 operates as a sink.
  • the charger is again recognized as a sink just like an OTG gender.
  • the standby current of the device 10 increases as this process is repeated indefinitely.
  • an object of the present invention is to provide a device and a method of operating the same, which can be clearly distinguished from an unplug state of a charging device and a gender without being misrecognized when connected to an external device.
  • Another object of the present invention is to provide a device and a method of operating the same, which eliminates or minimizes the occurrence of an interrupt that is infinitely recognizing a sink and then a source when the charging device is connected in an unplug state.
  • the present invention provides a device and a method of operating the same, in which a standby current does not increase even when an unplug charging device is connected.
  • an interface unit formed on one side of the device body including an USB port to which an external device is connected;
  • a detection unit detecting that an external device is connected or disconnected from the USB port;
  • the output current of the USB port is initialized to a defined current level, and when an external device is connected to the USB port, the operation mode of the device body corresponding to the connection is determined based on the voltage applied to the USB port, It includes a control unit for controlling the output current of the USB port according to the operation mode.
  • the controller resets the output current of the USB port to a defined current level.
  • control unit characterized in that for initializing the current level of the output current applied to a specific pin of the USB port to 1500mA or 3000mA.
  • control unit the USB port is a USB C-type port
  • external device is characterized in that connected to or disconnected from the USB C-type port via a USB C-type cable.
  • the sensing unit characterized in that for detecting the connection or disconnection of the external device based on the voltage applied to a specific pin of the USB port.
  • the controller if the voltage applied to a specific pin of the USB port is less than a reference value, the controller operates in a source mode in which the device main body supplies power to the connected external device, and the voltage applied to a specific pin of the USB port. If the reference value is greater than or equal to, the device main body is controlled to operate in a sink mode supplied with power from the connected external device.
  • the controller when the device main body operates in the source mode, the controller converts the output current of the USB port from the defined current level to a default USB current, and then supplies power to the connected external device.
  • the device main body When the device main body operates in the sink mode, it is controlled to charge the battery provided in the device main body by receiving power from the connected external device.
  • the controller when the device main body operates in the source mode, switches the source mode to the sink mode when a voltage applied to a specific pin of the USB port is out of a reference voltage range, and specifies the USB port. When the voltage across the pin is within the reference voltage range, the output current of the USB port is converted into a default USB current.
  • the reference voltage range is characterized in that it comprises a range of 0.25v to 1.5v and 2.6v.
  • control unit if the source mode is switched to the sink mode as the voltage applied to a specific pin of the USB port is out of the reference voltage range, the charging device without power supply to the external device connected to the USB port It is characterized by the recognition.
  • the controller switches the sink mode to a sleep mode if the external device connected to the USB port is recognized as a charging device without power supply.
  • a plurality of resistors may be connected to specific pins of the USB port, and the control unit may connect a first resistor corresponding to a default USB current to a specific pin of the USB port in the source mode to supply VBUS power. Outputs and disconnects the second resistor corresponding to the defined current level to a specific pin of the USB port when the connected external device is disconnected from the USB port.
  • the controller if an external device is connected to the USB port, the controller maintains the standby mode for a predetermined time and checks whether the output current of the USB port is set to the defined current level during the standby mode. It is done.
  • the controller when the external device is connected to the USB port, when the power of the device body is turned off (off), when the off (off) state is turned on (on), Re-initialize the output current of the USB port to a defined current level.
  • the display device may further include a display configured to display information related to an operation mode of the device main body when an external device is connected to the USB port.
  • the displayed information disappears when the external device is disconnected from the USB port. It is characterized by.
  • the operating method of the device including a USB port that can connect an external device to one side of the main body, initializing the output current of the USB port to a defined current level Making a step; Determining an operation mode of a device main body corresponding to the connection based on a voltage applied to the USB port when it is detected that an external device is connected to the USB port; Controlling the output current of the USB port to correspond to the determined operation mode; And when the connected external device is disconnected from the USB port, resetting the output current of the USB port to a defined current level.
  • the device and its operation method according to an embodiment of the present invention even when a 3A charging device in an unplugged state is connected to a port for connecting an external device, it is not mistaken as a gender. Thus, even when an unplugged 3A charger is connected to the device, an interrupt that infinitely repeats the source mode and the sink mode does not occur or is minimized, and no standby current is wasted.
  • 1A is a diagram for describing an operation when connecting a charging device to a device in general.
  • FIG. 1B is a diagram for describing an operation of a device when connecting an OTG gender to a device.
  • FIG. 2A is a block diagram illustrating a device related to the present invention.
  • 2B and 2C are conceptual views of one example of the device related to the present invention, viewed from different directions.
  • FIG. 3A is a diagram for describing an interrupt that may occur when a charging device without a power supply is generally connected to a device.
  • FIG. 3B is a circuit diagram related to FIG. 3A.
  • FIG. 4 is a representative flowchart illustrating an operation implemented in a device related to the present invention.
  • 6A and 6B are flowcharts illustrating in more detail an operation implemented in a device related to the present invention.
  • FIG. 7 is a graph showing the waveform of the voltage measured when the 3A charger is connected to the device related to the present invention.
  • 8A and 8B are diagrams illustrating a result of measuring a voltage when a 3A charging device without a power supply is conventionally connected to a device.
  • FIG. 9 is a graph showing the waveform of the voltage when the 3A charging device without power supply is connected according to the operation of the device related to the present invention.
  • FIG. 10 is a flowchart illustrating a method of operating according to another embodiment of a device related to the present invention.
  • Devices described herein include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants, portable multimedia players, navigation, slate PCs, A tablet PC, an ultrabook, a wearable device (eg, a smartwatch, a glass glass, a head mounted display) may be included. .
  • a wearable device eg, a smartwatch, a glass glass, a head mounted display
  • fixed terminals such as digital TVs, desktop computers, digital signage, etc., except when applicable only to devices. .
  • the device may be a smart home appliance having a communication function.
  • Smart home appliances are, for example, electronic devices such as televisions, digital video disk (DVD) players, audio, refrigerators, air conditioners, cleaners, ovens, microwave ovens, washing machines, air purifiers, set-top boxes, TVs. It may include at least one of boxes, game consoles, electronic dictionaries, electronic keys, camcorders, or electronic picture frames.
  • the device may be a variety of medical devices (eg, magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), computed tomography (CT), imaging device, ultrasound, etc.), navigation device, GPS Global positioning system receivers, event data recorders (EDRs), flight data recorders (FDRs), automotive infotainment devices, marine electronics (e.g. marine navigation systems and gyro compasses), avionics , A security device, a vehicle head unit, an industrial or household robot, an automatic teller's machine (ATM) of a financial institution, or a point of sales (POS) of a store.
  • MRA magnetic resonance angiography
  • MRI magnetic resonance imaging
  • CT computed tomography
  • imaging device e.g., ultrasonics
  • GPS Global positioning system receivers e.g., GPS Global positioning system receivers, event data recorders (EDRs), flight data recorders (FDRs), automotive infotainment devices, marine electronics (e.g. marine navigation systems and g
  • FIG. 2A is a block diagram illustrating a device related to the present invention
  • FIGS. 2B and 2C are conceptual views of one example of the device related to the present invention, viewed from different directions.
  • the device 100 includes a wireless communication unit 110, an input unit 120, a detection unit 140, an output unit 150, an interface unit 160, a memory 170, a controller 180, and a power supply unit 190. And the like.
  • the components shown in FIG. 2A are not essential to implementing a device, so a device described herein may have more or fewer components than the components listed above.
  • the wireless communication unit 110 of the components wireless communication between the device 100 and the wireless communication system, between the device 100 and another device 100, or between the device 100 and the external server It may include one or more modules that enable.
  • the wireless communication unit 110 may include one or more modules for connecting the device 100 to one or more networks.
  • the wireless communication unit 110 may include at least one of the broadcast receiving module 111, the mobile communication module 112, the wireless internet module 113, the short range communication module 114, and the location information module 115. .
  • the input unit 120 may include a camera 121 or an image input unit for inputting an image signal, a microphone 122 for inputting an audio signal, an audio input unit, or a user input unit 123 for receiving information from a user. , Touch keys, mechanical keys, and the like.
  • the voice data or the image data collected by the input unit 120 may be analyzed and processed as a control command of the user.
  • the sensing unit 140 may include one or more sensors for sensing at least one of information within the device, surrounding environment information surrounding the device, and user information.
  • the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, an illumination sensor, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity.
  • Optical sensors e.g. cameras 121), microphones (see 122), battery gauges, environmental sensors (e.g.
  • the device disclosed herein may utilize a combination of information sensed by at least two or more of these sensors.
  • the output unit 150 is for generating an output related to sight, hearing, or tactile sense, and includes at least one of the display unit 151, the audio output unit 152, the hap tip module 153, and the light output unit 154. can do.
  • the display unit 151 forms a layer structure with or is integrally formed with the touch sensor, thereby implementing a touch screen.
  • the touch screen may function as a user input unit 123 that provides an input interface between the device 100 and the user, and may also provide an output interface between the device 100 and the user.
  • the interface unit 160 serves as a path to various types of external devices connected to the device 100.
  • the interface unit 160 connects a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, and an identification module. It may include at least one of a port, an audio input / output (I / O) port, a video input / output (I / O) port, and an earphone port.
  • I / O audio input / output
  • I / O video input / output
  • earphone port an earphone port
  • the memory 170 stores data supporting various functions of the device 100.
  • the memory 170 may store a plurality of application programs or applications that are driven by the device 100, data for operating the device 100, and instructions. At least some of these applications may be downloaded from an external server via wireless communication. In addition, at least some of these application programs may exist on the device 100 from the time of shipment for basic functions (for example, call forwarding, call forwarding, message reception, and call forwarding) of the device 100.
  • the application program may be stored in the memory 170, installed on the device 100, and driven by the controller 180 to perform an operation (or function) of the device.
  • the controller 180 In addition to the operation related to the application program, the controller 180 typically controls the overall operation of the device 100.
  • the controller 180 may provide or process information or a function appropriate to a user by processing signals, data, information, and the like, which are input or output through the above-described components, or by driving an application program stored in the memory 170.
  • controller 180 may control at least some of the components described with reference to FIG. 2A in order to drive an application program stored in the memory 170. In addition, the controller 180 may operate by combining at least two or more of the components included in the device 100 to drive the application program.
  • the power supply unit 190 receives external power, in particular, external power supplied from an external device connected through the above-described USB port of the interface unit 160, or an internal power supplied to the device 100. Supply power to each component included in).
  • the power supply unit 190 includes a battery, which may be a built-in battery or a replaceable battery.
  • At least some of the components may operate in cooperation with each other to implement an operation, control, or control method of the device according to various embodiments described below.
  • the operation, control, or control method of the device may be implemented on the device by driving at least one application program stored in the memory 170.
  • the disclosed device 100 includes a terminal body in the form of a bar.
  • the present invention is not limited thereto, and the present invention can be applied to various structures such as a watch type, a clip type, a glass type, or a folder type, a flip type, a slide type, a swing type, a swivel type, and two or more bodies which are coupled to be movable relative. .
  • a description of a particular type of device may generally apply to other types of devices.
  • the terminal body may be understood as a concept of referring to the device 100 as at least one aggregate.
  • the device 100 includes a case (eg, a frame, a housing, a cover, etc.) forming an external appearance. As shown, the device 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the internal space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.
  • a case eg, a frame, a housing, a cover, etc.
  • the device 100 may include a front case 101 and a rear case 102.
  • Various electronic components are disposed in the internal space formed by the combination of the front case 101 and the rear case 102.
  • At least one middle case may be additionally disposed between the front case 101 and the rear case 102.
  • the display unit 151 may be disposed in front of the terminal body to output information. As shown, the window 151a of the display unit 151 may be mounted to the front case 101 to form a front surface of the terminal body together with the front case 101.
  • an electronic component may be mounted on the rear case 102.
  • Electronic components attachable to the rear case 102 include a removable battery, an identification module, a memory card, and the like.
  • the rear cover 102 may be detachably coupled to the rear case 102 to cover the mounted electronic component. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic components mounted on the rear case 102 are exposed to the outside.
  • the rear cover 103 when the rear cover 103 is coupled to the rear case 102, a portion of the side surface of the rear case 102 may be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 103 during the coupling. On the other hand, the rear cover 103 may be provided with an opening for exposing the camera 121b or the sound output unit 152b to the outside.
  • the cases 101, 102, and 103 may be formed by injecting a synthetic resin, or may be formed of a metal, for example, stainless steel (STS), aluminum (Al), titanium (Ti), or the like.
  • STS stainless steel
  • Al aluminum
  • Ti titanium
  • the device 100 may be configured such that one case may provide the internal space, unlike the above example in which a plurality of cases provide an internal space for accommodating various electronic components.
  • a device 100 of a unibody in which a synthetic resin or a metal extends from side to back may be implemented.
  • the device 100 may include a waterproof part (not shown) to prevent water from penetrating into the terminal body.
  • the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102 or between the rear case 102 and the rear cover 103, and a combination thereof. It may include a waterproof member for sealing the inner space.
  • the device 100 includes a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, an optical output unit 154, and first and second cameras. 121a and 121b, first and second manipulation units 123a and 123b, a microphone 122, and an interface unit 160 may be provided.
  • the display unit 151, the first sound output unit 152a, the proximity sensor 141, the illuminance sensor 142, and the light output unit may be disposed on the front surface of the terminal body.
  • the first camera 121a and the first operation unit 123a are disposed, and the second operation unit 123b, the microphone 122, and the interface unit 160 are disposed on the side of the terminal body.
  • the device 100 in which the second sound output unit 152b and the second camera 121b are disposed on the rear surface will be described as an example.
  • first manipulation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side of the terminal body instead of the rear surface of the terminal body.
  • the display unit 151 displays (outputs) information processed by the device 100.
  • the display unit 151 may display execution screen information of an application program driven in the device 100, or UI (User Interface) or Graphic User Interface (GUI) information according to the execution screen information.
  • UI User Interface
  • GUI Graphic User Interface
  • the display unit 151 may include a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible display). display, a 3D display, or an e-ink display.
  • LCD liquid crystal display
  • TFT LCD thin film transistor-liquid crystal display
  • OLED organic light-emitting diode
  • flexible display flexible display
  • display a 3D display, or an e-ink display.
  • two or more display units 151 may exist according to the implementation form of the device 100.
  • a plurality of display units may be spaced apart from or integrally disposed on one surface of the device 100, or may be disposed on different surfaces.
  • the display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method.
  • the touch sensor may sense the touch, and the controller 180 may generate a control command corresponding to the touch based on the touch sensor.
  • the content input by the touch method may be letters or numbers or menu items that can be indicated or designated in various modes.
  • the touch sensor is formed of a film having a touch pattern and disposed between the window 151a and the display (not shown) on the rear surface of the window 151a or directly patterned on the rear surface of the window 151a. May be Alternatively, the touch sensor may be integrally formed with the display. For example, the touch sensor may be disposed on a substrate of the display or provided in the display.
  • the display unit 151 may form a touch screen together with the touch sensor.
  • the touch screen may function as the user input unit 123 (see FIG. 1A).
  • the touch screen may replace at least some functions of the first manipulation unit 123a.
  • the first sound output unit 152a may be implemented as a receiver for transmitting a call sound to the user's ear, and the second sound output unit 152b may be a loud speaker for outputting various alarm sounds or multimedia reproduction sounds. It can be implemented in the form of).
  • a sound hole for emitting sound generated from the first sound output unit 152a may be formed in the window 151a of the display unit 151.
  • the present invention is not limited thereto, and the sound may be configured to be emitted along an assembly gap between the structures (for example, a gap between the window 151a and the front case 101).
  • an appearance of a hole formed independently for sound output may be invisible or hidden so that the appearance of the device 100 may be simplified.
  • the light output unit 154 is configured to output light for notifying when an event occurs. Examples of the event may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.
  • the controller 180 may control the light output unit 154 to end the light output.
  • the first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in a shooting mode or a video call mode.
  • the processed image frame may be displayed on the display unit 151 and stored in the memory 170.
  • the first and second manipulation units 123a and 123b may be collectively referred to as a manipulating portion as an example of the user input unit 123 manipulated to receive a command for controlling the operation of the device 100. .
  • the first and second manipulation units 123a and 123b may be adopted in any manner as long as the user is tactile manner such as touch, push, scroll, and the like while the user is tactile.
  • the first and second manipulation units 123a and 123b may be employed in such a manner that the first and second manipulation units 123a and 123b are operated without a tactile feeling by the user through proximity touch, hovering touch, or the like.
  • the first operation unit 123a is illustrated as being a touch key, but the present invention is not limited thereto.
  • the first manipulation unit 123a may be a mechanical key or a combination of a touch key and a push key.
  • the contents input by the first and second manipulation units 123a and 123b may be variously set.
  • the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, etc.
  • the second operation unit 123b is output from the first or second sound output units 152a and 152b.
  • the user may receive a command such as adjusting the volume of the sound and switching to the touch recognition mode of the display unit 151.
  • a rear input unit (not shown) may be provided on the rear surface of the terminal body.
  • the rear input unit is manipulated to receive a command for controlling the operation of the device 100, and the input content may be variously set. For example, commands such as power on / off, start, end, scroll, etc., control of the volume of sound output from the first and second sound output units 152a and 152b, and the touch recognition mode of the display unit 151. Commands such as switching can be received.
  • the rear input unit may be implemented in a form capable of input by touch input, push input, or a combination thereof.
  • the rear input unit may be disposed to overlap the front display unit 151 in the thickness direction of the terminal body.
  • the rear input unit may be disposed at the rear upper end of the terminal body so that the user can easily manipulate the index body when the user grips the terminal body with one hand.
  • the present invention is not necessarily limited thereto, and the position of the rear input unit may be changed.
  • the rear input unit when the rear input unit is provided at the rear of the terminal body, a new type user interface using the same may be implemented.
  • the touch screen or the rear input unit described above replaces at least some functions of the first operation unit 123a provided in the front of the terminal body, the first operation unit 123a is not disposed on the front of the terminal body.
  • the display unit 151 may be configured with a larger screen.
  • the device 100 may be provided with a fingerprint recognition sensor for recognizing a user's fingerprint, and the controller 180 may use fingerprint information detected through the fingerprint recognition sensor as an authentication means.
  • the fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.
  • the microphone 122 is configured to receive a user's voice, other sounds, and the like.
  • the microphone 122 may be provided at a plurality of locations and configured to receive stereo sound.
  • the interface unit 160 serves as a path for connecting the device 100 to an external device.
  • the interface unit 160 may be connected to another device (eg, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), or a Bluetooth port (Bluetooth). Port), a wireless LAN port, or the like, or at least one of a power supply terminal for supplying power to the device 100.
  • the interface unit 160 may be implemented in the form of a socket for receiving an external card such as a subscriber identification module (SIM) or a user identity module (UIM), a memory card for storing information.
  • SIM subscriber identification module
  • UIM user identity module
  • the second camera 121b may be disposed on the rear surface of the terminal body. In this case, the second camera 121b has a photographing direction substantially opposite to that of the first camera 121a.
  • the second camera 121b may include a plurality of lenses arranged along at least one line.
  • the plurality of lenses may be arranged in a matrix format.
  • Such a camera may be referred to as an "array camera.”
  • the second camera 121b is configured as an array camera, images may be photographed in various ways using a plurality of lenses, and images of better quality may be obtained.
  • the flash 124 may be disposed adjacent to the second camera 121b.
  • the flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.
  • the second sound output unit 152b may be additionally disposed on the terminal body.
  • the second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used to implement a speakerphone mode during a call.
  • the terminal body may be provided with at least one antenna for wireless communication.
  • the antenna may be built in the terminal body or formed in the case.
  • an antenna that forms part of the broadcast receiving module 111 (refer to FIG. 2A) may be configured to be pulled out from the terminal body.
  • the antenna may be formed in a film type and attached to the inner side of the rear cover 103, or may be configured such that a case including a conductive material functions as an antenna.
  • the terminal body is provided with a power supply unit 190 (see FIG. 2A) for supplying power to the device 100.
  • the power supply unit 190 may include a battery 191 embedded in the terminal body or detachably configured from the outside of the terminal body.
  • the battery 191 may be configured to receive power through a power cable connected to the interface unit 160.
  • the battery 191 may be configured to enable wireless charging through a wireless charger.
  • the wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).
  • the rear cover 103 is coupled to the rear case 102 to cover the battery 191 to limit the detachment of the battery 191 and to protect the battery 191 from external shock and foreign matter.
  • the rear cover 103 may be detachably coupled to the rear case 102.
  • An accessory may be added to the device 100 to protect the appearance or to assist or expand the function of the device 100.
  • An example of such an accessory may be a cover or pouch that covers or accommodates at least one side of the device 100.
  • the cover or pouch may be configured to interoperate with the display unit 151 to expand the function of the device 100.
  • Another example of the accessory may be a touch pen for assisting or extending a touch input to a touch screen.
  • the present invention does not misunderstand this as a gender even when the device 100 is connected to an unplug charging device, and is implemented to eliminate or minimize the occurrence of an interrupt that repeats the sink mode and the source mode infinitely. It became.
  • 3A is a diagram for describing in detail an interrupt that may occur when a 3A charging device without a power supply is connected to a conventional smartphone 10.
  • 3B is a circuit diagram related to FIG. 3A.
  • a TA (Travel Adapter) 20 is used as a 3A charging device for charging the battery of the smartphone 10.
  • the TA 20 is a wireless type without a cable, in order to charge the battery of the smart phone 10 using the TA 20, the smart phone 10 and the 3A charging device 20 using the USB cable. Was connected.
  • the 3A TA 200 connected through the USB cable is in an unplug state (for example, both a power off state in a multi-tap plug state or a case where a plug is made in an unstable power supply).
  • the smartphone 100 operates as a source capable of supplying power, and misrecognizes the charging device 20 without power supply as an OTG gender.
  • the smartphone 10 operates in a source mode to apply power to the charging device 20 without a power supply. Then, the charging device 20 without power supply is in a source mode, and the smartphone 10 recognizes the charging device 20 without power supply as a charger.
  • the smartphone 10 when the charging device 20 without power supply is normally recognized as a charger, the smartphone 10 is in a sink mode so that the power supply unit 20 no longer supplies power to the charging device 20 without power supply. do. Then, the charging device 20 again becomes a source mode (source mode) to repeat the above process indefinitely.
  • the smartphone 10 since power is not applied to the Rp resistor of the charging device without the power supply on the left side of the drawing, the smartphone 10 receives a sink powered from the charging device without the power supply. Recognized as a device, it becomes a source device that supplies power. Accordingly, VBUS power is applied to the charging device without the power supply. Since VBUS power is applied, power is supplied to the Rp resistor.
  • the charging device without a power supply is normally recognized as a source device, and the smartphone 10 becomes a sink device, and VBUS is turned off. Then, since the power is not applied to the Rp resistor again, the charging device is recognized as a sink device and the smartphone 10 continues to repeat the process of becoming a source device.
  • the smartphone 10 when the charging device without the power supply is connected to the smartphone, the smartphone 10 does not normally enter the sleep mode, thereby increasing the standby current.
  • the standby current of the smart phone 10 in the normal state is 4 ⁇ 5mA
  • the standby current may increase to about 20mA.
  • an object of the present invention is to realize a device that does not generate an interrupt that repeats the source mode and the sink mode without recognizing a charger in an unplug state as a charger rather than a gender.
  • the interface unit 160 of the device 100 includes a USB port to which a cable of an external device is connected.
  • the USB C-type is a new USB connector type, and the upper and lower sides are symmetrical, and thus can be connected without distinction between upper and lower sides.
  • the device 100 when the device 100 supports the USB C-type, the device 100 essentially supports a CC (Configuration Channel) Controller IC. Accordingly, when the cable is connected to the USB C-type port, the device 100 may detect the type of the cable connected based on the voltage applied to the CC1 / CC2 pin in the port. Specifically, the controller 180 of the device 100 calculates or confirms the voltage applied to the CC1 / CC2 pins of the USB C-type port to estimate what kind of external device or accessory is connected. can do. However, in order to solve the expected interruption when connecting the 3A TA without the power supply described above, only the type of the connected external device is estimated, and only the operation mode of the corresponding device 100 is determined.
  • CC Configuration Channel
  • an OTG gender and a 3A Travel Adapter are described as an example.
  • the 3A TA is connected to a USB C-type port via a cable and, in normal cases, can supply a power of 10K resistance, or 3000mA, with the voltage applied to the internal resistance.
  • an output current applied to a USB port of the device 100 is initialized to a predetermined current level (S10).
  • the current source of a specific pin of the 'USB C-type port' is preset to a predetermined current level.
  • the predefined current level may be an output current value at which the Rp resistance of the device satisfies 22K, that is, 1500 mA or 3000 mA.
  • the controller 180 detects this and detects a specific pin (CC1 / CC2 pin) of the USB port. Can be initialized to a predefined current level, i.e. 1500 mA or 3000 mA.
  • the sensing unit 140 of the device 100 may detect connection or disconnection of the cable based on a voltage applied to the CC1 / CC2 pin of the USB port.
  • the CC (Configuration Channel) Controller IC provided in the USB C-type port can detect a change in voltage applied to a specific pin (CC pin) of the USB port. When a change in voltage is detected, the sensing unit 140 recognizes that a cable is connected to the USB port and transfers it to the control unit 180.
  • the controller 180 may select one of a source mode and a sink mode as an operation mode of the device 100 based on a voltage applied to a specific pin of the USB port. That is, in the present invention, only the operation mode of the device 100 is determined without determining the type of the connected external device based on the voltage applied to the CC1 / CC2 pin of the USB port.
  • the source mode refers to an operation mode in which the device main body can supply power to an external device connected to a cable.
  • the sink mode refers to an operation mode in which the device main body can receive power from an external device connected to a cable.
  • the controller 180 operates the device body in the source mode when the voltage applied to the specific pin of the USB port, that is, the CC pin is less than the reference value.
  • the reference value corresponds to the voltage range when power is not applied to the internal resistance Rp of the external device connected through the cable.
  • the reference value may correspond to the voltage range applied to the internal resistance Rd of the device when a sink device (eg, an OTG gender) is connected to the USB port.
  • the condition for the device 100 to enter the source mode can be largely divided into two.
  • the OTG gender is connected to the USB port of the device 100 and the device 100 recognizes it normally.
  • Table 1 is a case where the output current applied to the CC pin of the USB port of the device 100 is set to the default USB current, the voltage range applied to the CC pin is recognized to be within about 0.25v to 1.5v. .
  • Table 2 shows that the output current applied to the CC pin of the USB port of the device 100 is set to 1500 mA (ie, 180 uA ⁇ 8), and the voltage range applied to the CC pin is recognized to be within about 0.45 v to 1.5 v. .
  • Table 3 is a case where the output current applied to the CC pin of the USB port of the device 100 is set to 3000mA (that is, 330uA ⁇ 8), the voltage range applied to the CC pin is recognized within about 0.85v ⁇ 2.45v You can see that.
  • the TA internal resistance is 56K (Defaut USB)
  • the voltage levels applied at 22K (1500mA) and 10K (3000mA) are shown in Table 4 below.
  • the output current applied to the CC pin of the USB port of the device 100 is initially 1500 mA or more so as not to be recognized as an OTG gender. It was set to 3000mA and flowed to TA internal resistance.
  • the connected external device can be correctly recognized as the charging device instead of the sink device.
  • the controller 180 when the voltage applied to a specific pin of the USB port, that is, the CC pin, is out of the reference value, the controller 180 operates the device body in the sink mode.
  • the reference value corresponds to the voltage range when power is not applied to the internal resistance Rp of the external device connected through the cable. Or it corresponds to the voltage range across the internal resistance Rd of the device when a sink (eg OTG gender) is connected to the USB port.
  • the controller 180 controls the output current of the USB port to correspond to the determined operation mode (S40).
  • the controller 180 converts the output current of the USB port from the defined current level to the default USB current.
  • the default USB current 80uA ⁇ 20%
  • the converted default USB current 80uA ⁇ 20%
  • the controller 180 switches the source mode to the sink mode when the voltage applied to a specific pin (CC pin) of the USB port is out of the reference voltage range.
  • the reference voltage range is a voltage range in which the device recognizes an external device connected to the USB port as an OTG gender, and includes about 0.25v to 1.5v range and 2.6v.
  • the controller 180 detects that the voltage applied to a specific pin (CC pin) of the USB port is outside the range of about 0.25v to 1.5v and 2.6v in the source mode, the charging device without a power supply to the USB port is turned on. Recognize that you are connected. Accordingly, once the device is switched to the sink mode and power is not supplied from the charging device, the device does not change back to the source mode as long as the device recognizes the charging device. As a result, as described with reference to FIGS. 3A and 3B, an interrupt in which the device repeats the source mode and the sink mode indefinitely does not occur.
  • the controller 180 receives power from an external device connected to a cable and controls the output current of the USB port so that the battery provided with the device can be charged. Can be.
  • the controller 180 resets the output current applied to the USB port to have a defined current level (S50). S60). Thus, even if the 3A TA without power supply is connected again later, it can be correctly recognized as a non-gender charging device.
  • the output current applied to the USB port is converted to the default USB current (80uA ⁇ 20%) range. Therefore, when the cable is disconnected from the USB port, it is initialized again to 1500mA (180uA ⁇ 8%) or 3000mA (330uA ⁇ 8%), which can be mistaken for OTG gender even if a 3A TA is not connected afterwards. I never do that.
  • FIGS. 6A and 6B are flowcharts for describing an operation implemented in a device related to the present invention in more detail.
  • FIG. 5 is a flowchart showing the overall operation implemented in the device related to the present invention.
  • the current level of a current source applied to a specific pin (CC pin) of a USB port of the device 100 is initialized. Specifically, when the source mode of the device 100 supports the default USB current, the current level of the source mode is set to 1500 mA or 3000 mA. On the other hand, if the source mode does not support the default USB current, it will initialize to a current level appropriate for the current source supported by the device.
  • the operation mode of the device is determined based on the voltage applied to a specific pin (CC pin). Specifically, when the voltage across the specific pin (CC pin) is below the reference value (eg, when no rectified voltage of 5A is provided), the device operates in the source mode. On the other hand, when the voltage across a specific pin (CC pin) is out of the reference value, it can enter the sink mode or accessory mode.
  • source mode if the voltage across a specific pin (CC pin) of the USB port is outside the reference voltage range recognized by the OTG gender connection, the device will not be able to Recognizes as no charging device. Accordingly, the source mode is released and the device is recognized as a sink device.
  • the controller 180 may switch the sink mode to the sleep mode to minimize waste of standby current.
  • the controller 180 may switch off the charging function by the external power input through the USB port. Then, as power is supplied to the charging device connected to the USB port of the device 100 through a cable, when a voltage applied to a specific pin (CC pin) of the USB port is changed, by the external power input through the USB port The charging function can be turned on. In addition, the controller 180 may determine whether to enter the above-described sleep mode, whether the charging function is switched on / off by an external power source, or the like at a predetermined cycle.
  • the current mode in source mode is converted to the default USB current and the corresponding VBUS Apply power to the connected external device.
  • the cable When the cable is disconnected from the USB port, it resets the current level of the current source across the specific pin (CC pin) of the USB port of the device 100 to a defined value, for example 500 mA or 3000 mA, so that the cable When connected, the possibility of interrupts is eliminated.
  • a defined value for example 500 mA or 3000 mA
  • 6A is a flow chart illustrating in more detail a process of initializing a current source to a defined current level before a cable is connected to a USB port of the device.
  • the device 100 initializes the current source to a defined current level at the time of product release or at the time when the cable is disconnected from the USB port (S610).
  • the device determines whether the device supports the default USB current in the source mode (S620), and if it supports, initializes the current level in the source mode to 1500 / 3000mA (S630). Meanwhile, if the default USB current is not supported, initialization is performed to correspond to the current level of the source mode supported by the corresponding device (S640).
  • an example of how to determine whether the device supports the default USB current in the source mode is as follows. First, connect the device in source mode, and then type-C to Type-C cable with another device in sync mode to look at the log for verification. Next, you can check the source mode current by checking the log on another connected device to see if the device supports the default USB current in source mode.
  • 6B is a flowchart illustrating a process of controlling an output current applied to a USB port in more detail when the device operates in source mode.
  • S650 When it is detected that the cable is connected to the USB port (S650), it is determined whether the device operates in the source mode based on the voltage applied to a specific pin (CC pin) of the USB port (S660).
  • the device When the device operates in the source mode, as described above, there may be a case in which a sink device such as an OTG gender is connected and a charger device without a power supply is connected. In either case, initially the current level initialized in Figure 6A, i.e. 1500 / 3000mA or the source mode current supported by the device, is applied to a specific pin (CC pin) of the USB port.
  • a sink device such as an OTG gender
  • a charger device without a power supply is connected.
  • the current level initialized in Figure 6A i.e. 1500 / 3000mA or the source mode current supported by the device, is applied to a specific pin (CC pin) of the USB port.
  • the device operates in source mode initially, either with an OTG gender connected or with a non-powered charging device, but by passing a current level of 1500/3000 mA to the connected external device, The charging device can be easily distinguished.
  • the current level applied to a specific pin (CC pin) of the USB port is switched to the default USB current so as to correspond to the connection of the sink device (S670), and accordingly, the external device connected through the cable, For example, VBUS power is applied to the OTG gender (S680).
  • the cable is disconnected, by performing the process of initializing the current level of the source mode shown in Figure 6a, it is prepared to perform the same process thereafter.
  • FIG. 7 is a graph showing waveforms of voltages measured when a 3A charger is normally connected to a device related to the present invention.
  • VBUS power is applied from the 3A charging device toward the device to generate a rated voltage.
  • the voltage applied to the CC pin of the USB port of the device is naturally outside the recognition range of the OTG gender. That is, when the 3A TA is connected, the internal resistance Rp of the TA is applied to the device (approximately 1.65v) corresponding to the 10K resistance value, which is outside the recognition range of the OTG gender within the range of 0.25v to 1.5v.
  • 8A and 8B are diagrams illustrating a measurement result of a voltage when a device and a 3A charging device without a power supply are connected in the related art.
  • FIG. 8A shows that when the 3A TA is connected to the 'smartphone' without power, the interrupts (interrupts in the sink mode and the source mode) are repeated at intervals of about 100 to 200 ms. At this time, the voltage applied to the CC pin of the USB port of the device swings within the range of 0.25v to 1.5v, which is an OTG gender recognition range.
  • FIG. 8B shows that when a 3A TA without power is connected to a 'laptop computer' (eg, Chomebook Pixel2 TM ), interrupts (interrupts in sink mode and source mode) are repeated at intervals of about 100m and 6s.
  • a 'laptop computer' eg, Chomebook Pixel2 TM
  • the difference in the time that the interrupt occurs is because the notebook computer has a larger capacity of the capacitor of the VBUS line than the smartphone, it takes longer to charge.
  • the voltage across the CC pin swings within the 0.25v to 1.5v range of the OTG gender.
  • the device's USB port has CC1 and CC2 pins.
  • initially the current level of the initialized source mode flows into the 3A charging device without power supply.
  • the source mode current level is initialized to 1500mA
  • approximately 180uA of current flows into the internal resistance of a 3A charging device without power supply.
  • the voltage level across TA's internal resistance Rp is about 1.8v, which is not recognized as an OTG gender and does not trigger the device's internal resistance Rd.
  • FIG. 10 is a flowchart illustrating an operating method according to another embodiment of a device related to the present invention.
  • a plurality of resistors connectable to a specific pin (CC pin) of the USB port of the device.
  • the plurality of resistors may be connected in parallel and have different resistance values.
  • the device 100 may detect that a cable is connected to a USB port based on a voltage applied to a specific pin (CC pin) of the USB port (S1001).
  • the controller 180 checks the current level of the output current of the USB port (S1002). As a result, if the current source applied to a specific pin (CC pin) of the USB port is the default USB current, the current source is connected to the Rd resistor satisfying 1500mA or 3000mA.
  • the controller 180 may determine whether the device 100 operates in the source mode as a result of comparing the voltage applied to the specific pin (CC pin) of the USB port with the reference voltage range (S1003).
  • the controller 180 switches a specific pin (CC pin) of the USB port to be connected to the first resistor.
  • the first resistor corresponds to a resistance value for the current source applied to the USB port to fall within the default USB current range.
  • the controller 180 performs a switching so that a specific pin (CC pin) of the USB port is connected to a second resistor different from the first resistor (S1006).
  • the second resistor corresponds to a resistance value at which the current source across the USB port satisfies the above-defined current level, that is, 1500 mA or 3000 mA.
  • the controller 180 may release the connection between the CC pin and the first resistor and perform the switching to connect the CC pin and the second resistor.
  • a first Rd resistor and a second Rd resistor which may be connected to the CC (or CC1 and CC2), may be arranged in parallel, and additional switching means (s) are provided to perform connection and switching. Can be.
  • the controller 180 of the device 100 may operate the standby mode for a predetermined time. In addition, it is possible to check whether the output current of the USB port is set to the defined current level during the standby mode.
  • the output current of the USB port is set differently from the defined current level, the output current to the USB port is initialized to the predefined current level of 1500 mA or 300 mA, then the standby mode is released and the USB port specific pin (CC The operating mode of the device corresponding to the cable connection can be selected based on the voltage across the pin. Meanwhile, the checking process may be performed at the time when the operation mode of the device is determined as the source mode.
  • the controller 180 of the device 100 after detecting that the cable is connected to the USB port, the controller 180 of the device 100 turns off the power of the main body due to lack of power of the battery. At the time the power is turned on, the output current of the USB port can be reset to the defined current level.
  • the controller 180 memorizes the current operation mode corresponding to the cable connection immediately before the power is turned off, and when the power is turned on, the controller 180 converts the current corresponding to the stored operation mode to the USB. Can be spilled into the pot.
  • information related to an operation mode of the device body may be output to the display unit 151.
  • the information related to the operation mode of the device main body may include information about the type of cable connected to the USB port, information corresponding to the source mode / sink mode, and information indicating when switching from the source mode to the sink mode. have.
  • the output information may disappear when the cable is disconnected from the USB port.
  • the device and its operation method according to an embodiment of the present invention even when the 3A charging device of the unplug state is connected to the USB port, it is not mistaken as a gender. As a result, the device does not generate or minimize an interrupt in which the device repeats the source mode and the sink mode indefinitely, and no standby current is wasted.
  • the present invention described above can be embodied as computer readable codes on a medium in which a program is recorded.
  • the computer-readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include hard disk drives (HDDs), solid state disks (SSDs), silicon disk drives (SDDs), ROMs, RAMs, CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, and the like. This also includes implementations in the form of carrier waves (eg, transmission over the Internet).
  • the computer may include the controller 180 of the terminal. Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un dispositif et un procédé pour l'exploiter. Un mode de réalisation de la présente invention comporte: une unité d'interface formée sur un côté d'un corps de dispositif et comprenant un port USB auquel est connecté un câble d'un dispositif externe; une unité de détection qui détecte qu'un câble est connecté au port USB ou déconnecté de celui-ci; et une unité de commande qui initialise le courant de sortie du port USB à un niveau de courant défini, détermine un mode de fonctionnement du corps de dispositif, correspondant à une connexion d'un dispositif externe, d'après une tension appliquée à une broche particulière du port USB lorsque le dispositif externe est connecté au port USB, et commande le courant de sortie du port USB selon le mode de fonctionnement déterminé. De plus, lorsque le câble est déconnecté du port USB, l'unité de commande réinitialise le courant de sortie du port USB au niveau de courant défini.
PCT/KR2015/012766 2015-11-12 2015-11-26 Dispositif et procédé pour l'exploiter WO2017082448A1 (fr)

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CN107885683B (zh) * 2017-10-10 2021-03-19 华勤技术股份有限公司 一种终端及终端的电流测试方法
KR102364317B1 (ko) * 2020-07-14 2022-02-18 엘지전자 주식회사 디스플레이 장치
WO2023204471A1 (fr) * 2022-04-22 2023-10-26 삼성전자 주식회사 Dispositif électronique et son procédé de commande de charge

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