Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
  • H04N23/60—Control of cameras or camera modules
  • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
  • H04N23/661—Transmitting camera control signals through networks, e.g. control via the Internet
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
  • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
  • H04B5/24—Inductive coupling
  • H04B5/26—Inductive coupling using coils
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
  • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
  • H04B5/43—Antennas
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
  • H04N23/60—Control of cameras or camera modules
  • H04N23/67—Focus control based on electronic image sensor signals
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
  • H04N23/60—Control of cameras or camera modules
  • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices

Definitions

• Multi-turn coil multiplexing circuit multi-turn coil multiplexing circuit control method and device.
• the present application is based on a Chinese patent application with the application number 201310231968.0 and the application date of 2013/6/9, and requires the priority of the Chinese patent application. The entire contents of this application are incorporated herein by reference.
• the present disclosure relates to the technical field of electronic devices, and in particular, to a multi-turn coil multiplexing circuit, a multi-turn coil multiplexing circuit control method, a mobile device, and a device.
• Background technique
• Near Field Communication is a contactless identification and interconnection technology that enables close-range wireless communication between devices such as mobile devices, consumer electronics, personal computers, and smart control tools. FC provides a simple, touch-sensitive solution for information interaction that allows users to easily and intuitively exchange information and access content and services.
• FC is a wireless communication technology, of course, requires the support of the antenna to complete the relevant communication functions. Because the operating frequency of the FC is 13.56MHz, the wavelength of the electromagnetic wave at this frequency is very long (about 22 meters), and the distance that the FC requires information to read and write is very short (about 3-5 mm). Therefore, the FC antenna usually uses magnetic field coupling. The coil antenna of the mode is adapted to the requirements of the FC.
• FC antennas are often built into the device. For example, many FC antennas on the mobile phone are attached to the battery cover or battery, and the FC antenna is connected to the FC through the FC antenna contact. On the RF link.
• FC antenna is close to the metal, eddy currents are generated on the metal surface, and the magnetic field of the eddy current weakens the magnetic field of the FC antenna, affecting the performance of the antenna. Therefore, it is usually necessary to apply a layer of magnetic material under the FC antenna, so that the magnetic field generated by the FC antenna is concentrated in the magnetic material region in the direction of the battery, and does not reach the surface of the metal-containing device such as a battery, thereby avoiding the metal. The surface creates an eddy current that weakens the magnetic field of the coil itself.
• the above-mentioned FC antenna integration method not only damages the appearance integrity of the battery cover of the device, but also affects the design of the electronic device; more importantly, because the FC antenna is connected to the FC radio link of the device main board through the contact, As the number of times the battery cover is removed and assembled, the contact performance of the contacts is continuously deteriorated, and the performance of the FC antenna is also deteriorated. Summary of the invention
• the embodiment of the present disclosure provides a multi-turn coil multiplexing circuit and a multi-turn coil multiplexing circuit control method, and the FC antenna is disposed on the main board to solve the problem that the performance of the FC antenna gradually deteriorates as the number of uses increases.
• a multi-turn coil multiplexing circuit comprising: a multi-turn coil, a switch, a short-range wireless communication FC matching circuit, and a camera sub-board; wherein the switch includes a common port, a first port, and a second port;
• the multi-turn coil is connected to the common port, the FC matching circuit is connected to the first port, and the camera sub-board is connected to the second port;
• the multi-turn coil When there is a camera control signal, the second port is connected, the multi-turn coil is used as a camera focusing coil in the camera sub-board; when there is no camera control signal, the first port is connected, The multi-turn coil is used as the FC antenna in the FC matching circuit.
• the multi-turn coil multiplexing circuit further includes:
• the CPU is respectively connected to the FC chip and the camera sub-board; the FC chip is connected to the FC matching circuit;
• the CPU is configured to output an FC control signal, an output camera control signal, and an output switch control signal, where the switch control signal includes a first port connection signal and a second port connection signal;
• the FC chip is configured to generate an NFC signal according to the NFC control signal
• the CPU When the camera startup trigger event is detected, the CPU outputs a camera control signal and outputs a second port connection signal, and controls the switch to switch to the second port, where the camera daughter board is connected when the second port is connected,
• the camera control signal output by the CPU adjusts a current flowing through the multi-turn coil
• the CPU stops outputting the camera control signal
• the first port communication signal is output, and the switch is controlled to be switched to the first port, and the FC matching circuit is connected when the first port is connected. And adjusting the resonance of the multi-turn coil according to the FC signal output by the FC chip.
• the multi-turn coil is disposed on the main board.
• the length of the multi-turn coil is one quarter of the wavelength of the electromagnetic wave of the FC operating frequency.
• a control method of a multi-turn coil multiplexing circuit including a multi-turn coil, a switch, a short-range wireless communication FC matching circuit, and a camera sub-board is provided.
• the switch includes a common port, a first port, and a second port; the multi-turn coil is connected to the common port, the FC matching circuit is connected to the first port, and the camera sub-board is connected Into the second port;
• the method includes:
• the second port When there is a camera control signal, the second port is connected, and the multi-turn coil is used as a camera focus coil in the camera sub-board;
• the first port When there is no camera control signal, the first port is connected, and the multi-turn coil is used as an FC antenna in the FC matching circuit.
• the multi-turn coil multiplexing circuit further includes a CPU and an FC chip; wherein, the CPU is respectively connected to the FC chip and the camera sub-board; and the FC chip is connected to the FC matching circuit;
• the CPU is configured to output an FC control signal, an output camera control signal, and an output switch control signal;
• the switch control signal includes a first port connection signal and a second port connection signal;
• the step of connecting the second port and using the multi-turn coil as a camera focus coil in the camera sub-board includes:
• the camera control signal is output and the second port communication signal is output;
• the switch is configured to switch to the second port according to the second port connection signal;
• the step of connecting the first port and using the multi-turn coil as the FC antenna in the FC matching circuit includes:
• the switch is configured to switch to the first port according to the first port connection signal
• the FC signal is transmitted to the FC matching circuit through the first port, and the FC matching circuit is configured to adjust the resonance of the multi-turn coil according to the FC signal.
• the multi-turn coil is disposed on the main board.
• the length of the multi-turn coil is one quarter of the wavelength of the electromagnetic wave of the FC operating frequency.
• the switch includes a common port, a first port, and a second port;
• the multi-turn coil is connected to the common port, the FC matching circuit is connected to the first port, and the camera sub-board is connected to the second port;
• the second port When there is a camera control signal, the second port is connected, and the multi-turn coil is used as a camera focusing coil in the camera sub-board; when there is no camera control signal, the first port is connected, The ⁇ coil is used as the FC antenna in the FC matching circuit.
• the mobile device further includes:
• the CPU is respectively connected to the FC chip and the camera sub-board; the FC chip is connected to the FC matching circuit;
• the CPU is configured to output an FC control signal, an output camera control signal, and an output switch control signal, where the switch control signal includes a first port connection signal and a second port connection signal;
• the FC chip is configured to generate an NFC signal according to the NFC control signal
• the CPU When the camera startup trigger event is detected, the CPU outputs a camera control signal and outputs a second port connection signal, and controls the switch to switch to the second port, when the camera sub-board is connected to the second port, Adjusting a current flowing through the multi-turn coil according to a camera control signal output by the CPU;
• the CPU stops outputting the camera control signal, and outputs a first port connection signal, and controls the switch to switch to the first port, where the FC matching circuit is connected when the first port is connected. Resonance of the multi-turn coil is adjusted according to an FC signal output by the FC chip.
• the multi-turn coil is disposed on the main board.
• the length of the multi-turn coil is four quarters of the wavelength of the electromagnetic wave of the FC operating frequency.
• an apparatus including a multi-turn coil multiplexing circuit including a multi-turn coil, a switch, a short-range wireless communication FC matching circuit, and
• the switch sub-board includes: a common port, a first port, and a second port; the multi-turn coil is connected to the common port; the FC matching circuit is connected to the first port, the camera The sub-board is connected to the second port; the device further includes:
• One or more processors are One or more processors;
• One or more modules the one or more modules being stored in the memory and configured to be executed by the one or more processors, wherein the one or more modules have the following functions:
• the second port When there is a camera control signal, the second port is connected, and the multi-turn coil is used as a camera focus coil in the camera sub-board;
• the first port When there is no camera control signal, the first port is connected, and the multi-turn coil is used as an FC antenna in the FC matching circuit.
• the technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:
• the FC antenna of the embodiment of the present disclosure is shared with the camera focusing coil, and a multi-purpose material is used, which saves some of the production processes, improves the production efficiency, and also saves labor and resource costs of production.
• the embodiment of the present disclosure directly integrates the FC antenna on the main board, thereby avoiding the contact failure of the FC antenna contacts due to the disassembly and assembly of the battery cover, and enhancing the stability of the FC antenna. Meanwhile, the embodiment of the present disclosure eliminates the battery attached to the device.
• the FC antenna on the cover or battery maintains its appearance and is more aesthetically pleasing.
• FIG. 1 is a schematic structural diagram of Embodiment 1 of a multi-turn coil multiplexing circuit according to an exemplary embodiment
• 2 is a schematic structural diagram of Embodiment 2 of a multi-turn coil multiplexing circuit according to an exemplary embodiment
• FIG. 3 is a schematic diagram of a control method for a multi-turn coil multiplexing circuit according to an exemplary embodiment. Step flow chart of the example. detailed description
• a core idea of an embodiment of the present disclosure is that it can simultaneously satisfy the focusing function of the camera and the function of the FC antenna by rationally processing the multi-turn coil.
• FC and camera integrate FC and camera at the same time, such as smart phones, handheld computers, etc.
• the focal length that is, the focusing lens that needs to move the camera, so that the focus of the image is exactly on the photosensitive sensor of the camera.
• the process of adjusting the focal length of the camera is to adjust the magnitude of the magnetic field generated by the coil by changing the magnitude of the current flowing through the focusing coil of the camera, thereby changing the electromagnet formed by the focusing coil and the permanent magnet integrated on the camera.
• the interaction force is used to achieve the function of changing the distance between the focusing lens of the camera and the photosensitive sensor to achieve the purpose of focusing.
• the FC antenna is essentially a loop antenna whose total length is close to a quarter of the wavelength of the electromagnetic wave of the FC operating frequency. When the total length of the camera focusing coil is close to this length, it can also be used as an FC antenna.
• the resonant frequency of the FC antenna is mainly determined by the length of the FC antenna, and the resonant frequency of the FC antenna is often adjusted by adding a tuning circuit, so the above length error is acceptable in the range of a few millimeters.
• the multi-turn coil multiplexing circuit may include:
• a multi-turn coil 100 a changeover switch 101, a short-range wireless communication FC matching circuit 102 and a camera sub-board 103; wherein the switch comprises a common port, a first port and a second port;
• the multi-turn coil can be connected to the common port, the FC matching circuit can be connected to the first port, and the camera sub-board can be connected to the second port;
• the second port When there is a camera control signal, the second port can be connected, and the multi-turn coil can be used as the camera focusing coil in the camera sub-board; when there is no camera control signal, the first port can be connected, and the multi-turn coil can be used as the FC matching.
• FC antenna in the circuit When there is a camera control signal, the second port can be connected, and the multi-turn coil can be used as the camera focusing coil in the camera sub-board; when there is no camera control signal, the first port can be connected, and the multi-turn coil can be used as the FC matching. FC antenna in the circuit.
• the changeover switch may be a double pole double throw switch.
• a multi-turn coil is connected to the common end of the double-pole double-throw switch, an FC matching circuit is connected to the first port of the double-pole double-throw switch, and a camera sub-board is connected to the second port of the double-pole double-throw switch.
• an FC matching circuit is connected to the first port of the double-pole double-throw switch
• a camera sub-board is connected to the second port of the double-pole double-throw switch.
• the multi-turn coil When the first port is connected, the multi-turn coil is connected to the FC matching circuit, and the multi-turn coil is used as the FC antenna; when the camera starts to work, there is a camera control signal, and when the camera control signal is monitored, the double-pole double-throw switch The knife blade can be switched to the second port, and the multi-turn coil is connected to the camera sub-board, and the focus coil is used as a focusing coil of the camera to adjust the focal length. When the camera stops working, the camera control signal stops outputting. When the camera control signal is not detected, the blade of the double-pole double-throw switch is connected to the first port again, and the multi-turn coil is connected to the FC matching circuit.
• the FC antenna of the embodiment of the present disclosure is shared with the camera focusing coil, and a multi-purpose material is used, which saves some of the production processes, improves the production efficiency, and also saves labor and resource costs of production.
• a multi-turn coil may be disposed on the main board.
• the motherboard can be a motherboard for devices integrating FC and camera, such as mobile devices, consumer electronics, personal computers and smart control tools.
• the embodiment of the present disclosure directly integrates the FC antenna on the main board, thereby avoiding the contact failure of the FC antenna contacts due to the disassembly and assembly of the battery cover, and enhancing the stability of the FC antenna. Meanwhile, the embodiment of the present disclosure eliminates the battery attached to the device.
• the FC antenna on the cover or battery maintains its appearance and is more aesthetically pleasing.
• the length of the multi-turn coil may be one quarter of the wavelength of the electromagnetic wave of the FC operating frequency.
• the FC antenna can be fabricated from a material with a high dielectric constant to reduce its length, or a tuning circuit can be used to adjust the resonant frequency of a coil to the operating frequency of the FC.
• the main factor affecting the performance is the length of the FC antenna.
• the influence factors of its performance include current, number of turns, etc., but the influence of these influencing factors is not effective.
• the combined effect of the FC antenna can be adjusted by tuning the circuit. Therefore, in the multi-turn coil of the embodiment of the present disclosure, the length of the multi-turn coil can be selected according to the performance requirements of the FC antenna, and the parameters such as the number of turns, the thickness, and the like of the multi-turn coil can be determined according to other limiting conditions of the focus coil.
• 2 is a schematic structural diagram of Embodiment 2 of a multi-turn coil multiplexing circuit according to an embodiment of the present disclosure, and the multi-turn coil multiplexing circuit may include:
• Multi-turn coil 200 switch 201, short-range wireless communication FC matching circuit 202, camera sub-board 203, CPU 204 and FC chip 205;
• the switch can include a common port, a first port, and a second port;
• the multi-turn coil can be connected to the common port, the FC matching circuit can be connected to the first port, and the camera sub-board can be connected to the second port; the CPU can be respectively connected to the FC chip and the camera sub-board; the FC chip can be matched with the FC Road connected
• the CPU may be configured to output an FC control signal, an output camera control signal, and an output switch control signal, where the switch control signal may include a first port connection signal and a second port connection signal;
• the FC chip can be used to generate an FC signal according to the FC control signal
• the CPU When the camera startup trigger event is detected, the CPU outputs the camera control signal and outputs the second port connection signal, and the control switch is switched to the second port.
• the camera control signal can be adjusted according to the CPU output. Current flowing through a multi-turn coil;
• the CPU stops outputting the camera control signal, outputs the first port connection signal, and controls the switch to switch to the first port.
• the CPU can adjust according to the FC signal output by the CPU. The resonance of a multi-turn coil.
• the default state of the switch of the embodiment of the present disclosure may be connected to the FC matching circuit, that is, the default state of the multi-turn coil may be used as the FC antenna.
• the camera startup trigger event may be that the user clicks the camera icon on the operation interface to start the camera, and the action such as clicking the icon sends an operation command to the CPU, and the CPU controls the switch.
• the switch switches the multi-turn coil to the camera sub-board for use as a focusing coil.
• the camera close trigger event can be a click exit button, etc.
• the embodiment of the present disclosure can use the multi-turn coil as the FC antenna by default, and then access when needed.
• the camera sub-board is used as a focusing coil.
• the default use mode of the above-mentioned multi-turn coil is only an example.
• the default usage mode of other multi-turn coils can be set according to actual conditions, for example, the default focus of the multi-turn coil can be set as the focus coil of the camera.
• the FC matching circuit is connected.
• the multi-turn coil can be set to not connect to the FC matching circuit and the camera sub-board by default.
• the FC matching circuit or the camera sub-board is connected, due to space limitation. This manual is not detailed here.
• a multi-turn coil may be disposed on the main board.
• the length of the multi-turn coil may be one quarter of the wavelength of the electromagnetic wave of the FC operating frequency.
• the multi-turn coil multiplexing circuit may include a multi-turn coil, a switch, a short-range wireless communication FC matching circuit, and a camera sub-board; wherein the switch includes a common port, a first port, and a second port; Multiple coils can be connected to the common port, and the FC matching circuit can be connected to the first port. Like the headboard can access the second port;
• Step 301 when there is a camera control signal, connect the second port, and use the multi-turn coil as a camera focusing coil in the camera sub-board;
• Step 302 When there is no camera control signal, connect the first port, and use the multi-turn coil as the FC antenna in the FC matching circuit.
• the multi-turn coil multiplexing circuit can also be a CPU and an FC chip; wherein, the CPU can be respectively connected to the FC chip and the camera sub-board; the FC chip can be connected to the FC matching circuit; For outputting an FC control signal, outputting a camera control signal, and outputting a switch control signal; wherein, the switch control signal may include a first port connection signal and a second port connection signal;
• step 301 may further include the following sub-steps:
• Sub-step 3011 when the camera startup trigger event is detected, outputting a camera control signal and outputting a second port connection signal; the switch is configured to switch to the second port according to the second port connection signal;
• the camera control signal is transmitted to the camera sub-board through the second port, and the camera sub-board is configured to adjust the current flowing through the multi-turn coil according to the camera control signal.
• Step 302 can further include the following sub-steps:
• Sub-step 3021 when detecting the camera off trigger event, stopping outputting the camera control signal, outputting the first port connection signal; the switch is configured to switch to the first port according to the first port connection signal;
• the FC control signal is transmitted to the FC chip, and the FC chip is configured to generate the FC signal according to the FC control signal;
• the FC signal is transmitted to the FC matching circuit through the first port, and the FC matching circuit is used to adjust the resonance of the multi-turn coil according to the FC signal.
• a multi-turn coil may be disposed on the main board.
• the length of the multi-turn coil may be one quarter of the wavelength of the electromagnetic wave of the FC operating frequency.
• the FC antenna of the embodiment of the present disclosure is shared with the camera focusing coil, and a multi-purpose material is used, which saves some of the production processes, improves the production efficiency, and also saves labor and resource costs of production.
• the embodiment of the present disclosure directly integrates the FC antenna on the main board, thereby avoiding the contact failure of the FC antenna contacts due to the disassembly and assembly of the battery cover, and enhancing the stability of the FC antenna. Meanwhile, the embodiment of the present disclosure eliminates the battery attached to the device.
• the FC antenna on the cover or battery maintains its appearance and is more aesthetically pleasing.
• the description is relatively simple, and the relevant portion can be referred to the description of the embodiment of the multi-turn coil multiplexing circuit.
• An embodiment of the present disclosure provides a mobile device, where the mobile device may include:
• the switch includes a common port, a first port, and a second port;
• the multi-turn coil can be connected to the common port;
• the FC matching circuit can be connected to the first port, and the camera sub-board can be connected to the second port;
• the second port When there is a camera control signal, the second port can be connected, and the multi-turn coil can be used as the camera focusing coil in the camera sub-board; when there is no camera control signal, the first port can be connected, and the multi-turn coil can be used as the FC matching.
• FC antenna in the circuit When there is a camera control signal, the second port can be connected, and the multi-turn coil can be used as the camera focusing coil in the camera sub-board; when there is no camera control signal, the first port can be connected, and the multi-turn coil can be used as the FC matching. FC antenna in the circuit.
• the mobile device may further include:
• the CPU may be respectively connected to the FC chip and the camera sub-board; the FC chip may be connected to the FC matching circuit;
• the CPU may be configured to output an FC control signal, an output camera control signal, and an output switch control signal, where the switch control signal may include a first port connection signal and a second port connection signal;
• the FC chip can be used to generate an FC signal according to the FC control signal
• the CPU may output a camera control signal and output a second port connection signal, and control the switch to switch to the second port.
• the camera control signal may be output according to the CPU. Adjusting the current flowing through the multi-turn coil;
• the CPU may stop outputting the camera control signal, output the first port connection signal, and control the switch to switch to the first port.
• the FC matching circuit may be output according to the FC chip.
• the FC signal regulates the resonance of the multi-turn coil.
• the multi-turn coil can be disposed on the main board.
• the length of the multi-turn coil may be one quarter of the wavelength of the electromagnetic wave of the FC operating frequency.
• the FC antenna of the embodiment of the present disclosure is shared with the camera focusing coil, and a multi-purpose material is used, which saves some of the production processes, improves the production efficiency, and also saves labor and resource costs of production.
• the embodiment of the present disclosure directly integrates the FC antenna on the main board, thereby avoiding the contact failure of the FC antenna contacts due to the disassembly and assembly of the battery cover, and enhancing the stability of the FC antenna. Meanwhile, the embodiment of the present disclosure eliminates the battery attached to the device.
• the FC antenna on the cover or battery maintains its appearance and is more aesthetically pleasing.
• the embodiment of the present disclosure further provides an apparatus, which may include a multi-turn coil multiplexing circuit, and the multi-turn coil multiplexing circuit may include a multi-turn coil, a switch, a short-range wireless communication FC matching circuit, and a camera sub-board;
• the switch may include a common port, a first port, and a second port; the multi-turn coil may be connected to the common port, the FC matching circuit may be connected to the first port, and the camera sub-board may be connected to the second port;
• the device may further include:
• One or more processors are One or more processors;
• the second port When there is a camera control signal, the second port is connected, and the multi-turn coil is used as a camera focusing coil in the camera sub-board;
• the first port When there is no camera control signal, the first port is connected, and the multi-turn coil is used as the FC antenna in the FC matching circuit.
• the multi-turn coil multiplexing circuit may further include a CPU and an FC chip; wherein, the CPU may be respectively connected to the FC chip and the camera sub-board; the FC chip may be connected to the FC matching circuit; the CPU may be used for output The FC control signal, the output camera control signal, and the output switch control signal; wherein, the switch control signal may include a first port connection signal and a second port connection signal; the one or more modules may also have the following functions - when the camera is detected to be activated When the event is triggered, the camera control signal is output and the second port communication signal is output; the switch is configured to switch to the second port according to the second port connection signal;
• the camera control signal is transmitted to the camera sub-board through the second port, and the camera sub-board is configured to adjust the current flowing through the multi-turn coil according to the camera control signal;
• the output camera control signal is stopped, and the first port connection signal is output;
• the switch is configured to switch to the first port according to the first port connection signal;
• the FC signal is transmitted to the FC matching circuit through the first port, and the FC matching circuit is used to adjust the resonance of the multi-turn coil according to the FC signal.
• a multi-turn coil may be disposed on the main board.
• the length of the multi-turn coil may be one quarter of the wavelength of the electromagnetic wave at the FC operating frequency.
• the FC antenna of the embodiment of the present disclosure is shared with the camera focusing coil, and a multi-purpose material is used, which saves some of the production processes, improves the production efficiency, and also saves labor and resource costs of production.
• the embodiment of the present disclosure directly integrates the FC antenna on the main board, thereby avoiding the contact failure of the FC antenna contacts due to the disassembly and assembly of the battery cover, and enhancing the stability of the FC antenna. Meanwhile, the embodiment of the present disclosure eliminates the battery attached to the device.
• the FC antenna on the cover or battery maintains its appearance and is more aesthetically pleasing.
• the embodiment of the present disclosure further provides a non-volatile readable storage medium, where the storage medium stores one or more programs, and the one or more modules are applied to a multi-turn coil multiplexing circuit.
• the loop multiplexing circuit may include a multi-turn coil, a switch, a short-range wireless communication FC matching circuit, and a camera sub-board; wherein the switch may include a common port, a first port, and a second port; the multi-turn coil may be connected to the public The port, the FC matching circuit can be connected to the first port, and the camera sub-board can be connected to the second port, so that the device can execute the following steps (instructions):
• the second port When there is a camera control signal, the second port is connected, and the multi-turn coil is used as a camera focusing coil in the camera sub-board;
• the first port When there is no camera control signal, the first port is connected, and the multi-turn coil is used as the FC antenna in the FC matching circuit.
• the multi-turn coil multiplexing circuit may further include a CPU and an FC chip; wherein, the CPU may be respectively connected to the FC chip and the camera sub-board; the FC chip may be connected to the FC matching circuit; the CPU may be used for output The FC control signal, the output camera control signal, and the output switch control signal; wherein, the switch control signal may include a first port connection signal and a second port connection signal; the one or more modules may also have the following functions - when the camera is detected to be activated When the event is triggered, the camera control signal is output and the second port communication signal is output; the switch is configured to switch to the second port according to the second port connection signal;
• the camera control signal is transmitted to the camera sub-board through the second port, and the camera sub-board is used to adjust the current flowing through the multi-turn coil according to the camera control signal; when the camera close trigger event is detected, the output camera control signal is stopped, and the output is first.
• a port connection signal; the switch is configured to switch to the first port according to the first port connection signal;
• the FC signal is transmitted to the FC matching circuit through the first port, and the FC matching circuit is used to adjust the resonance of the multi-turn coil according to the FC signal.
• a multi-turn coil may be disposed on the main board.
• the length of the multi-turn coil may be one quarter of the wavelength of the electromagnetic wave at the FC operating frequency.
• embodiments of the disclosed embodiments can be provided as a method, apparatus, or computer program product.
• embodiments of the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
• embodiments of the present disclosure may take the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied. .
• Embodiments of the present disclosure are described with reference to flowchart illustrations and/or block diagrams of methods, mobile devices (systems), and computer program products according to embodiments of the present disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flow and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions.
• These computer program instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor or other programmable data processing mobile
• a processor of the device to generate a machine such that instructions executed by a processor of a computer or other programmable data processing mobile device are generated for implementing one or more blocks in a flow or processes and/or block diagrams of the flowchart
• the device for the function specified in the box.
• the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing mobile device to operate in a particular manner, such that instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
• the instruction device implements the functions specified in one or more flows of the flowchart and one or more blocks of the I or block diagram.

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• Near-Field Transmission Systems (AREA)
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• 2013
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