Abstract: A gateway, an Internet of Things (IoT) device control system and a method thereof are provided. The method includes: receiving an event message; obtaining a first fact record corresponding to the event message according to the event message; inferring an intention corresponding to a user according to the first fact record; determining a service to be provided to the user according to the intention corresponding to the user; and outputting an output message to a first IoT device according to the determined service such that the first IoT device provides the service according to the output message.

Abstract: A method for avoiding establishing an inefficient wireless connection for a communications apparatus capable of supporting cellular communications and WLAN communications includes: receiving a beacon frame from a first network device, wherein the first network device is a WLAN network device which provides wireless communications service in a predetermined wireless local area network; identifying the first network device according to an identifier obtained from the beacon frame; determining whether to connect to the first network device according to a connectivity record of the first network device or a usage scenario of the communications apparatus; and not connecting to the first network device if a WLAN connection to be established with the first network device is determined as an inefficient connection.

Abstract: A gateway, an Internet of Things (IoT) device control system and a method thereof are provided. The method includes: receiving an event message; obtaining a first fact record corresponding to the event message according to the event message; inferring an intention corresponding to a user according to the first fact record; determining a service to be provided to the user according to the intention corresponding to the user; and outputting an output message to a first IoT device according to the determined service such that the first IoT device provides the service according to the output message.

Abstract: A wireless charging receiving device includes a body, a metal housing, a receiving coil, and a power storage device. The metal housing is coupled to the body to form an accommodating space. The metal housing includes an aperture and at least one slit. The slit interconnects the aperture and the edge of the metal housing. The receiving coil is disposed between the metal housing and the body. The receiving coil defines a through hole by a looped configuration, and the through hole overlaps at least part of the aperture of the metal housing. The power storage device is disposed within the accommodating space and electrically connected to the receiving coil. Electromagnetic waves are able to pass through the aperture of the metal housing and are magnetically coupled to the receiving coil, such that the receiving coil transfers the energy of the electromagnetic waves to the power storage device.

Abstract: A wireless charging receiving device includes a body, a metal housing, a receiving coil, and a power storage device. The metal housing is coupled to the body to form an accommodating space. The metal housing includes an aperture and at least one slit. The slit interconnects the aperture and the edge of the metal housing. The receiving coil is disposed between the metal housing and the body. The receiving coil defines a through hole by a looped configuration, and the through hole overlaps at least part of the aperture of the metal housing. The power storage device is disposed within the accommodating space and electrically connected to the receiving coil. Electromagnetic waves are able to pass through the aperture of the metal housing and are magnetically coupled to the receiving coil, such that the receiving coil transfers the energy of the electromagnetic waves to the power storage device.

Abstract: A wireless charging receiving device includes a body, a metal housing, a receiving coil, and a power storage device. The metal housing is coupled to the body to form an accommodating space. The metal housing includes an aperture and at least one slit. The slit interconnects the aperture and the edge of the metal housing. The receiving coil is disposed between the metal housing and the body. The receiving coil defines a through hole by a looped configuration, and the through hole overlaps at least part of the aperture of the metal housing. The power storage device is disposed within the accommodating space and electrically connected to the receiving coil. Electromagnetic waves are able to pass through the aperture of the metal housing and are magnetically coupled to the receiving coil, such that the receiving coil transfers the energy of the electromagnetic waves to the power storage device.

Abstract: A mobile device includes an antenna structure, a signal source, and an IPMC (Ionic Polymer Metal Composite). The signal source is configured to excite the antenna structure. The IPMC is configured as a flexible actuator to adjust a resonant length of the antenna structure in such a manner that the antenna structure is capable of operating in multiple bands.

Abstract: A handheld device and a planar antenna thereof are provided. The planar antenna comprises a radiator with an open terminal, a short terminal, a first feeding terminal and a second feeding terminal. The short terminal is coupled to a ground terminal. The first feeding terminal is formed between the open terminal and the short terminal, and coupled to a radio frequency (RF) signal terminal. The second feeding terminal is formed between the open terminal and the first feeding terminal, and coupled to the first feeding terminal by a transmission line and a switch element. The radiator resonates at the first central frequency when the switch element is turned off, and resonates at the second central frequency when the switch element is turned on.

Abstract: A handheld device is provided, wherein the handheld device comprises a housing, a circuit board, a planar antenna and a switch. The housing comprising an outer surface is configured to define a receiving space. The circuit board is disposed in the receiving space. The planar antenna comprises a metal layer, wherein the metal layer comprising a first connecting point and a second connecting point is patterned on the outer surface. The switch comprising a first electrode and a second electrode is configured to control the electrical connection between the first connecting point and the second connecting point, wherein the first electrode and the second electrode are electrically connected between the first connecting point and the second connecting point. The planar antenna operates at a first central band when the switch is turned on, and operates at a second central band when the switch is turned off.

Abstract: A communication method used in a handheld communication device is provided. The communication method comprises the steps outlined below. Whether a voice communication is established is determined. When the voice communication is established, a sensing element is activated to determine whether the handheld communication device is operated in a hand mode. When the handheld communication device is not operated in the hand mode, an antenna module of the handheld communication device would be operated in a first operation frequency band to perform the voice communication. When the handheld communication device is operated in the hand mode, the antenna module of the handheld communication device would be operated in a second operation frequency band to perform the voice communication, in which the second operation frequency band is higher than the first operation frequency band. A handheld communication device is disclosed herein as well.

Abstract: A wireless charging receiving device includes a body, a metal housing, a receiving coil, and a power storage device. The metal housing is coupled to the body to form an accommodating space. The metal housing includes an aperture and at least one slit. The slit interconnects the aperture and the edge of the metal housing. The receiving coil is disposed between the metal housing and the body. The receiving coil defines a through hole by a looped configuration, and the through hole overlaps at least part of the aperture of the metal housing. The power storage device is disposed within the accommodating space and electrically connected to the receiving coil. Electromagnetic waves are able to pass through the aperture of the metal housing and are magnetically coupled to the receiving coil, such that the receiving coil transfers the energy of the electromagnetic waves to the power storage device.

Abstract: A handheld device is provided, wherein the handheld device comprises a housing, a circuit board, a planar antenna and a switch. The housing comprising an outer surface is configured to define a receiving space. The circuit board is disposed in the receiving space. The planar antenna comprises a metal layer, wherein the metal layer comprising a first connecting point and a second connecting point is patterned on the outer surface. The switch comprising a first electrode and a second electrode is configured to control the electrical connection between the first connecting point and the second connecting point, wherein the first electrode and the second electrode are electrically connected between the first connecting point and the second connecting point. The planar antenna operates at a first central band when the switch is turned on, and operates at a second central band when the switch is turned off.

Abstract: A mobile device includes an antenna structure, a signal source, and an IPMC (Ionic Polymer Metal Composite). The signal source is configured to excite the antenna structure. The IPMC is configured as a flexible actuator to adjust a resonant length of the antenna structure in such a manner that the antenna structure is capable of operating in multiple bands.

Abstract: A handheld device is provided, wherein the handheld device comprises a housing, a circuit board, a planar antenna and a switch. The housing comprising an outer surface is configured to define a receiving space. The circuit board is disposed in the receiving space. The planar antenna comprises a metal layer, wherein the metal layer comprising a first connecting point and a second connecting point is patterned on the outer surface. The switch comprising a first electrode and a second electrode is configured to control the electrical connection between the first connecting point and the second connecting point, wherein the first electrode and the second electrode are electrically connected between the first connecting point and the second connecting point. The planar antenna operates at a first central band when the switch is turned on, and operates at a second central band when the switch is turned off.

Abstract: A handheld device and a planar antenna thereof are provided. The planar antenna comprises a radiator having a feeding point, a first short point and a second short point. The feeding point is coupled to a circuit board of the handheld device so that the handheld device transmits and receives a RF (radio frequency) signal through the radiator. The first short point is coupled to a ground of the circuit board so as to be grounded. A control element is disposed on the handheld device or the planar antenna in order to control the second short point to be selectively electrically coupled to the ground so that the planar antenna can operate at two different central frequencies. Furthermore, the planar antenna can operate at multiple central frequencies by changing a position of the second short point contacted to the radiator.

Abstract: A portable communication device and an adjustable antenna thereof are disclosed herein. The portable communication device includes a substrate, the adjustable antenna and a control circuit. The adjustable antenna includes an antenna body, an adjusting element, a feeding terminal and a ground terminal. The antenna body has multiple conductive portions and is disposed above the substrate. The adjusting element is coupled between the conductive portions. The feeding terminal and the ground terminal extend from the antenna body and are coupled to the substrate. The control circuit feeds a first control signal and a second control signal respectively through the feeding terminal and the ground terminal to the adjusting element, so as to adjust an electrical length of the adjustable antenna.

Abstract: A handheld device and a planar antenna thereof are provided. The planar antenna comprises a radiator, a screening element and a switch. The screening element is configured to make the planar antenna operating in a first high-frequency (HF) current path and a first low-frequency (LF) current path, and the switch is configured to make the planar antenna operating in a second HF current path and a second LF current path. The planar antenna operates at a first HF central frequency corresponding to the first HF current path and a first LF central frequency corresponding to the first LF current path when the switch is turned off, and operates at a second HF central frequency corresponding to the second HF current path and a second LF central frequency corresponding to the second LF current path when the switch is turned on.

Abstract: A portable communication device and an adjustable antenna thereof are disclosed herein. The portable communication device includes a substrate, the adjustable antenna and a control circuit. The adjustable antenna includes an antenna body, an adjusting element, a feeding terminal and a ground terminal. The antenna body has multiple conductive portions and is disposed above the substrate. The adjusting element is coupled between the conductive portions. The feeding terminal and the ground terminal extend from the antenna body and are coupled to the substrate. The control circuit feeds a first control signal and a second control signal respectively through the feeding terminal and the ground terminal to the adjusting element, so as to adjust an electrical length of the adjustable antenna.

Abstract: A communication method used in a handheld communication device is provided. The communication method comprises the steps outlined below. Whether a voice communication is established is determined. When the voice communication is established, a sensing element is activated to determine whether the handheld communication device is operated in a hand mode. When the handheld communication device is not operated in the hand mode, an antenna module of the handheld communication device would be operated in a first operation frequency band to perform the voice communication. When the handheld communication device is operated in the hand mode, the antenna module of the handheld communication device would be operated in a second operation frequency band to perform the voice communication, in which the second operation frequency band is higher than the first operation frequency band. A handheld communication device is disclosed herein as well.