Abstract:
A method and an apparatus for controlling a transmit signal of a radio frequency power amplifier are provided. The method includes: adjusting a power supply voltage of the power amplifier to an efficiency point power supply voltage under designated transmit power; querying correspondence between an input voltage and transmit power at each power level under the efficiency point power supply voltage; and adjusting, according to the correspondence, an input voltage to an input voltage corresponding to the designated transmit power. The embodiments of the present invention, the power amplifier is enabled to work at an optimum efficiency point while the transmit power of the power amplifier is under control, which improves efficiency of the power amplifier.
Abstract:
A capacitive switch includes: a first conductive cantilever, a second conductive cantilever, a substrate, a coplanar waveguide arranged on the substrate, the coplanar waveguide includes a first conductor configured to transmit an electrical signal, a second conductor and a third conductor are arranged as ground wires on two sides of the first conductor; an insulation medium layer is arranged on the first conductor, a conducting layer is arranged on the insulation medium layer; the first conductive cantilever is connected to the second conductor by using a first fixed end, the second conductive cantilever is connected to the third conductor by using a second fixed end; when a direct-current signal is transmitted on the capacitive switch, a first free end of the first conductive cantilever and a second free end of the second conductive cantilever contact the conducting layer.
Abstract:
Embodiments of the present disclosure provide a network locking method and apparatus for a terminal. The method mainly includes: utilizing an IMSI number carried on a SIM card of the terminal to register the SIM card with a network, and obtaining a PLMN number of the network; comparing a PLMN number segment of the network with a valid PLMN number segment pre-stored on the terminal, and allowing or limiting, according to a comparison result, use of the SIM card by the terminal. According to the embodiments of the present disclosure, the SIM card is registered with the network by utilizing the IMSI number carried on the SIM card and a data card is verified in the terminal and network combined verification manner, which may ensure security of network locking for the terminal.
Abstract:
The present invention discloses a video conference control method and a conference terminal. The method includes: receiving multi-video information, where the multi-video information includes videos of at least two remote conference sites; displaying the multi-video information on a display screen, where the display screen includes a main video display area and an auxiliary video selection area; and performing, according to a received conference control operation request, a corresponding conference control operation on a conference site corresponding to a video displayed in the auxiliary video selection area. According to the present invention, the display screen is divided into the main video display area and the auxiliary video selection area, so that a user may perform a conference control operation on a video of a remote conference site through the auxiliary video selection area, a conference site that needs to be viewed is displayed in the main video display area.
Abstract:
Embodiments of the present invention provide a docking station and an external device control method and system utilizing the docking station, which are capable of implementing simultaneous working of devices of two types of protocols through a same multiplexing interface. The external device control method includes: utilizing a docking station, where the docking station includes: a first protocol/second protocol multiplexing interface for connecting to a main device; at least one first protocol device interface for connecting to a first protocol external device; and at least one second protocol device interface for connecting to a second protocol external device. The method is: receiving first protocol data sent by the first protocol external device through the first protocol device interface; and converting the first protocol data into second protocol data, and sending the second protocol data to the main device through the first protocol/second protocol multiplexing interface.
Abstract:
A network access method, an interface device, and a mobile network access device are provided. The interface device may specifically include: a first network port, a first processor, and a first universal serial bus (USB) interface, where the first USB interface is connected to the mobile network access device; the first network port is connected to a wired wide area network; and the first processor includes a detection unit and an instruction unit, where the detection unit is configured to detect whether the wired wide area network is available and the instruction unit is configured to send, when the detection unit detects that the wired wide area network is available, first network access instruction information to the mobile network access device by using the first USB interface.
Abstract:
A universal serial bus (USB) device communication method that relates to the field of communications includes: receiving, by a USB device, a device type query message sent by a peer device, where a human interface device (HID) descriptor and a HID report descriptor are added to a driver of the USB device; sending, by the USB device according to the HID descriptor and HID report descriptor, a query response message that carries a HID identifier to the peer device, where the HID identifier is used to enable the peer device to identify the USB device as a HID device; and encoding and encapsulating, by the USB device, data to be sent to generate a HID packet, and sending the HID packet to the peer device, or receiving a HID packet from the peer device, and decapsulating and decoding the received HID packet, where the HID packet carries a data type and data usage manner information.
Abstract:
A method and a terminal for controlling switching of desktop container pages are provided, which are used to replace a conventional operation of moving a component based on a touch operation on an intelligent terminal. The method includes: obtaining, by a terminal, movement determination information when a component-based moving event is activated; identifying, by the terminal, a movement state of the terminal according to the movement determination information; and switching, by the terminal, a currently displayed desktop container page according to the movement state, and moving a component, on which the moving event is based, to a desktop container page displayed after the switching.
Abstract:
A method for protecting an electronic device, where the electronic device includes a control switch for controlling output of a power supply, and the method includes: detecting whether an exception event occurs, and if it is detected that an exception event occurs, generating a control signal for controlling the control switch; and controlling, based on the control signal, the control switch to disconnect an output channel of the power supply. Correspondingly, an embodiment of the present invention further discloses an electronic device. In embodiments of the present invention, effective shutdown can be implemented after an exception occurs on an electronic device, thereby eliminating a potential security risk that an abnormal chip of the electronic device is continuously electrified after the electronic device shuts down because of an exception event.
Abstract:
An antenna and a mobile terminal are disclosed that relate to the communications field. The antenna includes a ground cable and a feeder, where the feeder includes a low-frequency branch and a high-frequency branch; the low-frequency branch and the high-frequency branch have a common endpoint; the low-frequency branch is surrounded by the ground cable to form a coupled loading mode and an equivalent coupled feed loop antenna radiation mode; and the high-frequency branch is set outside the ground cable to complete a high-frequency monopole radiation mode. The mobile terminal includes a printed circuit board (PCB) and the antenna, and the antenna is printed on the PCB. An embodiment of the present invention resolves a problem of insufficient low-frequency bandwidth and insufficient high-frequency bandwidth in the prior art, effectively improves performance of the antenna, and can effectively disperse near-field energy to the PCB and the mobile terminal.