The present invention relates to a wireless power transmitter and method for detecting a RFID/NFC card. Disclosed in the present application is a wireless power receiver comprising: a power pickup unit configured to receive, in a power transfer phase, wireless power generated by magnetic coupling from a wireless power transmitter; and a communications/control unit configured to transfer, in a negotiation phase, a first end-of-power-transfer (EPT) packet to the wireless power transmitter for detecting an RFID/NFC card, and to detect the RFID/NFC card during a re-ping time secured on the basis of the first EPT packet, wherein the first EPT packet instructs requesting the removal of a power signal for a predetermined time. As the process for detecting communication cards, such as RFID or NFC, between the wireless power transmitter and receiver is clearly defined, such RFID/NFC cards can be protected against getting destroyed by the wireless power, and a stable wireless power transfer can be achieved.

Various systems and methods for disabling UAVs are presented. An interrogation system may transmit an identifier request message to a UAV. The interrogation system may receive, in response to the identifier request message, a response message that indicates a UAV identifier. The interrogation system may access one or more UAV identifier databases that relate UAV identifiers with airspace definitions. The interrogation system may retrieve from the one or more UAV identifier database systems an airspace definition corresponding to the UAV identifier. The interrogation system may determine that the UAV is to be disabled based on: a location of the UAV, a restricted airspace definition, and the airspace definition corresponding to the UAV identifier. The interrogation system may then transmit a disablement instruction message to the UAV based on the location of the UAV and the airspace definition corresponding to the UAV identifier.

Various systems and methods for disabling UAVs are presented. An interrogation system may transmit an identifier request message to a UAV. The interrogation system may receive, in response to the identifier request message, a response message that indicates a UAV identifier. The interrogation system may access one or more UAV identifier databases that relate UAV identifiers with airspace definitions. The interrogation system may retrieve from the one or more UAV identifier database systems an airspace definition corresponding to the UAV identifier. The interrogation system may determine that the UAV is to be disabled based on: a location of the UAV, a restricted airspace definition, and the airspace definition corresponding to the UAV identifier. The interrogation system may then transmit a disablement instruction message to the UAV based on the location of the UAV and the airspace definition corresponding to the UAV identifier.

A wireless communication device includes a signal generator supply a signal to an input node to which a power amplifier is connected. The power amplifier includes an inverter including a first transistor with a gate connected to the input node via a first signal path and a second transistor with a gate electrode connected to the input node via a second signal path. An output signal corresponding to the signal supplied to the input node is supplied from an output node between the first and second transistors. A filter is connected to the output node and outputs a filtered signal having a high frequency component removed. A bias application unit applies a first bias voltage to the first signal path and a second bias voltage to the second signal path. Levels of the bias voltages being set according to a direct current component in the filtered signal.

The present application discloses an interactive intelligent pet feeding device which belongs to the technical field of pet feeding devices, including a feeding device body, the feeding device body including a pet food feeding control device and a shake detection module, the pet food feeding control device being configured to realize quantitative feeding of pet food and prevent jamming of the pet food, the shake detection module being configured to detect the motion state of the feeding device body, the shake detection module being connected to a control module to implement data communication, and the control module implementing data communication with a mobile terminal through a wireless transmission module. The feeding device body further includes an upper casing, a lower casing provided below the upper casing, the upper casing and the lower casing being connected to form an inside hollow chamber, an upper part of the chamber being provided with a granary, a top lid being provided above the upper casing, and a feeding bowl being provided outside the lower casing. The device enable pets to obtain corresponding food according to the movement of pets, realize automatic pet feeding, and solve the problems in the prior art.

The present application discloses an interactive intelligent pet feeding device which belongs to the technical field of pet feeding devices, including a feeding device body, the feeding device body including a pet food feeding control device and a shake detection module, the pet food feeding control device being configured to realize quantitative feeding of pet food and prevent jamming of the pet food, the shake detection module being configured to detect the motion state of the feeding device body, the shake detection module being connected to a control module to implement data communication, and the control module implementing data communication with a mobile terminal through a wireless transmission module. The feeding device body further includes an upper casing, a lower casing provided below the upper casing, the upper casing and the lower casing being connected to form an inside hollow chamber, an upper part of the chamber being provided with a granary, a top lid being provided above the upper casing, and a feeding bowl being provided outside the lower casing. The device enable pets to obtain corresponding food according to the movement of pets, realize automatic pet feeding, and solve the problems in the prior art.

A system for communicating information about a drilling operation comprises a drill string comprising a bottom-hole assembly, a data transmission line operably coupled to the bottom-hole assembly to receive data relating to the drilling operation, and a wireless transmission system operably coupled to the data transmission line and configured to receive and relay the data from the data transmission line. The wireless transmission system comprises a wireless transmitter comprising a beam forming antenna array. Devices and methods relate to communicating information about a drilling operation.

A system for communicating information about a drilling operation comprises a drill string comprising a bottom-hole assembly, a data transmission line operably coupled to the bottom-hole assembly to receive data relating to the drilling operation, and a wireless transmission system operably coupled to the data transmission line and configured to receive and relay the data from the data transmission line. The wireless transmission system comprises a wireless transmitter comprising a beam forming antenna array. Devices and methods relate to communicating information about a drilling operation.

Provided are a data structure including a header area, and a payload area comprising data, a method of generating the data structure, and extracting information from the data structure. At least one of the header area and the payload area includes at least one sub-area in which one or more signal fields are included. At least one signal field among the signal fields includes information for signalling presence or absence of one or more information fields located at least partly in the data structure, the one or more information fields corresponding to the one or more signal fields.

Provided are a data structure including a header area, and a payload area comprising data, a method of generating the data structure, and extracting information from the data structure. At least one of the header area and the payload area includes at least one sub-area in which one or more signal fields are included. At least one signal field among the signal fields includes information for signalling presence or absence of one or more information fields located at least partly in the data structure, the one or more information fields corresponding to the one or more signal fields.