Abstract: One wireless communication device includes a transmitter circuit and a control circuit, wherein the control circuit sets a request to send (RTS) frame, and controls the transmitter circuit to transmit the RTS frame via at least one channel excluding a preamble punctured channel. Another wireless communication device includes a transmitter circuit and a control circuit, wherein the control circuit sets an RTS frame, and controls the transmitter circuit to transmit the RTS frame via a plurality of channels including the preamble punctured channel.

Abstract: One wireless communication device includes a transmitter circuit and a control circuit, wherein the control circuit sets a request to send (RTS) frame, and controls the transmitter circuit to transmit the RTS frame via at least one channel excluding a preamble punctured channel. Another wireless communication device includes a transmitter circuit and a control circuit, wherein the control circuit sets an RTS frame, and controls the transmitter circuit to transmit the RTS frame via a plurality of channels including the preamble punctured channel.

Abstract: A wireless communication terminal including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from an AP. The controller is coupled to the wireless transceiver, and is operable to configure the wireless communication terminal to operate as a non-AP STA, and transmit a MU PPDU with a single RU spanning a partial bandwidth of the MU PPDU to the AP via the wireless transceiver. In particular, the partial bandwidth excludes a frequency band of a primary channel.

Abstract: A negative pressure backflow prevention apparatus includes a base having one end formed of at least one air inlet, a supporting portion and a first connecting portion arranged at predefined locations of the base; the least one air inlet penetrating into another end of the base; and a sealing member having one end formed of a second connecting portion and another end formed of an air outlet; and the second connecting portion and the first connecting portion connected to each other in order to seal another end of the air inlet; the supporting portion penetrating through the air outlet and attached onto the air outlet and the supporting portion. Accordingly, the negative pressure backflow prevention apparatus of the present invention is able to achieve the effects of preventing deformations of the apparatus and preventing negative backflows.

Abstract: A safety device includes a base and a cap pivotably connected to the base at one end thereof. The cap has a watch on a top thereof and a protrusion extending from an underside thereof. A pressurized air container has its sealed end inserted in an opening of the protrusion and a distal end of the container extends from the cap. A passage is defined in the protrusion and a cylindrical member is movably received. The cylindrical member includes a probe which is located in the chamber of the protrusion and beside the sealed end of the container. An inflatable piece is received in the base and has an inlet member which is engaged with the chamber defined in the protrusion. A link is pivotably connected between the cylindrical member and the cylindrical member such that when pivoting the container, the link moves the cylindrical member to let the probe break through the sealed end of the container such that the inflatable piece is inflated.