Abstract: Described are an encoding method and system for ROAs. The encoding method includes the following steps: given a set of authorized IP prefixes an AS which are maintained with an IP address trie. By specifying a sequence of hanging levels on the IP address trie, it is divided into a set of non-overlapping sub-trees, each rooted at a hanging level. A node on a hanging level uniquely defines a sub-tree rooted at it, whose prefix can be encoded as the identifier of this sub-tree. All authorized prefixes covered by a sub-tree can be encoded into a bitmap of 2h bits, where h is the height of this sub-tree. Thus, the set of authorized IP prefixes of an AS is encoded into several tuples (identifier, bitmap).

Abstract: Disclosed herein are a controller device and a method of detecting user inputs. According to at least one embodiment, an electronic controller device includes first and second button components, a processing circuit and a communication interface. The first and second button components respectively include first and second touch pads. The first and second button components are configured to register click operations by respectively first and second fingers of a user. The first and second touch pads are configured to register touch operations by fingers. The processing circuit is configured to convert the click operations and the touch operations into input signals. The communication interface is configured to transmit the input signals to at least one external device.

Abstract: A control device is provided having multiple buttons with touch sensors attached on top of the buttons. The buttons and touch sensors may detect signals of finger movements and/or gestures. The detected signals may be used to control various operations in various operation modes of the controller. The control device may interface with multiple devices.

Abstract: A drum-type wide-frequency piezoelectric power generation apparatus may include a protective layer pasted on piezoelectric layer through epoxy resin glue or other conductive adhesives. The piezoelectric layer is pasted on the base layer through epoxy resin or other conductive adhesives. One side of piezoelectric vibrators are fixed on the end cap “a” through the clamp and are away from a first permanent magnet. The end cap “a” provided an octagonal boss “a”. There are bosses “b”, “c”, “d” on the surface of boss “a”. The four piezoelectric vibrators are fixed on four symmetry planes of bosses “a”, “b”, “c”, “d”. The four planes of end cap “a” are fixed on piezoelectric vibrator corresponding to four straight slots respectively, which are used to fix the clamp. The auxiliary magnet is closer to the center of end cap “b” than second permanent magnet. Each of second permanent magnets has a corresponding auxiliary magnet. The first second permanent magnets are mutually exclusive.

Abstract: Disclosed herein are a controller device and a method of detecting user inputs. According to at least one embodiment, an electronic controller device includes first and second button components, a processing circuit and a communication interface. The first and second button components respectively include first and second touch pads. The first and second button components are configured to register click operations by respectively first and second fingers of a user. The first and second touch pads are configured to register touch operations by fingers. The processing circuit is configured to convert the click operations and the touch operations into input signals. The communication interface is configured to transmit the input signals to at least one external device.

Abstract: A drum-type wide-frequency piezoelectric power generation apparatus may include a protective layer pasted on piezoelectric layer through epoxy resin glue or other conductive adhesives. The piezoelectric layer is pasted on the base layer through epoxy resin or other conductive adhesives. One side of piezoelectric vibrators are fixed on the end cap “a” through the clamp and are away from a first permanent magnet. The end cap “a” provided an octagonal boss “a”. There are bosses “b”, “c”, “d” on the surface of boss “a”. The four piezoelectric vibrators are fixed on four symmetry planes of bosses “a”, “b”, “c”, “d”. The four planes of end cap “a” are fixed on piezoelectric vibrator corresponding to four straight slots respectively, which are used to fix the clamp. The auxiliary magnet is closer to the center of end cap “b” than second permanent magnet. Each of second permanent magnets has a corresponding auxiliary magnet. The first second permanent magnets are mutually exclusive.

Abstract: Implementations herein relate to a bistable piezoelectric cantilever vibration energy generator based on spherical composite structure with partial separation of different layers that includes a beam bracket and a shell. The shell is spherical, the bottom of the shell has a circular opening. The beam bracket and the shell are fixed to the base respectively. Vibration of the beam bracket can cause deformation of the piezoelectric cantilever beam, the piezoelectric cantilever beam generates electrical energy using the piezoelectric effect during deformation. The bistable piezoelectric cantilever vibration energy generator further includes twenty-five piezoelectric oscillator structures, and the lengths of the cantilever beam in the same layer are different such as to form a wide resonance frequency domain and to substantially increase power generation.

Abstract: Implementations herein relate to a bistable piezoelectric cantilever vibration energy generator based on spherical composite structure with partial separation of different layers that includes a beam bracket and a shell. The shell is spherical, the bottom of the shell has a circular opening. The beam bracket and the shell are fixed to the base respectively. Vibration of the beam bracket can cause deformation of the piezoelectric cantilever beam, the piezoelectric cantilever beam generates electrical energy using the piezoelectric effect during deformation. The bistable piezoelectric cantilever vibration energy generator further includes twenty-five piezoelectric oscillator structures, and the lengths of the cantilever beam in the same layer are different such as to form a wide resonance frequency domain and to substantially increase power generation.

Abstract: A control device is provided having multiple buttons with touch sensors attached on top of the buttons. The buttons and touch sensors may detect signals of finger movements and/or gestures. The detected signals may be used to control various operations in various operation modes of the controller. The control device may interface with multiple devices.