Abstract: An audio signal processing method, includes acquiring a first distance between a current position and an initial position of a mobile device, and a second distance between the current position of the mobile device and a wearable device. Determining a first deflection angle according to the first distance, the second distance and the initial distance between the mobile device and the wearable device. Acquiring a second deflection angle of the wearable device reflecting a posture change. Determining relative position information between the mobile device and the wearable device according to the first deflection angle, the second deflection angle and the second distance and processing an audio signal based on the relative position information to obtain a playing audio played by the wearable device.

Abstract: The present disclosure detects and/or prevents power analysis side-channel attacks without requiring the use of external measurement devices. A first portion of field programmable gate array (FPGA) circuitry is configured to provide emulated hardware device circuitry and a second portion of the FPGA circuitry is configured to provide power monitoring circuitry. The emulated hardware device circuitry and the power monitoring circuitry are coupled to FPGA power distribution network circuitry. The power monitoring circuitry includes time-to-digital converter (TDC) circuitry that includes observation delay buffers to sample a clock propagation delay. Since the voltage supplied to the buffer circuitry affects the propagation delay, the TDC circuitry outputs a binary sequence representative of one or more power delivery parameters to the emulated hardware device circuitry.

Abstract: An intelligent locking device comprises a microprocessor, a locking element and a control button electrically connected to the microprocessor respectively. The locking element locks a removable HDD to a computer. The control button generates trigger signals in response to manual push thereon. When receiving the trigger signal, the microprocessor detects whether there is data transferring between the removable HDD and the computer, if there is data transferring, the microprocessor terminates data transferring and then sends a driving signal to the locking element; if not, the microprocessor directly sends a driving signal to the locking element. When receiving the driving signal, the locking element releases the lock between the removable HDD and the computer to permit the removable HDD to be safely ejected. Meanwhile, a removable HDD receiving system with the locking device and a method for preventing the removable HDD from being wrongly ejected from the receiving system are disclosed.

Abstract: An intelligent locking device comprises a microprocessor, a locking element and a control button electrically connected to the microprocessor respectively. The locking element locks a removable HDD to a computer. The control button generates trigger signals in response to manual push thereon. When receiving the trigger signal, the microprocessor detects whether there is data transferring between the removable HDD and the computer, if there is data transferring, the microprocessor terminates data transferring and then sends a driving signal to the locking element; if not, the microprocessor directly sends a driving signal to the locking element. When receiving the driving signal, the locking element releases the lock between the removable HDD and the computer to permit the removable HDD to be safely ejected. Meanwhile, a removable HDD receiving system with the locking device and a method for preventing the removable HDD from being wrongly ejected from the receiving system are disclosed.