Abstract: An information security method operable to be executed in an electronic device with modules, such as a calculating module, a first determining module, an extracting module, a logic operation module, and an adjusting module. The modules find out audio segments which are suitable for the concealing of copyright and other information by way of phase inversion of the original data as audio codecs are applied and build the concealable information into the data by way of a key.

Abstract: An information security method operable to be executed in an electronic device with modules, such as a calculating module, a first determining module, an extracting module, a logic operation module, and an adjusting module. The modules find out audio segments which are suitable for the concealing of copyright and other information by way of phase inversion of the original data as audio codecs are applied and build the concealable information into the data by way of a key.

Abstract: In a method for removing interferential signals of a mobile device, an original communication signal waveform of the mobile device is acquired. A differential signal waveform corresponding to each signal frame in a group is generated, and a DPPPV of the differential signal waveform is acquired. The differential signal is determined to be an interferential signal, in response to that the DPPPV is not less than a calculated differential threshold value, and a DNPPV at a target time point is not less than a preset ratio of the DPPPV. A signal interference section is determined and compensation values corresponding to the signal interference section is calculated, to generate a differential compensation waveform of the signal frame. An integrated differential compensation waveform of all signal frames and the original communication signal waveform are incorporated to obtain a processed signal waveform without interferential signals.

Abstract: In a method for removing interferential signals of a mobile device, an original communication signal waveform of the mobile device is acquired. A differential signal waveform corresponding to each signal frame in a group is generated, and a DPPPV of the differential signal waveform is acquired. The differential signal is determined to be an interferential signal, in response to that the DPPPV is not less than a calculated differential threshold value, and a DNPPV at a target time point is not less than a preset ratio of the DPPPV. A signal interference section is determined and compensation values corresponding to the signal interference section is calculated, to generate a differential compensation waveform of the signal frame. An integrated differential compensation waveform of all signal frames and the original communication signal waveform are incorporated to obtain a processed signal waveform without interferential signals.

Abstract: An energy management device manages a plurality of monitored devices distributed in a plurality of monitored areas. The energy management device determines whether a current time of each monitored area is during a monitored time of the energy management device. The energy management device acquires an area identifier and a body presence information from each of the monitored areas, and determines whether one or more monitored areas are under control and without body presence. If one or more monitored areas are under control and without body presence, the energy management device transmits one or more power-off commands to turn off the monitored devices located in the one or more monitored areas.

Abstract: An energy management device manages a plurality of monitored devices distributed in a plurality of monitored areas. The energy management device determines whether a current time of each monitored area is during a monitored time of the energy management device. The energy management device acquires an area identifier and a body presence information from each of the monitored areas, and determines whether one or more monitored areas are under control and without body presence. If one or more monitored areas are under control and without body presence, the energy management device transmits one or more power-off commands to turn off the monitored devices located in the one or more monitored areas.