Abstract:
An interactive method for communication with a smart mobile device and an interactive communication system using the same are provided. The interactive communication system comprises an external device and a smart mobile device. The external device comprises a microprocessor circuit and an AC magnetic emitter. The microprocessor circuit is for encoding specific data into an encoded signal. The AC magnetic emitter is for converting the encoded signal into an AC magnetic signal. The smart mobile device comprises an E-compass sensor. In addition, the smart mobile device stores a specific application program for acquiring a magnetic variation of the E-compass sensor. When the magnetic variation of the E-compass sensor is greater than a threshold variation, the AC magnetic signal is decoded through the specific application program to obtain the specific data.
Abstract:
A wireless charging circuit for power bank and a power bank thereof are provided in the present invention. The wireless charging circuit includes a boost DC to DC converter, a unidirectional conductive element and a wireless power converter. The input terminal of the boost DC to DC converter is coupled to the battery to receive the battery voltage. The output terminal of the boost DC to DC converter outputs a converted DC voltage. The first terminal of the unidirectional conductive element is coupled to the battery to receive the battery voltage. The input terminal of the wireless power converter is coupled to the second terminal of the unidirectional conductive element. When the wireless charging circuit performs the detection for the wireless power receiver, the wireless power converter disables the boost DC to DC converter.
Abstract:
A system for page detection using light attenuators is applied in a book to detect an opened page of the book. The book has N pages and each page has a page detection area in which at most M light attenuators are installed in each page detection area. A light source passes through the at most M light attenuators for attenuating intensity of the light source. M light sensing devices are installed in an area of the book that corresponds to the page detection area. The M light sensing devices are used to detect attenuated intensities of the light source. A controller is connected to the M light sensing devices for detecting the opened page based on a ratio of the intensities of the light source detected by the M light sensing devices on each page.
Abstract:
An interactive photovoltaic device and an interactive photovoltaic system are provided. The interactive photovoltaic device communicates with a mobile device without any external power and battery. The mobile device has a display panel. The interactive photovoltaic device includes a case, a solar panel, an optical signal receiver and a control circuit. The solar panel is disposed on a first area of a bottom of the case. The optical signal receiver is disposed on a second area of the bottom of the case. When the mobile device executes interactive software and the interactive photovoltaic device is disposed on the display panel of the mobile device, the interactive photovoltaic device receives display panel light through the solar panel to enable the control circuit, and the control circuit receives an optical signal through the optical signal receiver, and decodes the optical signal to obtain an interactive instruction inputted by a user.
Abstract:
An expandable device for wireless audio input is provided in the present invention. The expandable device for wireless audio input is compatible with an audio provider, wherein the audio provider is used for converting an audio to a wireless signal to output the wireless signal. The expandable device for wireless audio input is used for outputting an audio signal to an audio output device, wherein, the audio output device includes a first audio jack. The expandable device for wireless audio input includes a first audio jack plug, a wireless receiver and a second audio jack. The first audio jack plug is used for outputting a first audio signal. The wireless receiver receives the wireless signal outputting from the audio provider and converts the wireless signal into the first audio signal to transmit to the first audio jack plug. When a second audio signal is inputted from the second audio jack plug, the second audio signal is provided to the first audio jack plug.
Abstract:
A relaxation oscillator is provided in the present invention. The relaxation oscillator includes a R-S latch, a first delay circuit and a second delay circuit. The input terminal of the first delay circuit is coupled to the Q output terminal of the R-S latch, and the output terminal of the first delay circuit is coupled to the reset terminal of the R-S latch. The input terminal of the second delay circuit is coupled to the inversion Q output terminal of the R-S latch, and the output terminal of the second delay circuit is coupled to the set terminal of the R-S latch. When the input terminal of the first delay circuit inputs a first logic voltage, after a delay time, the output terminal of the first delay circuit outputs a second logic pulse. When the input terminal of the second delay circuit inputs the first logic voltage, after the delay time, the output terminal of the second delay circuit outputs the second logic pulse.
Abstract:
An ultra-low power wakeup circuit device includes a keyboard, a key scan circuit, a storage unit, and a comparator unit. The key scan circuit sequentially outputs scanning signals from the first scan line to N-th scan line for acquiring N key scan data. The key scan circuit performs an XOR operation on the N key scan data to generate a current key scan data. The storage unit is connected to the key scan circuit for receiving the current key scan data and storing the current key scan data as a previous key scan data. The comparator unit is connected to the key scan circuit and the storage unit for comparing the current key scan data with the previous key scan data. When the current key scan data is different from the previous key scan data, the comparator unit generates a wakeup signal.
Abstract:
A method for unlocking a door, a method for renting asset and a system thereof are provided in the present invention. The door includes an audio receiver, and the method includes the steps of: storing a unlock sequence into a mobile device; performing a audio modulation to generates a audio modulation voiceprint signal, wherein the frequency range of the audio modulation voiceprint signal is in the audio frequency; playing the audio modulation voiceprint signal by using the speaker of the mobile device; when the audio receiver receives the audio modulation voiceprint signal, the method further includes: performing a audio demodulation to obtain the unlock sequence; and determining whether the door is unlock or not according to the unlock sequence.
Abstract:
The present invention relates to an apparatus and a method for interacting amusement. The apparatus includes an acoustic receiver, a decoder and an interaction generating apparatus. The acoustic receiver receives an external acoustic wave signal and transfers the external acoustic wave signal into an acoustic signal. The decoder receives the acoustic signal. When the external acoustic wave signal has a high-frequency modulation signal, the decoder decodes the high-frequency modulation signal into a complete packet message according to a specific decoding procedure. The interaction generating apparatus receives the complete packet message, and generates an interaction according to the message.
Abstract:
A radio frequency identification integrated circuit for reducing pin counts and an RFID providing method thereof are provided in the present invention. The radio frequency identification integrated circuit includes a first IO pin, a second IO pin and a third IO pin. The method includes determining whether the coil is coupled to the first IO pin, the second IO pin and the third IO pin when the RFID IC is enabled; and determining the identification according to the voltage status of the non-coupled pin and the pins coupled to the coil.