144results about How to "Reduce repetitions" patented technology

In a wireless device monitoring system including a mobile telephone and an authentication apparatus, a controller of the authentication apparatus repeatedly executes a distance detection processing based on a received level of a received wireless signal and an authentication processing based on authentication data included in the received wireless signal continuously at a first communication interval T1 and a second communication interval T2, respectively, and outputs an alarm signal or executes a predetermined control processing when a true counterpart electronic apparatus is not present or when the true counterpart electronic apparatus is apart from the electronic apparatus by a distance longer than the predetermined threshold distance. When a first communication time T11 for the distance detection processing is shorter than a second communication time T12 for the authentication processing, the T1 and the T2 are set to satisfy T1<T2.

The phase locked loop frequency synthesizer, includes: an LC-tank circuit which includes an inductor and a variable capacitor in which the capacity changes depending on the input voltage; a group of fixed-value capacitors which is connected to the LC-tank circuit in parallel; a voltage control oscillating unit which outputs a signal with a frequency determined by the LC-tank circuit and the group of fixed-value capacitors; a phase control unit which generates an output current based on an error operator between a first signal with a divided frequency of a reference frequency and a second signal with a divided frequency of the frequency output from the voltage control oscillating unit; a fixed-value capacitor controlling unit which outputs a selection signal which determines the combination of the fixed-value capacitors to be connected to the LC-tank circuit in parallel based on a frequency dividing ratio setting signal including information about dividing ratio of the second signal, and controls the connection of the fixed-value capacitors selected from the group of fixed-value capacitors based on the selection signal to the LC-tank circuit in parallel; and a variable capacitor controlling unit which selects either one of a fixed bias voltage and the voltage obtained by converting the output current output from the phase control unit and inputs the selected voltage to the variable capacitor of the LC-tank circuit.

Disclosed is a method of producing xylitol using a hydrolysate containing xylose and arabinose prepared from byproducts of tropical fruit biomass and more precisely, a method of producing xylitol which includes the steps of producing xylose and arabinose by the pretreatment of tropical fruit biomass byproducts including coconut shell, palm shell and oil palm empty fruit bunch (OPEFB) via acid (0.2-5%) hydrolysis and an electrodialysis and an ionic purification; and producing xylitol with high yield based on repeated batch fermentation using a hydrolysate containing xylose and arabinose as a carbon source. In addition, the present invention relates to an active carbon produced by carbonization and activation of a hydrolysate remainder of a tropical fruit shell, the byproduct of xylose and arabinose production, at a certain temperature and a preparation method of the same.