摘要:
An interface apparatus and method for interfacing between a selector and a plurality of vocoders in a mobile communication system includes a main processor contained in the selector; a transmitting/receiving frame tick generator for generating a transmitting/receiving frame tick every 20 msec, to be supplied to the main processor; a buffer operation adjustor for enabling and disabling a selected buffer out of 15 buffers according to a control signal received from the main processor; a plurality of buffers connected one by one to a plurality of vocoding modules, for operating according to the control of the buffer operation adjustor. The plurality of vocoders for coding and decoding a voice signal.
摘要:
An electrical outlet for automatically sensing an electrical device, a system for managing electric energy using the electrical outlet, and a method thereof are disclosed. The electrical outlet may include a plug connecting unit to which a plug of an electrical device including a radio frequency identification (RFID) tag is connected, an RFID reader for receiving information about the electrical device from the RFID tag, an electric energy measuring unit for measuring an amount of electric energy consumed by the electrical device, a controller for managing the received information about the electrical device and information about the measured amount of electric energy, and a communication unit for transmitting the information about the electrical device and the information about the amount of electric energy used to an electric energy management system.
摘要:
Provided is an apparatus and method for controlling legacy home appliances based on Zigbee wireless communication. The apparatus includes a home appliances control signal receiving unit for receiving a home appliances control signal from a user; a signal analyzing unit for analyzing the home appliances control signal and identifying a corresponding home appliance; a Zigbee coordinator for transforming the home appliances control signal into a Zigbee signal and transmitting the Zigbee signal to the identified home appliance; a Zigbee signal receiving unit for receiving the Zigbee signal from the Zigbee coordinator; an identification (ID) analyzing unit for analyzing the ID of the transmitted Zigbee signal; a signal transform unit for transforming the Zigbee signal into an infrared rays remote control signal; and an infrared rays signal transmitting unit for transmitting the infrared rays remote control signal to the infrared rays receiving unit.
摘要:
A channel allocation method of channels having different transmission speeds in a wavelength division multiplexing (WDM) system is provided. The channel allocation method in a multirate optical transmission system includes selecting a channel having the lowest transmission speed from not allotted channels, allotting the selected channel to the longest wavelength band of empty wavelength bands, and determining whether not allotted channels exist in order to repeatedly perform selecting the channel having the lowest transmission speed from the not allotted channels and allotting the selected channel to the longest wavelength band of the empty wavelength bands, until all the channels are allotted.
摘要:
A method for realizing, in a fiber amplifier with three stages of amplifiers, automatic gain control in which a constant gain is obtained when channels are varied, and automatic level control in which a constant output per channel is obtained when a light power is varied because of variations in span loss. A light power or another light power of a specific wavelength is monitored to determine when variations in these light powers take place, current values of pump laser diodes appropriate for an input is read from a lookup table, and pump laser diodes are driven. During this operation, a pump power of the first stage amplifier is constantly maintained, and those of the second or third stage amplifier are controlled.