Abstract: Disclosed is a chart conversion system and method using metadata. The chart conversion system includes: a metadata management module for storing a chart rule that includes chart components for representing a chart, a chart runtime for implementing the chart rule, and chart type information added in the form of metadata; an extraction module for extracting the metadata of the chart type information from the metadata management module; and a control module for calculating the variation of each of the chart components and for combining the calculated variation with the metadata of the chart type information, which is extracted from the extraction module.

Abstract: Disclosed is a method and apparatus for transmitting and outputting data in voice communication over a traffic channel. The apparatus includes: a signal generator for generating a low frequency signal corresponding to a key signal inputted during voice communication; a signal synthesizer for synthesizing the low frequency signal and a voice signal; a radio communication unit for transmitting the synthesized signal over the traffic channel; a signal separator for separating a low frequency signal from a signal received and processed by the radio communication unit; and a data output unit for detecting a frequency of the separated low frequency signal and outputting data indicated by the detected frequency.