Abstract: A wireless communication system, apparatus and a method for compensating offset using the same are disclosed, in which offset due to latency in a power save mode is compensated. The wireless communication apparatus includes a frequency matched unit for compensating offset due to latency that may occur during communication between the wireless communication apparatus and external equipment. The frequency matched unit adds a predetermined time to a clock value of a system clock if power save mode is transited to normal mode. Thus, the offset generated can efficiently be compensated if the power save mode is transited to the normal mode.

Abstract: A wireless communication system, apparatus and a method for compensating offset using the same are disclosed, in which offset due to latency in a power save mode is compensated. The wireless communication apparatus includes a frequency matched unit for compensating offset due to latency that may occur during communication between the wireless communication apparatus and external equipment. The frequency matched unit adds a predetermined time to a clock value of a system clock if power save mode is transited to normal mode. Thus, the offset generated can efficiently be compensated if the power save mode is transited to the normal mode.

Abstract: A wireless communication apparatus and a method for compensating offset using the same are disclosed, in which offset due to latency in a power save mode is efficiently compensated. The wireless communication apparatus includes a frequency matched unit for compensating offset due to latency that may occur during communication between the wireless communication apparatus and an external equipment. The frequency matched unit adds a clock value corresponding to predetermined frames to a clock value of a system clock if any one of a hold mode, a sniff mode, or a park mode is transited to a normal mode. Thus, the offset generated in the frames can efficiently be compensated if the hold mode, the sniff mode or the park mode is transited to the normal mode.

Abstract: A wireless communication apparatus and a method for compensating offset using the same are disclosed, in which offset due to latency in a power save mode is efficiently compensated. The wireless communication apparatus includes a frequency matched unit for compensating offset due to latency that may occur during communication between the wireless communication apparatus and an external equipment. The frequency matched unit adds a clock value corresponding to predetermined frames to a clock value of a system clock if any one of a hold mode, a sniff mode, or a park mode is transited to a normal mode. Thus, the offset generated in the frames can efficiently be compensated if the hold mode, the sniff mode or the park mode is transited to the normal mode.

Abstract: A digital-to-analog (D/A) converting apparatus for converting digital data to an analog signal is provided. Specifically, the apparatus contains a sampling rate converting circuit, an interpolator, a digital sigma-delta demodulation circuit, and an analog D/A converter. The converting circuit inputs and converts the digital data into sampled digital data. Then the interpolator interpolates the sampled digital data to produce interpolated data. Also, the interpolator has an infinite impulse response (IIR) filter which performs an IIR filtering operation based on the sampled digital data to produce the interpolated data. The demodulation circuit inputs the interpolated data, performs a sigma-delta demodulation operation on the interpolated data, and outputs corresponding demodulated data. Then, the analog D/A converter converts the demodulated data to the analog signal. By using the interpolator and the demodulation circuit, the structure of the converting apparatus is relatively simple.