US 6,334,218 B1Granted

Device for receiving satellite broadcast and a receiving method therefor

AssigneeHandan Broadinfocom Co., Ltd.

InventorsKi-Won Jeong, Joong-Jeh Park, Min-Gu Kim, Jang-Hee Lee, Yong-Kook Lee

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Abstract

A satellite broadcast receiver comprises an antenna, a tuner, a modulator, a FEC decoder, a microprocessor, and an antenna driver. The antenna receives the satellite signal and the tuner tunes the satellite signal received by the antenna, and the modulator modulates the satellite signal tuned by the tuner into digital signal, the FEC decoder corrects a position error of the satellite antenna using the signal modulated by the modulator, and outputs a corresponding output signal, and the microprocessor receives the signal modulated by the modulator and the output signal of the error corrector, and outputs a control signal which controls the position of the antenna, and the antenna driver drives the antenna in accordance with the control signal of the microprocessor. The satellite broadcast receiver enables a user to detect satellites fast and see satellite broadcast conveniently.

A digital satellite broadcast receiver which comprises:

an antenna for receiving a satellite signal;
a tuner for tuning the satellite signal received by the antenna;
a demodulator which demodulates the satellite signal tuned by the tuner into digital signal;
an error corrector which corrects a position error of the satellite antenna using the signal demodulated by the demodulator, and outputs a corresponding output signal;
a microprocessor which receives the signal demodulated by the demodulator and the output signal of the error corrector, and outputs a control signal which controls the position of the antenna;
and
an antenna driver which drives the antenna in accordance with the control signal of the microprocessor, the antenna driver generating a pulse having a predetermined period and on which movement of the antenna is based, the pulse driving the antenna, the antenna driver including:
a control logic which transmits the control signal of the microprocessor, including:
a first buffer which receives a first signal from the microprocessor,
a first gate driver which is connected to the first buffer and transmits the first signal,
a first switching element which receives the first signal from the first gate driver and switches in accordance with the transmitted first signal,
a second switching element which receives the first signal from the first gate driver and switches in accordance with the transmitted first signal,
a second buffer which receives a second signal from the microprocessor,
a second gate driver which is connected to the second buffer and transmits the second signal,
a third switching element which receives the second signal from the second gate driver and switches in accordance with the transmitted second signal, and
a fourth switching element which receives the second signal from the second gate driver and switches in accordance with the transmitted second signal;
a motor for driving the antenna in accordance with the control signal of the microprocessor received from the control logic;
and
a power supply which supplies the power to the motor.

16 more elements

Abstract

Claims5