DIGITAL TV RECEIVING SMART ANTENNA CONTROL SYSTEM AND CONTROLLING METHOD OF THE SAME
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Accused Products
Abstract
Disclosed is a digital TV smart antenna system and controlling method of the same, the system converges a smart antenna into an optimal reception by detecting a maximum signal power in a signal acquisition process for a fast acquisition performance and selectively assembling information such as signal power, multi-channel, SNR, and SER, and particularly, calculates signal power according to the antenna direction by fixing AGC as a specific value for detecting the maximum signal power.
15 Citations
54 Claims
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1-34. -34. (canceled)
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35. A digital television (DTV) receiver having an antenna, comprising:
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an antenna system forming an optimal antenna pattern by adjusting a beam width, gain, and frequency characteristic of the antenna according to an antenna control signal;
a demodulator demodulating a digital television (DTV) signal received from the antenna system and generating channel data for an optimal antenna pattern; and
an antenna controller receiving the channel data from the demodulator and generating the antenna control signal using the channel data, wherein the antenna controller acquires an antenna direction having a maximum signal power using a fixed auto gain control (AGC) value and tracks a direction of the antenna using the acquired antenna direction. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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42. A digital television (DTV) receiver having an antenna, comprising:
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an antenna system forming an optimal antenna pattern by adjusting a beam width, gain, and frequency characteristic of the antenna according to an antenna control signal;
a demodulator demodulating a digital television (DTV) signal received from the antenna system and generating channel data for an optimal antenna pattern; and
an antenna controller receiving the channel data from the demodulator and generating the antenna control signal using the channel data, wherein the channel data comprise at least one of auto gain control (AGC) information, demodulated I-channel data, phase-tracked I-channel data, forward error correction (FEC) error data, and a field sync signal. - View Dependent Claims (43, 44)
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45. An antenna system for use in a digital television (DTV) receiver, the antenna system comprising:
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an antenna receiving a digital television (DTV) signal; and
an antenna phase and gain controller forming an optimal antenna pattern by adjusting a beam width, gain, and phase of the antenna according to an antenna control signal, wherein the antenna control signal is generated by acquiring an antenna direction having a maximum signal power using a fixed auto gain control (AGC) value and by tracking a direction of the antenna using the acquired antenna direction. - View Dependent Claims (46)
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47. An antenna control system for controlling an antenna, comprising
a demodulator demodulating the signals received through the antenna and generating channel data from the received signals; - and
an antenna controller receiving the channel data from the demodulator, generating an antenna control signal using the channel data and controlling a direction of the antenna by using the antenna control signal, wherein the channel data include at least one of auto gain control (AGC) information, demodulated I-channel data, phase-tracked I-channel data, forward error correction (FEC) error data, and a field sync signal. - View Dependent Claims (48, 49, 50, 51, 52)
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53. An antenna control method comprising:
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receiving a digital television (DTV) signal through an antenna;
demodulating the received digital television (DTV) signal and generating channel data;
generating an antenna control signal using the channel data; and
continuously controlling an antenna direction according to the antenna control signal, wherein the antenna control signal is generated by acquiring the antenna direction having a maximum signal power using the channel data according to a fixed auto gain control (AGC) value. - View Dependent Claims (54)
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Specification