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Details
Inventors: Jung, Gwon Sool;
Assignee: LG Electronics Inc. (Seoul, KR)
Primary Examiner: Miller; John
Assistant Examiner: Natnael; Paulos
Attorney, Agent or Firm: Birch, Stewart, Kolasch & Birch, LLP

The combined TV receiver can receive and process an analog broadcasting signal as well as a digital broadcasting signal, and includes a controller determining whether a channel selected by a user is a digital broadcast or an analog broadcast. The controller generates station selection data on the selected channel and a control signal pertinent to the determination. A tuner receives the station selection data and tunes to a broadcasting signal associated with the selected channel, out of signals received through an antenna. A switch unit forwards the broadcasting signal tuned at the tuner, in response to the control signal, to either an analog broadcasting processor or a digital broadcasting processor. An AGC (auto-gain controller) receives a gain signal either from the analog broadcasting processor or from the digital broadcasting processor, and adjusts a signal gain of the broadcasting signal tuned at the tuner, thereby allowing reception of both analog and digital signals.

DETAILED DESCRIPTION Accordingly, the present invention is directed to a combined TV receiver which can receive and process an analog broadcasting signal as well as a digital broadcasting signal that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention.
The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, the digital/analog TV receiver includes a controller for determining a channel of user's selection of being of a digital broadcasting or an analog broadcasting, and generating a station selection data on the channel and a control signal pertinent to the determination, a tuner for receiving the station selection data and tuning to a broadcasting signal pertinent to the channel out of signals received through an antenna, an IF switch unit for selecting a direction of forwarding the broadcasting signal tuned at the tuner in response to the control signal, an analog broadcasting processor for demodulating the broadcasting signal selected at the IF switch unit into an audio signal and a video signal, a digital broadcasting processor for decoding the broadcasting signal selected at the IF switch unit into digital broadcasting information, and an AGC(auto-gain controller) for receiving a gain signal either from the analog broadcasting processor or from the digital broadcasting processor and adjusting a signal gain of the broadcasting signal tuned at the tuner.
It is foreseen that the digital TV broadcasting systems will use channels the present analog broadcasting systems do not use, frequently



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