Ground digital television receiver

Abstract

The invention discloses a ground digital television receiver, comprising an outer housing, a front panel, a rear panel, an antenna installed on the outer housing, a video output interface and an audio output unit which are installed on the rear panel, further comprising an integral signal decoding unit installed in the outer housing and an FLASH memory unit, a DDR storage unit, a tuner unit and a signal channel demodulation unit which are electrically connected with the integral signal decoding unit; the antenna is electrically connected with the tuner unit; the tuner unit is electrically connected with the signal demodulation unit; and the video output interface and the audio output interface are electrically connected with the integral signal decoding unit. The receiver receives television signals through the antenna, and the signals are processed by the tuner unit and the signal channel demodulation unit and then transmitted to the integral signal decoding unit, and various video and audio signals are generated after the signals are processed by the integral signal decoding unit and then transmitted to the corresponding video output interface and audio output unit. The receiver uses a single chip computer to decode in various encoding standards.

Description

technical field [0001] The invention relates to a wireless digital TV receiving device, in particular to a terrestrial digital TV receiver. Background technique [0002] Terrestrial Digital Multimedia TV / Handle Broadcasting (Terrestrial Digital Multimedia TV / Handle Broadcasting) is a TV broadcasting system that uses terrestrial broadcasting to transmit digital TV broadcasting signals. Among the digital TV terrestrial, cable and satellite transmission methods, the digital TV terrestrial transmission system has the most complex environment, and has attracted much attention because of its high technical requirements and wide audience. Terrestrial wireless digital TV broadcasting not only overcomes the shortcomings of analog wireless TV that are susceptible to interference, poor image quality, and ghosting, but also can transmit up to 8 sets of TV programs in one TV channel, which greatly improves the utilization of wireless spectrum. In August 2006, my country promulgated its ...

AI Technical Summary

Problems solved by technology

However, the receiver provides two separate decoding chip units for MPEG2 or AVS encoding, and the AVS SD / HD decoding unit decodes the AVS encoded signal and needs to be interactively transmitted to the MPEG2 SD / HD decoding unit through the HOST bus, and then MPEG2 The standard-definition / high-definition decoding unit outputs video signals and audio signals after signal processing, and the decoding process of AVS signals is too complicated; the receiver does not support the signals of the H.264 coding standard and the VC-1 coding standard, and the receiver Recording storage of channel programs is not supported

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