Patent ID: 7576702

Claim:
An automatic feedback adjustment device for a digital antenna, comprising: a digital antenna unit; a trafficator connected to the digital antenna unit to retrieve actual direction and elevation angle of the digital antenna unit and, based on which, generates a direction signal; a tuner connected to the digital antenna unit for selecting a channel to receive a digital video/broadcasting signal from a transmission terminal and supplies a transmission signal; a demodulator connected to the tuner for controlling the tuner selecting the channel to convert the transmission signal from the tuner into a digital video image signal and a signal intensity quality signal and output the digital video image signal and the signal intensity quality signal; an antenna direction driver unit connected to the digital antenna unit for driving adjustment of direction and elevation angle of the digital antenna unit; a secondary controller connected to the trafficator, the demodulator and the antenna direction drive unit to receive, according to the direction signal from the trafficator, the video image signal and signal intensity quality signal from the demodulator and convert the video image signal into a teleview image data, which is output together with the signal intensity quality signal and the direction signal, the secondary controller issuing at the same time, a control signal to the demodulator, based on which control signal, control over the demodulator and the tuner is performed, the secondary controller issuing a drive control signal to the antenna direction drive unit to control the antenna direction drive unit for driving the direction and the elevation angle of the digital antenna unit; and a primary controller connected to a network, a storage device and the secondary controller to receive data of optimum direction and elevation angle for the antenna receiving signals from transmission terminal through the network and the storage device and issuing an antenna control signal to the secondary controller to serve as a basis for adjusting the direction and the elevation angle of the digital antenna unit, the primary controller converting the teleview image data and the signal intensity quality signal and the direction signal received from the secondary controller into video data and signal quality data, direction data that are stored in the storage device.