TH23798A - Wavefront detectors in a convection circuit for signals with fixed sidebars. - Google Patents

Abstract

A television tuner to be used with the signal in an HDTV that is sent out as a fixed sidebar (VSB) signal with a single-dimensional set of clusters. It consists of the first convolution modulator (18), the equalizer (20) and the second convolution modulator (22, 30, 62), the multisector quantitative circuit (50, 66). That serves to set the number of the higher resolution sequentially Will be used in conjunction with the equalizer operation to achieve invisible equalization. There is no need for a "procession" signal. A second convolution circuit consists of a wave front detector (30), one signal slowing down input (312) and one signal input (312). The quantified inputs (310) are combined to be multiplexed signals (316) and unquoted and quantified inputs (310) to the unquoted inputs (310). Slowed down, one symbol (314) is merged into multiplicated signals (318), where these signals generated by multiplication are summed up ( 320) to produce an output signal that is an error in front of the wavelength of that lead signal.

Claims (7)

1. In a system for persistent sidebar video signal (VSB) that is classified as a single-dimensional set of data symbols. To replace digital image data And is under the display of convection signal compensation Which the finished machine will consist of A convection modulation circuit (22,30) to shift the received VSB signal towards the base band and frontal detectors (32). Input for receiving the VSB signal with a frequency near the base band. A quantifier (310) that responds to the incoming VSB signal to generate a quantified VSB signal. Symbol delay circuit (312,314) for slowing down the incoming VSB signal. And for delaying the signal that has been given such volume A first multiplier (316) responding to the said quantified VSB signal. And connect the signal that has been decelerated from the said delay cycle To create the first signal The second multiplier (314) responds to the incoming VSB signal. And connect the signal that has been quantified and slowed down the symbol From the aforementioned deceleration circuit to generate a second signal and A concentrator to combine the offset signals of one signal. And second as mentioned To generate a signal representing the tidal up 2. The fulfillment of claim 1 where the incoming VSB signal represents the true component excluding the imaginary component. 3. The machine is completed according to claim 1 and continues to be accompanied by Interval adjustment circuit to provide a symbolic clock signal corresponding to the transmitter clock signal, so that the incoming signal to the wave front detector shows the interval fixation. 4. The machine is completed according to claim 1, and also includes the next A modulator equal to that of a signal (20) with an inputs for receiving the VSB signal being output, the output connected to such a convolution circuit. And the control input for receiving the control signal as a function of the said error signal. 5. The machine is completed in accordance with Clause 4, and also includes further. Auxiliary carrier modulator (18) with an input for receiving the output VSB signal and the output that is connected to the inputs of the equalizer. 6. The instrument completes claim 1 where the incoming VSB signal will be an N-level VDB signal and the aforementioned equalizer will show the N-quantization level. 7. The machine completes claim 1, where the deceleration circuit will show one delay of the symbol.