KR960006596A - Equalizer for American High Definition Television - Google Patents

Abstract

The equalizer in the high-definition television for the U.S. according to the present invention can converge more quickly at the time of channel switching. An integer equalization unit 400 which integerizes and outputs an equalization filtering signal provided from the equalization filter unit 100; A training signal processor 500 which receives only a training signal among the distorted original signals and outputs a training signal in a corrected state by removing a channel error component; Receiving an integer signal and a training signal respectively from the water purification unit 400 and the training signal processing unit 500, and outputs the training signal in response to the first selection signal, and the integer in response to the second selection signal The selector 600 further outputs a signal, and the equalization filter unit 100 removes and outputs noise remaining in the equalized filtered signal using the signal provided to the selector 600.

Description

Equalizer for American High Definition Television

As this is a public information case, the full text was not included.

Claims (2)

An equalization filter unit 100 which receives an original signal including an image signal and a training signal in a state distorted by a channel characteristic during transmission from a transmitter, and equalizes and outputs the input signal using a filter coefficient; An error calculator 200 that receives the equalized filtered signal from the equalization filter unit 100 and detects a channel error that is a difference between the distortion signal and the original signal, and a channel error provided from the error calculator 200. In the equalizer of a Gland Alliance High Definition Television (HDTV) including a filter coefficient updating unit 300 for outputting the filter coefficient updated by the above, the equalization filtering provided from the equalization filter unit 100 is provided. An integerizer 400 for integerizing and outputting a signal; A training signal processor 500 which receives only a training signal among the distorted original signals and outputs a training signal in a corrected state by removing a channel error component; Receiving an integer signal and a training signal respectively from the water purification unit 400 and the training signal processing unit 500, and outputs the training signal in response to the first selection signal, and the integer in response to the second selection signal And a selector 600 for outputting a signal, wherein the equalization filter unit 100 removes and outputs noise remaining in the equalized filtered signal using a signal provided to the selector 600. The error calculation unit 200 outputs a first selection signal when the channel error E is larger than a conventional installation, and on the contrary, outputs a second selection signal when the channel error converges to or below a predetermined installation. An equalizer of a high definition television for an American high-definition television, characterized in that it always outputs only the second selection signal irrespective of the magnitude of the channel error E in response to the channel diameter signal C inputted by the user. The first equalization filter unit of claim 1, wherein the equalization filter unit 100 equalizes and filters the input signal in the distorted state using a filter coefficient provided from the filter coefficient updating unit 300. 10); A second equalization filter part 12 for equalizing and filtering the signal provided from the selector 600 using the filter coefficient provided from the filter coefficient updater 300; Means 14 for receiving equalized filtered signals from the first and second equalized filter units 10 and 12, respectively, and summing the two equalized filtered signals to remove residual noise; The filter coefficient updating unit (500) provides equal filter coefficients to the first and second equalization filter units (10 and 12). ※ Note: The disclosure is based on the initial application.