Vertical deflection device of high definition television

Claim 1

A method for generating a vertical sweep signal for use in a high definition television, comprising the steps of: generating vertical sync signals for application to a CRT of the high definition television; applying said vertical sync signals and clock signals to controller means and said controller means counts said clock signals for a period of said vertical sync signal including the steps of, dividing first periods of said vertical sync signals into a plurality of time intervals for subsequent quantization, converting said plurality of time intervals of said vertical sync signals into digital data, wherein the digital data represents a corrected vertical sweep signal to be applied to the CRT of the high definition television by an input bus, storing said digital data in non-volatile memory means, and outputting said digital data from said non-volatile memory means to an output bus; generating a test, vertical sweep, signal of analog form and applying said test, vertical sweep, signal to a video input terminal of said high definition television for display on said CRT; detecting an image of the test sweep signal displayed on said CRT; outputting an analog signal corresponding to the test sweep signal; digitizing the analog signal corresponding to said test sweep signal to produce digital data; identifying the digital data from said step of digitizing; outputting information derived from the identified data to said non-volatile memory means of said controller means; retrieving digital data from said memory means, and supplying the digital data to the output bus in synchronism with the vertical sync signals; converting the digital data in the output bus which is synchronized with said vertical sync signals directly into an analog form of a corrected vertical sweep signal; and applying said analog form of a corrected vertical sweep signal directly to a vertical deflection coil of said CRT as a vertical deflection current which constantly flows to said CRT when said vertical sync signals vary.

Claim 2

A method for generating a vertical sweep signal for use in a high definition television, comprising the steps of: generating vertical sync signals for application to a CRT of the high definition television; applying said vertical sync signals and clock signals to controller means and said controller means counts said clock signals for a period of said vertical sync signal including the steps of, dividing first periods of said vertical sync signals into a plurality of time intervals for subsequent quantization, converting said plurality of time intervals of said vertical sync signals into digital data, wherein the digital data represents a corrected vertical sweep signal to be applied to the CRT of the high definition television by an input bus, storing said digital data in non-volatile memory means, and outputting said digital data from said non-volatile memory means to an output bus; generating a test, vertical sweep, signal of analog form and applying said test, vertical sweep, signal to a video input terminal of said high definition television for display on said CRT; detecting an image of the test sweep signal displayed on said CRT; outputting an analog signal corresponding to the test sweep signal; digitizing the analog signal corresponding to said test sweep signal to produce digital data; identifying the digital data from said step of digitizing; outputting information derived from the identified data to said non-volatile memory means of said controller means; retrieving digital data from said memory means, and supplying the digital data to the output bus in synchronism with the vertical sync signals; converting the digital data in the output bus which is synchronized with said vertical sync signals directly into an analog form of a corrected vertical sweep signal; and applying said analog form of a corrected vertical sweep signal directly to a vertical deflection coil of said CRT as a vertical deflection current which constantly flows to said CRT when said vertical sync signals vary.