How to Determine the Subchannel Language of the Selectable Subtitle Signal of the Viewer

摘要

The present invention relates to a subchannel language discrimination method for a viewer selectable caption signal, and more particularly, to a method for receiving a viewer selectable caption broadcasting in which caption signals are transmitted on one scanning line for every field of a television signal, Detecting an even-numbered field by detecting a vertical synchronization signal; Detecting presence or absence of a caption signal on the detected field; Checking whether a control code or a character code is detected based on the caption data extracted from the caption signal; And a step of discriminating the character code value of the caption data and determining the language if the character code is a character code,;Therefore, in the present invention, the language type of the character code received through the subchannel can be determined.