Broadcast receiver and 3D subtitle data processing method thereof

#The present invention relates to a broadcast receiver and a three dimensional (3D) subtitle data processing method thereof, and more particularly to a broadcast receiver for receiving 3D subtitle data and processing the received 3D subtitle data in consideration of either a display condition of a 3D video display device or an effect intended by transmission of subtitle data, and a method for processing the 3D subtitle data.

#Generally, a three dimensional (3D) image (or a stereoscopic image) provides a user's eyes with a stereoscopic effect using the stereoscopic visual principle. A human being feels both near and far through a binocular parallax caused by a distance between their eyes spaced apart from each other by about 65 mm, such that the 3D image enables both right and left eyes to respectively view associated planar images, resulting in the stereoscopic effect and the perspective effect.

#The above-mentioned 3D image display method may be classified into a stereoscopic scheme, a volumetric scheme, a holographic scheme, etc. In case of using the stereoscopic scheme, the 3D image display method provides a left view image to be viewed by the left eye and a right view image to be viewed by the right eye, such that the user's left eye views the left view image and the user's right eye views the right view image through either polarization glasses or a display device, resulting in recognition of the 3D image effect.

#The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the principle of the invention.

#In the drawings:

#FIG. 1 shows a syntax structure of an extended Display Definition Segment (DDS) acting as extended subtitle display information according to one embodiment of the present invention.

#Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The detailed description, which will be given below with reference to the accompanying drawings, is intended to explain exemplary embodiments of the present invention, rather than to show the only embodiments that can be implemented according to the present invention.

#Prior to describing the present invention, it should be noted that most terms disclosed in the present invention are defined in consideration of functions of the present invention and correspond to general terms well known in the art, and can be differently determined according to intention of those skilled in the art, usual practices, or introduction of new technologies. In some cases, a few terms have been selected by the applicant as necessary and will hereinafter be disclosed in the following description of the present invention. Therefore, it is preferable that the terms defined by the applicant be understood on the basis of their meanings in the present invention.

#The 3D image display method includes a stereoscopic imaging scheme in which two view points are considered and a multi-view imaging scheme in which three or more view points are considered. In contrast, a single view image scheme shown in the related art may also be referred to as a monoscopic image scheme.