A digital cable broadcast receiver and a method for automatically processing caption data of various standards and types, is disclosed. The digital broadcast receiver includes: a demultiplexer for dividing a received broadcast stream into video data, audio data, supplementary information; a controller for determining whether caption data included in the video data is digital caption data or analog caption data on the basis of caption information included in the supplementary information, and outputting a control signal according to a result of the determining; a digital caption decoder for extracting and decoding digital caption data from the video data according to the control signal; and an analog caption decoder for extracting and decoding analog caption data from the video data according to the control signal.

Digital broadcast receiver and method for processing caption thereof

A method of decoding closed caption disparity data, involves a TV receiver receiving closed caption disparity data for a 3D display encoded as a sequence of frame interval/slope change pairs, with the frame interval representing a designated number of frames over which each linear function representing disparity is to be applied paired with a value indicating a change in slope from the slope of a preceding segment. A first segment in the sequence presumes a predetermined slope as a reference. A sequence of caption data packets specifies a closed caption display window containing closed caption text. The disparity value is used in each frame to determine a horizontal offset of left and right eye views of the CC display that establishes the closed caption display window's perceived z-axis position. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

Disparity data transport and signaling

A communication system may includes a source device to output video contents and a sink device to input the video contents, connected to the source device using a control transmission channel and a video transmission channel through which data is transmitted. The source device may include a first control data I/O unit, a first video data output unit, a video data retention unit, a contents list retention unit, an index image data retention unit and a first control unit. The sink device may include a second control data I/O unit, a second video data input unit, a video processing unit, and a second control unit.

Communication system, communication method, video output apparatus and video input apparatus

According to one embodiment receiving-unit is configured to receive a broadcast signal employing a first subtitle format capable of designating a display-position and executing a plurality of subtitle displays. The display-position-detecting-unit is configured to detect a display-position of a subtitle in accordance with subtitle information included in the broadcast signal received by the receiving-unit. The character-string-detecting-unit is configured to detect a character string of the subtitle in accordance with the subtitle information. The subtitle-generating-unit is configured to generate subtitle information in a second subtitle format in capable of executing a plurality of subtitle displays. The subtitle-generating-unit arranges white space characters as the subtitle from a start point of a display area of the subtitle, arranges the character string detected by the character-string-detecting-unit, and generates the subtitle information in the second subtitle format, to display the character string detected by the character-string-detecting-unit at the display-position detected by the display-position-detecting-unit.

Image processing apparatus

An apparatus and method for operating a closed caption are disclosed. The apparatus for operating a closed caption includes an MPEG video processor for receiving a digital broadcast signal, detecting video information and PSIP (Program and System Information Protocol) information and processing it; a DTVCC decoder for extracting DTVCC information and analog CC information from the video information detected in the MPEG video processor and decoding the DTVCC information; and an analog CC decoder for receiving the analog CC information from the DTVCC decoder and decoding it. In providing a DTVCC service according to ATSC standards, the best closed service is provided under a given condition when there is an error in a broadcast station.

Apparatus and method for operating closed caption of digital TV

A digital television signal receiver (20) processes a digital television signal and auxiliary information contained in the digital television signal regardless of whether the auxiliary information is analog auxiliary information (36) or digital auxiliary information (34) and produces a television display signal (44) suitable for displaying the processed auxiliary information In the case of the auxiliary information being closed caption information, the digital television signal receiver extracts and processes digital closed captioning information according to standard EIA-708 or extracts and processes analog closed caption information according to standard EIA-608 The television signal processing receiver thus allows the user the option of selecting a fallback method of obtaining captioning for a digital program signal if the digital program signal does not include digital closed captioning Thus, if a digital television signal does not include digital closed caption information, the digital television signal receiver automatically processes any analog auxiliary information and provides a television signal having closed caption information suitable for display

Khelan Maheschchandra Modi

Papers

Digital/analog closed caption display system in a television signal receiver