Press SEL button again to enter sub menu and navigate to the CEA 608 Transport selection.Press SEL button to enter the sub menu and use the up and down arrow keys to navigate to the CEA 608 Settings.Use the up and down arrows to navigate to the Aux Data Settings menu.There are a variety of different formats for CEA 608 and these can be configured automatically or user selected from the CONFIG menu. Now the instrument will simultaneously decode CEA 708 DTVCC caption in one tile and the other tile will be decoding caption from CEA 608. Picture Display showing menu for Closed Caption decoding. Note: Auto mode will automatically select the closed caption present in the signal. Press the PICTURE button to dismiss the menu.Select CEA608 to allow decoding of the closed caption data within the picture display. Using the up and down arrows navigate to CC/Teletext Format and press right arrow to select sub menu.Select a different tile and press the PICTURE buttons to display another picture display.Select CEA708 to allow decoding of the DTVCC closed caption data within the picture display.Push and Hold the PICTURE button to enable the menu.Select one of the tiles (1,2,3 or 4) and press the PICTURE button.How to Configure Simultaneous Closed Caption Decoding The latest version of the WFM and WVR series firmware version 5.0.2 now supports the simultaneous decode of CEA 708 and 608 closed captioning, allowing the operator to monitor both data streams for compatibility. This increased capacity allows for the possibility of simultaneously providing captions in multiple languages and multiple reading levels. The DTVCC (Digital Television Closed Captioning) provides a maximum data rate of 9600bps. This captioning standard provides a wider range of captioning service, while still maintaining backwards compatibility with CEA 608, and is carried an ancillary data packet within the HD-SDI signal. For high definition (HD) a new standard was created for the addition of captions to the video signal which is standardized in CEA708. Alternatively in SD-SDI (Serial Digital Interface) this analog signal ma y be digitized as part of the active video or alternatively carried as an ancillary data packet within the video signal. The signal contains a clock and two data bytes which are transmitted on each field of the video signal (120 Bytes per second or 960 bits per second (bps)). This can be added as an analog signal to line 21 of the active NTSC signal as shown in Figure 1. CEA 608 standardizes the process of adding caption data to standard definition (SD) signal. There are a variety of methods to add captioning to the program material depending upon the video format.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |