These do not decode the audio signal just convert between the electrical signal and the optical signal. This converter supports Both PCM and Bitstream signals. This Converter enables a coaxial audio signal to be converted to Toslink Digital Audio, for Home Theater Surround Sound Applications or Computer Musical Systems. The high bandwidth capability supports a wide range of PC and HDTV resolutions. If you dont use a box then connect the cable to the RF input. If you have a cable box then connect it to the TV with the best av connection that the box and TV share. You will probably not get high definition so the picture will look pretty lousy. It allows you to connect the VGA (HD-15 connector) output from the PC to the digital HDMI input of the latest HD ready plasma, LCD, LED or DLP TV. The TV will take care of any analog to digital conversion that may be needed.
In addition to the US and Canada, the NTSC system was or is used in Central America, the Caribbean, parts of South America, and in several Asian countries, including Japan. The system was updated in 1953 to accommodate the change from black-and-white to color television. This was done to resolve differences between the various TV companies and standardize the system.
NTSC stands for the National Television System Committee, which was the group that introduced the original standards for analog TV transmission in the USA back back in the early 1940s. NTSC is inferior to ATSC because it doesn’t deliver HDTV picture quality or the widescreen format, and the audio quality is also inferior. It has largely been phased out in favor of digital ATSC broadcasting, however. NTSC is generally used to refer to the old analog signal that was first adopted in the USA in the 1940s.
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