Decoder with a switch

A new chip converts standard and high-definition video signals to a computer video format.

has introduced the industry’s first decoder with an integrated 2:1 multiplexing (MUX) video switch that uses analog technology to accurately convert standard and high-definition video (YPbPr) signals to a computer video (RGB) format.

The LMH1251 increases compatibility between different video standards and formats, allowing consumers to output video directly from DVD players, gaming devices and other devices to their personal computer monitors.

It also performs all the necessary sync processing to generate horizontal and vertical sync signals from standard (SD) and high-definition (HD) video formats.

The LMH1251’s conversion process is done using analog technology via a colour-space conversion matrix, eliminating multiple stages of digital implementations.

It converts video to within 1% accuracy based on vector scope analysis, which exceeds the accuracy of current solutions on the market. The device accepts one set of YPbPr inputs and one set of RGB/HSync/VSync inputs. Using the integrated 2:1 MUX and based on the input selected, the output will be either a decoded TV or buffered PC video signal.

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