Patent ID: 8238332
Filing Date: 2012-08-07
Classification: H04N

Abstract:
1. A signal transmitting device comprising: a synchronous-data detecting unit that detects, from parallel data specified by a predetermined format and including video data and audio data, synchronous data for controlling synchronization of the parallel data, the parallel data to be input is parallel signals of a dual link or a high definition serial digital interface (HD-SDI) format allocated to first and second links; an audio extracting unit that stores the audio data in an audio memory; a clock extracting unit that extracts a reference clock from the parallel data; a multiplexing unit that multiplexes the audio data read out from the audio memory and the synchronous data in a horizontal auxiliary data space of the video data associated with the first and second links, the horizontal auxiliary data space of the video data being at least twice as large as a horizontal auxiliary space included in the HD-SDI format; a control unit that controls, on the basis of the synchronous data detected by the synchronous-data detecting unit and the reference clock extracted by the clock extracting unit, timing of the multiplexing unit for multiplexing the audio data with the video data; and a parallel serial converting unit that converts the video data multiplexed with the audio data by the multiplexing unit into a transmission stream specified by a Level A of a 3G serial digital interface (3G -SDI) format.