Patent certificates: Audio-video synchronization device for digital audio embedded in video, coding and decoding method for YUV4:4:4 data, clock synchronization system for digital audio-video signals, audio-video signal transmission interface, a transmission method using a single transmission method using a signal chain table, a method for improving the speed of image switching, a utility model patent certificate, and a device for 4:4:4 transmission in the color space.
