Modulation spectrum system for high-definition signal and method therefor

• Main Authors: CHANG, DA-XUN, WANG, WEN-DEH, KAO, ZONG-XIAN, LIN, YI-SHENG, JUNG, CHUNG-KU
• Format: Patent
• Language: Chinese; English
• Published: 01.06.2017
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

A modulation spectrum system for high-definition signal includes an image-capturing device, a video-modulation device, and a first connecting port. The image-capturing device generates a first digital-video signal by capturing a video image. The first digital-video signal includes a luminance fundamental-frequency signal and a chrominance fundamental-frequency signal. The video-modulation device is connected to the image-capturing device, modulates the luminance fundamental-frequency signal to a luminance-modulation signal having a first frequency-band, modulates the chrominance fundamental-frequency signal to a chrominance-modulation signal having a second frequency-band, and integrates the luminance-modulation signal and the chrominance-modulation signal to be an analog-video signal. The first frequency-band is not overlapped with the second frequency-band. The first connecting port is connected to the video-modulation device for outputting the analog-video signal. By separations of luminance and chrominanc