Image information transmission system, image information transmitting apparatus, image information receiving apparatus, image information transmission method, image information transmitting method, and image information receiving method

摘要

An image information transmission system includes an image information transmitting apparatus (1), and an image information receiving apparatus. The image information transmitting apparatus (1) obtains primary-image transmission data, which is subjected to predetermined compression-coding (19, 20, 21) including bidirectionally predictive coding, for transmitting a moving image representing a primary image, and generates secondary-image transmission data for transmitting a secondary image to be displayed together with the primary image on a display screen. The primary-image transmission data and the secondary-image transmission data are transmitted to the image information receiving apparatus via a predetermined network communication link (26). Upon receipt of the primary-image transmission data and secondary-image transmission data, the image information receiving apparatus decodes the primary-image transmission data using a decoding scheme corresponding to the coding process, and decodes the secondary-image transmission data to generate a secondary-image video signal. The primary-image video signal and the secondary-image video signal are combined to display an image.