| 摘要 |
PURPOSE: A multi-software downloading method of a digital TV is provided to reduce the size of a signal band and provide multiple software items. CONSTITUTION: A transmitter confirms multiple software versions selected by a receiver user(S1). When the user selects a software version upgraded from a basic version, only the image of the basic version and an image corresponding to a difference between the basic image and the upgraded image are transmitted to a receiver(S3). An image of the upgraded version is generated from the image of the basic version and the differential image(S4). The generated image is updated(S5). |
