Proper data is selected from a plurality of data which are multiplexed and transmitted to download the proper data. The maker and model of a receiver and the version of a control program are stored in a load section as a maker ID, a model ID, and a version ID. The section number and the total number...http://www.google.ca/patents/US6549528?utm_source=gb-gplus-sharePatent US6549528 - Data transmission device, reception device, data transmission system, and data transmission method