METHOD OF DATA LOADING INTO MPEG RECEIVER/DECODER AND SYSTEM OF MPEG BROADCASTING FOR ITS REALIZATION Russian patent published in 2002 - IPC

FIELD: digital television. SUBSTANCE: invention refers to digital television system in which TV set receives TV signal through receiver/decoder, for instance, in the form of attachment, and application can be loaded into receiver/decoder and realized. Application code comes in the form of modules and search for catalogue module within limits of specified local address precedes module loading. Modules are signed and catalogue module is so signed and encoded that single coding operation is used for all modules. Permanent storage of receiver/decoder stores collection of accessible coding keys so that applications can be formed by various sources. There is no necessity for these sources to know one another. Aid for temporary storage of coding key in on-line storage of receiver/decoder is allotted so that manufacturer of receiver/decoder can test its functions. Catalogue signature can be hidden in any position of fictitious data unit in catalogue module. Application subject to loading can be tested with use of bit array of test of accessibility kept in storage of receiver/decoder. EFFECT: improved reliability of method. 103 cl, 10 dwg