DATA REPRODUCTION DEVICE, VIDEO DISPLAY DEVICE AND SOFTWARE UPDATE SYSTEM AND SOFTWARE UPDATE METHOD WHICH USE THEM

摘要

An MPEG decode IC of a DVD reproduction device decodes update software which has been read in from a CD-ROM. A transmission signal conversion IC transmits the decoded update software to a television receiver via a data line by using an InfoFrame of supplemental data. A microprocessor of the DVD reproduction device instructs the microprocessor of the television receiver to update the software. A memory of the television receiver stores the software of the microprocessor. The microprocessor updates the software of the memory by using the update software received by a reception signal conversion IC.