Patent ID: 6263497
Filing Date: 2001-07-17
Classification: G06F,Y10S

Abstract:
A remote maintenance method in which the transmitter transmits a program which is a collection of functions performing the respective tasks, via wired or wireless digital broadcasting, and a receiver updates the version of software comprising a group of the programs by changing the programs or adding other programs to the programs,the transmitter transmitting, by data packet, download information including machine type codes indicating the version of hardware able to receive the program data, version information indicating the version of software corresponding to the machine type code, program names being the names of the programs to replace with or be added to for the version of software, and the identifiers of program data packets (PID) including program codes necessary for updating the version of software corresponding to the machine type code, and program data including the program codes of the program, the program name, and the identifier of the packet (PID), andthe receiver comparing a machine type code indicating the version of the receiver hardware, and version information indicating the version of software corresponding to the machine type code, with the machine type codes and version information described in the received download information, and, when the versions of software do not match each other and thus the version of software is not updated, updating the version by receiving and storing the data packet including program data necessary for updating the version, based on the PID described in the download information.