Electronic apparatus, function selection method of electronic apparatus and management system of electronic apparatus

An electronic apparatus management system comprising:

• a first apparatus, for recording and reproducing video data, operable to carry out a plurality of functions;
• a second apparatus coupled to the first apparatus, the second apparatus operable to enable the first apparatus to execute a selected one of the plurality of functions, wherein the second apparatus comprises a control unit, the control unit including:
• a processing unit for supplying commands, to the first apparatus, for carrying out the selected one of the plurality of functions;
• and
• a memory slot operable to receive a memory stick that includes a key file for activating an additional apparatus function the additional apparatus function stored in the key file,
• a network;
• and
• a management section operable to store the key file, wherein the key file is accessed via the network by at least one user computer such that the at least one user computer saves the key file to the memory stick,
• wherein
• when the key file is uninstalled in the second apparatus, the plurality of functions executable by the first apparatus include basic apparatus functions, and
• when the key file is installed in the second apparatus via the memory slot, the plurality of functions executable by the first apparatus include both the basic apparatus functions and the additional apparatus function upon the processing unit validating authorization data stored in the key file,
• wherein validating the authorization data by the processing unit includes:
• matching a serial number, associated with the first apparatus, with a serial number located in the key file,
• matching a version, associated with the second apparatus, with a version located in the key file, and
• matching the additional apparatus function stored in the key file with a stored apparatus function stored in the first apparatus.

A method of selecting an electronic apparatus function, the method comprising:

• determining whether a user has requested an additional apparatus function to that of a plurality of functions executable by a first electronic apparatus which records and reproduces video data;
• creating a key file based on determining that the additional apparatus function has been requested, wherein the key file includes authorization data and the additional apparatus function;
• installing the key file on a second electronic apparatus associated with the first electronic apparatus;
• checking the authorization data on the key file by:
• matching a serial number associated with the first apparatus with a serial number located in the key file,
• matching a version associated with the second apparatus with a version located in the key file, and
• matching a stored apparatus function in the first apparatus with the requested additional apparatus function stored in the key file;
• and
• displaying the requested additional apparatus function in addition to the plurality of functions based on an affirmative result corresponding to the checked authorization data, wherein in the absence of the affirmative result, only the plurality of functions are displayed.