Importance

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Abstract

An external memory cartridge for replaceable connection with a video game main unit contains a security device that prevents unauthorized memory cartridges from playing on the game main unit. The video game main unit connects to a television receiver, and includes at least one video graphics processing arrangement that controls the television receiver to display a changing picture defined by video game software contained in the external memory cartridge. The external memory cartridge has a cartridge housing that contains a video game memory device and a security device. The video game memory device contains video game software. An electrical connector couples the video game memory device with said video game main unit to permit the video game main unit to access and execute the video game software. The security device includes at least one input terminal and at least one output terminal connected to said electrical connector. The security device may comprise a microprocessor that performs a stored security program. It receives input signals from its electrical connector on the input terminal and generates, on its output terminal, results based on said received input signals and the stored security program.

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First Claim