Loading a machine code API onto an 8-bit virtual machine to enable new functionality
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United States of America Patent
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Feb 10, 2015
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app pub date -
Apr 22, 2008
filing date -
Feb 10, 2004
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Abstract
A compact, register-based, eight-bit virtual machine is realized on a resource-constrained device such as, for example, an IR remote control device. The IR remote control device includes a script interpreter, as well as loader API functionality and API functionality to support communication over a bidirectional link. The functionality of the remote control device is customized by loading either a machine code API routine and/or a script API routine onto the remote control device via the bidirectional link. A script is loaded via the bidirectional link and is stored in program memory. Once loaded, the script is interpreted by the virtual machine, thereby calling API functionalities provided, and thereby causing the remote control device to have a desired customized function. Providing the virtual machine on all the members of a family of remote control devices allows the same script to run on any remote control device of the family.
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