一项涉及录制和重现数据的技术。 这项专利最先是由韩国现代公司在1993年申请，并于1995年通过专利局审核。
The patent was originally filed by Hyundai in October 1993 and granted by the US Patent Office in August 1995.
最高的专利国是日本、美国、中国、韩国、欧洲专利局。
Topping the patent filing league are Japan the United States China the republic of Korea and the European Patent Office.
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