The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 2015
Filed:
Aug. 28, 2008
Yongyong Xu, Sunnyvale, CA (US);
Yongyong Xu, Sunnyvale, CA (US);
Intellectual Ventures Fund 63 LLC, Las Vegas, NV (US);
Abstract
Methods and systems for running multiple operating systems in a single embedded or mobile device (include PDA, cellular phone and other devices) are disclosed. The invention allows a mobile device that normally can only run a single operating system to run another operating system while preserving the state and data of the original operating system. Guest OS is packaged into special format recognizable by the host OS that still can be executed in place by the system. The Methods include: •Change the memory protection bits for the original OS; •Fake a reduced physical memory space for guest OS; •Use special memory device driver to claim memories of host OS; •Backup whole image of the current OS and data to external memory card.