Invention Grant
- Patent Title: USB legacy support system
- Patent Title (中): USB传统支持系统
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Application No.: US61030Application Date: 1998-04-16
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Publication No.: US6067589APublication Date: 2000-05-23
- Inventor: Tohru Mamata
- Applicant: Tohru Mamata
- Applicant Address: JPX Kawasaki
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JPX Kawasaki
- Priority: JPX9-100229 19970417
- Main IPC: G06F3/02
- IPC: G06F3/02 ; G06F13/10 ; G06F13/36 ; G06F15/02
Abstract:
Data input from a USB keyboard or mouse to a USB host controller is transformed by an SM-BIOS into data corresponding to a PS/2 keyboard/mouse, and then transferred to the I/O port (60h/64h) of a standard bus interface via the shadow port of a KBC. The KBC generates IRQ1 (IRQ12) similar to the case wherein it receives data from the PS/2 keyboard or mouse, thereby starting a keyboard driver.
Public/Granted literature
- USD393246S Enclosure for a desktop personal computer Public/Granted day:1998-04-07
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