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. 03, 2000
Filed:
Dec. 15, 1997
Craig L Chaiken, Tomball, TX (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
A computer system that implements communication support with a minimum amount of main memory. The computer system provides a Basic Input/Output System (BIOS) for execution in Random Access Memory (RAM). Included in the BIOS is the communication initialization and runtime code. Upon initialization, the communication initialization code is executed, configuring and initializing communication devices, including a Universal Serial Bus (USB) device. After the initialization, the runtime communication code is moved to a secure memory, such as System Management Mode (SMM) memory. The runtime communication code is executed in response to an interrupt to the secure memory. If the secure memory is SMM memory, then a SMI will trigger the execution of the communication code. The main memory is not accessed to execute the runtime communication code.