Invalidity dossier
US 6854064
ACPI complaint computer system and overtemperature protection method therefor
Current assignee: Samsung Electronics Co Ltd
Added 9/23/2026, 2:57:54 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 6854064 B2
Title: "ACPI complaint computer system and overtemperature protection method therefor" (spelling as given in the source).
Assignee/Inventor: Original assignee Samsung Electronics Co., Ltd.; inventor Hee-Geol Ahn. Application US09/906,750; priority date 2001-01-31 (Korean filing); filed 2001-07-18; granted 2005-02-08. Status listed as "Expired – Fee Related," adjusted expiration 2023-03-19. Publication US20020104030A1.
Purpose: To protect an ACPI-compliant computer system (particularly portable computers, where components are packed into a small space) from excessive internal temperature by having the operating system—not the BIOS alone—place the system into an ACPI "sleep" state, so data is correctly restored on wake-up. The background explains that under APM the BIOS handled "save to disk," but under ACPI the OS expects resume via sleep type S3 or S4, so BIOS-initiated sleep could halt the system.
Plain-language scope: A temperature sensor senses internal temperature and issues an alarm signal when it exceeds a predetermined value. A bridge controller stores/reads that signal and generates a system management interrupt (SMI). The BIOS ROM's SMI handler holds a power management routine that outputs a power control command signal to a power management processor, which generates a system control interrupt (SCI). The operating system then enters the "sleep" state (S3 or S4, per user power-management selection) in response to the SCI. The method claim sequence: sense temperature → compare to predetermined value → alarm signal → SMI → power control command → SCI → OS-controlled sleep. The specification describes FIG. 1 (block diagram) and FIG. 2 (flow chart, steps S110–S160).
Not established by the supplied excerpt: The full text of the claims, claim numbering, and any dependent-claim limitations; the omitted portion of the priority paragraph and the remainder of the description; the drawings themselves; and any prosecution history, litigation, ownership transfers, validity, or prior-art analysis. Only the abstract, background, summary, selected description, and classifications are available. The snippet typo "system command interrupt" appears in the abstract but is rendered "system control interrupt" and "SCI" elsewhere.
Generated 10/1/2026, 9:51:51 PM
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Assignment history
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Prior art
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Extensions
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Derivative works
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