Systems and methods for maintaining CRTM code

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8943491
SERIAL NO

12146867

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Embodiments comprise systems, methods and media for updating CRTM code in a computing machine. In one embodiment, the CRTM code initially resides in ROM and updated CRTM is stored in a staging area of the ROM. A logical partition of L2 cache may be created to store a heap and a stack and a data store. The data store holds updated CRTM code copied to the L2 cache. When a computing system is started, it first executes CRTM code. The CRTM code checks the staging area of the ROM to determine if there is updated CRTM code. If so, then CRTM code is copied into the L2 cache to be executed from there. The CRTM code loads the updated code into the cache and verifies its signature. The CRTM code then copies the updated code into the cache where the current CRTM code is located.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • LENOVO INTERNATIONAL LIMITED

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brogan, Sean P Kenmore, US 2 23
Kochar, Sumeet Apex, US 55 475

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 27, 2026
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00