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公开(公告)号：US11902263B2
公开(公告)日：2024-02-13
申请号：US18149218
申请日：2023-01-03
Applicant: International Business Machines Corporation
Inventor： Christopher Steffen , Chad Albertson , Nicholas Ollerich , Eric J. Campbell
CPC classification number: H04L63/0442 , H04L9/0866 , H04L9/0897 , H04L63/0876
Abstract: A system and method for pairing two devices for secure communications. A user selects a first device to pair with a second device. The first and second devices have the ability to securely communicate with each other through the use of encrypted communications. An encryption key is written to the first device and then burned into the encryption module on the first device. A corresponding decryption key is written to the second device and then is burned into the decryption module of the second device.
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公开(公告)号：US20230318806A1
公开(公告)日：2023-10-05
申请号：US17656680
申请日：2022-03-28
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Eric J. Campbell , Christopher Steffen , Chad Albertson , Nicholas Ollerich
CPC classification number: H04L9/0819 , H04L9/3073 , H04L63/0428
Abstract: A system and method of securely controlling a device from another device. The user of the device attempts to modify the device in some way. In response to the attempted modification a request is generated and sent to a controlling device. The request includes information related to the desired modification. The controlling device analyzes the request and a determination on how to respond to the request is made. This response is encrypted at the controlling device and transmitted to the device. The device then decrypts the response and implements the indicated response to the request. The encryption and decryption keys are burned into the corresponding devices such that information needed to decrypt the response is not transmitted to the device.
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公开(公告)号：US11693446B2
公开(公告)日：2023-07-04
申请号：US17506172
申请日：2021-10-20
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： John Borkenhagen , Christopher Steffen , Grant P. Kesselring
Abstract: On-chip spread spectrum synchronization between spread spectrum sources is provided. A spread spectrum amplitude of a signal of a spread spectrum reference clock is obtained using one or more delay lines of one or more delay elements in a skitter circuit. A spread width of the spread spectrum amplitude of the signal is determined, using one or more sticky latches in the skitter circuit, based on one or more edges of the signal. A delay line of the one or more delay elements corresponding to a falling edge of the spread width of the signal is identified using combinational circuitry of the skitter circuit. A spread spectrum signal of a spread spectrum slave clock is synchronized with the signal of the spread spectrum reference clock based on the delay line.
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14.发明授权公开(公告)号：US11662381B2
公开(公告)日：2023-05-30
申请号：US17405173
申请日：2021-08-18
Applicant: International Business Machines Corporation
Inventor： Nathan Ross Blanchard , Venkat Harish Nammi , Dereje Yilma , Chad Andrew Marquart , Glen A. Wiedemeier , Jeffrey Kwabena Okyere , Erik English , Christopher Steffen , Vikram B Raj , Michael Wayne Harper
IPC: G01R31/3177 , G01R31/317 , G06F1/08
CPC classification number: G01R31/3177 , G01R31/31724 , G01R31/31727 , G06F1/08
Abstract: Aspects of the invention include a phase rotator, that is located at a built-in self-test (BIST) path of a receiver, receiving a clock signal from an on-chip clock. The phase rotator shifts the phases of the clock signal. The phase rotator transmits the shifted clock signal to a binary sequence generator, that is located at the receiver. The binary sequence generator outputs a binary sequence, where the binary sequence generator is driven by the shifted clock signal.
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15.发明授权公开(公告)号：US10666540B2
公开(公告)日：2020-05-26
申请号：US15651346
申请日：2017-07-17
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Luiz C. Alves , Patrick J. Meaney , Christopher N. Oelsner , Gary A. Peterson , Christopher Steffen
Abstract: A technique relates to dynamic time-domain reflectometry (TDR). A machine spares a bad lane in a bus. The bad lane is taken offline. TDR is dynamically executed on the bad lane while the bus is still in operation. A defect is isolated using results of the TDR.
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Patent Agency Ranking
公开(公告)号：US12289300B2
公开(公告)日：2025-04-29
申请号：US18539956
申请日：2023-12-14
Applicant: International Business Machines Corporation
Inventor： Christopher Steffen , Chad Albertson , Nicholas Ollerich , Eric J. Campbell
Abstract: A system and method for pairing two devices for secure communications. A user selects a first device to pair with a second device. The first and second devices have the ability to securely communicate with each other through the use of encrypted communications. An encryption key is written to the first device and then burned into the encryption module on the first device. A third device is selected to pair with the first device. A second encryption key is written to the first device and then burned into the encryption module.
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公开(公告)号：US12143471B2
公开(公告)日：2024-11-12
申请号：US17656685
申请日：2022-03-28
Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
Inventor： Eric J. Campbell , Christopher Steffen , Chad Albertson , Nicholas Ollerich
Abstract: A system and method to tie a removable component to a host device. A first pairing key is stored into a security module on a host device such as a server rack. A removable component is inserted into the server rack for the first time. In response to this first insertion the first pairing key is burned into the removable component using a plurality of physically modifiable internal components. The server rack/security module receives a request form the removable component to operate on the server rack, the request includes a burned in pairing key. The security module compares the received pairing key with the first pairing key and permits operation of the removable component in response to a match between the received pairing key and the first pairing key.
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公开(公告)号：US11880469B2
公开(公告)日：2024-01-23
申请号：US17810361
申请日：2022-07-01
Applicant: International Business Machines Corporation
Inventor： Christopher Steffen , Chad Albertson , Nicholas Ollerich , Eric J. Campbell
IPC: G06F21/57 , G06F21/64 , G06F9/24 , G06F11/10 , G06F9/4401
CPC classification number: G06F21/575 , G06F9/24 , G06F9/4406 , G06F11/1004 , G06F21/64 , G06F2221/033
Abstract: A system and method for providing a secure image load. The system includes a microcontroller. The microcontroller has a plurality of physically modifiable internal components (PMIC). Each of the plurality of PMICs can only be modified one time. The system further includes an image loader configured to load a boot image from the memory of the microcontroller, and a checksum calculator configured to calculate a checksum value for the boot image. The system further includes a checksum burner configured to modify the plurality of PMICs to create a binary representation of the checksum value for the image. A checksum value is calculated for the image. This checksum value is written to the microcontroller. The value is burned into the microcontroller using the PMICs. Further, responses to the checksum mismatch are burned into the microcontroller using the PMICs that are present in the microcontroller.
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公开(公告)号：US20230155986A1
公开(公告)日：2023-05-18
申请号：US18149218
申请日：2023-01-03
Applicant: International Business Machines Corporation
Inventor： Christopher Steffen , Chad Albertson , Nicholas Ollerich , Eric J. Campbell
CPC classification number: H04L63/0442 , H04L9/0866 , H04L9/0897 , H04L63/0876
Abstract: A system and method for pairing two devices for secure communications. A user selects a first device to pair with a second device. The first and second devices have the ability to securely communicate with each other through the use of encrypted communications. An encryption key is written to the first device and then burned into the encryption module on the first device. A corresponding decryption key is written to the second device and then is burned into the decryption module of the second device.
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公开(公告)号：US11570156B2
公开(公告)日：2023-01-31
申请号：US16919489
申请日：2020-07-02
Applicant: International Business Machines Corporation
Inventor： Christopher Steffen , Chad Albertson , Nicholas Ollerich , Eric J. Campbell
Abstract: A system and method for pairing two devices for secure communications. A user selects a first device to pair with a second device. The first and second devices have the ability to securely communicate with each other through the use of encrypted communications. An encryption key is written to the first device and then burned into the encryption module on the first device. A corresponding decryption key is written to the second device and then is burned into the decryption module of the second device.
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