Hewlett-packard Development Company, L.p.

Eugene Cohen

Robert A Rust

Richard G Sevier

Dale Haddon Wolin

Scott D McLean

David Plaquin

Chris Richard Gunning

Brian E Hoffmann

Senthil Kumar Ramakrishnan

Pierre Belgarric

Chris Lee

An IC comprising functional circuit to perform primary functions of the IC is provided. The functional circuit is to enable electrical signals to propagate through it within a timing constraint of the functional circuit. The IC comprises at least one canary circuit used for detecting glitch attacks on the circuit. Electrical signals are to propagate through the canary circuit(s) within a defined timing constraint of the canary circuit(s). The canary circuit is to provide a signal path designed such that in the event of a timing constraint of the functional circuit(s) is violated due to a glitch attack, also the timing constraint of the canary circuit(s) is violated.

Integrated circuit(s) with anti-glitch canary circuit(s)

Methods, apparatus, systems and articles of manufacture are disclosed to maintain cache coherency. Examples disclosed herein involve, in response to receiving, from a direct memory access controller, an interrupt associated with a direct memory access operation, handling the interrupt based on a parameter of the direct memory access operation, wherein the direct memory access controller is to execute the direct memory access operation.

Cache coherency for direct memory access operations

A firmware bundle is download to a non-operational storage area without changing a live copy of firmware in a device. The firmware bundle is downloaded in order to reboot the device to deploy one or more downloaded firmware packages from the non-operational storage area to the device, launch an Early Boot Installer manager to spawn and monitor the status of one or more Early Boot Installer processes contained in the firmware bundle download, determine in parallel whether a firmware install to one or more subsystems of the device is desire, and install the downloaded firmware package in parallel to one or more subsystems of the device.

Firmware installation

A method and apparatus for controlling the charge and discharge currents in a battery () as a function of temperature. When a battery () is charged or discharged in an environment that approaches its design operating temperature extreme, the currents are reduced to limit self-heating of the battery and thus extend the useful operating environment temperature range. A temperature sensor () is coupled to a controller () to sense the battery () temperature. The temperature information is used to set a suitable charging or discharging current (). In the illustrative embodiment, the charging current is set to a maximum value when said temperature is lower than a first predetermined threshold value, the maximum value being the battery's maximum specified charging current, and the first predetermined threshold value being the battery's maximum charging temperature.

Apparatus and method for charging and discharging a battery

A method and apparatus performs hardware assisted communication between processors. In response to direction from a first processor, a first coprocessor writes information in a first block of mirrored memory. Mirrored memory is maintained, allowing a second coprocessor to read the information from a second block of mirrored memory. The information is saved in memory accessible to a second processor. The information is accessed by the second processor.

Hardware assisted communication between processors

A method and apparatus for controlling the charge and discharge currents in a battery ( ) as a function of temperature. When a battery ( ) is charged or discharged in an environment that approaches its design operating temperature extreme, the currents are reduced to limit self-heating of the battery and thus extend the useful operating environment temperature range. A temperature sensor ( ) is coupled to a controller ( ) to sense the battery ( ) temperature. The temperature information is used to set a suitable charging or discharging current ( ).

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Eagle, ID, United States of America

Eugene Cohen