Abstract:
Disclosed herein is an apparatus for providing firmware update, which includes a state information analysis unit for analyzing device state information received from a firmware update target device and thereby acquiring information about a version of existing firmware and information about a storage unit of the firmware update target device; an image creation unit for creating a delta image in units of pages based on a flash memory page size included in the information about the storage unit and on a difference between the existing firmware and new firmware; an update information creation unit for creating update information in which an update method is specified; and a communication unit for transmitting the update information and the delta image to the firmware update target device in order to update the existing firmware of the firmware update target device based on the update method.
Abstract:
Provided are an apparatus and method for dynamically controlling security of a computing device provided with a plurality of security modules. The apparatus includes a security policy storage unit configured to store a security policy that is set according to at least one of a state of the computing device and a characteristic of an application program executed on the computing device, and a dynamic calling control unit configured to recognize that a security function is called by the application program, and determine one of the plurality of security modules whose security function is to be called according to the set security policy.
Abstract:
A transimpedance pre-amplifier (TIA) with an improved bandwidth. In the TIA, a feedback circuit is added to a regulated cascode structure to be connected in parallel, so that an input resistance value is reduced and a bandwidth is easily broadened. Alternatively, an inductor is added to the regulated cascode structure, so that an input capacitance is reduced and bandwidth is easily broadened.