Abstract: A device having a power supply monitoring capabilities, the device includes: a power supply unit; at least one real time clock generator counter adapted to receive a supply voltage from the power supply unit; a fixed value storage circuit that is un-accessible to software executed by a processor; wherein the fixed value storage circuit stores a fixed value; wherein the fixed value includes multiple bits; a volatile storage unit, being accessible to the processor; wherein the volatile storage unit is adapted to: (i) store a reset value after being reset; (ii) receive the fixed value during an initialization state; and (iii) store the fixed value until being reset; wherein the volatile storage unit is designed such that there is a low probability that the reset value equals the fixed value; and a comparator adapted to provide a tamper indication if the fixed value stored at the fixed value storage circuit differs from a value stored at the volatile storage unit.

Abstract: An integrated circuit that includes a controller and multiple internal circuitries, whereas the integrated circuit is characterized by further including a security mode determination unit that includes multiple one time programmable components for defining a security mode out of multiple possible security modes, whereas a selected circuitry mode affects access to an internal circuitry. A method for testing an integrated circuit, the method includes: receiving a request to access an internal circuitry; and responding to the request in view of a defined security mode; whereas the method is characterized by a stage of defining a security mode of a debug circuit out of multiple security modes, whereas the definition is responsive to at least a state of multiple one time programmable components.

Abstract: An encryption apparatus (14) includes a secure processing system (12) in the form of an integrated circuit. The secure processing system (12) includes an on-chip secure memory system (30). The secure memory system (30) includes a non-volatile, read-only, permanent key register (62) in which a permanent cryptographic key (64) is stored. The secure memory system (30) also includes a non-volatile, read-write, erasable key register (56) in which an erasable cryptographic key (60) is stored. Symmetric cryptographic operations take place in an encryption engine (46) using an operating cryptographic key (68) formed by combining (96) the permanent and erasable keys (64, 60). A tamper detection circuit (70) detects tampering and erases the erasable key (60) when a tamper event is detected.

Abstract: A method for monotonically counting and a device having monotonically counting capabilities. The device includes: a monotonic counter, an input interface adapted to receive requests to update a value of the monotonic counter and an average request rate limiter circuit adapted to selectively reject a request if an amount of monotonic counter value updates within a predefined time window exceeded a threshold; wherein the threshold and the predefined time window are defined in response to at least one legitimate request pattern.

Abstract: A near eye image display system includes an image projector, a beam combiner assembly, and an optical assembly, optically coupled between the image projector and the beam combiner assembly The image projector projects a display image toward an optical pathway, the optical pathway intersecting a viewing axis, the viewing axis extending from the eye of a user to an ambient scene The beam combiner assembly includes a plurality of beam combiners optically cascaded along the optical pathway, each of the beam combiners being disposed diagonally to the optical pathway and diagonally to the viewing axis Each of the beam combiners is arranged such that for each two adjacent beam combiners, the first of the adjacent beam combiners is optically located between the second of the adjacent beam combiners and the image projector The geometrical projection of the second beam combiner onto a first plane perpendicular to the optical pathway, is subsumed within the geometrical projection of the first beam combiner onto the firs

Abstract: System for improving audiovisual communication, the system including a line of sight determining system for determining a user line of sight of the eyes of a user, and an image display system coupled with the line of sight determining system, the image display system displaying a supplementary image for the eyes, and controlling a property of the supplementary image and of a scene image, according to the determined user line of sight.