Abstract: An improved, adaptive optics control system having a signal-to-noise ratio-tuned wavefront corrector is disclosed. The system comprises a wavefront corrector, a wavefront sensor, a wavefront reconstructor and a wavefront controller. The wavefront corrector has a surface controlled by a plurality of actuators. The wavefront slope sensor has a subaperture separation mechanism for defining a plurality of subapertures through which the distorted wavefront can pass, each subaperture corresponding to an actuator of the wavefront corrector. The wavefront slope sensor produces a wavefront sensor output signal for each subaperture indicative of the distortion of the wavefront. The wavefront reconstructor is adapted to receive the wavefront sensor output signals and calculate corresponding phase estimates based thereon, each phase estimate having a signal-to-noise ratio.

Abstract: Described is a computing platform comprising a host processing system to host an operating system, a communication adapter to transmit data to or and receive data from a data transmission medium, and a non-volatile storage. The computing platform may also comprise an agent executable independently of the operating system to enable read-only or read/write access to at least a portion of the non-volatile storage.

Abstract: An improved, adaptive optics control system is disclosed. The system comprises a wavefront corrector, a wavefront sensor, a wavefront reconstructor and a wavefront controller. The wavefront corrector has a surface controlled by a plurality of actuators. The wavefront slope sensor has a subaperture separation mechanism for defining a plurality of subapertures through which the distorted wavefront can pass, each subaperture corresponding to an actuator of the wavefront corrector. The wavefront slope sensor produces a wavefront sensor output signal for each subaperture indicative of the distortion of the wavefront. The wavefront reconstructor is adapted to receive the wavefront sensor output signals and calculate corresponding phase estimates based thereon, each phase estimate having a signal-to-noise ratio. The wavefront reconstructor generates a plurality of correction signals to be applied to each of the actuators of the wavefront corrector, each correction signal having a bandwidth.

Abstract: A state space wavefront reconstructor for use in an adaptive optics control system is disclosed. The adaptive optics control system comprises a wavefront corrector having a surface controlled by a plurality of actuators, at least one wavefront sensor adapted to measure at least one wavefront state of the wavefront and generate wavefront sensor output signals indicative thereof, and a state space wavefront reconstructor adapted to receive the wavefront sensor output signals and generate a plurality of correction signals based thereon to be applied to the wavefront corrector. The wavefront reconstructor comprises a wavefront velocity estimator, a state space wavefront estimator, and a wavefront phase reconstructor. A method of compensating for the distortion of an optical wavefront using such a state space wavefront reconstructor is also disclosed.

Abstract: Method and Apparatuses for determining integrity of a platform and notifying a remote system. In one embodiment a verification agent accesses a portion of a memory on the platform at initialization of the platform to determine if the data has been compromised or corrupted. The verification agent causes the information to be transmitted to a remote system. The verification agent may be local to the platform for which integrity is determined, and transmit the information to a remote administrator. Alternatively, the agent may access the platform over a bus or private channel, or a network connection and indicate information regarding the verification process to an entity remote to the tested platform.

Abstract: A method and apparatus for cross validation of data using multiple subsystems are described. According to one embodiment of the invention, a computer comprises a first subsystem and a second subsystem; and a memory, the memory comprising a first memory region and a second memory region, the first memory region being associated with the first subsystem and a second memory region being associated with the second subsystem; upon start up of the computer, the first subsystem to validate the second memory region and the second subsystem to validate the first memory region.

Abstract: Cooperative embedded agents as well as manageability and security operations that can be performed on a host system having cooperative embedded agents are disclosed.

Abstract: Methods and apparatuses associated with sharing cryptographic keys in a network domain. An embedded agent on a network endpoint participates in the distribution of cryptographic keys. In one embodiment the embedded agent receives and stores a shared symmetric key, as do embedded agents on other network endpoints in the same network domain. The embedded agent causes the shared key to be stored in a secure storage not directly accessible by the host. When the host wants to transmit enciphered data, the embedded agent may provide access to cryptographic services. The embedded agent provides isolation of the shared key from parts of the host that are subject to compromise by attack or infection.

Abstract: Network coupled processor-based systems may collect asset information. That information may be reported even when those systems are non-operational. The information may be utilized to provide information back to those systems, to diagnose problems, to provide repair, and to push system specific diagnostics and software to particular systems over a network.

Abstract: In one embodiment, a method is provided. The method of this embodiment includes determining, at least in part at a first node, at least one communication protocol via which a second node is capable of communicating with the first node. In this embodiment, the determining of the at least one communication protocol may be based at least in part upon at least one parameter received from the second node during an initialization of communication between the first node and the second node. The at least one parameter may specify, at least in part, the at least one communication protocol. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Abstract: A state space wavefront reconstructor for use in an adaptive optics control system is disclosed. The adaptive optics control system comprises a wavefront corrector having a surface controlled by a plurality of actuators, at least one wavefront sensor adapted to measure at least one wavefront state of the wavefront and generate wavefront sensor output signals indicative thereof, and a state space wavefront reconstructor adapted to receive the wavefront sensor output signals and generate a plurality of correction signals based thereon to be applied to the wavefront corrector. The wavefront reconstructor comprises a wavefront velocity estimator, a state space wavefront estimator, and a wavefront phase reconstructor. A method of compensating for the distortion of an optical wavefront using such a state space wavefront reconstructor is also disclosed.

Abstract: An improved, adaptive optics control system having a signal-to-noise ratio-tuned wavefront corrector is disclosed. The system comprises a wavefront corrector, a wavefront sensor, a wavefront reconstructor and a wavefront controller. The wavefront corrector has a surface controlled by a plurality of actuators. The wavefront slope sensor has a subaperture separation mechanism for defining a plurality of subapertures through which the distorted wavefront can pass, each subaperture corresponding to an actuator of the wavefront corrector. The wavefront slope sensor produces a wavefront sensor output signal for each subaperture indicative of the distortion of the wavefront. The wavefront reconstructor is adapted to receive the wavefront sensor output signals and calculate corresponding phase estimates based thereon, each phase estimate having a signal-to-noise ratio.

Abstract: Use is made of a digitally assisted DATV to effect a bandwidth reduction encoding and bandwidth reduction decoding, in addition to MAC-coding and MAC-decoding, of at least three picture signal channels (PC) each having a different picture signal refresh period equal to, for example, 80, 40 and 20 ms which are coupled via a time-division multiplex circuit (MUX). For with the diversity of picture signal sources, it was found that distinguishing during the picture signal processing between a film mode (SW1, T40) and a non-film mode (SW1, T20) results in a significantly improved high-definition picture resolution. This distinction is expressed at the DATV by one information bit (FM'). During the non-film mode (SW1, T20) three Y-liminance channels (PC11, PC13 and PC12) of 80, 40 and 20 ms and two U and V-chrominance channels (PC21 and PC22) of 80 and 20 ms are operative. During the film mode (SW11, T40) the Y-channels (PC11 and PC13) and the U and V-channels (PC21 and PC23) of 80 and 40 ms are only operative.

Abstract: A television picture memory (MEM) containing digital picture signal values associated with picture elements (PIX) is coupled via a picture signal value comparison circuit (COM1) and an absolute value circuit (ABS1) to an adaptive threshold circuit (THR) for the picture signal differences. In order to obtain a motion detection with a directional sensitivity in the horizontal and vertical direction, the threshold circuit (THR) has an adaptive horizontal and vertical threshold value - adapting circuit (ADA) which produces the adaptive threshold values (HI and VI) via maximum value passing circuits (H MAX and V MAX) which are coupled to the memory (MEM) via an absolute value circuit (ABS2), a picture signal comparison circuit (COM2) and a signal combining circuit (AVE2), and by-passing it.