Abstract: An indoor location awareness method for locating a device using device-observable signals of known proximity sensors and device-unobservable signals of known proximity sensors. The exclusion of the possibility that the device is within an unobservable proximity sensor's range increases the knowledge of the device's true location. In addition to defining the location of the device, the device can predict the arrival and departure of unobservable proximity sensors as it moves throughout the environment.

Abstract: A data safeguarding system, method, and article for safeguarding an encrypted data-stream transmitting on a first channel from a first system to a second system. The data-stream can be intertwined with other data-streams. The data-stream is arranged in fixed length sequential blocks, each block including a header portion and a payload portion. The first system places a flag marking in the header portion indicating that the payload includes a tag having at least one identifier for selecting the decryption keys from the first system. The second system reads the flag, and if the flag indicates a tag portion, reads the tag portion. The second system transmits the identifier to the first system on a second channel. The first system reads the identifier, retrieves the keys, and transmits the decryption keys to the second system on the second channel. The second system receives the decryption keys and decrypts the data block using the decryption keys.

Abstract: Software on one system may query nodes which need to be addressed by clients on the system to determine whether those nodes are accessible. The software may query those nodes by sending a discovery message to those nodes and monitoring for a discovery response. If the discovery response is received, the software clients may be notified that the connection is existing and can be used to access the remote nodes.

Abstract: The present invention provides a system and method to efficiently round real numbers. The system includes a rounding apparatus to accept an input value that is a real number represented in floating-point format, and to perform a rounding operation on the input value to generate an output value that is an integer represented in floating-point format. The system also includes a memory to store a computer program that utilizes the rounding apparatus. The system further includes a central processing unit (CPU) to execute the computer program. The CPU is cooperatively connected to the rounding apparatus and the memory.

Abstract: An apparatus, method, and program product for optimizing code that contains dynamically-allocated memory. The aliasing behavior of internal pointers of dynamically-allocated memory is used to disambiguate memory accesses and to eliminate false data dependencies. It is determined whether a dynamically-allocated array will behave like a statically-allocated array throughout the entire program execution once it has been allocated. This determination is used to improve the instruction scheduling efficiency, which yields better performance.

Abstract: Embodiments of a technique for computing a Euler vector for a color image are disclosed.