Abstract: A random number generator that generates random numbers based on measurements of one or more environmental quantities. The random number generator includes a first sensor for generating a first sequence of digital values representing measurements of a first environmental quantity at successive times. A first compressor that provides a first sequence of compressed values having a lower internal correlation than the values of the first sequence of digital values compresses the sequence of digital values. The random number generator generates an output random number via a circuit for generating a random number from an input sequence of digital values, the input sequence being a function of one of the first sequence of compressed values. The circuit may utilize a hash function to provide further security. In addition, the circuit includes a blocking circuit for preventing the generator from outputting a random number if the input sequences fail a predetermined test.

Abstract: A digital audio system configured to facilitate a collaborative audio session comprises a first digital audio device operable by a first user, a second digital audio device operable by a second user independently of the first digital audio device, and a server configured to communicate with the first digital audio device and the second digital audio device over a network, receive a request from at least one of the digital audio devices for participation in a collaborative audio session, and facilitate communication between the first digital audio device and the second digital audio device.

Abstract: An exemplary apparatus for providing VoIP services comprises: (a) a telephone hardware interface connectable to a POTS network; (b) a VoIP gateway connectable to a VoIP network; (c) a bridge operable to interconnect a POTS session over the telephone hardware interface with a VoIP session over the VoIP gateway; and (d) an input/output interface that is connected to at least one of the telephone hardware interface, the VoIP gateway, and the bridge, and which is also connectable to a telephone.

Abstract: A digital audio system configured to facilitate a collaborative audio session comprises a first digital audio device operable by a first user, a second digital audio device operable by a second user independently of the first digital audio device, and a server configured to communicate with the first digital audio device and the second digital audio device over a network, receive a request from at least one of the digital audio devices for participation in a collaborative audio session, and facilitate communication between the first digital audio device and the second digital audio device.

Abstract: A random number generator that generates random numbers based on measurements of one or more environmental quantities. The random number generator includes a first sensor for generating a first sequence of digital values representing measurements of a first environmental quantity at successive times. A first compressor that provides a first sequence of compressed values having a lower internal correlation than the values of the first sequence of digital values compresses the sequence of digital values. The random number generator generates an output random number via a circuit for generating a random number from an input sequence of digital values, the input sequence being a function of one of the first sequence of compressed values. The circuit may utilize a hash function to provide further security. In addition, the circuit includes a blocking circuit for preventing the generator from outputting a random number if the input sequences fail a predetermined test.