Abstract: A method and apparatus are disclosed for detecting the removal of a device connected to a network. The present invention generates an alarm on a protected device when an unauthorized user disconnects the device from a network connection. The network connection is monitored and an alarm is generated if the protected device is disconnected from the network connection without proper notification to the theft protection utility. A number of fail-safe features can optionally be employed to ensure that the theft protection aspects of the present invention are not bypassed. For example, the theft protection utility process can employ speaker, volume and/or power control features to ensure that the alarms generated by the present invention, or the theft protection feature itself, cannot be bypassed.

Abstract: A method and apparatus are disclosed for detecting the removal of a device connected to a network. The present invention generates an alarm on a protected device when an unauthorized user disconnects the device from a network connection. The network connection is monitored and an alarm is generated if the protected device is disconnected from the network connection without proper notification to the theft protection utility. A number of fail-safe features can optionally be employed to ensure that the theft protection aspects of the present invention are not bypassed. For example, the theft protection utility process can employ speaker, volume and/or power control features to ensure that the alarms generated by the present invention, or the theft protection feature itself, cannot be bypassed.

Abstract: The present invention provides methods and systems for efficiently compressing information, such as speech data. By generating an excitation signal containing a number of zero and non-zero values and convolving the first signal with a known transfer function, a signal such as a codec residual signal can be compressed. While a convolution between any two signals can require a large number of multiply-and-accumulate operations, convolution between an excitation signal and impulse response can be made more efficient by multiplying only the non-zero values of the excitation signal with respective values of the impulse response.

Abstract: The present invention provides methods and systems for efficiently compressing information, such as speech data. By generating an excitation signal containing a number of zero and non-zero values and convolving the first signal with a known transfer function, a signal such as a codec residual signal can be compressed. While a convolution between any two signals can require a large number of multiply-and-accumulate operations, convolution between an excitation signal and impulse response can be made more efficient by multiplying only the non-zero values of the excitation signal with respective values of the impulse response.

Abstract: A method and apparatus are disclosed for detecting the removal of a device connected to a network. The present invention generates an alarm on a protected device when an unauthorized user disconnects the device from a network connection. The network connection is monitored and an alarm is generated if the protected device is disconnected from the network connection without proper notification to the theft protection utility. A number of fail-safe features can optionally be employed to ensure that the theft protection aspects of the present invention are not bypassed. For example, the theft protection utility process can employ speaker, volume and/or power control features to ensure that the alarms generated by the present invention, or the theft protection feature itself, cannot be bypassed.