Abstract: An energy efficient radio having a clocking system utilizing two clocks with very different precision and power characteristics. In another aspect, the time that a radio spends on listening/receiving is optimized so that energy is not wasted when there is no need to keep receiving. In another aspect, to further improve the energy efficiency, two receive portions with drastic difference in power consumption, instead of a single receive portion as is used in a typical wireless receiver, and are used to process different parts of a received packet.
Type:
Grant
Filed:
May 19, 2008
Date of Patent:
July 9, 2013
Assignee:
ARGON ST
Inventors:
Harry Lee, Fred E. Schader, Bong K. Ryu, Liangping Ma, Hua Zhu
Abstract: The use of Protocol Enhancing Proxies (PEPs) and HAIPE encryption has traditionally been mutually exclusive. IP-layer encryption renders the upper layers, such as TCP, unavailable to the PEP. By integrating the IP layer encryption into the modem and using additive or multiplicative increase and decrease signals as bandwidth notification, signaling is provided across the cryptographic boundary to support the use of a bandwidth aware PEP in a network protected by IP-layer encryption.
Type:
Grant
Filed:
August 14, 2008
Date of Patent:
June 14, 2011
Assignee:
Argon ST
Inventors:
Frank Dell Kronewitter, III, Bong K. Ryu
Abstract: A physically compact, wideband signal activity identification, demodulation and characterization, and direction finding device incorporates multiple and cascadable digital signal processing modules operating in asynchronous real time. The digital signal processing modules include a device for data buffering, a device for digital signal processing (DSP), and a device for high-speed data routing. The module device for data buffering is composed of, among other memory devices, a First In Tap Out (FITO) data buffer that may be accessed at any point for delay or faster than real time resynchronization by the DSP module device. The module device for digital signal processing function incorporates a general purpose digital processor for respective module calculation of overlapped hyperchannelization Fast Fourier Transforms (FFT).
Type:
Grant
Filed:
December 10, 1999
Date of Patent:
May 24, 2005
Assignee:
Argon ST Incorporated
Inventors:
Joe Carlin, Terry Collins, Peter Hays, Barry E. Hemmerdinger, Robert L. Kellogg, Robert L. Kettig, Bradley K. Lemmon, Thomas E. Murdock, Robert S. Tamaru, Stuart M. Ware