公开(公告)号：US5067104A

公开(公告)日：1991-11-19

申请号：US45904

申请日：1987-05-01

申请人： Anjur S. Krishnakumar ,  Bala Krishnamurthy ,  Krishan K. Sabnani

发明人： Anjur S. Krishnakumar ,  Bala Krishnamurthy ,  Krishan K. Sabnani

IPC分类号： H04L29/02 ,  G06F13/00 ,  G06F13/38 ,  H04L29/06

CPC分类号： G06F13/387 ,  H04L29/06 ,  H04L69/06 ,  H04L69/12 ,  H04L69/18 ,  H04L69/22

摘要： In a programmable protocol engine, a core central processor implements a plurality of programmable finite state machines that perform context-dependent operations, and programmable satellite processing units that perform context-free operations. To assist in buffering the two way communications of the protocol engine, a memory is included which interacts with the central processor and the satellite units. The programmability of the protocol engine is achieved by realizing the satellite units with combinations of a processing unit and a memory unit which stores the instructions to be performed by the corresponding processing unit. The sequence of instructions to be performed is drawn from a small unique set of instructions which are adapted particularly to the tasks associated with protocol implementations. Instruction ports are provided for loading the necessary instructions to the satellite units and the central processor, thereby implementing a chosen protocol. To permit use of the protocol engine in environments where a plurality of users are multiplexed onto a single physical link, additional means are provided for storing the state of the finite state machines within the central processor, and for restoring the finite state machines to a previously stored set of states.

公开(公告)号：US5038307A

公开(公告)日：1991-08-06

申请号：US428573

申请日：1989-10-30

申请人： Anjur S. Krishnakumar ,  Mostafa H. Sherif

发明人： Anjur S. Krishnakumar ,  Mostafa H. Sherif

IPC分类号： G06F11/26 ,  G06F9/45 ,  G06F11/34 ,  G06F17/50

CPC分类号： G06F11/34 ,  G06F17/504

摘要： A method and apparatus is disclosed for determining an objective measure of performance of an extended finite state machine. Many modern complex systems, for example, computer communications protocols and computer or machine user interfaces, can be represented as extended finite state machines. A formal description of the extended finite state machine is employed to obtain a canonical form description. The canomical form description, combined with a service description, is used to generate a list of canocial state transitions transited by the extended finite state machine to perform the service. From this list, an objective measurement of performance, e.g., the time required to perform a particular service, is obtained. This objective measurement may then be used as desired, for example, to select an optimum extended finite state machine from a plurality of extended finite state machines.

公开(公告)号：US20130194434A1

公开(公告)日：2013-08-01

申请号：US13588637

申请日：2012-08-17

申请人： Anjur S. Krishnakumar ,  Bengi Karacali-Akyamac

发明人： Anjur S. Krishnakumar ,  Bengi Karacali-Akyamac

IPC分类号： H04N17/00

CPC分类号： H04N7/148 ,  G06K9/00228 ,  G06K9/036 ,  H04N17/004

摘要： System and method to detect video quality degradation in a video stream received by a telecommunications endpoint, the method including: locating reference features characteristic of content in the received video stream; calculating reduced reference features from the located reference features; receiving reduced reference features of a transmitted video stream, the transmitted video stream corresponding to the received video stream; calculating a distance between the reduced reference features in the received video stream and the reduced reference features of the transmitted video stream; and detecting video quality degradation when the calculated distance exceeds a predetermined threshold.

摘要翻译： 用于检测由电信端点接收的视频流中的视频质量下降的系统和方法，所述方法包括：定位所接收的视频流中内容的特征参考特征; 从定位的参考特征中计算缩小的参考特征; 接收所发送的视频流的减少的参考特征，对应于所接收的视频流的所发送的视频流; 计算所接收的视频流中的缩小参考特征与所传输的视频流的缩小参考特征之间的距离; 以及当所计算的距离超过预定阈值时检测视频质量劣化。

公开(公告)号：US07583961B2

公开(公告)日：2009-09-01

申请号：US10834291

申请日：2004-04-28

申请人： Martin Kappes ,  Anjur S. Krishnakumar ,  P. Krishnan

发明人： Martin Kappes ,  Anjur S. Krishnakumar ,  P. Krishnan

IPC分类号： H04Q7/20

CPC分类号： H04W16/18 ,  H04W16/20 ,  H04W24/02

摘要： A method and apparatus are provided for obtaining a signal strength model for an access point at an arbitrary location, q, at a site. Signal strength measurements are obtained for each of n sampling points; the signal strength received at the arbitrary location, q, is computed from each of the sampling points (for example, using reciprocity principles); signal strength estimates corresponding to the signal received at the sampling points from the arbitrary location are computed; and a signal strength model is determined for an access point positioned at the arbitrary location, q.

摘要翻译： 提供了一种方法和装置，用于在现场的任意位置q获得接入点的信号强度模型。 对于n个采样点中的每一个获得信号强度测量; 从任意位置接收的信号强度q从每个采样点计算（例如，使用互易原理）; 计算与从任意位置的采样点接收的信号相对应的信号强度估计值; 并且为位于任意位置的接入点q确定信号强度模型。