130 results about "Real time communication systems" patented technology

A real-time communications device, a real-time communications system of networked distributed such devices and method and program product for operating such devices. The device includes a personal information manager (PIM), an instant messenger and a Messenger Assistant. The device may also include an e-mail client. The Messenger Assistant automatically provides appointment / status information from the PIM to the instant messenger, which passes status to identified buddies. The Messenger Assistant may also monitor local presence and e-mail and update status based on local presence changes and on incoming e-mail.

A real-time communications system that is capable of convening an on-line meeting or teleconference involving text, audio, video, and / or data between multiple users of mobile and non-mobile devices. A mobile telephone is operative to receive an invitation to join an on-line meeting with at least one user of another mobile or non-mobile device. If the mobile telephone network can provide an indication of whether the mobile telephone is powered-on and within the coverage area of the mobile telephone network, a real-time messaging server employs this information to determine the on-line presence of the mobile telephone user before transmitting the meeting invitation. Otherwise, the real-time messaging server assumes that the mobile telephone user is present and on-line. The mobile telephone user may indicate his or her desire to join the on-line meeting by transmitting an SMS message to the real-time messaging server in response to the meeting invitation, after which the real-time messaging system may convene the on-line meeting between the multiple users.

A rules-based real-time messaging system for groups of users, in which an availability status may be maintained in association with each user. Clients are communicably coupled to a real-time messaging server, which maintains indications of the online / offline presence status of each user, as well as other user attributes. Rules and a rules engine are maintained in the real-time messaging server for controlling the delivery of messages to users, and for controlling how the availability of users is provided to other users. Based on the specific rules stored on the real-time messaging server, the rules engine determines the state of various relevant conditions, such as the availability status of users of the system, and also detects the occurrence of various real-time events, such as a user logging-on to or logging-off from the system, in order to control the delivery of various types of messages and / or performance of resulting actions.

Embodiments of the invention provide systems and methods for providing an in-vehicle, multimedia, real-time communication system. According to one embodiment, a system for providing in-vehicle communication services can comprise a communications network and a vehicle user agent communicatively coupled with the first communications network, wherein the vehicle user agent publishes one or more published presence attributes. A Service Delivery Platform (SDP) can be communicatively coupled with the communications network. The SDP can provide a presence service adapted to receive the one or more published presence attributes from the vehicle user agent and update a presence profile for the vehicle user agent based on the received presence attributes. The presence attributes can comprise at least one attribute indicating information other than presence information and to provide one or more telco functions to the vehicle user agent.

A real-time communications system for initiating a real-time communications session involving a plurality of users that brings together the most appropriate individuals to participate in an on-line meeting or teleconference. A user who is a prospective participant in an on-line meeting or teleconference clicks on a hyperlink contained in a document to access a query form. Next, the user enters personal identifying information on the query form. Information relating to that user can also be included in parameters associated with the hyperlink. Next, the user clicks on a button associated with the query form to pass the personal identifying information to a real-time messaging server, which generates a request for an on-line meeting or teleconference, and provides the meeting request to one or more other specified users. Because the meeting request includes some or all of the information entered on the query form and included in the hyperlink parameters, the specified users can decide whether or not to join an on-line meeting or teleconference with the prospective participant based at least in part on the information provided.

Systems and methods are provided for multiple points of presence (MPOP) in the real time communication of data between or among users. More particularly, according to embodiments of the present invention, a messaging service network is provided that allows a user to connect to the messaging service network from multiple client devices and access features associated with the messaging service network from any one of the multiple client devices at any point in time. In this manner, a user can seamlessly transition among multiple client devices without interruption and access services provided by the messaging service network including, but not limited to, sending / receiving instant message (or “IM”) data to other user(s), publishing / subscribing presence to other user(s), making / receiving phone calls between user(s), etc.

Systems and methods of enhanced real-time communications between WiFi devices. In one embodiment of the present invention a method for enhanced payload protection in a WiFi system includes transmitting multiple copies of data packets in successive frame body transmissions. In another embodiment, a method for enhanced communications over a WiFi link includes examining a unit ID packet to determine a destination of a data payload when errors are detected in IP and / or MAC headers. If a destination is determined, the packet is corrected and forwarded to the device based on the unit ID determination. In another embodiment, a method for enhanced real-time communications in a WiFi network includes establishing a communications frame that includes an active timeslot, preferably based on U-APSD, for a WiFi device to use for transmission of successive audio data packets transmitted between the WiFi handset and AP.

A rules-based real-time messaging system for groups of users, in which an availability status is maintained in association with each user. Clients are communicably coupled to a real-time messaging server, which maintains indications of the online / offline presence of each user, as well as other user attributes. Rules and a rules engine are maintained in the real-time messaging server for controlling the delivery of messages to the users, and for controlling how the availability of users is provided to other users. Based on the specific rules stored on the real-time messaging server, the rules engine determines the state of various relevant conditions such as the availability of users of the system, and detects the occurrence of various real-time events such as a user logging-on to or logging-off from the system for controlling the delivery of various types of messages and / or the performance of resulting actions.

Error bursts are detected and corrected in a communication system using shortened cyclic codes, such as shortened Fire codes. Data is loaded into a first error syndrome register and a second error syndrome register. The data in the registers may be evaluated to determine if the data bits contain a correctable error. Shortened zero bits are shifted into the second error syndrome register. A number of zero bits are shifted into the first error syndrome register to trap an error burst pattern in the data. A determination is made as to the number of zero bits shifted into the second error syndrome register to trap the location of the error burst in the data. Using the number of zero bits shifted into the second error syndrome register and the error burst pattern, the error in the data is located and corrected.

Systems and methods to collect information over a connection with a caller just in time for further connecting the caller to a callee. In one embodiment, a connection server is configured to provide to a caller a reference associated with the first criterion, to identify the first criterion based on the reference used to establish a connection with the caller for real time communications, to obtain a second criterion from the caller over the connection established for real time communications, to identifying a callee based at least in part on the first criterion and the second criterion, and to connect the caller from the established connection to the callee for real time communications.

The invention relates to an automatic sound feedback detection and elimination method of a real-time communication system. The method is characterized by comprising steps that the audio data is acquired, and the historical squeaking estimation information is initiated; overlapping, windowing and FFT transformation of each frame of audio data are carried out to acquire the transformation data from a time domain to a frequency domain; a peak value power of the frequency domain data and a peak value interval are calculated; traversal of all the peak value information is carried out to acquire the present frame suspected squeaking frequency point information; the historical squeaking estimation information is updated through utilizing the peak value information and the present frame suspected squeaking frequency point information; the updated historical squeaking estimation information is analyzed, and present frame squeaking point determination is accomplished; a corresponding trap filter is generated according to a present frame squeaking point determination result. Through the method, sound feedback can be rapidly, accurately and effectively detected and eliminated, conversation quality is obviously improved, and the method has quite important application values in voice conferences and loudspeaker voice communication.

A “code optimizer” provides various techniques for optimizing arbitrary XOR-based codes for encoding and / or decoding of data. Further, the optimization techniques enabled by the code optimizer do not depend on any underlining code structure. Therefore, the optimization techniques provided by the code optimizer are applicable to arbitrary codes with arbitrary redundancy. As such, the optimized XOR-based codes generated by the code optimizer are more flexible than specially designed codes, and allow for any desired level of fault tolerance. Typical uses of XOR-based codes include, for example, encoding and / or decoding data using redundant data packets for data transmission real-time communications systems, encoding and / or decoding operations for storage systems such as RAID arrays, etc.

A control system for one or more power stacks in a power converter is disclosed, each power stack comprising a plurality of electronic switches, said control system comprising one or more controllers, wherein a distributed clock signal from a real-time communication system is used as synchronization means for the switches in the power stacks. One or more controllers controlling the switching times of the switches in one or more power stacks may be connected directly to one or more real-time communication buses of the real-time communication system, using the distributed clock signal for synchronization of pulses when using the one or more power stacks for pulse-width modulation of a desired AC output voltage. Furthermore, a power converter comprising such a control system and a wind turbine comprising such a power converter are disclosed.

The invention provides a system, a method, a browser and a cloud proxy server for providing a real-time web browser service for a browser. The system comprises a client-side, a real-time communication system, a back-end server and a cloud proxy server, wherein a browser and a real-time communication center run in the client-side, and the real-time communication center is used for acquiring a uniform resource locator (URL) request message and service information; the real-time communication system communicates with the browser in real time through a real-time communication channel; the back-end server is used for providing a browser service for the browser; and the cloud proxy server communicates with the real-time communication system in real time through a real-time communication channel and is used for receiving the URL request message and the service information, selecting the back-end server according to the service information, forwarding the URL request message to the selected back-end server, receiving a response message fed back by the selected back-end server and transmitting the response message and the service data to the browser in real time through the real-time communication system. According to the system, the expandability is good, the real-time property is realized, and the user experience can be improved.

The invention discloses a method for selecting a multi-user MIMO system antenna based on priority genetic simulated annealing. TU and TB superior chromosomes are selected from chromosomes contained in user ends and a base station end, priority crossover and variation operation is conducted, so that a group and a group are obtained to be used as initial groups of simulated annealing operation, then two genes are randomly selected from each chromosome in the two groups to be exchanged so that a novel group and a novel group can be obtained, a fitness difference value delta f of each chromosome in the and the , and the and the is calculated, if the delta f is smaller than zero, or the delta f is larger than or equal to zero, and the condition of is met, moving to a new state can be achieved, and if not cooling is carried out until the number m of simulated annealing iterations is reached. By means of the method, optimal antenna subsets of the user ends and the base station end are efficiently selected in a combined mode, strong robustness and optimizing capacity are achieved, the operating speed of the system can be effectively increased, the complexity of software and hardware in the implementation process of the system is lowered, system performance and hardware cost are made to be well compromised, and the method is suitable for real-time communication systems.

The invention discloses a rate reduction parameter optimization method based on a congestion degree factor. The rate reduction parameter optimization method is applied to a point-to-point multimedia real-time communication system based on an RTP / RTCP protocol. The method comprises the following steps of the receiving end adaptively selects a congestion threshold value according to the inter-frametime delay change condition, generates a state signal S by combining the queuing time delay change condition of the current frame and the congestion threshold value, and adjusts the sending rate according to the state signal. When the network is congested, the congestion degree is quantified, a rate reduction parameter is calculated according to the congestion degree, and the sending rate is controlled to be reduced as the step length; and finally,the final sending rate is calaculated by combining the estimated values of the rate control modules of the sending end and the receiving end to thesending rate. Compared with the prior art, the method can be suitable for various network environments, the incoming rate can be increased, the packet loss rate and the network delay can be reduced, and more stable and smooth multimedia real-time communication service can be brought to users.

A method and system for automatically routing a call to an identity of multiple identities based on an active presence profile. A subscription message is sent to a user's contact addresses. The contact addresses include identities of the user and indicators of remote servers that manage real time communication systems. A presence document that includes a presence status of a first identity of the user is received. The presence status indicates that the first identity is offline. A registration message is issued to a remote server, resulting in a call redirection from the first identity to a second identity. The second identity is included in an active presence profile and is associated with a computing system that receives the redirected call. If multiple presence profiles of the user are active, a matching algorithm selects a contact address of one of the active presence profiles to determine the call redirection.

The invention discloses a real-time communication method, a real-time communication system and real-time communication platform equipment; wherein the real-time communication method comprises the steps of receiving a media stream service request by the real-time communication platform equipment through a web interface, wherein the media stream service request is transmitted by a service initiating user, and the media stream request carries a service mode and a target parameter which are preset by the service initiating user; and processing the media flow service between the service initiating user and a target which corresponds with the target parameter by the real-time communication platform equipment based on a publisher / subscriber model according to the service mode. According to the media stream real-time propagation solution which is provided by the embodiment of the invention and is realized based on the publisher / subscriber model, a platform side can connect voice video flows among terminals, thereby supporting sharing innovative services of unilateral subscription, bilateral subscription, group subscription, etc. in a more flexible manner.

The invention discloses a wireless real-time communication system and method of a subsurface buoy. The system comprises a plurality of underwater subsurface buoys and a water surface buoy; the underwater subsurface buoy comprises a plurality of marine observation devices and a subsurface buoy underwater acoustic communication set; the marine observation device is used for observing and recording marine scientific data, and the subsurface buoy underwater acoustic communication set is used for sending observation data to the water surface buoy; and the water surface buoy comprises a buoy main body, and a buoy underwater acoustic communication set and a satellite communication module, which are arranged on the buoy main body, and the buoy underwater acoustic communication set receives the observation data sent by the underwater subsurface buoy through a multi-element underwater acoustic transducer, and sends the data to a data collection server through the satellite communication module.According to the system disclosed by the invention, as the subsurface buoy and the buoy are not connected by a communication cable, the system disclosed by the invention has the advantages of simple deployment mode and high reliability and the like; and the system disclosed by the invention prolongs the maintenance period of the subsurface buoy, so that the cost of maintaining the subsurface buoyby navigation can be greatly reduced.

The invention provides a client plug-in unit installation reminding system and method based on real-time message transmission, a client and a cloud terminal proxy server. The system comprises the client, a real-time communication system, a back-end server and the cloud terminal proxy server, wherein in the client, at least one application software runs; the mutual real-time communication between the client and the real-time communication system is realized through a real-time communication channel; the back-end server is used for providing plug-in unit reminding service and plug-in unit downloading service to the client; and the mutual real-time communication between the cloud terminal proxy server and the real-time communication system is realized through the real-time communication channel, and the cloud terminal proxy terminal is used for receiving the information of currently used software and the use information of the application software from the client, and forwarding the information of currently used software and the use information of the application software to the back-end server, receiving the plug-in reminding information fed back by the back-end server, and transmitting the plug-in reminding information to the client in real time through the real-time communication system. According to the system, the plug-in unit can be recommended based on the user demand; and the timeliness and accuracy can be ensured.