Cisco Technology, Inc.

8x8, Inc.

8.times.8, Inc.

Weitek Corporation

Integrated Information Technology, Inc.

Other

Ykk Corporation

Obihai Technology, Inc.

Jan Fandrianto

Bryan R Martin

Sehat Sutardja

Chi S Wang

Sam Sin

Hedley K Rainnie

Michael C Chen

Hedley K J Rainnie

Steve Toteda

Tony T Wan

George K Chu

Arijanto Soemedi

Doug G Neubauer

Michael P Sadikun

Tarun Loomba

Matthew D Cressa

Budi Sutardja

Y W Sing

Ramah Sutardja

Chun-Chau Lin

Duat H Tran

A method and a system for detecting presence of an application layer gateway (ALG) in a network path between an analog telephone adapter and a communications service provider (CSP), and transmitting a media message by bypassing the (ALG) are provided. A communication management application (CMA) detects, processes, and augments the media message sent by a first user device to a second user device. A message relay server (MRS) processes and manages the media message. The CMA receives the media message from the first user device and detects the presence of the ALG using a message echo server. The CMA scrambles the media message and transmits the scrambled media message to the MRS via a network. The ALG is bypassed due to non-recognition of the scrambled media message. The MRS unscrambles the scrambled media message and transmits the unscrambled media message to the CSP for forwarding to the second user device.

Communications management and gateway bypassing system

In one embodiment, an apparatus may include a trunk service unit and at least one logical multimedia terminal adapter (L-MTA). The trunk service unit may be configured to provide session initiation protocol (SIP) service to at least one subscriber equipment in a subscriber network. Each subscriber equipment may have an associated subscriber equipment identifier. The trunk service unit may provide subscriber-facing signaling to communicate with the subscriber network and network-facing signaling to communicate with a stimulus-based network. The L-MTA may be associated with the stimulus based network and may be configured to obtain service from a call management server (CMS) in the stimulus-based network. Each L-MTA may have an associated L-MTA equipment identifier, where the network-facing signaling of the trunk service unit being used to control the at least one L-MTA.

Session initiation protocol communication with endpoints managed by a call management server in a stimulus based network

In one embodiment, a method includes receiving, at an IP private branch exchange (IP PBX), an event notification message from a user agent corresponding to a voicemail system. The event notification message includes a Request-URI field identifying a Uniform Resource Identifier (URI) of the IP PBX and a header field identifying a target mailbox. The method also includes identifying a URI corresponding to the target mailbox and forwarding the event notification message with a Request-URI field identifying the URI corresponding to the target mailbox.

Multiple voicemail account support for a VoIP system

A method of managing Voice over Internet Protocol (VoIP) calls with an Internet Protocol Private Branch Exchange (IP PBX) is provided, including: receiving at an IP PBX device an incoming call directed to a target telephone number, said IP PBX device storing a contact list parameter including one or more rule fields, each rule field including a telephone number identifier and an associated target extension identifier; searching the contact list parameter to identify the telephone number identifier corresponding to the target telephone number; and routing the incoming call to one or more target extensions corresponding to the target extension identifier associated with the identified telephone number identifier.

VoIP call routing

An IP telephone which supports a voice conference call with a plurality of other IP telephones over a packet-switched network is disclosed. The IP telephone exchanges audio and signaling messages with the other IP devices during the conference call, and thereby allows three or more conference call participants to talk together over the packet-switched network. The IP telephone includes a memory, which stores a conferencing module and a channel establishment module, and a mixing module for mixing input signals received at the IP telephone to produce a combined signal output. When played back, the combined signal output to allows the user to hear what was said by the other conference call participants.

System and method for supporting conferencing capabilities over packet-switched networks

A system and method are disclosed in which an initiating caller using a station connected to a data network receives advertisement information while waiting for a call to complete between the station and the receiving party. The station connects with a server that can access a database storing a plurality of advertisement information. The station includes a user interface, which allows the caller to interact with the station, and a flow controller, which monitors the bandwidth available to receive information from the server system.

System and method for providing on-line advertising and information

A method and system are disclosed in which an Internet subscriber can establish real-time voice conversations over the Internet. By performing a call negotiation scheme to identify and locate the other calling party, an Internet telephone can establish a voice communication channel over the Internet to a telephony or computer device.

Method and system for providing voice communication over data networks

An apparatus for multiplying and accumulating numeric quantities, including a multiplier for receiving the numeric quantities, with the multiplier having a sum output and a carry output. A first shift register has an input coupled to the sum output of the multiplier, and a second shift register has an input coupled to the carry output of the multiplier. An adder and third shift register are used to complete processing of the apparatus' arithmetic operations.

Apparatus for multiplying and accumulating numeric quantities

An IP telephone which supports a voice conference call with a plurality of other IP telephones over a packet-switched network is disclosed. The IP telephone exchanges audio and signaling messages with the other IP devices during the conference call, and thereby allows three or more conference call participants to talk together over the packet-switched network. The IP telephone includes a memory, which stores a conferencing module and a channel establishment module, and a mixing module for mixing input signals received at the IP telephone to produce a combined signal output. When played back, the combined signal output allows the user to hear what was said by the other conference call participants.

A programmable motion estimator includes one dual ported memory for storing an image block, the prediction error, and a temporary block used in interpolation, and a pixel-group random access dual ported memory for storing a search window. The two ports of the two memories are selectively applied to an arithmetic logic unit, or ALU, through a multiplexer. One output of the ALU provides an absolute difference, which is furnished to a tree adder. Another output of the ALU provides an average value or a difference value, as selected, which is routed to the inputs of the image memory and the search memory. In motion vector searching, the ALU performs pixel absolute difference arithmetic using the pixel groups from the image memory and from the search memory, and determines a sum of absolute differences in the tree adder. In half pixel interpolation, the ALU performs pixel averaging arithmetic using pixel groups from the search memory, and writes back to the search memory. In quarter pixel interpolation, the ACU performs pixel averaging arithmetic using pixel groups from the image and search memories, and writes back to the search memory. In some quarter pixel interpolations, temporary interpolated blocks from the image memory are used to interpolated quarter pixel blocks. These temporary blocks are obtained by pixel averaging in the ALU using pixel groups from the search memory. In error prediction determination, the ALU performs pixel subtraction using the pixel groups from the image memory and from the search memory, and writes back to the image memory.

Programmable architecture and methods for motion estimation

According to one embodiment, a cost-effective videophone communicates over a POTS line, and generates video data in a format for a selected display type. The device includes a video source to capture images and to generate video data representing the images; a telephone line interface circuit, including a signal transmission circuit and a signal receiver circuit; to transmit and receive video data over the telephone line; a memory circuit for storing a main program including video data processing consistent with at least one video-coding recommendation and for processing pixels for a certain display type; a programmable processor circuit for executing the code for processing pixels for a certain display type and, in response, causing image data to be output for display. The programmable processor circuit has a DSP section for compressing and decompressing video, and a RISC-type processor section for general control.

Video compression/decompression processing and processors

A multimedia processor contains a general purpose RISC and video processors which operate in parallel to execute software for combined video and audio bit stream coding and decoding. The RISC processor controls operation of the multimedia processor and performs bit stream parsing and coding, audio compression and decompression, and general processing for embedded applications. The video processor performs video encoding and decoding functions such as scaling, filtering, decimation, and DCT transforms. The RISC processor and the video processor each have separate data buses which are interconnected through a portal circuit and a Huffman codec. Each data bus has a DMA controller which transfers data to and from a memory interface to an external memory. DMA channels serve I/O interface resources coupled to the data buses and can form buffers in the external memory. This reduces the need for on-chip FIFO buffers and separate buffers between the multimedia processor and attached devices.

Integrated multimedia communications processor and codec

A programmable motion estimator includes one dual ported memory for storing an image block, the prediction error, and a temporary block used in interpolation, and a pixel-group random access dual ported memory for storing a search window. The two ports of the two memories are selectively applied to an arithmetic logic unit, or ALU, through a multiplexer. One output of the ALU provides an absolute difference, which is furnished to a tree adder. Another output of the ALU provides an average value or a difference value, as selected, which is routed to the inputs of the image memory and the search memory. Among other tasks, the programmable motion estimator performs motion vector searching, half pixel interpolation, quarter pixel interpolation and error prediction determination.

A vision processor includes a control section, a motion estimation section, and a discrete cosine transform ('DCT') section. The motion estimation section includes two memories, an image memory with two read ports and a write port, and a search memory with two read ports and a write port. The DCT section includes a DCT memory configurable as a two read, two write port memory and as a four read, four write port memory. The ports of these memories are selectively applied to various elements in the motion estimation path and the DCT path. In motion vector searching, the ALU performs averaging and difference operations on pixels in the frame and search memories. Data from the search memory is shifted for certain operations, before arithmetic operations in the ALU are performed. In DCT operations, transposition is done on word data read from the DCT memory in a shifter/transposer, which is shared with the motion estimation section, and the results written back to the DCT memory through the ALU operating in pass through mode. Multiply-accumulate operations are done in a multiplier-accumulator, which reads and writes-back to the DCT memory. Data transfers from the frame and search memories to the DCT memory may be performed in parallel with multiply-accumulate operations.

Growing community of inventors

Los Gatos, CA, United States of America

Jan Fandrianto