Abstract: A method is provided for transmitting data packets over a bi-directional contention and reservation based network. The network includes an operably linked system controller for receiving upstream channel packets and originating downstream channel packets. At least one operably linked remote terminal is included for receiving the downstream channel packets and originating the upstream channel packets. The system controller provides periodically allocated grants to the at least one remote terminal in the downstream channel for scheduling data packet transfers in the upstream channel. The periodically allocated grants have a fixed bandwidth size. The system controller also provides dynamically allocated grants to the at least one remote terminal in the downstream channel upon request of the at least one remote terminal for scheduling data packet transfers in the upstream channel. The dynamically allocated grants are of a requested bandwidth size.

Abstract: A method and apparatus is disclosed for disseminating information associated with an active conference participant in a conference call to conference participants. Information is disseminated by associating the conference participants with participant information, identifying an active conference participant supplying data to a conference bridge for broadcast to the other conference participants, and transmitting at least a portion of the participant information associated with the active conference participant over a data network to the conference participants substantially concurrent with the broadcast of the data by the conference bridge.

Abstract: A method is provided for transcoding between video signals in two standards, DV and MPEG-2, each standard including discrete cosine transform (DCT) compressed signals. The each of the signals have macroblocks containing a plurality of DCT blocks. The DCT blocks are quantized according to respective quantization methods defined by the standards. The coefficients in each block are zigzag scanned, run-length coded and variable-length coded. The process variable-length decodes the coefficients and translates the quantized coefficients in the DV standard into quantized coefficients in the MPEG standard without fully dequantizing at least some of the DV coefficients and without performing an inverse DCT operation on any of the DCT coefficients. DV blocks that are encoded in a 248 format are translated into an 88 format before they are converted to MPEG-2 blocks. A method for transcoding from MPEG-2 to DV is also described.

Abstract: Presence and availability information is disseminated through a computer system architecture having four interactive elements. A schedule publication element acquires information about user schedules. A schedule management element communicates with the publication element to acquire schedule information and to store integrated schedule information in a storage system. A schedule distribution element acquires schedule information from the schedule management element and selectively disseminates the information to subscribers who have interacted with a schedule subscribing element. Both current and future presence and availability information is thus collected and disseminated in an orderly manner.

Abstract: The middleware discoverable service allows extensive dynamic profiling with respect to devices, control points and users. An XML-based discoverable service implements SOAP control and is capable of GENA eventing. This is made possible through a profiling service, compliant with UPnP protocols, which manages profile objects containing profile information of devices, users and/or services. Control points on the UPnP network may subscribe to the profiling service to receive up-to-date information about relevant profile information.

Abstract: An improved services gateway environment is provided within a gateway framework. The improvement comprising a SIP service architecture that enables SIP entities to register with itself and translates such registrations into gateway aware registrations.

Abstract: Network conditions are dynamically measured to extract quality of service condition information that is then translated based on a set of predetermined rules to generate a profile. The profile is configured as structured data about the dynamic state of the network. The profile can be propagated across the network to one or more different locations and to one or more different servers or end users, allowing those systems to adapt to network conditions in real-time.

Abstract: Data packets are received by the REDP traffic conditioning marker from the upstream domain and each have a red, yellow, or green priority level. The traffic conditioning marker monitors the rate of green data packets flowing through the A random early demotion and promotion (REDP) traffic conditioning marker is located between an upstream domain and a downstream domain. If the rate exceeds a negotiated rate, the traffic conditioner randomly and fairly demotes green packets to yellow. If the rate is less than the negotiated rate, the traffic conditioner randomly and fairly promotes yellow packets to green. The traffic conditioner removes the phase effects that occur in conventional markers.

Abstract: An apparatus and method for secure data handling in a distributed network is implemented by a secure agent connected by a secure channel to a primary communication unit, secondary communication unit, and clients. The primary communication unit and secondary communication units are connected to separate key-stores having keys. A method using distributed keys for encryption and decryption is disclosed. Another method utilizes multiple-time keys.

Abstract: An apparatus and method for performing bitplane coding with reordering, that may be used in a Fine Granularity Scalability (FGS) system. The apparatus and method reorder coefficients each time after a bitplane is coded. By reordering, the apparatus and method separate the coefficients into two groups. When coding a bitplane, bits in the first group are copied into the bitstream, while the bits in the second group are subject to common run-length, VLC, or arithmetic coding. The apparatus and method may also be used with or in a conventional SNR, temporal and/or spatially scalable architectures, for example, as utilized within an MPEG-4 framework.

Abstract: In a video encoder/decoder, a method processes a discrete cosine transform (DCT) block of coefficients. The method receives a DCT block of coefficients, and linearizes the DCT block of coefficients into a one dimensional array of sequentially arranged coefficients. The method stores a portion of the one dimensional array of coefficients in a register, the portion including at least two sequentially arranged coefficients. The stored portion of coefficients in the register is processed. A next portion of coefficients in the one dimensional array is processed. This is repeated until the entire DCT block of coefficients have been loaded into the register. The processing may include computing a run length value, finding a class number, or determining dequantized coefficients of a DCT block.

Abstract: A simple and efficient scheme is used to predict the number of bits needed to block of discrete cosine transform (DCT) coefficients with variable length coding (VLC). The scheme defines an easily computable parameter that has a strong correlation with the number of bits needed to encode the DCT data. Then a second order polynomial is developed to approximate the correlation and is used to predict the number of VLC bits that will be produced if a corresponding quantization matrix is used. The approach can be used to streamline the encoding/transcoding process for DV, and the result on that is presented. A further feature is the ability to present multiple results for multiple quantization matrixes.

Abstract: Error resilient methods and apparatus for coding, transmitting and/or storing digital multimedia data are disclosed. Digital multimedia data is organized into channel blocks, which include columns of data. A priority is determined for each channel block, based on the data within the channel block. Different forward error correction (FEC) procedures may be selected for the channel blocks based on their priority. Also, channel blocks may be transmitted on different transmission channels, and/or stored on different storage elements, based on their priority. Also disclosed is the coding, as pre-interleaved channel blocks, of digital multimedia data having fixed-length segments. The fixed-length segments are ordered and arranged in pre-interleaved channel blocks containing rows and columns. Pre-interleaving of a channel block arranges consecutive fixed-length segments along its columns. FEC data is determined for each row and included in the channel block. The channel blocks are packetized along the columns.

Abstract: An event programming guide for scheduling and retrieving items on a video display. The event programming guide includes a virtual analog clock interface disposed on the video display. The event programming guide includes a display interface medium that facilitates activation of an item selection feature for manipulating the items of interest on the video display for scheduling/retrieving and further programming.

Abstract: A global positioning system (GPS) is provided for displaying static cartographical data in accordance with a GPS signal and integrating dynamically updated data during display. The GPS system includes a receiver responsive to the global positioning signal. The receiver has a first communication module responsive to a signal of a content provider. The signal of the content provider defines dynamic content. The receiver has a data processor for integrating the dynamic content with the static cartographical data. A display device of the GPS system displays the integrated cartographical data and dynamic content. In this way, the dynamic content is provided to the global positioning system to alert an operator of traffic patterns and hospitality venues in relation to displayed static cartographical data.

Abstract: A global positioning system (GPS) is provided for displaying static cartographical data in accordance with a GPS signal and integrating dynamically updated data during display. The GPS system includes a receiver responsive to the global positioning signal. The receiver has a first communication module responsive to a signal of a content provider. The signal of the content provider defines dynamic content. The receiver has a data processor for integrating the dynamic content with the static cartographical data. A display device of the GPS system displays the integrated cartographical data and dynamic content. In this way, the dynamic content is provided to the global positioning system to alert an operator of traffic patterns and hospitality venues in relation to displayed static cartographical data.

Abstract: An entertainment device is provided for adaptively tuning to a content signal. The entertainment device includes a receiver responsive to content signals provided to the entertainment device. A selected channel of the receiver provides an output signal to an output terminal of the automobile entertainment device. A data processor is operably linked to the receiver for receiving a signal index of the content signal. The data processor is responsive to a predetermined signal index for actuating the receiver to select the specific channel corresponding to the predetermined signal index. A memory stores the predetermined signal index in accordance with an operator preference. Thus, the predetermined signal index enables the entertainment device to adaptively adjust to an operator's preferred content.

Abstract: A global positioning system (GPS) is provided for displaying static cartographical data in accordance with a GPS signal and integrating dynamically updated data during display. The GPS system includes a receiver responsive to the global positioning signal. The receiver has a first communication module responsive to a signal of a content provider. The signal of the content provider defines dynamic content. The receiver has a data processor for integrating the dynamic content with the static cartographical data. A display device of the GPS system displays the integrated cartographical data and dynamic content. In this way, the dynamic content is provided to the global positioning system to alert an operator of traffic patterns and hospitality venues in relation to displayed static cartographical data.

Abstract: A global positioning system (GPS) is provided for displaying static cartographical data in accordance with a GPS signal and integrating dynamically updated data during display. The GPS system includes a receiver responsive to the global positioning signal. The receiver has a first communication module responsive to a signal of a content provider. The signal of the content provider defines dynamic content. The receiver has a data processor for integrating the dynamic content with the static cartographical data. A display device of the GPS system displays the integrated cartographical data and dynamic content. In this way, the dynamic content is provided to the global positioning system to alert an operator of traffic patterns and hospitality venues in relation to displayed static cartographical data.

Abstract: A portable computer is configured to receive programming that is automatically updated by a subscription service. The portable computer includes a facility to connect to one or more subscription services on or through a host computer. The portable computer identifies itself to the subscription service and automatically receives updates for any services registered to it. A log file records information and stimuli received by the portable computer. The subscription service uses the log file to update subscriptions. One embodiment of the portable computer is configured to fit within a shell representing a character or object associated with a subscription. The portable computer may include one or more interface ports allowing the portable computer receive stimulus from sensors in the shell and or to activate transducers in the shell. In one embodiment of the invention, the portable computer is coupled to a cellular telephone.