Abstract: The present invention calculates a product of the present sampling data by the sampling data 1 data unit ahead through multiplier 14, adds up product values calculated for every sampling by going back to the time point 1 data unit ahead through adder 16 and detects a reference timing with regard to a CP signal using the addition value.

Abstract: Apparatus and methods for managing key material in cryptographic assets are disclosed. The methods can include defining first key material to be delivered to a cryptographic asset, wherein the first key material has a cryptoperiod having an expiration. Second key material to be delivered to the cryptographic asset is also defined. An automatic delivery of the second key material is scheduled such that the second key material will be delivered automatically to the cryptographic asset at or before the expiration of the cryptoperiod of the first key material. The methods can include defining a set of equipment classes, and registering at least one cryptographic asset with each equipment class. Cryptographic assets selected from the registered cryptographic assets are grouped into secure communication services, thereby defining secure communication interfaces between the cryptographic assets.

Abstract: The present invention calculates a difference between present sampling data and sampling data 1 data unit ahead, cumulatively adds up difference values calculated for every sampling by going back to the time point ahead by the number of samples of a CP signal inserted into an initializing signal and confirms the position of the CP signal from the sample number for which this cumulative value indicates a minimum value.

Abstract: A technique for efficient implementation of pilot signals on a reverse link in a wireless communication system. An access channel is defined for the reverse link such that within each frame, or epoch, a portion is dedicated to sending only pilot symbols. Another portion of the frame is reserved for sending mostly data symbols; however, within this second portion of the frame, additional pilot symbols are interleaved among the data symbols. The pilot symbol or preamble portion of the access channel frame allows for efficient acquisition of the access signal at the base station, while providing a timing reference for determining the effects of multipath fading. In particular, a pilot correlation filter provides a phase estimate from the pilot symbols in the preamble portion, which is then used to decode the data symbols in the payload portion. An access acquisition portion of the receiver uses the phase estimates provided by the pilot correlation filter to process the output of a data symbol correlation filter.

Abstract: A system and method within a multimedia messaging system for automatically enabling the system to notify a user that his or her mailbox is full and therefore no longer accepting messages for storage. The system includes one or more mailboxes to receive and store messages from callers, a capacity calculator to determine whether the messages stored in the mailbox exceed the allotted amount of storage space and a message transmittal unit to enable one or more notification alerts to be generated in response to the capacity calculator determining that the mailbox is full.

Abstract: A number resource management system for automatically managing number resources implements a Web-based client-server application for accessing and updating information pertaining to a number resource in a stored repository of number resources. Each number resource has an associated unique customer identifier and an associated status attribute. A Web/browser-based interface device enables communication between a business client and an accessing server, the interface device directing the server to retrieve and update information relating to a number resource according to a unique customer identifier and/or a status attribute input.

Abstract: An improved public telephone system for providing telephony service access. In particular, the improved public telephone provides for telephony service access responsive to the use of any of a plurality of types of smart cards, each of the plurality of types of smart cards corresponding with a different one of a plurality of financial institutions. Such enhanced access is provided through the utilization of a plurality of security access modules, each of the plurality of security access modules corresponding with a different one of the financial institutions.

Abstract: A CPU speed control system for use in devices having microprocessors or microcontrollers which may also be operated using battery power. The system includes a programmable frequency synthesizer for providing the CPU and other system buses in the device with a variable clocking frequency based on the application or interrupt being executed by the device. The frequency synthesizer output may be dynamically varied according to a particular application or task that is to be executed by the device or based on total CPU usage. The operating system of the device and the CPU are both capable of controlling the frequency synthesizer output to ensure that the CPU is operating at the most power efficient level possible.

Abstract: An adaptable communication system provides capability to change the format of multimedia files being transmitted over a data network in real-time. Incorporated into a network server is a processor and other functionality for downloading multimedia files and then recreating the files to accommodate different download formats. A file may be created that is appropriate for real-time playing for a 14.4 k modem connection as well as an high-bandwidth line, such as an ADSL line connection. A separate file is created in the network server for these different type of connections. Also incorporated into each of the newly created multimedia files are reference marks which are located at the same playing interval for each of the files. Once a system user has accessed and is viewing a multimedia file as it is being downloaded, an interface connection may detect that noise or other problems on the network are decreasing the quality of the playback.

Abstract: A teleconference recording and marking system for use by a plurality of teleconference participants includes a plurality of telephones with each having a mechanism for transmitting a voice signal and a marking signal. A mechanism is provided for establishing a communications link between the telephones. Another mechanism is used for recording the audible voice signals and marking signals transmitted from the telephones in a digital data stream. Also included is a mechanism for determining a plurality of time offsets with each time offset measured from a known location in the data stream to each marking signal. A storage mechanism is included for storing the data stream and time offsets. Lastly, a player mechanism is provided for playing the data stream starting at any one of the time offsets. The system combines the use of telecommunication and computer networks in order to allow teleconferences to be recorded and marked and later retrieved and played.

Abstract: A system and method for telephone trouble reporting. One aspect of the present invention is a context-sensitive graphical user interface (GUI). The GUI allows a user to select a trouble reporting option at various stages of a telephone call in a telephony-over-LAN system. Thus, a series of menus listing potential call difficulties are provided in the interface of the digital or IP phone or telephony-enabled computer to the user during the telephone call. Selecting one of the options allows the user to report the problem to the server or other central switch.

Abstract: Methods and apparatus for enabling collaboration with web pages and other resources is described. A method includes the step of establishing a collaboration session between a first client and a second client. A requested resource is cached with the session host in response to a request having a first uniform resource locator (URL) issued by the first client, if the requested resource is a pre-determined type of resource. A second URL is provided to the second client. The second URL identifies the requested resource or the cached resource in accordance with whether the requested resource is cached. Apparatus for enabling collaboration includes a web server, a cache, and a filter. The web server provides a requested web page in response to a first client's request. The filter stores the requested web page in the cache, if the requested web page is a pre-determined type of web page. A number of pre-determined characteristics for caching are described in various embodiments of the methods and apparatus.

Abstract: Provided with a method of performing power control in a CDMA mobile communication system, characterized by including the steps of: repeatedly updating information concerning the change of a channel state between a mobile station and a base station at regular intervals; varying a channel gain up/down time and/or a channel gain up/down delta adaptively based on the updated information; and adjusting the channel gain between the mobile station and the base station.

Abstract: The present invention is directed to a method and apparatus for adjusting the viewing angle of a liquid crystal display. In a preferred embodiment of the present invention, a plurality of digital-to-analog converters are arranged in pairs which have a fixed relationship. By determining appropriate values for the digital-to-analog converters, a desired viewing angle may be obtained for a liquid crystal display.

Abstract: System and method for synchronizing transaction data in real-time within a network environment. The system and method include and involve a plurality of authentication subsystems. Each authentication subsystem has a data storage subsystem and a processor. The processor is operative to receive a service request from a network user, and to authenticate the network user within the network environment in accordance with the service request. The service request causes a state stored within the data storage subsystem and related to the network user to change. The processor is further operative to transmit a synchronization request in real-time within the network environment, to receive another synchronization request from another authentication subsystem of the plurality of authentication subsystems, and to allow the processor to subsequently authenticate the network user within the network environment in accordance with the other synchronization request.

Abstract: An integrated reliability enhancement device for providing high reliability operation of a personal computer is preferably embodied in an add-in card for insertion into a bus slot of the personal computer. The add-in card includes monitoring circuitry for detecting an array of events associated with operational failure of the computer including failure of a cooling fan, out-of-range temperature fluctuations within the computer housing, out-of-range deviations in power supply input voltage, out-of-range deviations in power supply output voltage, and out-of-range deviations in line current consumption by the computer. Upon detection of one of the events, data associated with the failure is written into an add-in card memory which is accessed periodically by application software of the host computer.

Abstract: Linearization circuitry for predistortion of an input signal to an amplifier having a given distortion characteristic, including a correction circuit, which receives a stream of samples of the input signal at a high sample rate and which applies a correction to the samples responsive to the given distortion characteristic. The corrected samples are preferably low-pass filtered. A decimation circuit receives the corrected samples from the correction circuit and reduces the sample rate of the stream for output to the amplifier, to a reduced rate substantially less than the high sample rate. The present invention enables significant parts of the circuitry to operate at much lower sample rates that previously achievable and lends itself naturally to parallel implementations.

Abstract: The invention is a system for providing virtual connections through an ATM interworking multiplexer on a call-by-call basis. A signaling processor receives signaling for a call and selects the virtual connection for the call. The signaling processor generates new signaling that identifies the selection and transfers the new signaling to the ATM interworking multiplexer that accepted the access connection for the call. The multiplexer converts user information from the access connection into ATM cells for transmission over the virtual connection in accord with the new signaling.

Abstract: A cost-effective power supply for providing full time electrical power to a customer premises telecommunications hub is disclosed. The supply includes an AC to DC power converter for converting power from the AC power grid to a DC voltage suitable for operating telecommunications equipment and for maintaining a backup battery at a fully charged float voltage. The converter includes a first rectifier section for generating an unregulated DC voltage. This voltage is switched through the primary of an isolation transformer by a pulse width modulated voltage controller. The output of the transformer is connected to a second rectifier circuit and filter to produce a regulated DC output voltage. The regulated voltage is connected to a voltage correction circuit through a divider including a temperature compensator so that the feedback to the voltage controller causes the regulated output voltage to follow the battery float voltage at all temperatures.