Abstract: A telecommunications device able to automatically detect a pending change in an area code or numbering plan area (NPA) during the period when either the new area code or the existing area code may be used to dial a particular number. Such a telecommunications device is configured to read an ISDN connected party number or an H.323 connected party number during the permissive period and compare the connected party number with the called party number. If there is a mismatch of the area code and the numbers otherwise match, the telecommunications device knows that an area code update is pending and advises the user thereof accordingly. Alternatively, the telecommunications device may itself automatically update speed dialing lists, routing tables, and the like.

Abstract: Method and apparatus are provided to prevent unneccessary execution of TCP/IP performance enhancing algorithms in a wireless communications network. The method includes monitoring acknowledgment message traffic between a sending unit and a receiving unit and preventing forwarding of an acknowledgment message to the sending unit when the acknowledgment message is a second duplicate acknowledgment message. The apparatus includes a first endpoint unit connected between a sending unit and a receiving unit. The first endpoint unit includes a monitor component to monitor acknowledgment message traffic between the sending unit and the receiving unit and a filter unit to prevent forwarding of a duplicate acknowledgment message to the sending unit until a predefined condition is met.

Abstract: A data communication apparatus such as a facsimile apparatus having an automatic telephone message recording function, having a common memory for storing video and audio data that have been received or are to be transmitted, enables selection of a method of memory management whereby the memory space is divided at a boundary address into two regions which respectively store video data and audio data and a method whereby the memory space is not so divided, but the video data and audio data are written into addresses which successively increase from respectively opposite ends of the memory space. Remaining amounts of memory capacity which can be used to store video and/or audio data can be displayed as respective numbers of standard document pages and telephone calls, the latter representing standard-duration recording intervals.

Abstract: A method and apparatus for determining the next router that a data packet is transmitted to on its way to a destination host by traversing a routing table using a hardware search engine and a unique search tree. The step of traversing each node in the search tree takes only one memory cycle, decreasing in half the time it takes to search a routing table and thus forward data packets on a system of computer networks. This is accomplished by storing the decision bit for each node in its parent node rather than in the node itself The apparatus may use a hardware search engine to search the routing table.

Abstract: A code indexing method for orthogonal variable spreading factor (OVSF) codes introduces a single number mapped to the each code. The new code number itself not only provides the code signature, but it is also used for the OVSF code generation. In addition, it provides easy and fast generation of the available code list without the help of look-up table. This capability improves the dynamic code assignment.

Abstract: A multistage analog circuit for independently controlling a bias current in each stage of the multistage analog circuit having an input stage, an intermediate stage, and an output stage, includes a first current source which controls the input stage of the circuit, a second current source which controls the intermediate stage of the circuit, and a third current source which controls the output stage of the circuit. The bias current in each stage of the circuit is set by the first, second, and third current sources. An output voltage of the circuit is capable of remaining the same when the first current source is changed to affect an input transconductance of the circuit.

Abstract: An optical wavelength division multiplex (WDM) demultiplexer can be provided in substantially passive form. In one embodiment a wavelength filter separates alternate channels to provide a first output containing even-numbered channels and a second output containing odd-numbered channels, each output having channels separated by a bandwidth twice the channel separation bandwidth of the original WDM signal.

Abstract: A unit cell including a substrate; an active circuit disposed on the substrate; and an arrangement disposed on the substrate for routing a plurality of conductors thereover. In the illustrative implementation, the routing arrangement includes first, second and third ground planes disposed on the substrate, a first layer of conductors disposed between the first and second planes, and a second layer of conductors disposed between the second and the third planes. Each cell is adapted to connect to a device such as a detector. The inventive unit cell enables an improved focal plane array design with a smaller unit cell supporting smaller detector sizes. Smaller detector pitch allows higher density detector arrays. The inventive fan-out approach allows for complicated circuitry to be located outside the array. This permits the utilization of more sophisticated analog signed processing, such as a multiple sample approach.

Abstract: An interleaving method including the step of (1) receiving a data sequence having a plurality of blocks, each having a length based on a prime number P; (2) generating sequence permutation data by performing a given operation on elements of a Galois field of a characteristic P; (3) permuting results of the given operation, so that sequence permutation data are generated; and (4) permuting a sequence of data of the data sequence in accordance with the sequence permutation data.

Abstract: The present invention provides an abstract, object-oriented encapsulation of the communications interface between intermediary, lower-level protocol handlers, such as TCAP server programs, and service providers, such as service application programs, that run on transaction server computers within an enhanced services platform, such as a network intelligent platform of a telecommunications carrier. The TCAP server programs exchange INAP messages with network switches through the SS7 protocol interface, forwarding the INAP messages received from network switches to service application programs, and receiving response messages from service application programs to be sent back to the network switches. The specialized INAP protocol handling software previously developed specifically for each different service application program is abstracted by the object-oriented communications interface into a set of library routines that can be shared in common by all service application programs and TCAP servers.

Abstract: The facsimile apparatus according to the present invention comprises a decision section for checking whether or not the document edit flag is ON when the document sensor detects a document. When the document edit flag is ON, this decision section decides that edited image data are stored in edited document storage area 14A. Then, this decision section checks whether or not to send both the edited image data and paper document. When it decides that both should be sent, this decision section checks whether or not the paper document should be sent first. If the paper document is sent first, this decision section checks whether or not the edited image data should be inserted into the paper document. If the operator selects “Yes”, this decision section decides that the paper document should be scanned by the scanner, sent one page at a time, and when the specified page appears the scanned image data should be sent followed by the rest of the paper document.

Abstract: A user's access patterns are accounted for in deciding to switch between a plurality of wireless networks 204, 206. A method according to one embodiment of the present invention includes monitoring a location of a wireless communication device 202 Within a region serviced by a first wireless communication network 204 and second region serviced by a second wireless communication network 206. The first and second region have an overlapping region which could be serviced by both networks. The future location of the wireless communication device 202 within the first and second regions is predicted based on the monitoring of the previous locations of the wireless communication device 202. When the wireless communication device 202 is detected as being within the overlapping region, the system determines whether to transfer an active connection between the wireless communication device 202 and one of the networks to the other network.

Abstract: The color card or display device of the invention has one or more paint color swatches or chips which are removable from a base and are repositionable and adhesively affixable to another substrate remote from the color card or display device. The color card with repositionable paint swatches provides swatches which may be remounted onto furniture, walls, other samples and fabrics to aid the consumer of the color to select the color on the swatch and match it with other colors and the environment for which the color is intended.

Abstract: The present invention is generally directed towards a system and method for providing a high speed switching driver to transmit data information. A first current is switched through a diode or shunted through an alternate path to selectively bias the diode. A second current can also be selectively switched through the diode to modulate a light energy output transmitted from the diode. Based on this configuration, fast bias-switching for generating a modulated laser diode output can be achieved by selectively switching the bias current through the diode or alternate path. Consequently, a solid state device can be controlled to transmit data information after a relatively minimal setup time delay to bias the diode.

Abstract: Methods and apparatus for enabling a program controlled switching system to setup a basic call directly to a specific B-Channel on an ISDN Primary Rate Interface (PRI) via a call initiated by line side equipment subtending the switch with the PRI and/or via a call initiated by equipment anywhere in the Public Switched Telephone Network (PSTN) and routed to the switch with the PRI. A primary application for such methods and apparatus is within Data Tandem Switches/Internet Concentrator Switches and End Office Switches with PRI connections for Internet Service Providers. For example, by facilitating a direct connection to a specific B-Channel using the invention, modem pool providers can quickly and efficiently verify the functionality of specific channels and their associated modems, as well as maintain and test other equipment and software associated a specific PRI B-Channel.

Abstract: A flame suppression cabinet for printed circuit boards includes intumescent material that expands at an elevated temperature to block ventilation openings in a top panel. Fire suppression plates are positioned between adjacent ones of a plurality of printed circuit boards positioned vertically on a shelf rack in side-by-side spaced-apart parallel relationship to prevent fire from spreading between the circuit boards.

Abstract: This invention relates broadly to rf coupling circuits enabling any platform-mounted antenna system and its associated standard broadcast-communications radio receiver, to also be used in conjunction with a navigational receiver. An exemplary embodiment of the invention is an antenna coupler for coupling a broadcast communications antenna with a broadcast communications receiver and a navigation receiver. The coupler includes independent rf paths for coupling the broadcast communications antenna to the broadcast communications receiver and to the navigation receiver.

Abstract: A system and method for efficiently assigning a plurality of channels among a plurality of nodes in a radio communications system. For each node in the system, a buffer zone is established. The members of a particular node's buffer zone are that subset of the plurality of nodes in the system that are prohibited from using a channel simultaneously with the particular node. When a particular node is in need of a channel assignment, the system will assign a channel to the particular node from a subset of channels that excludes channels assigned to nodes within the particular channel's buffer zone. A co-channel zone is for each particular node is also established which includes a subset of the plurality of nodes that is near the particular node, but excludes nodes outside the particular node's buffer zone.

Abstract: A modem or other telephone device (102, 502) is configured to identify (or receive notification of) the companding law used by a destination modem or telephone device. The telephone device (102, 502) can then, using stored conversion tables, predict the inverse mapping from the converted encoding law. Having done so, the telephone device (102, 502) can identify distorted portions of the decoded signal and modify the original signal before it is sent to the encoding or encoding-converter unit.

Abstract: A handheld client computer and a host computer are synchronized through a data channel, preferably a high-latency data channel, by transferring from the handheld client computer to a cache in the host computer a skeletal snapshot of the client records, including the identification and address of each of the client records. An up-transfer list of client records to be transferred from the client computer to the host computer is determined. The records on the up-transfer list are up-transferred from the handheld client computer to the cache of the host computer and associated with the skeletal snapshot, so as to be available to a record synchronization operation. A set of updated host records to be down-transferred is received from the record synchronization operation. The step of up-transferring is preferably initiated prior to the initiation of the step of receiving from the record synchronization operation.