Patents Represented by Attorney, Agent or Law Firm Charles L. Warren
  • Patent number: 5473531
    Abstract: A set of indexes associated with each state of the finite state machine provides an address locator to a location in memory of a microprocessor where sets of logical vectors are stored. A count stored in a group of logical vectors identifies the number of stored logical vectors and hence, permits memory allocation to vary depending upon the number of logical conditions to be applied for a given test. A predetermined null value entered in an index is interpreted by the finite state machine as requiring no further processing and having no corresponding memory allocated for logical vectors.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: December 5, 1995
    Assignee: AT&T Corp.
    Inventors: Alan R. Flora-Holmquist, Thomas L. Mills
  • Patent number: 5459841
    Abstract: Conventional AND vectors are compared to corresponding input vectors of the same length as part of the logic processing associated with the finite state machine. AND vectors having a single set bit are translated into AND index vectors in which the bit position of the single set bit is encoded. AND index vectors are also identified by an index flag. The encoded bit position is utilized to identify the corresponding bit position in the input vector to perform a TRUE/FALSE test to determine an overall TRUE or FALSE indication. This technique avoids a bit by bit comparison for AND vectors having a single set bit.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: October 17, 1995
    Assignee: AT&T Corp.
    Inventors: Alan R. Flora-Holmquist, James D. O'Grady
  • Patent number: 5459396
    Abstract: A test fixture is provided for testing electrical characteristics associated with a printed circuit board (PCB). Spaced-apart solenoids each have an extendible arm aligned along an axis defined by a connector assembly on the PCB to be tested. The arms are located to have sufficient travel to engage the side of the connector assembly. A mechanism is provided which detects which of the arms engage the connector assembly. Arm engagement data is stored in memory of a PC for type of connector assembly to be tested by the apparatus. A mechanism is provided for determining if a correct test program has been selected by a user for testing a particular connector assembly based on whether the arm engagement data matches the arms that engage the connector assembly.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: October 17, 1995
    Assignee: AT&T IPM Corp.
    Inventor: Madhu P. Asar
  • Patent number: 5457682
    Abstract: In order to extend the geographical coverage of a line unit utilized in a telecommunications system, a host line apparatus is utilized in place of a conventional line group apparatus in a line unit. The host unit communicates information directed to the line group apparatus which it replaces via a transmission media to a remote line group unit which is geographically separated from the line unit. The remote line group supports a plurality of individual subscriber lines and provides service to the subscribers without requiring many of the elements normally required in a normal common shelf utilized in a conventional line unit.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: October 10, 1995
    Assignee: AT&T IPM Corp.
    Inventors: Kenneth W. Haag, Shen-Chung Liu, Jim D. Peters
  • Patent number: 5450524
    Abstract: Apparatus and method for operating a speech password system. The system apparatus records and stores a plurality of alphanumeric models. A user password is enrolled by the apparatus recognizing spoken sounds and comparing spoken password enrollment sounds with each of the alphanumeric models. Each user password is stored in the system by recording a pair of clusters identifying five alphanumeric models closest to and farther from the user spoken password enrollment sounds of the password. The system identifies subsequent passwords by recognizing a spoken access password and comparing the sounds thereof with each of the cluster identified alphanumeric models and assigning scores representing the similarity of the password access sounds with the alphanumeric models recorded in the pair of clusters. The spoken password access sounds are identified as a previously enrolled password by summarizing the cluster assigned scores and comparing the summation thereof with a predetermined threshold.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: September 12, 1995
    Assignee: AT&T Corp.
    Inventor: Eugene L. Rissanen
  • Patent number: 5446880
    Abstract: A database interface and associated communication program are installed in each node in a communication network. The database interface provides a translation from the record format of the database and a standardized format for transmission to other nodes thus providing translation between the formats of the different databases formats as records are transmitted between the databases on different nodes. The communication program transmits records that have been translated to the standardized format to nodes which contain corresponding records maintaining current records at each node. A node having a corresponding node can assign an owner. Assigning an owner causes the record to be sent to the database that is associated with the new owner. The owner has the responsibility for acting on the record. The originator of the record is also identified.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: August 29, 1995
    Assignee: AT&T Corp.
    Inventors: Timothy E. Balgeman, Diane M. Clodi, Robert W. Haddleton, Jr., John R. North, Judith A. Selby
  • Patent number: 5442689
    Abstract: In a method implemented by a telecommunications switch, a call request is made for a called party having a predetermined directory number. A determination is made if preconnection services are to be provided for the called party, and if such services are to be provided, a service node to provide the services is identified. A further determination is made if the call request is from other than the selected service node. If the call request is not from the selected service node, the call request is routed to the service node for preconnection services. If a call request is from the selected service node, the call is routed to the called party. This permits a selected service node to originate a separate call to the called party so that services can be provided on behalf of the called party in response to a call request made by a calling party. This method allows preconnection services to be provided without the requirement of multiple directory numbers being assigned to the called party.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: August 15, 1995
    Assignee: AT&T Corp.
    Inventors: Anthony Buttitta, Eric A. Duesing, Wayne R. Kalbow, Mark O. Rosstedt, Liane T. Tsai
  • Patent number: 5436966
    Abstract: An automatic call distribution (ACD) interface unit (AIU) which receives event messages generated by different telecommunication switches and forwards corresponding event messages to management of information system (MIS) processors. The AIU insures the uniqueness of identification codes by substituting a modified identification code when event messages destined for a single MIS processor are generated by two or more telecommunication switches.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: July 25, 1995
    Assignee: AT&T Corp.
    Inventors: John C. Barrett, Eugene Gerber, Mary R. Otto, Wayne A. Senneke
  • Patent number: 5430827
    Abstract: Passwords are spoken by users and stored as speech models in a database. The database also contains a plurality of reference voice (RV) speech models based on speech inputs by various persons; each RV speech model includes characters, digits, or phrases comprising user assigned passwords. Preferably, a group of the RV speech models are selected based upon a predetermined level of difference between same and a speech model of the user's spoken password. In requesting access to the system, a user speaks the assigned password. The password entered by the user to obtain access is compared with user's own speech models and with the selected RV speech models to determine a measure of similarity. The validity of the password is determined based upon this measure of similarity.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: July 4, 1995
    Assignee: AT&T Corp.
    Inventor: Eugene L. Rissanen
  • Patent number: 5418947
    Abstract: A binary search tree is created having a plurality of linked tree nodes, each of which store a key generated using a predetermined hashing function for each record in a database based upon a predetermined set of fields of each record. Tree nodes consist of such keys and the address of the corresponding record. The keys are arranged on the tree relative to the numerical value of keys previously entered in the tree. To locate a particular record, the key is generated for the record and the tree is traversed to locate a tree node having an identical key value. The address stored with the matching node in the tree is utilized to access the record.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: May 23, 1995
    Assignee: AT&T Corp.
    Inventors: Gordon K. Hsu, Liheng M. Su, deceased
  • Patent number: 5396536
    Abstract: A multimode service system processes calls routed to it by a digital switch in a telecommunications system wherein choices are selectable by the user. Calls are processed by automatically determining the mode of communication utilized by the calling party and communicating with the calling party utilizing the calling party's communication mode to obtain information needed to route the call or implement user selectable features. A reply from the user provides information which determines feature selection or a call routing path. The multimode service system transmits a signal to the telecommunications system which defines the feature or path selection based on the reply from the user.
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: March 7, 1995
    Assignee: AT&T Corp.
    Inventor: Michael A. Yudkowsky
  • Patent number: 5390233
    Abstract: A wireless network controller supports telephone call between a wireless telephone and a wired telephone. First and second wired communication channels are connected to a telecommunication switch and the wired telephone, respectively. A third wired communication channel is coupled to a radio frequency base station that supports a plurality of concurrent wireless communication channels to wireless telephones. An interface circuit coupled to the first, second, and third channels switches the connection of the first channel associated with the telecommunication switch between the second and third channels, and hence between the wired and wireless telephones. Simultaneous connection to both the wireless and wired telephones is also supported. A conventional line terminating impedance is always presented to the switch regardless of whether one or both of the wireless and wired telephones are off-hook.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: February 14, 1995
    Assignee: AT&T Corp.
    Inventors: John P. Jensen, Michael R. Ross
  • Patent number: 5384823
    Abstract: The operating system control device in a telecommunications switch is capable of operating under the control of software instructions associated with a new switch feature for executing a series of actions used to integrate the new switch feature with the operating system. The operating system control device further provides the capability operating under the control of software instructions for testing the operability of the new switch feature. This minimizes the costs associated with the installation of new features and the amount of skilled craft personnel time required.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: January 24, 1995
    Assignee: AT&T Corp.
    Inventors: Edwin F. Brenski, Dhaval C. Patel, Richard M. Rovnyak, Sr.
  • Patent number: 5384822
    Abstract: A plurality of telephone devices responsive to computer commands are connected to a telecommunications switch. A computer controlled apparatus sends command messages to the telephone devices causing them to initiate conventional actions such as dialing. The apparatus receives reply messages from the telephone devices which represent the status of parameters such as ringing associated with the telephone device. Reply messages are identified relative to previously sent command messages. If the actual status of parameters represented by a reply message matches an anticipated status of the parameters corresponding to actions expected in response to a command message, a successful test of the switch functions associated with the command message results. An unmatched condition corresponds to a test failure requiring user analysis.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: January 24, 1995
    Assignee: AT&T Corp.
    Inventors: Ben G. Brown, John A. Krallmann, Christopher D. Liesen, Mark J. Purdome
  • Patent number: 5373553
    Abstract: A group of rules is stored in memory of a computer system wherein each rule defines an allowable combination of configurable parameters that are controllable by command message. Inputs are received from the user indicating the specific ones of the configurable parameters to be controlled. The selected parameters are compared to the rules to determine sets of configurable parameter communications which are allowed; a first list of such parameters is generated. One of the sets of parameters from the first list is entered on a second list. The first list is modified to exclude sets of configurable parameters which include a control parameter included in the set entered on the second list. This process is repeated until all selected parameters by the user are contained on the second list. The second list of parameters each have a corresponding command message and thus, a group of command messages are automatically generated to control the selected parameters.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: December 13, 1994
    Assignee: AT&T Corp.
    Inventors: Donald J. Mintz, Robert F. Schillo, V. Seshadri
  • Patent number: 5371742
    Abstract: A hierarchal organization of registers containing error indicators is utilized to determine which of a plurality of error recovery modules is to be executed. A redundancy mask and a priority mask stored in a data table associated with each register are sequentially applied to each register in order to eliminate redundant error indicators resulting from a common fault and to set the order of execution of error recovery modules. Thus, the redundancy and priorities associated with detected errors can be controlled substantially independent of the actual error recovery actions to be taken.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: December 6, 1994
    Assignee: AT&T Corp.
    Inventors: Arthur H. Brown, Ronnie E. Dean
  • Patent number: 5369696
    Abstract: This invention is generally directed to minimizing the disruption of subscriber selectable features during the transfer of subscriber lines from a first line unit equipment to a second line unit equipment associated with a telecommunications switch. A second data assignment table which is based on a first data assignment table is utilized in conjunction with a digital telecommunications switch to facilitate an improved service transition when subscriber lines are to be transferred from a first type of line unit equipment to a second type of line unit equipment. The data assignment tables contain for each telephone number an identification of a line unit address utilized to support that telephone number and corresponding parameters which identify which customer selectable features are active.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: November 29, 1994
    Assignee: AT&T Corp.
    Inventors: William J. Krauss, Thomas J. Pieper, Bernard G. Ruel, Gilbert M. Stewart, Kathleen C. Whildin
  • Patent number: 5353192
    Abstract: A plug-in circuit card assembly for mounting high power electrical and optical components. The apparatus comprises a printed wiring circuit mounting high power electrical and optical components and connectors with conducting paths interconnecting the components and ones of the components with the connectors. The assembly has a structure attached to the printed wiring circuit with a heat sink formed at one end and having a pair of plates extending outward therefrom. One plate mounts a plurality of high thermal conducting pedestals each engaging corresponding ones of the components. Vent tubes are positioned between the plates with each vent tube having one end engaging one of the pedestals and an opposite end engaging the heat sink and functions to conduct heat from the components to the heat sink for dissipation.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: October 4, 1994
    Assignee: AT&T Bell Laboratories
    Inventor: Ronald A. Nordin
  • Patent number: 5331632
    Abstract: A transmission scheme serially propagates time slot data to a plurality of TSI modules with time slot data contained in one TSI frame being serially transmitted from module to module in a daisy-chain technique. A dedicated outbound transmission bus transmits the frame of data from one module to a dedicated inbound transmission bus of another module. The outbound and inbound data buses are connected by separate buses on a backplane which is coupled to each of the TSI modules. Preferably, the TSI modules do not transmit selected ones of the stored data to end destinations until the last TSI module has received the frame of data so that all modules can begin the transmission in time synchronization. Maximum transfer data rates can be achieved since undesired transmission line characteristics or disruptions are minimized by the use of dedicated input and output transfer buses between the modules.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: July 19, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Calvin Aaron, Ronald J. Canniff
  • Patent number: 5329608
    Abstract: Apparatus and method for recording data in a speech recognition system and recognizing spoken data corresponding to the recorded data. The apparatus and method responds to entered data by generating a string of phonetic transcriptions from the entered data. The data and generated phonetic transcription string associated therewith is recorded in a vocabulary lexicon of the speech recognition system. The apparatus and method responds to receipt of spoken data by constructing a model of subwords characteristic of the spoken data and compares the constructed subword model with ones of the recorded lexicon vocabulary recorded phonetic transcription strings to recognize the spoken data as the data identified by and associated with a phonetic transcription string matching the constructed subword string.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: July 12, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Enrico L. Bocchieri, Sedat I. Gokcen, Rajendra P. Mikkilineni, David B. Roe, Jay G. Wilpon