Patents Examined by Stafford D. Schreyer
  • Patent number: 5233647
    Abstract: The systems consists of an intrinsic collaboration among a message concentrator unit, a center operating unit, several visual displays, printers, information storage devices including operating and management software, insuring that modular telephones and both validation and identification units and access units control together with regional billing centers and a validation and billing center, as well as terminals of collecting entities by interchanging diverse specific operating messages within the public modular telephone management system-the whole context and operation arisen from their performance.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: August 3, 1993
    Assignee: Telefonica de Espana
    Inventors: Francisco Ibanez Palomeque, Jose Mir Cepria
  • Patent number: 5228072
    Abstract: A dual unit diagnostic system for testing the physical status of a multi-pair cable. Each unit comprises connectors which are connectable to the cable wire pairs, and switches that are connected to the connectors, and are also activatable to provide distinguishable conductive pathways between each wire pair. A signal transmission section is connected to the switches, and provides a signal to a selected wires. A signal reception section is also connected to the switches for receiving a signal from distinguishable wires. A microprocessor is connected to the transmission section and the detection section, and which controls the transmission and reception of signals. A display is connected to the microprocessor and switches, and provides information to distinguish various physical wire status conditions based on the reception of the signal at predetermined wires.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: July 13, 1993
    Assignee: Independent Technologies, Inc.
    Inventors: Daryl E. Ingalsbe, David L. Ingalsbe, David W. Callahan, Jeffrey W. Wilson
  • Patent number: 5228073
    Abstract: A call identification display system includes a reception unit; at least one remote user unit; and a communication link such as conventional interface electronics located in the reception unit and the remote units interconnected by cables or rf or laser transmitter and receiver systems; the reception unit has a data entry device such as a keyboard for entering a message including at least identifying indicia for an incoming caller and a display device; each remote user unit includes a display displaying the message from the reception unit identifying the incoming caller and an instruction selector for selecting one of a number of predetermined instructions for display in the display device in the reception unit for directly disposition of the incoming call.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: July 13, 1993
    Inventor: Frederick D. Smith
  • Patent number: 5218632
    Abstract: A telecommunications billing record software system which permits the telephone administration which is operating the exchange to interface with and define the criteria for constructing and/or modifying the decision tables used to decide whether or not to generate a billing record for each particular call. In addition, the administration can also define the criteria for specifying the billing record data to be included within the billing records which are generated and the location to which the record is output.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: June 8, 1993
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventor: Anna M. Cool
  • Patent number: 5216707
    Abstract: Increased power to operate a paystation coin relay is derived from the tip/ring pair by means of a power boost circuit, which is controllably coupled to the tip/ring pair when the coin relay is to be fired. To fire the coin relay, a line coupling relay circuit is energized, so as to apply the tip/ring line voltage to a D.C.-to-D.C. converter, the output of which is coupled to current storage (capacitor) circuit. The output of the current storage circuit is coupled to a first switch circuit and monitored by a comparator. The first switch circuit has an output coupled in circuit with the coin relay.
    Type: Grant
    Filed: August 6, 1991
    Date of Patent: June 1, 1993
    Assignee: International Teleservice Corp.
    Inventors: Marcus K. Davenport, Richard K. Shipman, Thomas D. Young, Stephen H. Strode
  • Patent number: 5210788
    Abstract: In a combined telephone and electric power distribution system, both telephone signals and electric power are distributed by way of a common distribution system wherein signal conducting means (such as optical fibers) and electric power conducting means are routed alongside each other to/from various utilization points, such as to/from a computer, a special lighting fixture, a power receptacle and/or a special telephone instrument; which special telephone instrument has feature whereby the mere lifting of the receiver causes either a pre-programmed prefix or a pre-programmed telephone number to be dialed automatically. At some of these utilization points, telephone signal receptacles are provided alongside electric power receptacles. At other points, the signal conducting means is terminated in a radio transceiver and wireless signal radiation/receiving means.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: May 11, 1993
    Inventor: Ole K. Nilssen
  • Patent number: 5208851
    Abstract: A plurality of consoles (111-113) share use of a single landline (101) with minimal requirements for internal maintenance data signalling. As two or more consoles both share use of the link, a telephone interface (103) assigns one of the consoles to be responsible for maintenance signalling. If and when the assigned console concludes its communication needs or otherwise becomes unable to continue the maintenance signalling, the telephone interface will assign a new interested console to provide the maintenance signalling. This continues until no consoles remain having an interest in maintaining the communication link. In one embodiment, when the link is used by only a single console, a hold function can be accommodated. When two or more consoles are serviced, however, the hold function is not applied. Also, when the link has been placed on hold, any console can remove the hold condition.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: May 4, 1993
    Assignee: Motorola, Inc.
    Inventors: Jeffrey J. Blanchette, James C. Tykal, David A. Sticha
  • Patent number: 5206900
    Abstract: A device and method for interfacing a telephone to the telephone network is disclosed for receiving the ICLID of incoming telephone calls and responding in a predetermined manner. An ICLID receiver detects the presence or absence of the ICLID of an incoming telephone call, and receives the ICLID if present. In accordance with predetermined instructions and with the absence of an ICLID or the presence and identity of the ICLID, the device may acknowledge receipt of the ICLID to the incoming caller by generating a brief confirmation tone at minimum charge to the calling party, cause the incoming call to be answered or not answered, and may forward the incoming ICLID information to a predetermined location over the telephone network or by other means.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: April 27, 1993
    Inventor: David Callele
  • Patent number: 5206899
    Abstract: A subscriber can dynamically provision, i.e., assign desired characteristics to any "target station", which is an active phone accessible to a telecommunications network. A call thereafter originated from the target station (including a pay phone or a mobile phone) then can use customized features (for example, speed calling, conferencing, account code dialing) and take advantage of special corporate billing arrangements (for example, SDN, WATS and MEGACOM). The identity of the target station with respect to the communications network (e.g., the Automatic Number Identification (ANI) of the station) is not changed. Initially, a service profile is created and stored for each subscriber, containing information describing desired features and billing options.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: April 27, 1993
    Assignee: AT&T Bell Laboratories
    Inventors: Alok K. Gupta, Patricia D. Saleh, Barry S. Seip
  • Patent number: 5200990
    Abstract: A method of recovering a speech path of a pre-engaged call upon restarting a keyphone exchange system due to the occurrence of a system failure.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: April 6, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Seung-Hwan Cho
  • Patent number: 5198623
    Abstract: A digitizer includes a tablet having an array of conductors, and a pen-shaped, coil-containing stylus. The digitizer applies an energizing signal to either the conductors or the stylus, which signal induces voltages in the other. Then, the digitizer detects the induced voltages corresponding to the conductors, which define a voltage waveform having a positive peak, a negative peak, and a zero-crossing therebetween. The digitizer corrects for pen tilt in determining stylus position on the tablet by determining a position value for the zero-crossing using voltages in a region between the positive and negative peaks of the waveform and generating a pen tilt correction value using the position value and voltages in a region outside the positive and negative peaks. Then, the pen-tilt correction value and a preferably cyclic-error-corrected value for the position of the zero-crossing are combined to yield a relatively accurate pen-tilt-compensated determination of stylus position.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: March 30, 1993
    Assignee: CalComp, Inc.
    Inventor: Waldo L. Landmeier
  • Patent number: 5195124
    Abstract: A test system for local subscriber lines, which is used with a telephone communication system having a central office exchange, local subscribers accommodated by the central office exchange, and intervening units, i.e., a central office terminal, a subscriber side remote terminal, and a transmission line connected therebetween. This test system carries out a remote test and a local test independently by using a test line connected between remote test equipment and the remote terminal in which an artificial off-hook creation unit is introduced. This unit is made active when a local test is carried out for each subscriber line, to thereby avoid an occurrence of errors in the remote test.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: March 16, 1993
    Assignee: Fujitsu Limited
    Inventor: Yuzuru Ishioka
  • Patent number: 5194699
    Abstract: An electromagnetic digitizer tablet comprising an array of conductors having plural, spaced, similar active portions regularly and uniformly distributed throughout the active tablet region, together with additional structure to distinguish pointing device positions over the similar active portions. This arrangement reduces the number of individual conductors required. In a preferred arrangement, the active portions have a block S shape. As a further feature, novel algorithms are used to calculate the fine location of the pointing device.
    Type: Grant
    Filed: February 1, 1991
    Date of Patent: March 16, 1993
    Assignee: Summagraphics Corporation
    Inventor: Thomas C. Zalenski
  • Patent number: 5195125
    Abstract: A test system directed to apparatus for transmitting and receiving multiple telephone transmission signals over a single twisted pair. The system converts an analog signal from a local switching station to an 80 ksymbols/sec signal for transmission over a twisted pair by a line card. A remote terminal converts the 80 ksymbols/sec signal back into a conventional analog signal for use in conventional telephone, facsimile or other related equipment. The test equipment separately tests the entire system, the line card portion of the system, the remote terminal portion of the system, and the twisted pair.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: March 16, 1993
    Assignee: Raychem Corporation
    Inventors: David C. Bliven, Anthony Vranicar, Philip B. Vail, Gerald L. Shimirak, Julian S. Mullaney
  • Patent number: 5193108
    Abstract: A handheld, battery-powered telecommunications test set which combines the function of tone generator and inductive input probe along with functions such as resistance measurement and continuity/discontinuity. The inductive input is coupled to one input of a differential amplifier, which is susceptible to oscillations caused by leakage currents in the circuits performing other functions. During operation of the inductive input monitor probe, some of these circuits are inactivated, but may still have some leakage current that could flow through them, causing oscillation. Additional circuit elements are added to provide a low resistance pathway to a second input of the differential amplifier to shunt leakage currents from the inactive circuit to the differential amplifier such that the leakage current are converted from a differential signal to a common mode signal and are not amplified.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: March 9, 1993
    Assignee: Leviton Manufacturing Co., Inc.
    Inventor: Clay A. Stocklin
  • Patent number: 5193107
    Abstract: A telephone test set that performs dry loop testing of telephone lines has a passive speech network, a speakerphone circuit, and an amplifier and a speaker coupled to the speakerphone circuit. The passive speech network and the speakerphone circuit area isolated by the use of latching relays which are switched by a relay driver circuit that provides a short current burst. Line power can be used to power the speakerphone, so as to extend battery life of a battery which can augment the line power as needed.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: March 9, 1993
    Assignee: Harris Corporation
    Inventors: Geoffrey H. Parker, Andrew J. Hefley
  • Patent number: 5193113
    Abstract: A special cover for the anti-stuffing device door of a paystation telephone coin chute. The cover prevents insertion of large firecrackers or similar devices inside of the anti-stuffing device.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: March 9, 1993
    Assignee: Quadrum Telecommunications, Inc.
    Inventor: Gerald B. McGough
  • Patent number: 5191175
    Abstract: A self-tuning digitizer control circuit and method which employs a tunable excitation source instead of a tunable front end. In addition, the digitizer control circuit includes a stylus for sensing the excitation signal, and a circuit for processing the information signal from the stylus, including a narrow bandpass filter for passing the frequency of the excitation signal and minimizing the passage of extraneous noise. A controller determines the location of the stylus on the active surface of the digitizer and control operation of the circuit. The excitation source includes, in the preferred embodiment, a tunable divide-by-n circuit employing an 8-bit latch, an 8-bit counter, and a state machine. A nonvolatile memory stores the most recent value for the divisor value n. Provision is also made for a tuning method for the divide-by-n circuit.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: March 2, 1993
    Assignee: NCR Corporation
    Inventors: Robert L. Protheroe, Kazem Memarzadeh, John F. Crooks
  • Patent number: RE34187
    Abstract: Disclosed is a coordinates input system having a tablet constituting a coordinates input portion, a position designating device such as a stylus pen, and a position detection circuit adapted to drive said tablet and detect a position at which coordinates are input by said position designating device. The system comprises: an antenna coil disposed around a coordinates input range of said tablet; and a tuning circuit disposed in said position designating device and including a coil and a capacitor, wherein radio waves are generated by said antenna coil by application of an AC signal of a predetermined frequency thereto, and the status of said tuning circuit is discriminated by a signal of said antenna coil at the time when the transmission of said radio waves is suspended, thereby detecting the status of said position designating device.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: March 2, 1993
    Assignee: Wacom Co. Ltd.
    Inventors: Tsuguya Yamanami, Toshiaki Senda, Azuma Murakami
  • Patent number: RE34200
    Abstract: A pay telephone station having a lower housing coin chute (14) which is provided with a coin fraud prevention unit (10) in the form of a thin base (15) arranged in a slot (11) of a coin channel cover plate (12). The base (15) is provided with a pawl (23) having a tooth (24) with a chamfered face (25) which is biased into the path of a coin passing through a coin path (39) by a torsion spring (26). An anchor (59) for connecting a handset (56) to the upper housing coin dial unit (50) of the station includes a base with apertures (63, 64) and a V-shaped body (65) with a notch 66 defined between surfaces (69, 70). A long thumbscrew member (74) with a textured gripping surface connects the anchor (59) to a projector (51) integral with the upper housing (50). The handset cord assembly (A) is first passed through an aperture (54) in the projection (51) and then through the aperture (64) in the base (60).
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: March 23, 1993
    Assignee: International Teleservice, Inc.
    Inventors: Allen W. Vogl, Steven C. Poe, John H. MacNeill, Douglas J. Buron