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| Number | Title | Issue Date |
| 7933402 | Integrated adapter and fax device using the same An integrated adapter and fax device using the integrated adapter are provided. The power supply converting unit and line interface unit, each of which has a first section and a second section that are isolated from each other, are configured separately in the integ... | 04/26/2011 |
| 7426279 | Electromagnetic audio and data signaling transducers and systems An electromagnetic field signal communications system (100) is based on a specially configured sending transducer (30), having electrical conductors (32) wound onto a generally circular core (33) including an air gap (34) from whic... | 09/16/2008 |
| 7328236 | Method and system for accessing information and/or data available on a wide area computer network There is disclosed a method and a system for accessing information and/or data available on a wide area computer network (100), such as the Internet. A first modulated acoustic signal (A) is transmitted to a group of potential users each provided with a porta... | 02/05/2008 |
| 7317807 | Apparatus for communication coupling with a hearing aid An improved communication coupling device having a coupler coil with about 125 turns of wire about a core having a hole for use with a hearing aid having a hearing aid coil to accommodate individuals with various degrees of hearing loss to use a sound generation dev... | 01/08/2008 |
| 7215752 | Intelligent switching system for voice and data A teleconferencing system for voice and data provides interconnections among user sites via a central station. User stations at user sites each alternate operation between a data mode connecting a user computer and modem to a user telephone communication path and a ... | 05/08/2007 |
| RE39406 | Telephone line coupler The telephone line coupler circuit has a single transmit opto-coupler whose output includes a DC bias component connected to a gate of a line seize switch for connecting a DC line seize load across the ring and tip contacts of the telephone line. The line seize swit... | 11/21/2006 |
| 7106874 | Method and system for selective coupling of a communication unit to a hearing enhancement device The invention concerns a method (200) and system (100) for selectively coupling a communication unit (110) to a hearing enhancement device (112). The method includes the steps of—in the communication unit—selecting (212) betwee... | 09/12/2006 |
| 7099468 | Telephone handset restraining mechanism A telephone handset restraining and release mechanism comprises a cup-shaped enclosure for receiving and restraining the transmitter end of a telephone handset. This cup-shaped enclosure is mounted to the top surface of a housing that also supports a receiver end re... | 08/29/2006 |
| 7003317 | Motorcycle helmet communication cable Motorcycle helmet communications cables connecting substantially all models of cellular telephones to a “CHATTERBOX” HJC-GMRS X1 rider-to-rider motorcycle helmet communication system. A length of audio cable is provided with a 3.5 mm stereo plug at one end desig... | 02/21/2006 |
| 6965672 | Electronic switching system An electronic switching system, comprising a common source of voltage to a plurality of user stations connected in parallel, an electronic means of connection to electrically connect a chosen user station to the common source of voltage, and a means of disconnection... | 11/15/2005 |
| 6925179 | Method and apparatus for a hearing aid coupling system An audio coupler device for communication with a T-coil in a hearing aid is described to fit inside the receiver section of a handset as defined. The coupler device is so mounted inside the receiver section as to provide strong inductive coupling with a T-coil insid... | 08/02/2005 |
| 6668042 | Telephone handset for mixed-mode voice-and-TDD communication A modular telephone handset (100) comprises an earpiece (102), a mouthpiece (104), and a handle (106) detachably attached at one end to the earpiece and at the other end to the mouthpiece. Attachment and detachment is effected by snap or twist joints (108... | 12/23/2003 |
| 6584182 | Method and apparatus for communicating data over a telephone line using an acoustic modem The present invention provides systems and methods for the communication of data over telephone lines. A handset orientation tolerant bi-directional acoustic modem according to the invention includes a first transducer operable as a receiving unit under a... | 06/24/2003 |
| 6584196 | Electronic inductor with transmit signal telephone line driver In an electronic inductor circuit, an operational amplifier drives the base of the electronic inductor transistor, and receives negative feedback from the emitter of the transistor. The transistor and operational amplifier combine to form a voltage-contro... | 06/24/2003 |
| 6539073 | Nuclear fuel bundle having spacers captured by a water rod Water rod segments are provided in a nuclear fuel bundle and releasably connected one to the other at joints within openings through the spacers. A lowermost water rod segment passes through a number of the spacers, with water rods segments above the lowe... | 03/25/2003 |
| 6233336 | Inductive coupling interface for electronic device An inductive coupling interface couples a first electronic device to an inductive coupling link of a second electronic device. The second device link is in a coupling zone adjacent the interface. A separation plane separates the coupling zone from the int... | 05/15/2001 |
| 6134321 | Modem loop current detect system to detect an off-hook condition in an extension telephone A telephone line monitoring circuit uses an optoisolator to convert the telephone line current to a voltage which is applied to the input of an AID converter. The A/D values are coarse values representing telephone line current. The A/D is sampled at a pr... | 10/17/2000 |
| 6104707 | Transformer coupler for communication over various lines An apparatus for electrical line communication includes a transmitter, a receiver, a modem, and a coupler at each of two or more locations along an electrical line. The couplers have capacitive circuits serially connected with an air-core transformer. The... | 08/15/2000 |
| 5999400 | Modular plug with electronic components A modular plug which has an insulative housing comprising a front wall, a rear wall, a top wall, a bottom wall and a pair of lateral walls which are perpendicularly interposed between the top two bottom walls. There are a plurality of front longitudinal t... | 12/07/1999 |
| 5937334 | Radio communications and telephone network interface system A phone patch 26 for interfacing between a radio 12 and a telephone network 32 includes means for electrically coupling audio signals between the radio 12 and the telephone network 32. A monitoring means is operationally coupled to the coupling means and ... | 08/10/1999 |
| 5802148 | System for generating aural announcements within a premises A system for generating aural announcements of incoming calls within a premises has a premises phone connected within a premises phone line that forms first and second communication channels. The first communication channel is adapted for connection and c... | 09/01/1998 |
| 5740257 | Active noise control earpiece being compatible with magnetic coupled hearing aids Active noise control for use by individuals using magnetically coupled hearing aids is realized by generating a true representation of the handset input signal, which is employed to drive a separate external field coil. The external field coil is position... | 04/14/1998 |
| 5561710 | Interactive voice communication terminal with alpha and numeric keypad An interactive voice communication terminal (10) provides alpha and numeric characters transmitted from a DTMF generator (36) to access a database by interfacing with the mouthpiece (24) of a telephone handset (26) via a transducer (22). A keypad (14) is ... | 10/01/1996 |
| 5557673 | Auditory assistance apparatus and method An auditory assistance apparatus and method for use with a sound signal source which also produces a magnetic field propagated along a magnetic field axis to increase the signal-to-noise ratio with respect to ambient noise. A pair of magnetic pickup coils... | 09/17/1996 |
| 5555300 | Telephone handset microphone level adjustment A system for automatically adjusting the level of a telephone instrument microphone input signal in response to the level of the telephone instrument sidetone signal. The system may provide a test signal to the handset microphone input and receive the sid... | 09/10/1996 |
| 5291541 | Coupling apparatus for telephone handsets Coupling apparatus for a telephone handset comprises a handset-coupling cradle having a dome at one end thereof for locating the earpiece (receiver) of the handset, and sound ports at the other end of the cradle in the region where the mouthpiece (microph... | 03/01/1994 |
| 5265145 | Alphanumeric caller identification telephone An alphanumeric caller identification telephone is disclosed which has several advantages and novelties. Among them are that when certain predetermined incoming calls including a number or name are received, this apparatus can display not only the receive... | 11/23/1993 |
| 5239580 | Modem-telephone coupler Coupling device for the connection of a Data Circuit Terminating Equipment DCE to a given Public Switched Telephone Network PSTN and to a local telephone set. The coupler includes means for providing said local telephone set with DC current whereby the mi... | 08/24/1993 |
| 5134649 | Acoustic coupler for high-speed modem A data coupler is disclosed for use in connecting a high speed data modem to a typical telephone handset in a high ambient acoustic noise field. The data coupler features a method for conserving, through a magnetic detection process, the high signal to no... | 07/28/1992 |
| 5010575 | Audio current pick-up device An audio current pick-up device for use with an electric wire 6 carrying an electric current containing audio information comprises a pair of substantially identical magnetic induction coil assemblies 26, 27 disposed in parallel to each other with an axia... | 04/23/1991 |
| 5001746 | Transmission control unit A transmission control unit disclosed is used when an electronic device which is usually directly connected to a telephone line is used via a public telephone or the like. In this case, the transmission control unit is connected to a MODEM included in the... | 03/19/1991 |
| 4998079 | Bi-directional signal coupler for a balanced data transmission line A coupler for a balanced two wire data transmission line includes input and output ports as well as a forward coupled port and a reflected coupled port. The coupler is constructed of passive components including transformers and resistors to provide at th... | 03/05/1991 |
| 4993060 | Portable device for use by a news reporter A portable device to be carried by a reporter and coupled to a telephone line to a location from which the reporter wishes to transmit a report to a broadcast station to be broadcast live has a casing with a microphone (1) for voice input, a tape input (2... | 02/12/1991 |
| 4944017 | Electroacoustic insert with added coil The present invention provides an insert (1) forming an independent assembly of a coil body (15). The electroacoustic transducer comprises an insert (1) formed of a case with a vibrating membrane (2) and its electric connectors (4, 5) and a coil body (15)... | 07/24/1990 |
| 4847900 | Infrared hookswitch for a telephone An optical hookswitch assembly useable on a telephone set as an optical communications port is disclosed. The hookswitch assembly is comprised of light emitting and detecting diodes so disposed in the telephone so as to detect the presence of a handset. A... | 07/11/1989 |
| 4845738 | Hands-free type automobile telephone and general-purpose telephone The automobile telephone is used in a hands-free condition by coupling its handset with a cradle-shaped coupler which is provided with a pair of swingable support plates for receiving a transmitter portion and a receiver portion of the handset in use to m... | 07/04/1989 |
| 4764922 | Data terminal interface circuit to a telephone transmission line At a transmission line (La', Lb') connected with telephone station equipment (Tel) via a lowpass filter (TP), via which telephone station signals are transmitted in a first frequency range, there is connected via a line transformer (U3) a data terminal (D... | 08/16/1988 |
| 4723267 | Telephone line interface and dialer circuitry for telecommunications equipment Apparatus (10) for providing isolation and interconnection between the tip (1) and ring (2) conductors of a telephone line and data communications equipment to be connected thereto, such as a modem or other device (12). The apparatus serves also as a circ... | 02/02/1988 |
| 4697283 | Telephone handset with integrated flux coil A telephone handset having a receiver housing at one end has a flux coil positioned at the front corner at the junction between the peripheral wall and the front wall of the housing. The flux coil is connected in series or in parallel with the receiver. T... | 09/29/1987 |
| 4592069 | Line powered modem A modem or other data handling apparatus for connection to a transmission line includes an inductance simulation circuit for providing a low d.c. resistance to allow circulation of a line holding current, whilst presenting a high a.c. shunt impedance to t... | 05/27/1986 |
