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| Number | Title | Issue Date |
| 7995743 | Method and apparatus for non-disruptive telecommunication loop condition determination The invention provides a low cost, simple, circuit for detecting the condition of a telephone line. ... | 08/09/2011 |
| 7920695 | Telephony distribution system A telephony distribution system includes a plurality of terminals with two connection points (16A), each for one pair of conductors (17A) forming part of a telephony distribution installation, and, for each of those terminals (16A), a short-circ... | 04/05/2011 |
| 7567664 | Method and apparatus for providing accessibility features for a telephone Method and apparatus for providing accessibility features for a telephone is described. In one example, a telephone system includes a memory, a counter, and a microcontroller. The memory is configured to store user preference data, including duration of a timeout pe... | 07/28/2009 |
| 7372371 | Notification lights, locations and rules for a computer system Notifications to computer users are provided via indicators such as lights. The indicators are controlled according to rules, to convey computer-related state information to users in a consistent manner. Locations of visible indicators are chosen to facilitate easy ... | 05/13/2008 |
| 7340284 | Device for connecting ear-microphone to mobile phone through interface connector thereof Disclosed is a device for connecting an ear-microphone to a mobile phone through an interface connector of the mobile phone. The phone includes a codec which has hands-free-kit audio transmission and reception terminals connected to the interface connector. A contro... | 03/04/2008 |
| 7330502 | Input/output circuit and semiconductor integrated circuit An input/output circuit includes a reference clock generator configured to generate a reference clock. A signal transmitter is configured to transmit serial data in synchronization with one of the reference clock and a test clock. A signal-receiving circuit is confi... | 02/12/2008 |
| RE40020 | Impedance blocking filter circuit An impedance blocking filter circuit is provided for use in telecommunication systems for interconnecting between incoming telephone lines and customer's terminal equipment so as to unconditionally block impedances above 20 KHz due to the customer's terminal equipme... | 01/22/2008 |
| 7315592 | Common mode noise cancellation A noise cancellation system configured to isolate and process a common mode noise signal to generate a cancellation signal. The cancellation signal is combined with a differential signal to cancel unwanted differential mode noise that coupled onto the differential s... | 01/01/2008 |
| 7310308 | Systems and methods for multiple mode voice and data communications using intelligently bridged TDM and packet buses Systems and methods by which voice/data communications may occur in multiple modes/protocols are disclosed. In particular, systems and methods are provided for multiple native mode/protocol voice and data transmissions and receptions with a computing system having a... | 12/18/2007 |
| 7302247 | Spread spectrum isolator A circuit package includes first and second units containing functional circuitry. At least one RF isolation link interconnects the first and second units and provides voltage isolation between the first and second units. The RF isolation link provides data between ... | 11/27/2007 |
| 7289610 | Digital subscriber line service over loaded loops The preferred embodiments of the present invention generally provide improved communications over a subscriber loop that is loaded with at least one and potentially a plurality of load coils. The preferred embodiments of the present invention will work over loaded s... | 10/30/2007 |
| 7272215 | Automatic rapid switching between DSL service and POTS over loaded loops The preferred embodiments of the present invention generally provide improved communications over a subscriber loop that is loaded with at least one and potentially a plurality of load coils. The preferred embodiments of the present invention will support digital su... | 09/18/2007 |
| 7260152 | Method and device for injecting a noise signal into a paired wire communication link The present invention relates to a device and method for injecting a noise signal into a wire pair of a communication link. In operation a differential mode noise signal is received at a first and a second input port, which are connected via a first and a second res... | 08/21/2007 |
| 7260214 | Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections A subscriber line interface circuit has a battery-powered, high voltage analog section, that drives tip and ring lines of a subscriber loop, and a mixed signal (low voltage and digital signal processing) section, that monitors and controls the high voltage analog se... | 08/21/2007 |
| 7257211 | Method and apparatus for controlling and/or monitoring a MULAP line At least one MULAP line in a communication installation is controlled and/or monitored using an application. To simplify the combination of MULAP lines and CTI applications, or to allow it at all, each MULAP line has an associated MULAP call number, and a plurality ... | 08/14/2007 |
| 7254230 | Subscriber line interface circuitry A subscriber line interface circuit apparatus includes a signal processor having sense inputs for sensed tip and ring signals of a subscriber loop. The signal processor generates linefeed driver control signals in response to the sensed signals. A linefeed driver pr... | 08/07/2007 |
| 7230927 | Non-blocking expandable call center architecture An improved call center architecture includes a switch which communicates with agents either over a broadband network or through a conventional legacy PBX. The hybrid configuration also includes N+1 fault tolerance and the ability to linearly expand the capacity of ... | 06/12/2007 |
| 7227943 | Tone detector The present invention provides a tone detector that is capable of performing accurate tone signal detection in a short period of time. Specifically, the tone detector according to the present invention includes: a control unit that measures the tone signals using a ... | 06/05/2007 |
| 7224793 | Communication set with detection of set function and line condition A description is given of a communication set for connection to a communication line such as a telephone line, which communication set includes means for detecting set functions such as ringing signal detection, and a rectifier circuit which is connected to a common... | 05/29/2007 |
| 7221950 | Auto sensing home base station for mobile telephone with remote answering capabilities The present invention discloses in one embodiment a mobile telephone capable of communicating with a home base station through radio signals. The mobile telephone registers with a home base station before beginning to communicate with the home base station. The home... | 05/22/2007 |
| 7218713 | Telephone line interface for DAA circuitry A telephone line interface and associated circuitry that may be implemented to simultaneously couple DC loop voltage, ring bursts, and caller-ID data to the phone line side of a DAA circuit through a single two wire resistively coupled interface. The interface and c... | 05/15/2007 |
| 7218614 | Calling party control for an integrated service hub A method and apparatus for notifying a user device coupled to an integrated services hub (ISH) that a remote device has terminated communication with the user device. A network interface within the ISH receives a disconnect message from the remote device and routes ... | 05/15/2007 |
| 7194083 | System and method for interfacing plain old telephone system (POTS) devices with cellular networks A system and method for interfacing plain old telephone system (PATS) devices with a cellular network is presented. In a broad sense, the system includes an interface that bridges the POTS devices with the cellular network. The interface is configured to convert POT... | 03/20/2007 |
| 7190785 | Subscriber line interface circuitry Subscriber line interface circuitry includes an integrated circuit having sense inputs for a sensed tip signal and a sensed ring signal of a subscriber loop. The integrated circuit generates a subscriber loop linefeed driver control signal in response to the sensed ... | 03/13/2007 |
| 7190769 | Apparatus for controlling operation of a recording device with a telephone instrument An apparatus for controlling operation of a recording device with a telephone configured for orientation in a first state and a second state includes: (a) an information conveying section for conveying information from the telephone to a recording locus in the recor... | 03/13/2007 |
| 7180999 | Subscriber line interface circuitry Subscriber line interface circuitry includes an integrated circuit having sense inputs for a sensed tip signal and a sensed ring signal of a subscriber loop. The integrated circuit generates a subscriber loop linefeed driver control signal in response to the sensed ... | 02/20/2007 |
| 7177410 | Local control of call features in a telephone system A residential phone system allows for local control of call features from any phone extension. The phone system may include a microcontroller that communicates along the phone lines at a non-utilized frequency to several extension phones in a residence. The microcon... | 02/13/2007 |
| 7171167 | Mobile phone companion apparatus to provide voice link with land-line house telephone An apparatus that allows land-line house telephone users to receive mobile telephone incoming call through connection port, e.g., headphone outlet, commonly equipped on mobile telephone or like device. With the aid of this apparatus or called Personal Mobile Compani... | 01/30/2007 |
| 7170955 | Method and apparatus for accurately detecting presence of a valid signal A method and apparatus for accurately detecting the presence of a valid signal includes processing that begins by determining the energy level of an input signal in real time to produce a real time energy level. The processing then continues by delaying the input by... | 01/30/2007 |
| 7162028 | Universal telephony interface polarity detector A method and apparatus for measuring signals conveyed by a varying the voltage polarity across the tip and ring terminals in a telephone system is disclosed. The invention provides a composite circuit including a first stage in the form of a differential amplifier, ... | 01/09/2007 |
| 7158633 | Method and apparatus for monitoring subscriber loop interface circuitry power dissipation Subscriber line interface circuitry includes an integrated circuit having sense inputs for a sensed tip signal and a sensed ring signal of a subscriber loop. The integrated circuit generates a subscriber loop linefeed driver control signal in response to the sensed ... | 01/02/2007 |
| 7155000 | Process, arrangement, devices for seizure of a shared telephone line The invention relates to the control of access of various appliances of an installation which are connected to a telephone line. The appliances have a priority level. There is provision for the dispatching, on the request of an appliance performing a line seizure op... | 12/26/2006 |
| RE39432 | Impedance blocking filter circuit An impedance blocking filter circuit is provided for use in telecommunication systems for interconnecting between incoming telephone lines and customer's terminal equipment so as to unconditionally block impedances above 20 KHz due to the customer's terminal equipme... | 12/19/2006 |
| 7149514 | Cellular docking station A system for communicating with the user of a cellular telephone via the cellular mobile radio (CMR) system and the public switched telephone network (PSTN). A communications interface appends the telephone exchange number of an outgoing communication to include an ... | 12/12/2006 |
| 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 |
| 7130416 | Subscriber line interface circuit A subscriber line interface circuit (1′) for supplying line current (IL′) to a two-wire transmission line connected to a load (RL′), comprises a single current amplifier (3′). That single current amplifier (3′) is to be connected with ... | 10/31/2006 |
| 7130609 | Wireless backup telephone device and associated support system A wireless telephone backup device for landline telephone equipment that may be located on the customer side of the landline service connection, typically in a restricted access location, such as an attic, basement, or utility closet. An interconnection circuit in t... | 10/31/2006 |
| 7127060 | Subscriber circuit A subscriber circuit, provided with a feeding circuit for feeding the current of a call to a terminal through a subscriber line and a switching circuit group for connecting the feeding circuit to the subscriber line and releasing the feeding circuit from the subscri... | 10/24/2006 |
| 7113587 | Method and apparatus for non-disruptive telecommunication loop condition determination The invention provides a low cost, simple, circuit for detecting the condition of a telephone line. ... | 09/26/2006 |
| 7104686 | Radiographic apparatus A radiographic apparatus includes a detection section including photoelectric conversion elements that detect radiation that has been transmitted through a subject. The apparatus has a substantially rectangular detection surface; and a housing that contains the dete... | 09/12/2006 |
