Matches 1 - 50 out of 356 1 2 3 4 5 6 7 8 >

CobaltIP-faceted-search-demo
Match Document Document Title
8150028 Circuit device with serial bus isolation  
In a particular embodiment, a circuit device includes a first circuit having a first plurality of serial terminals including a first data receive terminal and a first data transmit terminal. The...
8129974 Systems and methods for self-recycling power  
A power system includes a switch, a capacitor and a comparator circuit. The power system receives a signal to turn off power supplied to the power system, turns off the switch that is used to...
8131285 Transmission/reception channel matching apparatus for mobile communication terminal and mobile phone test equipment  
Disclosed herein is a transmission/reception channel matching apparatus for a mobile communication terminal and a mobile phone test equipment. The transmission/reception channel matching apparatus...
8049484 Controlling inline power at a powered device  
A powered device includes a first switch, a second switch, and a controller. The first switch is disposed between a center tap of the first transformer and a center tap of the third transformer....
8023642 Method for extending ethernet over twisted pair conductors and to the telephone network and plug-in apparatus for same employing standard mechanics  
An Ethernet extension device is provided for metro or last mile Ethernet service via twisted pairs as opposed to fiber optics. The Ethernet extension device is implemented as a plug-in extension...
8005205 Protective plug for distribution frame devices in telecommunications and data technology  
The invention relates to a protected plug socket (20) for distribution devices in telecommunications and data technology, comprising at least one housing (21) and at least one protective element...
RE42590 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...
7964993 Network devices with solid state transformer and class AB output stage for active EMI suppression and termination of open-drain transmit drivers of a physical device  
Embodiments disclosed herein describe a network device including a class AB common mode suppression (CMS) circuit coupled in parallel between a line voltage source and a physical layer (PHY) device...
7940922 Telephone interface circuit  
A telephone interface circuit comprising a speech circuit, a control circuit turning on upon receiving a supply of a forward direction trigger current so as to connect first and second telephone...
7912210 Inductive coupling for communications equipment interface circuitry  
A system for improving the attenuation of an undesired signal found in a differential signal path through the use of inductive coupling. The system includes a primary inductor, a secondary...
RE42093 Active audio compressing in telecommunication  
An output reducing system for a telephone system, e.g., implemented in a headset, includes an input line and an output line, wherein the input line transmits an incoming signal to an output...
7881461 Method and apparatus for conveying bidirectional data, power and timing signals using a single transformer  
Transformer driven by data modulated signal provides isolated power. Outbound data is extracted from the data modulated signal received from the transformer. Inbound data received in isolated...
7822195 Telephone interface circuit  
A telephone interface circuit comprises a first transistor for controlling opening and closing between a speech circuit and subscriber lines, a second transistor for controlling the first...
7787614 Sealing current terminator for inhibiting oxidation and methods therefor  
Methodologies and structure are provided for use in a communications line that transmit data without plain old telephone service (POTS), or splits the POTS service from the data service, to inhibit...
7773744 System and method for terminating sealing current  
A sealing current system for a subscriber line that comprises a power source coupled to a first end of the subscriber line configured to apply a voltage to the subscriber line. The sealing current...
RE41164 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...
7599484 Element management system for managing line-powered network elements  
A method of managing power at an element management system for a power sourcing network element and a power sinking network element of an access network is provided. The method includes identifying...
7583798 Apparatus for protecting multi-function products from surge voltage  
Provided is an apparatus for protecting a multi-function product from surge voltage, the multi-function product including a public telephone network connection unit which receives one of a ring...
7580160 Modem and facsimile apparatus capable of monitoring G3 communications via ISDN  
A facsimile use modem apparatus includes an analog interface formed from a silicon data access arrangement interfacing with an analog telephone line. A digital interface is provided to interface...
7573839 Line driver for an adaptive hybrid circuit  
A second output transmission signal (“TX2”) added to a line driver is a scaled version of the main output transmission signal (“TX1”). TX2 is scaled from TX1 by a variable scale factor K. An adap...
7561683 Method for measuring resistance for a subscriber line interface circuit using a protective circuit  
The invention relates to a method for ascertaining a resistance value (Z) between a first contact (2) and a second contact (3) in a subscriber line interface circuit (4), where a protective circuit...
7557676 Signal transmission circuit, electronic device, cable, and connector  
A signal transmission circuit has first to fourth inductors, and first and second varistors. The first and second inductors are magnetically coupled to each other. The first varistor is connected...
7515391 Linear low capacitance overvoltage protection circuit  
A bipolar semiconductor overvoltage protection circuit presents less capacitance to a communication line. The overvoltage protection circuit includes an overvoltage protection device that is biased...
7508930 Technique for independent ground fault detection of multiple twisted pair telephone lines connected to a common electrical power source  
A method and apparatus detects a ground fault on a span-powered telecommunication wireline within a plurality of span-powered wireline segments, to respective ones of which DSL-Cs are coupled, so...
7463675 Direct digital access arrangement circuitry and method for connecting to phone lines  
An isolation system is provided that is suitable for use in telephony, medical instrumentation, industrial process control and other applications. Preferred embodiments of the invention comprise a...
7433165 Auto-resetting span-power protection  
Systems and methods for auto-resetting span power protection are provided. In one embodiment, a method for deactivating a protective device is provided. The method comprises determining when an...
7412610 System and method for power delivery to computing terminals  
Described is a method wherein a computer terminal is coupled to a power supply through a docking arrangement. The docking arrangement includes a protection circuit. A current supplied to the...
7388962 Directional hearing enhancement systems  
A hearing enhancement system that enhances a user's hearing based on a directional speaker is disclosed. In one embodiment, the system can include an interface unit that has a directional speaker...
7340051 Power ramp-up in a line-powered network element system  
A method of ramping up a power supply that supplies power on a communication medium. The method includes supplying power on the communication medium with the power supply operating at a first set...
7280655 DSL protector having a detachable wire interface  
An embodiment of the invention is a digital subscriber line (DSL) protection device. The DSL protection device includes a housing and protection components with the housing providing at least one...
7266195 Surge clamp protection circuit  
A surge clamp circuit that may be implemented with DAA circuitry to limit the total voltage developed across one or more line side capacitors due to charge pumping phenomenon during a...
7231037 Active audio compressing in telecommunication  
An output reducing system for a telephone system, e.g., implemented in a headset, includes an input line and an output line, wherein the input line transmits an incoming signal to an output...
7224492 Facsimile apparatus capable of detecting a line connection  
A facsimile apparatus can properly detect whether or not the facsimile apparatus is connected to a line. The facsimile apparatus comprises a network control device formed of a semiconductor DAA...
7203224 Isolation system with digital communication across a capacitive barrier  
An isolation system is provided that is suitable for use in telephony, medical instrumentation, industrial process control and other applications. Preferred embodiments of the invention comprise a...
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...
7149286 Electrical system like a system for testing the channels of a communication system  
An electrical system is described comprising none or one or two function boards and at least one voltage converter. The function board/s and the voltage converter are connected such that a voltage...
7139528 RF coupled data access arrangement circuit for telephony customer premise equipment  
A data access arrangement (DAA) circuit for an item of customer premise equipment (CPE, i.e., telephone terminal equipment) utilizes RF coupling across an isolation barrier between two sides of the...
7139391 DAA hook switch  
A hook switch circuit is shown wherein two high-voltage bipolar transistors, a PNP transistor Q1 and a NPN transistor Q2. that are connected in a regenerative feedback manner to form a bi-stable...
7139104 Downsized facsimile machine using semiconductor DAA  
A facsimile machine having a semiconductor DAA provided in a line I/F part performing facsimile data communication with a network includes a tone signal reception part in the form of a...
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...
7116779 Network interface device for high speed data lines  
A network interface device for Ethernet networks using unshielded twisted pair cables comprising an overvoltage protection module and an interconnection module connected to the overvoltage...
7099461 System and method for the powering and fault protection of remote telecommunications equipment  
A protection circuit for telecommunications equipment powered remotely through a twisted pair subscriber loop, comprising: a charge storage circuit, coupled to the subscriber loop through an arm...
7095847 DC/DC converter and subscriber line interface circuit  
A DC/DC converter capable of preventing abnormal temperature increase in a power transistor. The DC/DC converter comprises a loop circuit, a power transistor, an abnormal high temperature detection...
7095848 Power up reset circuit for line powered circuit  
A system for powering up an electronic circuit with telephone line power such that the electronic circuit does not enter a lockup state. The system includes a voltage detector that measures the...
7065056 Transceiver circuit including an echo canceller  
A circuit for transmitting and receiving communications. The circuit includes a transmit block, a receive block, and an echo canceller, coupled to the transmit block and to the receive block, for...
7058173 Multi-stage isolation barrier circuitry and method for connection of a telephony device to a telephone line  
A multi-stage surge protector/isolation barrier is provided for connection between a telephony device and a telephone network. The multi-stage surge protector/isolation barrier includes a first...
7031462 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...
7016490 Circuit board capacitor structure for forming a high voltage isolation barrier  
A circuit board capacitor structure operable as a high voltage isolation barrier in communication circuitry. Capacitor electrodes form a capacitive structure directly on a printed circuit board's...
6980647 Primary telephone line protector with failsafe  
Disclosed is a module (10) having pins (16-24) connected to respective conductor tower strips (46, 48, 50, 52). Pairs (46, 50 and 48, 52) of the conductor tower strips are spring biased toward each...
6978013 Device for establishing a galvanically separate connection between a telephone line and a signal processing unit at the subscriber end of the telephone line  
A device for the DC-decoupled connection of a telephone line to a signal processing device at the subscriber end of the telephone line is disclosed. The device exhibits a first circuit which is...
Matches 1 - 50 out of 356 1 2 3 4 5 6 7 8 >