Class 340/425.2 - Power control

Subclass of Class 340 - Communications: electrical
Definition: Subject matter comprising means for controlling power supplied
No. of patents: 22
Last issue date: 09/02/2008

Number	Title	Issue Date
7421290	Power supply subsystem for powering a node over communication cabling A power supply subsystem configured for connection between a LAN switch and at least one node, the power supply subsystem providing electrical power to the at least node over communication cabling, the power supply subsystem comprising: a management and control unit...	09/02/2008
7271597	Electronic device, transmission system, and method for determining connection condition An electronic device has a first signal path, a first power supply path, and a connector that transmits to an external device the input signal on which the voltage has been superposed. The device also has a first power supply switch inserted into the first power sup...	09/18/2007
7233242	Arrangement and method for setting a transmit power A transmit antenna (3) is supplied with energy by a power supply unit (2). An electrical value characteristic for the transmit power is compared to a comparison value and the length of a time interval is measured in which the characteristic value at le...	06/19/2007
7212102	Device integrated battery backup with power source monitoring and manipulation and public safety communications infrastructure incorporating the same A system for, and method of, providing device integrated battery backup with power source monitoring and manipulation and a public safety communications infrastructure incorporating the system or the method. In one embodiment, the system includes: (1) a power supply...	05/01/2007
7079773	Power feeding for an optical transmission system A method and an apparatus for optical transmission line power feed interference compensation for compensating for an electrical interference signal in a power feed conductor (12; 52) and in an associated second conductor (14; 54). The interference sign...	07/18/2006
6704181	Adaptive power circuit protection apparatus and method Disclosed is a "smart" power circuit protection system in which the trip level of a circuit breaker is dynamically set based upon information communicated from the load over the power lines. The system is adaptable to configurations involving multiple loa...	03/09/2004
6687487	Repeater for transmission system for controlling and determining the status of electrical devices from remote locations A repeater for use in a two way communication system for retransmitting information between a first device and a second device to help ensure reliable two way communication between the devices, comprising: a transmitter/receiver, the transmitter/receiver ...	02/03/2004
6496103	Device, system and method for secure A device, system and method for providing power in a secure manner to a network device connected to a network, such as an Ethernet network for example. The device is optionally implemented as an intelligent power supply, which is able to interrogate the n...	12/17/2002
6233689	Communication circuit having network connection detection capability Methods and apparatus for providing network communications capability to a computer system in accordance with standard communication line protocols are described, including interface circuits which sense various characteristics of the communication lines ...	05/15/2001
6000003	Communication circuit having network connection detection capability Methods and apparatus for providing network communications capability to a computer system in accordance with standard communication line protocols are described, including interface circuits which sense various characteristics of the communication lines ...	12/07/1999
5799194	Communication interface circuit having network connection detection capability Methods and apparatus for providing network communications capability to a computer system in accordance with standard communication line protocols are described, including interface circuits which sense various characteristics of the communication lines ...	08/25/1998
5649210	Communication interface circuit having network connection detection capability A method and apparatus for interfacing a computer system with another system is described including an interface circuit. The interface circuit detects if the voltage level on a signal line represents a valid logic level and if so, provides a valid signal...	07/15/1997
4550306	Signal transmission system for fire alarm junction line A novel signal transmission system, having a junction line comprised of a power source line, a grounding line and a signal line is disclosed. Two complementarily operative transistors are connected in series between the power source line and the grounding...	10/29/1985
4475209	Regenerator for an intrabundle power-line communication system A regenerator for providing detection, remodulation, and retransmission of a digital data signal propagated in the differential mode over a pair of bundle conductors of a power line. The electric power signal, propagated in the common mode over the same b...	10/02/1984
4449157	Surge protection for signal transmission systems Secondary surge protection means for equipment connected to transmission lines, for example line-powered amplifiers interconnecting T1 or T1C telephone lines, includes two diode bridges and a pair of surge diverters. One diode bridge has its cathode/anode...	05/15/1984
4309577	Circuit for closing the remote feed loop of a series-supplied repeater A circuit closes a remote feed loop of a series-supplied repeater in a communications channel, in the event of an interruption in the transmission line, by means of a relay which senses an interruption in the feed current to close a shunt circuit. The shu...	01/05/1982
4241243	Power regulator for use with line signal repeaters which are remotely powered Operating power for line signal repeaters is fed over a transmission cable pair (signal line) which is susceptible to lightning strikes and, thus, to longitudinally induced currents in the DC power feed circuit. A symmetrical non-linear power regulator is...	12/23/1980
4202024	Repeater bypass protection apparatus A repeater bypass protection apparatus includes a means of providing a low current path between the input and output transmission lines coupled to a repeater amplifier. Under normal operating conditions the low current path presents a relatively high impe...	05/06/1980
4110570	Surge protection device for repeater A repeater suitable for use in submerged signal transmission systems, the repeater having inherent protection against power surges. The repeater includes a signal path including an amplifier and a separate path for powering the amplifier. The power path i...	08/29/1978
4099036	Remote power supply system for a coaxial line with repeaters subjected to the influence of external electric fields A remote power supply system is disclosed which is particularly for monocial transmission lines equipped with repeaters. It comprises at least one current transformer inserted between two sections of line in a local power supply circuit at each repeater....	07/04/1978
4088850	Remote supply system for a cable transmission line with repeaters subjected to the influence of external electric fields The invention relates in particular to remote supply with AC of repeaters a transmission line with symmetrical pairs. It provides a remote supply system in which the AC remote supply passes through a loop formed by two pairs of the line and in which each...	05/09/1978
4049929	Apparatus for reducing the susceptibility of line signal repeaters to induced currents Apparatus for reducing the susceptibility of line signal repeaters to induced currents includes a zener diode/diode stack which provides the line repeater with a constant voltage drop when the DC line current is above the minimum required bias current. Wh...	09/20/1977

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Class 340/425.2 - Power control