Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7343156 | Method for logging on a portable part at a base station and base station for carrying out the method A method, and base station, are provided for logging on a portable part at a base station having activating capabilities for more than a single associated portable part, wherein the base station, before a log-on mode is actually switched on, performs a check for an ... | 03/11/2008 |
| 7245702 | Method and apparatus for determining and reporting the operational status of an integrated services hub The present invention discloses a method and apparatus for determining and reporting the operational status of an integrated services hub. The AC power supply and wide area network connection of the integrated services hub are monitored, and a signal is sent to a us... | 07/17/2007 |
| 7203851 | Method and apparatus for detecting and supplying power by a first network device to a second network device A first network device supplies power to a second network device in communication therewith. The first network device comprises a physical layer device which includes a pulse generator to generate a test signal comprising n sub-pulses to be transmitted to the second... | 04/10/2007 |
| 7178045 | Optimizing exit latency from an active power management state A transmitting device and a receiving device are coupled together via an interconnect. An electrical idle ordered set is received at the receiving device power management unit after having been transmitted by the transmitting device and received at the input pins of... | 02/13/2007 |
| 7111179 | Method and apparatus for optimizing performance and battery life of electronic devices based on system and application parameters An electronic device (e.g., computer system, etc.) employing dynamic power management of the present invention adjusts power consumption in accordance with an analysis of parameters and events occurring over one or more time-periods. Preferably, the electronic devic... | 09/19/2006 |
| 7099784 | Method and apparatus for preventing overloads of power distribution networks Systems and methods for monitoring power in power distribution systems are provided. In one aspect, a system for monitoring power includes a power monitoring device that measures a value of at least one characteristic of power provided to a branch of a power distrib... | 08/29/2006 |
| 7058174 | System and method for providing lifeline power service to digital subscriber line customers A system and method that provides lifeline service to DSL customers when a loss-of-power message is sent to the central office from an integrated access device on the customer premise. If a predetermined number of loss-of-power messages are received then power is pr... | 06/06/2006 |
| 6922470 | Hybrid DC-feed controller for a subscriber line interface circuit A method and apparatus in a DC-feed controller for controlling a subscriber line interface circuit controlling voltage (alternately, current) on a telephone line comprising a pair of wires. A digital feedback signal is subtracted from a predetermined voltage (altern... | 07/26/2005 |
| 6815844 | Circuit for supplying power to a network termination unit of a message transmission system The invention relates to a circuit for supplying power to a network termination unit (55) of a message transmission system, which is connected to a central station via a subscriber line (30). A local power supply voltage source (41), which is ar... | 11/09/2004 |
| 6804351 | Method and apparatus for detecting a compatible phantom powered device using common mode signaling A method and an apparatus provide for determining whether a data terminal equipment (DTE) device represents a compatible device lacking an independent power supply and adapted to be powered using phantom power over a wired connection from a communications device suc... | 10/12/2004 |
| 6804347 | Replacing telecommunications carrier equipment Telecommunications carrier equipment in a field cabinet can be replaced so as to allow existing carrier multiplexers to be powered by newer, smaller power supply equipment. Each carrier multiplexer has a plurality of power connections for each of a plurality of powe... | 10/12/2004 |
| 6690792 | Active decoupling and power management circuit for line-powered ringing generator A ringing voltage power management circuit is configured to extract an isolated high-value intermediate voltage from a central office powered digital subscriber line through a current limiting circuit, and to charge a storage capacitor that serves as an e... | 02/10/2004 |
| 6647024 | System and method for an all digital communication system with a life line A communication system and method for supporting both POTS and high speed data services between a remote CPE interface, located at a subscriber premises, and a central office. An analog to digital converter transforms an analog POTS signal to a digital PO... | 11/11/2003 |
| 6577882 | Arrangement and a method relating to power supply in a communications network A method and an arrangement supplies power in a communications network (100) comprising subscriber side (110) and a provider side (120), the provider side being connected to nodes of the subscriber side through one or more Line Terminals (LT1, ... | 06/10/2003 |
| 6487175 | Control of power supply to subcribers in digital switch board with respect to data-communication calls A device for controlling power supply to subscribers in a digital subscriber-switch board includes subscriber-line circuits which supply power to the subscribers, and a carrier-detection unit which is connected to a communication path to detect a carrier ... | 11/26/2002 |
| 6434220 | Long-distance transmission system and device A long-distance transmission system includes a network terminal that accommodates terminal equipment, and a line terminal connected to the network terminal via a two-wire metallic subscriber line. The network terminal includes an amplifier, which amplifie... | 08/13/2002 |
| 6144737 | Trunk interface circuit having function of battery feed to central office A telephone-system interface circuit connected to a central office via a tip line and a ring line includes a battery having a first terminal and a second terminal. A first current control circuit is connected between the tip line and the first terminal of... | 11/07/2000 |
| 6047063 | Methods and apparatus for providing an auxiliary communication line Methods and apparatus for using and/or switching to an auxiliary communication pathway to increase system reliability and/or reduce maintenance costs is disclosed. One feature is directed to a smart network interface device (SNID) implemented using latchi... | 04/04/2000 |
| 6005933 | Method for communication with no power feed and exchange for realizing the method Disclosed is a method for communication with no power feed in an exchange. (1) A calling subscriber unit transmits a special service code designating the disuse of a direct current loop together with the numeric information on the called subscriber unit t... | 12/21/1999 |
| 5734711 | Telecommunication system with energy-saving mode In a program-controlled telecommunication system (KS), at least sub-areas (SLM1..n) are controlled into an energy-saving mode with reduced energy consumption using a central controller (ZS) and additional controllers (SM) given the presence of energy-savi... | 03/31/1998 |
| 5617414 | Power reduction in time-space switches In a telecommunication system, especially a telephone system having at least one electronic computer controlled telephone exchange, in its turn having time-space type switches, including a number of memory devices in the form of matrices, a method and an ... | 04/01/1997 |
| 5457741 | Subscriber transmission system The arrangement is such that to a transmission apparatus of the subscriber side in a subscriber transmission system wherein the transmission apparatus of the subscriber side which serves a plurality of subscribers and a transmission apparatus connected to... | 10/10/1995 |
| 5416832 | Call detection control apparatus A call detection control apparatus includes individual call detecting circuits, a common call detecting circuit, switching circuits, and a power supply circuit. The individual call detecting circuits individually detect call signals, which originate from ... | 05/16/1995 |
| 4700381 | Circuit arrangement for centrally-controlled telecommunications exchange systems, comprising central control units and an alternate circuit arrangement Two parallel-operated control units each communicate via a respective discrete bus with a respective assigned group of switch devices, and given an alternate circuit based on one control unit simultaneously accepting the tasks for both groups, an alternat... | 10/13/1987 |
| 4082923 | Semiconductor speech path switch A plurality of sets of thyristors, each set consisting of two thyristors connected in inverse parallel configuration, are arranged in the form of a matrix to provide a switch of balanced or unbalanced type. A control circuit is provided which feeds succes... | 04/04/1978 |
