Quotables
"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
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| Number | Title | Issue Date |
| 7424291 | Method and system for enabling timed events of a portable computing device to trigger remote control of external devices One embodiment in accordance with the present invention includes using a portable computing device to remotely control devices and/or systems wirelessly. Specifically, a software timer application operating on the portable computing device enables its user to predef... | 09/09/2008 |
| 7369060 | Distributed intelligence ballast system and extended lighting control protocol A ballast for use in a multi-ballast lighting system wherein the ballasts are coupled together by a digital communication network. The ballast comprises a power circuit portion for providing an electrical current to power a lamp. The ballast further includes a senso... | 05/06/2008 |
| 7346331 | Power management for locking system In an access control system, a method and system for power management. A method of power management in a wireless access control system includes monitoring usage of a transceiver in a remote access point in a wireless access control system, de-activating the transce... | 03/18/2008 |
| 7079857 | Method and apparatus for providing arbitration in a group communication network A method and apparatus for arbitrating between a first communication device having floor control in a group communication network and a second communication device competing for floor control provides receiving a floor-control request from the second communication d... | 07/18/2006 |
| 5581246 | Multiple device control system A train communication and control system is described having the cars of the train connected by a two-wire train line running continuously from car to car. Each car has a transmitting circuit and a receiving circuit connected across the line. Any car may ... | 12/03/1996 |
| 4584576 | Ringing signal generator D.C.-fed ringing signal generator for a group of subscriber lines comprises a cascade arrangement of a digital signal generator controllable by a control signal to produce a signal corresponding either to the ringing signal or to a signal having zero valu... | 04/22/1986 |
| 4191941 | Switch matrix for data transfers A switch matrix for connecting any one of a large number of communications lines, transmitting a message header, with any other non-busy one of the lines. A plurality of connection links are provided. A message header identifies a transmitting line carryi... | 03/04/1980 |
| 4104486 | System for accumulating data over nondedicated telephone lines A telephone data accumulator system for accumulating data at a central station through connection of the central station to a remote subscriber's station, including a data accumulator, by way of nondedicated telephone lines. The remote terminal is selecti... | 08/01/1978 |
| 4006461 | System for transmitting operating condition data from a passive station to a central station The system includes a passive station dedicated to the control and acquisition of data of an electronic apparatus and arranged for communication with a central station over a non-dedicated voice band-width communication link with connections being establi... | 02/01/1977 |
| 4002837 | Transceiver A data receiver for transmitting interrogating signals to activate in sequence a plurality of data transponders, receiving data from the transponders, processing the data, correcting the data, storing the data in a temporary memory, and delivering the dat... | 01/11/1977 |
