Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7408438 | Communication apparatus having wired communication function and wireless communication function, and control method therefor A communication apparatus automatically sets the most appropriate communication mode in accordance with the location at which the communication apparatus is used. For example, the communication mode is switched between operating as a master station and operating as ... | 08/05/2008 |
| 7286049 | Method and system of re-directing and backing up security system data at a receiver A monitoring system having a plurality of receivers connected to at least one other receiver such that data can be transmitted from a primary receiver to a backup receiver if a data path to an automation computer or to its printer is down. The system programs a prim... | 10/23/2007 |
| 7256684 | Method and apparatus for remote powering of device connected to network A network node determines the suitability of coupled devices for being remotely line powered before actually powering them. The node scan its ports to determine which ports are coupled to devices. The node then interrogates the coupled devices. A unique discovery to... | 08/14/2007 |
| 7167512 | Communication method, communication apparatus, software program and computer-readable recording medium for avoiding delay in authentication due to interruption of communication A communication method for enjoying service from a service providing system that provides predetermined service to a user after user authentication via a communication line and disconnects the communication line when the user authentication is not completed within a... | 01/23/2007 |
| 6998958 | Remote control system for a vehicle A remote control system for precisely identifying a distance from the vehicle to an entry key and favorably controlling a vehicle-mounted device such as a door corresponding to the distance. The system comprises a transmitter transmitting different types of response... | 02/14/2006 |
| 6993784 | Information signal transmission device An information signal transmission device including objects, an event manager, a broadcast manager, and a network messenger. By simply exchanging a message with the event manager, the object can perform message exchange without any discrimination between communicati... | 01/31/2006 |
| 6985978 | Method of optimizing topology of IEEE 1394 serial bus A method of optimizing the topology of the IEEE 1394 serial bus having a plurality of nodes each with communication ports, comprises the steps of prioritizing the nodes according to the number of the ports and the transmission speed, connecting a non-used port of th... | 01/10/2006 |
| 6778065 | Remote control system for a vehicle A remote control system for precisely identifying a distance from the vehicle to an entry key and favorably controlling a vehicle-mounted device such as a door corresponding to the distance. The system comprises a transmitter transmitting different types of response... | 08/17/2004 |
| 6603388 | Security system and method A security system for actuating a security mechanism of a vehicle includes a transceiver coupled to the security mechanism and having one transmission channel for transmitting a first signal and a number of reception channels. A remote radio-frequency tra... | 08/05/2003 |
| 6577728 | Method of providing continual network access for subscriber communication lines A method for providing automatic restoration of network access for user lines within a communication system. The user lines interface with groups of transmission lines that include dedicated transmission lines which are connected to the user lines, idle t... | 06/10/2003 |
| 6529969 | Reception method and apparatus for searching various first and second source devices apapted to send data signals to analog and optical input terminals A reception apparatus or transmission and reception apparatus has a plurality of input terminals, and a plurality of apparatus are connected by a chain connection to a predetermined one of the input terminals. The input terminal at which the apparatus is ... | 03/04/2003 |
| 6198926 | Method for establishing standby periods in a base station and a handset An invention is disclosed having a base station and a plurality of handsets connected to this base station by various radio channels. For saving on accumulators which supply power to these handsets, these handsets are put in a standby mode for as long per... | 03/06/2001 |
| 6198406 | Method and apparatus for providing a predictable upper bound for a channel search time of a portable subscriber unit A portable subscriber unit (PSU) (222) operating in a plurality of messaging systems selects (605) a first messaging system to monitor for messages. The PSU then initiates (610) background scanning according to a scan list (326), including a plurality of ... | 03/06/2001 |
| 6169724 | Egress network service monitor A method of recognizing a call failure related problem occurring at an egress network of a telephone system wherein information relating to call failures occurring at the egress network is provided by an out-of-band signaling system. The method includes d... | 01/02/2001 |
| 6140926 | Redundant status indicators for fault tolerance A system includes multiple modules, each powered by a different power source, and a status indicator for a first of the modules. Any of the multiple modules can drive the status indicator. Each of the modules monitors the operation of the first module, dr... | 10/31/2000 |
| 6111663 | Apparatus and method for selective modem communications on shared, closed-loop communication systems A closed-loop communication system includes a closed-loop communication link with a shared communication channel. A set of communication devices are connected to the closed-loop communication link. Each communication device has un-arbitrated access to the... | 08/29/2000 |
| 6108301 | Circuit, architecture and method for redundant data communications links A communication unit, coupled to a communication link, may be enabled if a signal is present on the communication link and the unit is active. However, if no signal is present on the communication link, the communication unit generates a token used to act... | 08/22/2000 |
| 6067572 | Extrinsically influenced near-optimal path apparatus and method A method and apparatus for dynamically providing a path through a network of nodes or granules may use a limited, advanced look at potential steps along a plurality of available paths. Given an initial position, at an initial node or granule within a netw... | 05/23/2000 |
| 6038210 | Device for switching over double module A switchover device switches over a double module between first and second modules manually or automatically, in which the control signals and switchover signals are generated with of the logic combination circuits and relays, to simplify signal processin... | 03/14/2000 |
| 6031906 | Digital loop carrier system with automatic reprovisioning of dedicated lines A digital loop carrier system in a communications network that provides automatic restoration of network access for user lines in the event of a failure. The system includes a plurality of user lines and groups of transmission lines interfaced with the us... | 02/29/2000 |
| 6028837 | Ether ring architecture for local area networks A ring topology based architecture for a local area network. The transmission medium is unshielded twisted-pair wire. A set of two such twisted-pairs are used to connect the nodes of the network together, with the transmit twisted-pair wires from one node... | 02/22/2000 |
| 6021111 | Unit switching apparatus with failure detection A unit switching apparatus includes first and second current units, a spare unit, and a switching unit. Each of the current units includes a communication circuit for performing communication in accordance with set operation mode data and a failure detect... | 02/01/2000 |
| 5969629 | Wireless communication apparatus A wireless communication apparatus automatically disconnects a communication channel between a master device and a slave device when a received electric field intensity becomes lower than a predetermined level, thereby preventing unnecessarily prolonged c... | 10/19/1999 |
| 5889477 | Process and system for ascertaining traffic conditions using stationary data collection devices A process and apparatus for determining traffic conditions using stationary data collection devices that are installed in a road network. The data collection devices collect data about traffic conditions at the respective installation sites in keeping wit... | 03/30/1999 |
| 5877701 | Radio pager reporting frequency band information A radio pager of the present invention includes a non-volatile memory storing frequency information for each of a plurality of frequency bands for the confirmation of a frequency band. The frequency information are sequentially read out of the memory whil... | 03/02/1999 |
| 5870556 | Monitoring a messaging link A deficiency in a link in a messaging system is detected by sending across the link a request message that includes a coded data string, receiving across the link a reply message that includes the coded data string, and determining whether the travel time... | 02/09/1999 |
| 5866956 | Apparatus for and method of monitoring and controlling a power system A apparatus for monitoring and controlling a power system having an alternating current bus. The apparatus includes a module which is coupled to the bus and which digitizes and modulates at least one of a voltage waveform and a current waveform present on... | 02/02/1999 |
| 5867481 | Node device and alarm notification control method for ATM network In an asynchronous transfer mode (ATM) network, if an originating terminal notifies necessity or unnecessity of transmitting a fault notification signal through a call set-up message, the content of the notification is notified to respective node devices ... | 02/02/1999 |
| 5838248 | Electronic arrangement and communication control method therefor An electronic arrangement in a communication system for performing data communications among a plurality of electronic devices connected together through a bus and a method for controlling the communication system. The electronic arrangement includes a mo... | 11/17/1998 |
| 5790797 | Load distribution system for monitoring device In order to lighten the processing load on each monitoring device and enable each monitoring device to recognize the operating condition of a network as a whole, each monitoring device monitors operating conditions of transmission devices in a subnetwork ... | 08/04/1998 |
| 5761245 | Method and a system for redundancy control of baseband channels in a telecommunications system A method and a system for performing redundancy control of the baseband primary channel interfaces of a plurality of mutually substantially identical receivers in a digital transmission device, such as a radio link, including: monitoring the quality of a ... | 06/02/1998 |
| 5757265 | Multiple-cable field bus system A field bus system may be used in which transmission ability of the system can be maintained even if communication error occurs due to noises or failure of a transmission line. The system can be easily shifted at a lower cost from a conventional system to... | 05/26/1998 |
| 5734328 | Apparatus for switching communication method based on detected communication distance A communication apparatus comprising: a spatial communication circuit having a transmission part and a reception part; and a detection part for detecting the separate positional state from a communication partner apparatus. The communication method by the... | 03/31/1998 |
| 5701410 | Method and system for detecting fault conditions on multiplexed networks A method for detecting fault conditions on a multiplexed network having first and second busses. The method includes sensing a start of frame delimiter (SOF) for the first bus, and determining the state of the second bus when the SOF is sensed. If the sta... | 12/23/1997 |
| 5663950 | Methods and systems for fault isolation and bypass in a dual ring communication system An apparatus and method for fault isolation and bypass in a dual ring communication system provides a reconfiguration unit capable of attachment to a dual ring communication system having a plurality of reconfiguration units. The disclosed reconfiguration... | 09/02/1997 |
| 5663949 | Line protection switching system in duplexed fiber interface shelf A line protection switching system of a duplexed fiber interface shelf makes easily to reconcile conditions of duplexed fiber interface shelves, which perform line switching by employing APS bytes on an ISDN network. The line protection switching system h... | 09/02/1997 |
| 5646936 | Knowledge based path set up and spare capacity assignment for distributed network restoration In a telecommunications network having a plurality of intelligent nodes interconnected by multiple communication channels, alternate paths and spare channels are set up for restoring traffic disrupted by failure to one or more of the communications channe... | 07/08/1997 |
| 5636341 | Fault processing method and information processing system When a fault occurs on a data communication processor that controls data communication between information processors, all information processors connected to the data communication processor are notified of the occurrence of the fault, upon which the inf... | 06/03/1997 |
| 5636206 | System for achieving alarm masking processing An alarm masking system is provided which is capable of implementing alarm priority processing or alarm inhibit processing in ATM transmission equipment. In ATM transmission equipment, a received virtual path or virtual channel is switched by means of a s... | 06/03/1997 |
| 5606664 | Apparatus and method for automatically determining the topology of a local area network Apparatus for monitoring and displaying the status of a local area network. The network includes a hub with ports for connection to various data terminal equipment in a star configuration and for connection to other hubs of the network. The hubs each have... | 02/25/1997 |
