| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Information transmission system and information transmission method | EP09006940.2 | 2003-11-19 | EP2088685B1 | 2011-01-12 | Sato, Yutaka; Nagasu, Masahiro; Yanai, Shigenobu; Ishida, Keiji; Murakami, Toshiyuki |
| 242 | OPTIMIZATION OF ULTRA-WIDEBAND COMMUNICATION THROUGH A WIRE MEDIUM | EP04811782 | 2004-11-18 | EP1712008A4 | 2008-10-15 | SANTHOFF JOHN; MOORE STEVEN A |
| Apparatus and methods to optimize ultra-wideband communication through wire and cable media are provided. One apparatus comprises an ultra- wideband transmitter structured to transmit a training set of ultra- wideband pulses through the wire medium (10). An ultra-wideband receiver is structured to receive the training set of ultra-wideband pulses from the wire medium (20). A determination of which of the pulses within the training set is best suited for communication through the media is then performed (30). This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims. | ||||||
| 243 | Information transmission system and information transmission method | EP03257299.2 | 2003-11-19 | EP1422833A3 | 2007-01-17 | Sato, Yutaka, c/o Hitachi, Ltd., IP Group; Nagasu, Masahiro, c/o Hitachi, Ltd., IP Group; Yanai, Shigenobu, c/o Hitachi, Ltd., IP Group; Ishida, Keiji, c/o Hitachi, Ltd., IP Group; Murakami, T., Hitachi Inf. & Control Sys., Inc. |
The present invention provides a high reliability information transmission system which can continue transmission at the occurrence of multiple failures. Providing two key transmission lines, connecting transmission terminals to both of the key transmission lines, transmitting data to both key transmission lines, causing respective transmission terminals to always check reception status, and causing the relaying function to relay data from one transmission line to the other transmission line when the data does not come from one of the transmission lines.
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| 244 | ULTRA-WIDEBAND COMMUNICATION THROUGH TWISTED-PAIR WIRE MEDIA | EP04816972.6 | 2004-11-18 | EP1706972A1 | 2006-10-04 | SANTHOFF, John; MOORE, Steven, A. |
| Methods and apparatus that transmit ultra-wideband pulses through twisted-pair wire media are provided. One method includes transmitting an ultra-wideband pulse through the twisted-pair wire media at dissimilar time periods. Another method includes transmitting an ultra-wideband pulse through the twisted-pair wire media at dissimilar radio frequencies. Yet another method includes transmitting an ultra-wideband pulse through the twisted-pair wire media at dissimilar time periods and at dissimilar radio frequencies. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims. | ||||||
| 245 | RF COMMUNICATION SIGNAL DISTRIBUTION SYSTEM AND METHOD | EP96942038 | 1996-11-20 | EP0954910A4 | 2004-12-08 | VAN DER KAAY ERIK; DUBOVSKY GEORGE S |
| A system and method for distribution of RF communication signals. First RF communication signals are downconverted in a first signal processing subsystem (107) via twisted-pair cable. The downconverted first RF communication signals are upconverted at the second signal processing subsystem (108) to provide recovered first RF communications signals, and the recovered first RF communication signals are transmitted via an antenna (110). Operating power for the second signal processing subsystem is provided from the signal processing subsystem, and the second signal processing subsystem determines the occurrence of an event and transmits autonomous information signals to the first signal processing subsystem. | ||||||
| 246 | Signal transmission circuit | EP96410117.4 | 1996-11-22 | EP0777339B1 | 2004-07-14 | Moreau, Jean-Michel |
| 247 | DISTRIBUTION OF RADIO-FREQUENCY SIGNALS THROUGH LOW BANDWIDTH INFRASTRUCTURES | EP97922450.8 | 1997-04-18 | EP0894369B1 | 2004-02-18 | GEORGES, John, B.; CUTRER, David, M.; LAU, Kam, Y. |
| A system and method for transmitting a radio frequency (RF) signal in a RF bandwidth over a low bandwidth medium (60), e.g., in-building cabling, which has a transmission bandwidth below the RF bandwidth. The system (50) has a unit (52) for receiving the RF signal and global reference oscillator (66) for distributing a global reference tone of high stability to the entire system (50). Local oscillators (58 and 86) are controlled by adjustement signals derived from this global reference tone to deliver RF reference tones of high stability required for mixing the RF signal to obtain an intermediate frequency (IF) signal which is fed through the low bandwidth medium (60). The global reference tone is preferably delivered through the same low bandwidth medium (60) to desired locations, such as remote coverage sites in a network for cellular communications, cordless telephony, local RF communications, interactive multi-media video, and high bit-rate communications. | ||||||
| 248 | REMOTE CONTROL APPARATUS FOR POWER LINE COMMUNICATIONS SYSTEM | EP96923522.0 | 1996-06-27 | EP0965180A1 | 1999-12-22 | PATEL, Chandrakant, Bhailalbhai; ADER, Joseph, Robert; KLEIN, Henry, Charles; ARTMAN, John |
| Remote control apparatus for a power line communications system in which control signals are transmitted, via the power line to, from the location of utilization equipment to a control unit located at a remote point and by which the utilization equipment is controlled. | ||||||
| 249 | DISTRIBUTION OF RADIO-FREQUENCY SIGNALS THROUGH LOW BANDWIDTH INFRASTRUCTURES | EP97922450 | 1997-04-18 | EP0894369A4 | 1999-08-04 | GEORGES JOHN B; CUTRER DAVID M; LAU KAM Y |
| A system and method for transmitting a radio frequency (RF) signal in a RF bandwidth over a low bandwidth medium (60), e.g., in-building cabling, which has a transmission bandwidth below the RF bandwidth. The system (50) has a unit (52) for receiving the RF signal and global reference oscillator (66) for distributing a global reference tone of high stability to the entire system (50). Local oscillators (58 and 86) are controlled by adjustement signals derived from this global reference tone to deliver RF reference tones of high stability required for mixing the RF signal to obtain an intermediate frequency (IF) signal which is fed through the low bandwidth medium (60). The global reference tone is preferably delivered through the same low bandwidth medium (60) to desired locations, such as remote coverage sites in a network for cellular communications, cordless telephony, local RF communications, interactive multi-media video, and high bit-rate communications. | ||||||
| 250 | VERFAHREN UND SCHALTUNGSANORDNUNG ZUM ENERGIEARMEN ABFRAGEN VON BINÄREN ZUSTÄNDEN ÜBER LANGE LEITUNGEN | EP95915135.8 | 1995-04-07 | EP0756773B1 | 1998-08-12 | ZIRKL, Siegmar |
| A process for the low-energy interrogation of binary states over long lines (5) by means of a monitoring circuit (4). The latter is connected via a bus coupling circuit (2) to bus lines (1) of a bus system for energy and information transmission in a building system. A long line (5) is charged with low-energy pulses of one polarity with respect to reference potential as long as a connected actor or sensor (component (6)) has a high voltage or is open. The potential of the long line (5) is discharged via the actor or sensor (component (6)) when the latter is at a low voltage or is closed. | ||||||
| 251 | VERFAHREN ZUM ENERGIEARMEN ABFRAGEN VON BINÄREN ZUSTÄNDEN ÜBER LANGE LEITUNGEN | EP95915135.0 | 1995-04-07 | EP0756773A1 | 1997-02-05 | ZIRKL, Siegmar |
| A process for the low-energy interrogation of binary states over long lines (5) by means of a monitoring circuit (4). The latter is connected via a bus coupling circuit (2) to bus lines (1) of a bus system for energy and information transmission in a building system. A long line (5) is charged with low-energy pulses of one polarity with respect to reference potential as long as a connected actor or sensor (component (6)) has a high voltage or is open. The potential of the long line (5) is discharged via the actor or sensor (component (6)) when the latter is at a low voltage or is closed. | ||||||
| 252 | Procédé et dispositif pour augmenter les débits de transmission de signaux sur des câbles de puits multi-fonctions | EP92401211.5 | 1992-04-28 | EP0511915A1 | 1992-11-04 | Beauducel, Claude; Cretin, Jacques; Saussier, Daniel |
Le procédé s'applique pour optimiser les débits de transmission des signaux numérisés sur des lignes de transmission dans des câbles multi-fonctions tels que des câbles de logging reliant des outils de puits à des installations de surface. Il comporte la numérisation des données à transmettre et leur codage par des tensions électriques choisies parmi un ensemble de tensions de codage multi-niveaux (de 2 à 32 par exemple), l'élargissement vers les hautes fréquences de la bande passante de chaque ligne de transmission utilisée par combinaison avec des circuits de correction choisis pour que la fonction de transfert de la ligne corrigée soit sensiblement celle d'un filtre du type Bessel, au moins dans un certain intervalle de fréquence de part et d'autre d'une fréquence de coupure fc à 3 dB qui dépend du nombre de tensions de codage et des paramètres d'amplification. Par l'emploi du procédé, on peut dépasser très facilement un débit total de plus de 1 Mbits/s sans augmenter le taux d'erreur de transmission. Application à la transmission de données captées par des outils de puits par exemple. |
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| 253 | Dispositif pour la transmission à distance de signaux notamment de signaux vidéo | EP88400243.7 | 1988-02-02 | EP0281440B1 | 1992-09-30 | Grandmougin, Gérard |
| 254 | BOARD FOR SURGE ABSORBING DEVICE OF COMMUNICATION LINE | EP91900344.2 | 1990-11-27 | EP0460223A1 | 1991-12-11 | ITO, Takaaki Mitsubishi Materials Corporation; KURASAWA, Koichi Mitsubishi Materials Corporation; SARUWATARI, Nobuya Mitsubishi Materials; TANAKA, Yoshiyuki Mitsubishi Materials |
A board for surge absorbing devices of a communication line in which the mouting area of a group of surge absorbing elements is made less and an improvement of the dielectric strength of the holding board is intended too, by providing a predetermined holding board apart from boards for devices in apparatus connected to the communication line. According to this invention, the mounting area of the group of the surge absorbing elements can be decreased to about one half or less of conventional ones. Since the distances between wiring patterns on the holding board can be shortened if the dielectric strength of the holding board is fixed, the area of the holding board can be further decreased. |
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| 255 | DISPOSITIF POUR LA TRANSMISSION A DISTANCE DE SIGNAUX, NOTAMMENT DE SIGNAUX VIDEO | EP88901421.0 | 1988-01-27 | EP0300016A1 | 1989-01-25 | GRANDMOUGIN, Gérard |
| Dispositif de transmission de signaux, notamment vidéo, entre au moins un ensemble émetteur et au moins un ensemble récepteur au moyen d'une ligne de liaison à deux fils, équipée à chaque extrémité d'un transformateur symétrique et alimentée par au moins un générateur de courant, dans lequel le générateur (10) débite symétriquement sur les fils (6-7) et est commandé en tension par les signaux à transmettre, dont la fréquence est comprise entre 50 Hz et 30 MHz, la ligne étant adaptée à chaque extrémité par une impédance égale à son impédance caractéristique. | ||||||
| 256 | Dispositif pour la transmission à distance de signaux notamment de signaux vidéo | EP88400243.7 | 1988-02-02 | EP0281440A1 | 1988-09-07 | Grandmougin, Gérard |
Dispositif de transmission entre au moins un ensemble émetteur et au moins un ensemble récepteur au moyen d'une ligne de liaison à deux fils, équipée à chaque extrémité d'un transformateur symétrique et alimentée par au moins un générateur de courant, dans lequel le générateur (10) débite symétriquement sur les fils (6-7) et est commandé en tension par les signaux à transmettre, dont la fréquence est comprise entre 50 Hz et 30 MHz, la ligne étant adaptée à chaque extrémité par une impédance égale à son impédance caractéristique. |
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| 257 | Data transmission system | EP86401677 | 1986-07-28 | EP0211750A3 | 1988-08-17 | Beggs, Richard Douglas; Friesen, Harold Wayne; Nutt, Wendell Glenn |
A parallel data transmission system (20) comprises a cable (40) which is capable of balanced mode transmission but which is driven in an unbalanced mode. The cable includes a plurality of twisted pairs of individually insulated conductors (42-42) enclosed by a metallic shield (54). The twist lengths are relatively short to cause the pairs to be decoupled sufficiently from one another to allow substantially error-free, parallel transmission over relatively long distances. Interposed between the core and the shield is a spacing member (52) which has a relatively low dielectric constant. Receiving facilities are provided for detecting whether the level of transmitted signals is above or below predetermined threshold values and for converting the received signals into one of two or more logic levels. Advantageously, this system increases substantially the distances over which substantially error-free transmission in an unbalanced mode can be accomplished. |
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| 258 | Schaltungsanordnung und Busschaltung mit hoher Bandbreite sowie Breitbandkoppelfeldbaustein | EP87113757.6 | 1987-09-21 | EP0261620A2 | 1988-03-30 | Banniza, Thomas; Klein, Michael, Dr.; Preisach, Helmut; Wölk, Joachim |
Die Erfindung gibt einen Weg an, um bei technologiebedingter Bandbreitenbegrenzung (Innenwiderstand Ri, parasitäre Kapazität C) die effektive Bandbreite zu erhöhen. Hierzu wird ein zusätzlicher Widerstand (Ra) zwischen die Signalleitung (L) und einen Punkt mit festem Potential (UH) eingefügt. Ausführungsbeispiele, insbesondere für integrierte Bauweise, werden angegeben. Anwendungsbeispiele sind Busschaltungen und Breitbandkoppelfeldbausteine, wobei durch die erfindungsgemäße Maßnahme die Zahl der Koppelpunkte (Kapazität C) bei gleicher Bandbreite erhöht werden kann. |
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| 259 | Duplex microphone communication system | EP86309545.1 | 1986-12-08 | EP0236627A2 | 1987-09-16 | Reichel, Kenneth R.; Hebrock, Steve |
System permitting simultaneous bi-directional communications for a two conductor shielded microphone cable (22). A talkback signal is injected by an encoder (30) at one end using a balanced input to transmit a common-mode signal on the two conductors of the microphone cable using the shield as a ground reference. This signal is then decoded at the other end of the cable by decoding circuitry (20) which recovers the common-mode talkback signal. |
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| 260 | Data transmission system | EP86401677.9 | 1986-07-28 | EP0211750A2 | 1987-02-25 | Beggs, Richard Douglas; Friesen, Harold Wayne; Nutt, Wendell Glenn |
A parallel data transmission system (20) comprises a cable (40) which is capable of balanced mode transmission but which is driven in an unbalanced mode. The cable includes a plurality of twisted pairs of individually insulated conductors (42-42) enclosed by a metallic shield (54). The twist lengths are relatively short to cause the pairs to be decoupled sufficiently from one another to allow substantially error-free, parallel transmission over relatively long distances. Interposed between the core and the shield is a spacing member (52) which has a relatively low dielectric constant. Receiving facilities are provided for detecting whether the level of transmitted signals is above or below predetermined threshold values and for converting the received signals into one of two or more logic levels. Advantageously, this system increases substantially the distances over which substantially error-free transmission in an unbalanced mode can be accomplished. |
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